add ymake export to ydb

138 files changed, 10957 insertions, 0 deletions

diff --git a/build/scripts/__pycache__/process_command_files.cpython-310.pyc b/build/scripts/__pycache__/process_command_files.cpython-310.pyc
new file mode 100644
index 0000000000..bc379d64a6
--- /dev/null
+++ b/build/scripts/__pycache__/process_command_files.cpython-310.pyc
diff --git a/build/scripts/__pycache__/process_whole_archive_option.cpython-310.pyc b/build/scripts/__pycache__/process_whole_archive_option.cpython-310.pyc
new file mode 100644
index 0000000000..fd67bee5b9
--- /dev/null
+++ b/build/scripts/__pycache__/process_whole_archive_option.cpython-310.pyc
diff --git a/build/scripts/_check_compiler.cpp b/build/scripts/_check_compiler.cpp
new file mode 100644
index 0000000000..53c5fdf179
--- /dev/null
+++ b/build/scripts/_check_compiler.cpp
@@ -0,0 +1 @@
+#include <stdio.h>
diff --git a/build/scripts/_fake_src.cpp b/build/scripts/_fake_src.cpp
new file mode 100644
index 0000000000..139597f9cb
--- /dev/null
+++ b/build/scripts/_fake_src.cpp
@@ -0,0 +1,2 @@
+
+
diff --git a/build/scripts/append_file.py b/build/scripts/append_file.py
new file mode 100644
index 0000000000..1413cec352
--- /dev/null
+++ b/build/scripts/append_file.py
@@ -0,0 +1,9 @@
+import sys
+
+
+if __name__ == "__main__":
+
+    file_path = sys.argv[1]
+    with open(file_path, "a") as f:
+        for text in sys.argv[2:]:
+            f.write('{}\n'.format(text))
diff --git a/build/scripts/autotar_gendirs.py b/build/scripts/autotar_gendirs.py
new file mode 100644
index 0000000000..a1228108aa
--- /dev/null
+++ b/build/scripts/autotar_gendirs.py
@@ -0,0 +1,70 @@
+from __future__ import print_function
+
+import os
+import sys
+import argparse
+import tarfile
+import subprocess
+
+
+def is_exe(fpath):
+    return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+
+def pack_dir(dir_path, dest_path):
+    dir_path = os.path.abspath(dir_path)
+    for tar_exe in ('/usr/bin/tar', '/bin/tar'):
+        if is_exe(tar_exe):
+            subprocess.check_call([tar_exe, '-cf', dest_path, '-C', os.path.dirname(dir_path), os.path.basename(dir_path)])
+            break
+    else:
+        with tarfile.open(dest_path, 'w') as out:
+            out.add(dir_path, arcname=os.path.basename(dir_path))
+
+
+def unpack_dir(tared_dir, dest_path):
+    tared_dir = os.path.abspath(tared_dir)
+    if not os.path.exists(dest_path):
+        os.makedirs(dest_path)
+    for tar_exe in ('/usr/bin/tar', '/bin/tar'):
+        if is_exe(tar_exe):
+            subprocess.check_call([tar_exe, '-xf', tared_dir, '-C', dest_path])
+            break
+    else:
+        with tarfile.open(tared_dir, 'r') as tar_file:
+            tar_file.extractall(dest_path)
+
+
+# Must only be used to pack directories in build root
+# Must silently accept empty list of dirs and do nothing in such case (workaround for ymake.core.conf limitations)
+def main(args):
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--pack', action='store_true', default=False)
+    parser.add_argument('--unpack', action='store_true', default=False)
+    parser.add_argument('--ext')
+    parser.add_argument('--outs', nargs='*', default=[])
+    parser.add_argument('dirs', nargs='*')
+    args = parser.parse_args(args)
+
+    if args.pack:
+        if len(args.dirs) != len(args.outs):
+            print("Number and oder of dirs to pack must match to the number and order of outs", file=sys.stderr)
+            return 1
+        for dir, dest in zip(args.dirs, args.outs):
+            pack_dir(dir, dest)
+    elif args.unpack:
+        for tared_dir in args.dirs:
+            if not tared_dir.endswith(args.ext):
+                print("Requested to unpack '{}' which do not have required extension '{}'".format(tared_dir, args.ext), file=sys.stderr)
+                return 1
+            dest = os.path.dirname(tared_dir)
+            unpack_dir(tared_dir, dest)
+    else:
+        print("Neither --pack nor --unpack specified. Don't know what to do.", file=sys.stderr)
+        return 1
+
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv[1:]))
diff --git a/build/scripts/build_catboost.py b/build/scripts/build_catboost.py
new file mode 100755
index 0000000000..78334fc5f7
--- /dev/null
+++ b/build/scripts/build_catboost.py
@@ -0,0 +1,71 @@
+import sys
+import os
+import shutil
+import re
+import subprocess
+
+def get_value(val):
+    dct = val.split('=', 1)
+    if len(dct) > 1:
+        return dct[1]
+    return ''
+
+
+class BuildCbBase(object):
+    def run(self, cbmodel, cbname, cb_cpp_path):
+
+        data_prefix = "CB_External_"
+        data = data_prefix + cbname
+        datasize = data + "Size"
+
+        cbtype = "const NCatboostCalcer::TCatboostCalcer"
+        cbload = "(ReadModel({0}, {1}, EModelType::CatboostBinary))".format(data, datasize)
+
+        cb_cpp_tmp_path = cb_cpp_path + ".tmp"
+        cb_cpp_tmp = open(cb_cpp_tmp_path, 'w')
+
+        cb_cpp_tmp.write("#include <kernel/catboost/catboost_calcer.h>\n")
+
+        ro_data_path = os.path.dirname(cb_cpp_path) + "/" + data_prefix + cbname + ".rodata"
+        cb_cpp_tmp.write("namespace{\n")
+        cb_cpp_tmp.write("    extern \"C\" {\n")
+        cb_cpp_tmp.write("        extern const unsigned char {1}{0}[];\n".format(cbname, data_prefix))
+        cb_cpp_tmp.write("        extern const ui32 {1}{0}Size;\n".format(cbname, data_prefix))
+        cb_cpp_tmp.write("    }\n")
+        cb_cpp_tmp.write("}\n")
+        archiverCall = subprocess.Popen([self.archiver, "-q", "-p", "-o", ro_data_path, cbmodel], stdout=None, stderr=subprocess.PIPE)
+        archiverCall.wait()
+        cb_cpp_tmp.write("extern {0} {1};\n".format(cbtype, cbname))
+        cb_cpp_tmp.write("{0} {1}{2};".format(cbtype, cbname, cbload))
+        cb_cpp_tmp.close()
+        shutil.move(cb_cpp_tmp_path, cb_cpp_path)
+
+class BuildCb(BuildCbBase):
+    def run(self, argv):
+        if len(argv) < 5:
+            print >>sys.stderr, "BuildCb.Run(<ARCADIA_ROOT> <archiver> <mninfo> <mnname> <cppOutput> [params...])"
+            sys.exit(1)
+
+        self.SrcRoot = argv[0]
+        self.archiver = argv[1]
+        cbmodel = argv[2]
+        cbname = argv[3]
+        cb_cpp_path = argv[4]
+
+        super(BuildCb, self).run(cbmodel, cbname, cb_cpp_path)
+
+
+def build_cb_f(argv):
+    build_cb = BuildCb()
+    build_cb.run(argv)
+
+
+if __name__ == '__main__':
+    if len(sys.argv) < 2:
+        print >>sys.stderr, "Usage: build_cb.py <funcName> <args...>"
+        sys.exit(1)
+
+    if (sys.argv[2:]):
+        globals()[sys.argv[1]](sys.argv[2:])
+    else:
+        globals()[sys.argv[1]]()
diff --git a/build/scripts/build_dll_and_java.py b/build/scripts/build_dll_and_java.py
new file mode 100644
index 0000000000..b9d8aff4df
--- /dev/null
+++ b/build/scripts/build_dll_and_java.py
@@ -0,0 +1,47 @@
+import os
+import subprocess
+import sys
+
+
+def just_do_it(argv):
+    delim = argv[0]
+    args = []
+    for item in argv:
+        if item == delim:
+            args.append([])
+        else:
+            args[-1].append(item)
+    dll_cmd, java_cmd, inputs, dll_out, java_out, jsrs_out, roots = args
+    dll_out, java_out, jsrs_out, build_root, source_root = dll_out[0], java_out[0], jsrs_out[0], roots[0], roots[1]
+    for inp in inputs:
+        origin_inp = inp
+        if os.path.isabs(inp):
+            if os.path.relpath(inp, build_root).startswith('..'):
+                inp = os.path.relpath(inp, source_root)
+            else:
+                inp = os.path.relpath(inp, build_root)
+        ext = os.path.splitext(inp)[1]
+        if ext in ('.o', '.obj'):
+            if os.path.join(build_root, inp) in java_cmd:
+                inp = os.path.join(build_root, inp)
+            if sys.platform == 'win32':
+                inp = inp.replace('\\', '/')
+                if inp not in java_cmd:
+                    inp = build_root + '/' + inp
+            java_cmd.remove(inp)
+        if ext in ('.java', '.jsrc'):
+            if origin_inp in dll_cmd:
+                inp = origin_inp
+            elif os.path.join(build_root, inp) in dll_cmd:
+                inp = os.path.join(build_root, inp)
+            if sys.platform == 'win32':
+                inp = inp.replace('\\', '/')
+            dll_cmd.remove(inp)
+    java_cmd.insert(java_cmd.index(dll_out), java_out)
+    java_cmd.remove(dll_out)
+    subprocess.check_call(java_cmd)
+    subprocess.check_call(dll_cmd)
+
+
+if __name__ == '__main__':
+    just_do_it(sys.argv[1:])
diff --git a/build/scripts/build_java_codenav_index.py b/build/scripts/build_java_codenav_index.py
new file mode 100644
index 0000000000..d7ac4f3213
--- /dev/null
+++ b/build/scripts/build_java_codenav_index.py
@@ -0,0 +1,49 @@
+import sys
+import re
+import os
+import subprocess
+
+FAKE_ARCADIA_ROOT = 'fake_arcadia_root'
+FAKE_BUILD_ROOT = 'fake_build_root'
+
+
+def modify_sources_file(origin, target, source_roots_map):
+    def _cut_source_root(src):
+        for pref, fake_root in source_roots_map.items():
+            if src.startswith(pref):
+                return os.path.join(fake_root, os.path.relpath(src, pref))
+        return src
+
+    with open(origin) as o:
+        srcs = [i for line in o for i in re.split('\\s+', line) if i]
+        new_srcs = map(_cut_source_root, srcs)
+    with open(target, 'w') as t:
+        t.write(' '.join(new_srcs))
+
+
+def just_do_it(argv):
+    corpus_name, build_root, arcadia_root, sources_file, javac_tail_cmd = argv[0], argv[1], argv[2], argv[3], argv[4:]
+    fake_arcadia_root = os.path.join(build_root, FAKE_ARCADIA_ROOT)
+    fake_build_root = os.path.join(build_root, FAKE_BUILD_ROOT)
+    fake_source_roots = {
+        arcadia_root: fake_arcadia_root,
+        build_root: fake_build_root,
+    }
+    modify_sources_file(sources_file, os.path.join(os.path.dirname(sources_file), '_' + os.path.basename(sources_file)), fake_source_roots)
+    kindex_data_root = '{}/kindex'.format(os.path.join(build_root, os.path.dirname(corpus_name)))
+    if not os.path.exists(kindex_data_root):
+        os.makedirs(kindex_data_root)
+    env = os.environ.copy()
+    env['KYTHE_ROOT_DIRECTORY'] = build_root
+    env['KYTHE_OUTPUT_DIRECTORY'] = kindex_data_root
+    env['KYTHE_CORPUS'] = os.path.relpath(corpus_name, build_root)
+    os.symlink(arcadia_root, fake_arcadia_root)
+    os.symlink(build_root, fake_build_root)
+    try:
+        subprocess.check_call(javac_tail_cmd, env=env)
+    finally:
+        os.unlink(fake_arcadia_root)
+        os.unlink(fake_build_root)
+
+if __name__ == '__main__':
+    just_do_it(sys.argv[1:])
diff --git a/build/scripts/build_java_with_error_prone.py b/build/scripts/build_java_with_error_prone.py
new file mode 100644
index 0000000000..910443552e
--- /dev/null
+++ b/build/scripts/build_java_with_error_prone.py
@@ -0,0 +1,36 @@
+import sys
+import os
+
+ERROR_PRONE_FLAGS = [
+    '-Xep:FunctionalInterfaceMethodChanged:WARN',
+    '-Xep:ReturnValueIgnored:WARN',
+]
+
+JAVA10_EXPORTS = [
+    '--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED'
+]
+
+
+def just_do_it(argv):
+    java, error_prone_tool, javac_cmd = argv[0], argv[1], argv[2:]
+    if java.endswith('javac') or java.endswith('javac.exe'):
+        for f in javac_cmd:
+            if f.startswith('-Xep'):
+                ERROR_PRONE_FLAGS.append(f)
+        for f in ERROR_PRONE_FLAGS:
+            if f in javac_cmd:
+                javac_cmd.remove(f)
+        os.execv(java, [java] + JAVA10_EXPORTS + ['-processorpath', error_prone_tool, '-XDcompilePolicy=byfile'] + [(' '.join(['-Xplugin:ErrorProne'] + ERROR_PRONE_FLAGS))] + javac_cmd)
+    else:
+        os.execv(java, [java, '-Xbootclasspath/p:' + error_prone_tool, 'com.google.errorprone.ErrorProneCompiler'] + ERROR_PRONE_FLAGS + javac_cmd)
+
+
+if __name__ == '__main__':
+    just_do_it(sys.argv[1:])
diff --git a/build/scripts/build_java_with_error_prone2.py b/build/scripts/build_java_with_error_prone2.py
new file mode 100644
index 0000000000..ddf1ccbfc1
--- /dev/null
+++ b/build/scripts/build_java_with_error_prone2.py
@@ -0,0 +1,87 @@
+import sys
+import os
+import re
+import subprocess
+import platform
+
+
+ERROR_PRONE_FLAGS = [
+    '-Xep:FunctionalInterfaceMethodChanged:WARN',
+    '-Xep:ReturnValueIgnored:WARN',
+]
+
+JAVA10_EXPORTS = [
+    '--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED',
+    '--add-exports=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED',
+]
+
+
+def get_java_version(exe):
+    p = subprocess.Popen([exe, '-version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    for line in (out or '').strip().split("\n") + (err or '').strip().split("\n"):
+        m = re.match(r'java version "(.+)"', line)
+        if m:
+            parts = m.groups()[0].split(".")
+            return parts[1] if parts[0] == "1" else parts[0]
+        m = re.match(r'openjdk version "(\d+).*"', line)
+        if m:
+            parts = m.groups()[0].split(".")
+            return parts[0]
+    return None
+
+
+def get_classpath(cmd):
+    for i, part in enumerate(cmd):
+        if part == '-classpath':
+            i += 1
+            if i < len(cmd):
+                return cmd[i]
+            else:
+                return None
+    return None
+
+
+def parse_args(argv):
+    parsed = []
+    for i in range(len(argv)):
+        if not argv[i].startswith('-'):
+            parsed.append(argv[i])
+            if len(parsed) >= 3:
+                break
+    return parsed + [argv[i + 1:]]
+
+
+def just_do_it(argv):
+    java, javac, error_prone_tool, javac_cmd = parse_args(argv)
+    ver = get_java_version(java)
+    if not ver:
+        raise Exception("Can't determine java version")
+    if int(ver) >= 10:
+        for f in javac_cmd:
+            if f.startswith('-Xep'):
+                ERROR_PRONE_FLAGS.append(f)
+        for f in ERROR_PRONE_FLAGS:
+            if f in javac_cmd:
+                javac_cmd.remove(f)
+        if '-processor' in javac_cmd:
+            classpath = get_classpath(javac_cmd)
+            if classpath:
+                error_prone_tool = error_prone_tool + os.pathsep + classpath
+        cmd = [javac] + JAVA10_EXPORTS + ['-processorpath', error_prone_tool, '-XDcompilePolicy=byfile'] + [(' '.join(['-Xplugin:ErrorProne'] + ERROR_PRONE_FLAGS))] + javac_cmd
+    else:
+        cmd = [java, '-Xbootclasspath/p:' + error_prone_tool, 'com.google.errorprone.ErrorProneCompiler'] + ERROR_PRONE_FLAGS + javac_cmd
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(cmd).wait())
+    else:
+        os.execv(cmd[0], cmd)
+
+
+if __name__ == '__main__':
+    just_do_it(sys.argv[1:])
diff --git a/build/scripts/build_mn.py b/build/scripts/build_mn.py
new file mode 100755
index 0000000000..5bb03c247c
--- /dev/null
+++ b/build/scripts/build_mn.py
@@ -0,0 +1,330 @@
+#!/usr/bin/env python
+# Ymake MatrixNet support
+
+import sys
+import os
+import shutil
+import re
+import subprocess
+
+
+def get_value(val):
+    dct = val.split('=', 1)
+    if len(dct) > 1:
+        return dct[1]
+    return ''
+
+
+class BuildMnBase(object):
+    def Run(self, mninfo, mnname, mnrankingSuffix, mncppPath, check=False, ptr=False, multi=False):
+        self.mninfo = mninfo
+        self.mnname = mnname
+        self.mnrankingSuffix = mnrankingSuffix
+        self.mncppPath = mncppPath
+        self.check = check
+        self.ptr = ptr
+        self.multi = multi
+        dataprefix = "MN_External_"
+        mninfoName = os.path.basename(self.mninfo)
+        data = dataprefix + mnname
+        datasize = data + "Size"
+
+        if self.multi:
+            if self.ptr:
+                mntype = "const NMatrixnet::TMnMultiCategPtr"
+                mnload = "(new NMatrixnet::TMnMultiCateg( {1}, {2}, \"{0}\"))".format(mninfoName, data, datasize)
+            else:
+                mntype = "const NMatrixnet::TMnMultiCateg"
+                mnload = "({1}, {2}, \"{0}\")".format(mninfoName, data, datasize)
+        else:
+            if self.ptr:
+                mntype = "const NMatrixnet::TMnSsePtr"
+                mnload = "(new NMatrixnet::TMnSseInfo({1}, {2}, \"{0}\"))".format(mninfoName, data, datasize)
+            else:
+                mntype = "const NMatrixnet::TMnSseInfo"
+                mnload = "({1}, {2}, \"{0}\")".format(mninfoName, data, datasize)
+
+        if self.check:
+            self.CheckMn()
+
+        mncpptmpPath = self.mncppPath + ".tmp"
+        mncpptmp = open(mncpptmpPath, 'w')
+
+        if self.multi:
+            mncpptmp.write("#include <kernel/matrixnet/mn_multi_categ.h>\n")
+        else:
+            mncpptmp.write("#include <kernel/matrixnet/mn_sse.h>\n")
+
+        rodatapath = os.path.dirname(self.mncppPath) + "/" + dataprefix + self.mnname + ".rodata"
+        mncpptmp.write("namespace{\n")
+        mncpptmp.write("    extern \"C\" {\n")
+        mncpptmp.write("        extern const unsigned char {1}{0}[];\n".format(self.mnname, dataprefix))
+        mncpptmp.write("        extern const ui32 {1}{0}Size;\n".format(self.mnname, dataprefix))
+        mncpptmp.write("    }\n")
+        mncpptmp.write("}\n")
+        archiverCall = subprocess.Popen([self.archiver, "-q", "-p", "-o", rodatapath, self.mninfo], stdout=None, stderr=subprocess.PIPE)
+        archiverCall.wait()
+        mncpptmp.write("extern {0} {1};\n".format(mntype, self.mnname))
+        mncpptmp.write("{0} {1}{2};".format(mntype, self.mnname, mnload))
+        mncpptmp.close()
+        shutil.move(mncpptmpPath, self.mncppPath)
+
+    def CheckMn(self):
+        if not self.fml_unused_tool:
+            print >>sys.stderr, "fml_unused_tool undefined!"
+        failed_msg = "fml_unused_tool failed: {0} -A {1} -e -r {2}".format(self.fml_unused_tool, self.SrcRoot, self.mninfo)
+        assert not subprocess.call([self.fml_unused_tool, "-A", self.SrcRoot, "-e", "-r", self.mninfo]), failed_msg
+
+
+class BuildMn(BuildMnBase):
+    def Run(self, argv):
+        if len(argv) < 6:
+            print >>sys.stderr, "BuildMn.Run(<ARCADIA_ROOT> <archiver> <mninfo> <mnname> <mnrankingSuffix> <cppOutput> [params...])"
+            sys.exit(1)
+
+        self.SrcRoot = argv[0]
+        self.archiver = argv[1]
+
+        mninfo = argv[2]
+        mnname = argv[3]
+        mnrankingSuffix = argv[4]
+        mncppPath = argv[5]
+        check = False
+        ptr = False
+        multi = False
+        self.fml_unused_tool = ''
+        for param in argv[6:]:
+            if param == "CHECK":
+                check = True
+            elif param == "PTR":
+                ptr = True
+            elif param == "MULTI":
+                multi = True
+            elif param.startswith('fml_tool='):
+                self.fml_unused_tool = get_value(param)
+            else:
+                print >>sys.stdout, "Unknown param: {0}".format(param)
+        super(BuildMn, self).Run(mninfo, mnname, mnrankingSuffix, mncppPath, check=check, ptr=ptr, multi=multi)
+
+
+class BuildMns(BuildMnBase):
+    def InitBase(self, listname, mnrankingSuffix):
+        self.autogen = '// DO NOT EDIT THIS FILE DIRECTLY, AUTOGENERATED!\n'
+        self.mnrankingSuffix = mnrankingSuffix
+        self.mnlistname = listname + mnrankingSuffix
+        self.mnlistelem = "const NMatrixnet::TMnSsePtr*"
+        mnlisttype = "TMap< TString, {0} >".format(self.mnlistelem)
+        self.mnlist = "const {0} {1}".format(mnlisttype, self.mnlistname)
+
+        self.mnmultilistname = "{0}{1}Multi".format(listname, self.mnrankingSuffix)
+        self.mnmultilistelem = "const NMatrixnet::TMnMultiCategPtr*"
+        mnmultilisttype = "TMap< TString, {0} >".format(self.mnmultilistelem)
+        self.mnmultilist = "const {0} {1}".format(mnmultilisttype, self.mnmultilistname)
+
+    def InitForAll(self, argv):
+        if len(argv) < 8:
+            print >>sys.stderr, "BuildMns.InitForAll(<ARCADIA_ROOT> <BINDIR> <archiver>  <listname> <mnranking_suffix> <hdrfile> <srcfile> <mninfos> [fml_tool=<fml_unused_tool> CHECK])"
+            sys.exit(1)
+
+        bmns_args = []
+        self.check = False
+        self.fml_unused_tool = ''
+        for arg in argv:
+            if arg == "CHECK":
+                self.check = True
+            elif arg.startswith('fml_tool='):
+                self.fml_unused_tool = get_value(arg)
+            else:
+                bmns_args.append(arg)
+
+        self.SrcRoot = bmns_args[0]
+        self.BINDIR = bmns_args[1]
+        self.archiver = bmns_args[2]
+        self.listname = bmns_args[3]
+        self.mnrankingSuffix = get_value(bmns_args[4])
+        self.hdrfile = bmns_args[5]
+        self.srcfile = bmns_args[6]
+        self.mninfos = bmns_args[7:]
+
+        self.InitBase(self.listname, self.mnrankingSuffix)
+
+    def InitForHeader(self, argv):
+        if len(argv) < 4:
+            print >>sys.stderr, "BuildMns.InitForHeader(<listname> <rankingSuffix> <hdrfile> <mninfos...>)"
+            sys.exit(1)
+
+        self.listname = argv[0]
+        self.mnrankingSuffix = get_value(argv[1])
+        self.hdrfile = argv[2]
+        self.mninfos = argv[3:]
+
+        self.InitBase(self.listname, self.mnrankingSuffix)
+
+    def InitForCpp(self, argv):
+        if len(argv) < 5:
+            print >>sys.stderr, "BuildMns.InitForCpp(<listname> <rankingSuffix> <hdrfile> <srcfile> <mninfos...>)"
+            sys.exit(1)
+
+        self.listname = argv[0]
+        self.mnrankingSuffix = get_value(argv[1])
+        self.hdrfile = argv[2]
+        self.srcfile = argv[3]
+        self.mninfos = argv[4:]
+
+        self.InitBase(self.listname, self.mnrankingSuffix)
+
+    def InitForFiles(self, argv):
+        if len(argv) < 7:
+            print >>sys.stderr, "BuildMns.InitForFiles(<ARCADIA_ROOT> <BINDIR> <archiver> <fml_unused_tool> <listname> <rankingSuffix> <mninfos...> [CHECK])"
+            sys.exit(1)
+
+        bmns_args = []
+        self.check = False
+        self.fml_unused_tool = ''
+        for arg in argv:
+            if arg == "CHECK":
+                self.check = True
+            elif arg.startswith('fml_tool='):
+                self.fml_unused_tool = get_value(arg)
+            else:
+                bmns_args.append(arg)
+
+        self.SrcRoot = bmns_args[0]
+        self.BINDIR = bmns_args[1]
+        self.archiver = bmns_args[2]
+        self.listname = bmns_args[3]
+        self.mnrankingSuffix = get_value(bmns_args[4])
+        self.mninfos = bmns_args[5:]
+
+    def BuildMnsHeader(self):
+        if self.mninfos:
+            self.mninfos = sorted(set(self.mninfos))
+
+        tmpHdrPath = self.hdrfile + ".tmp"
+        tmpHdrFile = open(tmpHdrPath, 'w')
+
+        tmpHdrFile.write(self.autogen)
+        tmpHdrFile.write("#include <kernel/matrixnet/mn_sse.h>\n")
+        tmpHdrFile.write("#include <kernel/matrixnet/mn_multi_categ.h>\n\n")
+        tmpHdrFile.write("extern {0};\n".format(self.mnlist))
+        tmpHdrFile.write("extern {0};\n".format(self.mnmultilist))
+
+        for item in self.mninfos:
+            mnfilename = os.path.basename(item)
+            mnfilename, ext = os.path.splitext(mnfilename)
+
+            mnname = re.sub("[^-a-zA-Z0-9_]", "_", mnfilename)
+
+            if ext == ".info":
+                mnname = "staticMn{0}{1}Ptr".format(self.mnrankingSuffix, mnname)
+                tmpHdrFile.write("extern const NMatrixnet::TMnSsePtr {0};\n".format(mnname))
+            elif ext == ".mnmc":
+                mnname = "staticMnMulti{0}{1}Ptr".format(self.mnrankingSuffix, mnname)
+                tmpHdrFile.write("extern const NMatrixnet::TMnMultiCategPtr {0};\n".format(mnname))
+
+        tmpHdrFile.close()
+        shutil.move(tmpHdrPath, self.hdrfile)
+
+    def BuildMnFiles(self):
+        for item in self.mninfos:
+            mnfilename = os.path.basename(item)
+            mnfilename, ext = os.path.splitext(mnfilename)
+
+            mnname = re.sub("[^-a-zA-Z0-9_]", "_", mnfilename)
+
+            if ext == ".info":
+                mnname = "staticMn{0}{1}Ptr".format(self.mnrankingSuffix, mnname)
+                super(BuildMns, self).Run(item, mnname, self.mnrankingSuffix, self.BINDIR + "/mn.{0}.cpp".format(mnname), check=self.check, ptr=True, multi=False)
+            elif ext == ".mnmc":
+                mnname = "staticMnMulti{0}{1}Ptr".format(self.mnrankingSuffix, mnname)
+                # BUILD_MN_PTR_MULTI
+                super(BuildMns, self).Run(item, mnname, self.mnrankingSuffix, self.BINDIR + "/mnmulti.{0}.cpp".format(mnname), check=False, ptr=True, multi=True)
+
+    def BuildMnsCpp(self):
+        if self.mninfos:
+            self.mninfos = sorted(set(self.mninfos))
+
+        tmpSrcPath = self.srcfile + ".tmp"
+        tmpSrcFile = open(tmpSrcPath, 'w')
+        hdrrel = os.path.basename(self.hdrfile)
+
+        mnnames = []
+        mnmultinames = []
+        for item in self.mninfos:
+            mnfilename = os.path.basename(item)
+            mnfilename, ext = os.path.splitext(mnfilename)
+
+            if ext == ".info":
+                mnnames.append(mnfilename)
+            elif ext == ".mnmc":
+                mnmultinames.append(mnfilename)
+
+        tmpSrcFile.write(self.autogen)
+        tmpSrcFile.write("#include \"{0}\"\n\n".format(hdrrel))
+
+        if mnnames:
+            mndata = self.mnlistname + "_data"
+            tmpSrcFile.write("static const std::pair< TString, {0} > {1}[] = {{\n".format(self.mnlistelem, mndata))
+            for item in mnnames:
+                mnname = re.sub("[^-a-zA-Z0-9_]", "_", item)
+                tmpSrcFile.write("    std::make_pair(TString(\"{0}\"), &staticMn{1}{2}Ptr),\n".format(item, self.mnrankingSuffix, mnname))
+            tmpSrcFile.write("};\n")
+            tmpSrcFile.write("{0}({1},{1} + sizeof({1}) / sizeof({1}[0]));\n\n".format(self.mnlist, mndata))
+        else:
+            tmpSrcFile.write("{0};\n\n".format(self.mnlist))
+
+        if mnmultinames:
+            mnmultidata = self.mnmultilistname + "_data"
+            tmpSrcFile.write("static const std::pair< TString, {0} > {1}[] = {{\n".format(self.mnmultilistelem, mnmultidata))
+            for item in mnmultinames:
+                mnname = re.sub("[^-a-zA-Z0-9_]", "_", item)
+                tmpSrcFile.write("    std::make_pair(TString(\"{0}\"), &staticMnMulti{1}{2}Ptr),\n".format(item, self.mnrankingSuffix, mnname))
+            tmpSrcFile.write("};\n")
+            tmpSrcFile.write("{0}({1},{1} + sizeof({1}) / sizeof({1}[0]));\n".format(self.mnmultilist, mnmultidata))
+        else:
+            tmpSrcFile.write("{0};\n".format(self.mnmultilist))
+
+        tmpSrcFile.close()
+        shutil.move(tmpSrcPath, self.srcfile)
+
+
+def BuildMnsAllF(argv):
+    bldMns = BuildMns()
+    bldMns.InitForAll(argv)
+    bldMns.BuildMnsCpp()
+    bldMns.BuildMnsHeader()
+    bldMns.BuildMnFiles()
+
+
+def BuildMnsCppF(argv):
+    bldMns = BuildMns()
+    bldMns.InitForCpp(argv)
+    bldMns.BuildMnsCpp()
+
+
+def BuildMnsHeaderF(argv):
+    bldMns = BuildMns()
+    bldMns.InitForHeader(argv)
+    bldMns.BuildMnsHeader()
+
+
+def BuildMnsFilesF(argv):
+    bldMns = BuildMns()
+    bldMns.InitForFiles(argv)
+    bldMns.BuildMnFiles()
+
+
+def BuildMnF(argv):
+    bldMn = BuildMn()
+    bldMn.Run(argv)
+
+
+if __name__ == '__main__':
+    if len(sys.argv) < 2:
+        print >>sys.stderr, "Usage: build_mn.py <funcName> <args...>"
+        sys.exit(1)
+
+    if (sys.argv[2:]):
+        globals()[sys.argv[1]](sys.argv[2:])
+    else:
+        globals()[sys.argv[1]]()
diff --git a/build/scripts/build_pln_header.py b/build/scripts/build_pln_header.py
new file mode 100755
index 0000000000..c73693f444
--- /dev/null
+++ b/build/scripts/build_pln_header.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+
+import sys
+import os
+
+
+def BuildPlnHeader():
+    if len(sys.argv) < 2:
+        print >>sys.stderr, "Usage: build_pln_header.py <absolute/path/to/OutFile>"
+        sys.exit(1)
+
+    print >>sys.stdout, "Build Pln Header..."
+    outPath = sys.argv[1]
+    tmpPath = outPath + '.tmp'
+    tmpFile = open(tmpPath, 'w')
+
+    tmpFile.write('#include <library/cpp/sse/sse.h>\n')
+    tmpFile.write('#include <kernel/relevfml/relev_fml.h>\n')
+    for path in sys.argv[2:]:
+        name = os.path.basename(path).split(".")[0]  # name without extensions
+        tmpFile.write('\nextern SRelevanceFormula fml{0};\n'.format(name))
+        tmpFile.write('float {0}(const float* f);\n'.format(name))
+        tmpFile.write('void {0}SSE(const float* const* factors, float* result);\n'.format(name))
+    tmpFile.close()
+    try:
+        os.remove(outPath)
+    except:
+        pass
+    try:
+        os.rename(tmpPath, outPath)
+    except:
+        print >>sys.stdout, 'Error: Failed to rename ' + tmpPath + ' to ' + outPath
+
+if __name__ == '__main__':
+    BuildPlnHeader()
diff --git a/build/scripts/c_templates/README.md b/build/scripts/c_templates/README.md
new file mode 100644
index 0000000000..96265c7fec
--- /dev/null
+++ b/build/scripts/c_templates/README.md
@@ -0,0 +1,3 @@
+### Usage
+
+Не используйте эту библиотеку напрямую. Следует пользоваться `library/cpp/svnversion/svnversion.h`.
diff --git a/build/scripts/c_templates/ya.make b/build/scripts/c_templates/ya.make
new file mode 100644
index 0000000000..b395e11021
--- /dev/null
+++ b/build/scripts/c_templates/ya.make
@@ -0,0 +1,7 @@
+OWNER(g:ymake)
+
+LIBRARY(dummy-vcs)
+NO_PLATFORM()
+
+SRCS(svn_interface.c)
+END()
diff --git a/build/scripts/cat.py b/build/scripts/cat.py
new file mode 100755
index 0000000000..0c3f73d96f
--- /dev/null
+++ b/build/scripts/cat.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+import sys
+from shutil import copyfileobj as copy
+import os.path
+
+if __name__ == '__main__':
+    for filename in sys.argv[1:] or ["-"]:
+        if filename == "-":
+            copy(sys.stdin, sys.stdout)
+        else:
+            if os.path.exists(filename):
+                with open(filename, 'rb') as file:
+                    copy(file, sys.stdout)
+            else:
+                sys.stderr.write('cat.py: {0}: No such file or directory\n'.format(filename))
diff --git a/build/scripts/cgo1_wrapper.py b/build/scripts/cgo1_wrapper.py
new file mode 100644
index 0000000000..986082f7e9
--- /dev/null
+++ b/build/scripts/cgo1_wrapper.py
@@ -0,0 +1,45 @@
+import argparse
+import shutil
+import subprocess
+import sys
+
+
+CGO1_SUFFIX='.cgo1.go'
+
+
+def call(cmd, cwd, env=None):
+    # sys.stderr.write('{}\n'.format(' '.join(cmd)))
+    return subprocess.call(cmd, stdin=None, stderr=sys.stderr, stdout=sys.stdout, cwd=cwd, env=env)
+
+
+def process_file(source_root, source_prefix, build_root, build_prefix, src_path, comment_prefix):
+    dst_path = '{}.tmp'.format(src_path)
+    with open(src_path, 'r') as src_file, open(dst_path, 'w') as dst_file:
+        for line in src_file:
+            if line.startswith(comment_prefix):
+                dst_file.write(line.replace(source_root, source_prefix).replace(build_root, build_prefix))
+            else:
+                dst_file.write(line)
+    shutil.move(dst_path, src_path)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--build-prefix', default='__ARCADIA_BUILD_ROOT_PREFIX__')
+    parser.add_argument('--build-root', required=True)
+    parser.add_argument('--cgo1-files', nargs='+', required=True)
+    parser.add_argument('--cgo2-files', nargs='+', required=True)
+    parser.add_argument('--source-prefix', default='__ARCADIA_SOURCE_ROOT_PREFIX__')
+    parser.add_argument('--source-root', required=True)
+    parser.add_argument('cgo1_cmd', nargs='*')
+    args = parser.parse_args()
+
+    exit_code = call(args.cgo1_cmd, args.source_root)
+    if exit_code != 0:
+        sys.exit(exit_code)
+
+    for src_path in args.cgo1_files:
+        process_file(args.source_root, args.source_prefix, args.build_root, args.build_prefix, src_path, '//')
+
+    for src_path in args.cgo2_files:
+        process_file(args.source_root, args.source_prefix, args.build_root, args.build_prefix, src_path, '#line')
diff --git a/build/scripts/check_config_h.py b/build/scripts/check_config_h.py
new file mode 100644
index 0000000000..07bc12e230
--- /dev/null
+++ b/build/scripts/check_config_h.py
@@ -0,0 +1,89 @@
+import sys
+
+data = """
+#if defined(SIZEOF_LONG)
+static_assert(sizeof(long) == SIZEOF_LONG, "fixme 1");
+#endif
+
+#if defined(SIZEOF_PTHREAD_T)
+#include <pthread.h>
+
+static_assert(sizeof(pthread_t) == SIZEOF_PTHREAD_T, "fixme 2");
+#endif
+
+#if defined(SIZEOF_SIZE_T)
+#include <stddef.h>
+
+static_assert(sizeof(size_t) == SIZEOF_SIZE_T, "fixme 3");
+#endif
+
+#if defined(SIZEOF_TIME_T)
+#include <time.h>
+
+static_assert(sizeof(time_t) == SIZEOF_TIME_T, "fixme 4");
+#endif
+
+#if defined(SIZEOF_UINTPTR_T)
+#include <stdint.h>
+
+static_assert(sizeof(uintptr_t) == SIZEOF_UINTPTR_T, "fixme 5");
+#endif
+
+#if defined(SIZEOF_VOID_P)
+static_assert(sizeof(void*) == SIZEOF_VOID_P, "fixme 6");
+#endif
+
+#if defined(SIZEOF_FPOS_T)
+#include <stdio.h>
+
+static_assert(sizeof(fpos_t) == SIZEOF_FPOS_T, "fixme 7");
+#endif
+
+#if defined(SIZEOF_DOUBLE)
+static_assert(sizeof(double) == SIZEOF_DOUBLE, "fixme 8");
+#endif
+
+#if defined(SIZEOF_LONG_DOUBLE)
+static_assert(sizeof(long double) == SIZEOF_LONG_DOUBLE, "fixme 9");
+#endif
+
+#if defined(SIZEOF_FLOAT)
+static_assert(sizeof(float) == SIZEOF_FLOAT, "fixme 10");
+#endif
+
+#if defined(SIZEOF_INT)
+static_assert(sizeof(int) == SIZEOF_INT, "fixme 11");
+#endif
+
+#if defined(SIZEOF_LONG_LONG)
+static_assert(sizeof(long long) == SIZEOF_LONG_LONG, "fixme 12");
+#endif
+
+#if defined(SIZEOF_OFF_T)
+#include <stdio.h>
+
+static_assert(sizeof(off_t) == SIZEOF_OFF_T, "fixme 13");
+#endif
+
+#if defined(SIZEOF_PID_T)
+#include <unistd.h>
+
+static_assert(sizeof(pid_t) == SIZEOF_PID_T, "fixme 14");
+#endif
+
+#if defined(SIZEOF_SHORT)
+static_assert(sizeof(short) == SIZEOF_SHORT, "fixme 15");
+#endif
+
+#if defined(SIZEOF_WCHAR_T)
+static_assert(sizeof(wchar_t) == SIZEOF_WCHAR_T, "fixme 16");
+#endif
+
+#if defined(SIZEOF__BOOL)
+//TODO
+#endif
+"""
+if __name__ == '__main__':
+    with open(sys.argv[2], 'w') as f:
+        f.write('#include <' + sys.argv[1] + '>\n\n')
+        f.write(data)
diff --git a/build/scripts/clang_tidy.py b/build/scripts/clang_tidy.py
new file mode 100644
index 0000000000..c0c23b490a
--- /dev/null
+++ b/build/scripts/clang_tidy.py
@@ -0,0 +1,185 @@
+import argparse
+import json
+import os
+import re
+import shutil
+import sys
+
+import subprocess
+
+import yaml
+
+
+def setup_script(args):
+    global tidy_config_validation
+    sys.path.append(os.path.dirname(args.config_validation_script))
+    import tidy_config_validation
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--testing-src", required=True)
+    parser.add_argument("--clang-tidy-bin", required=True)
+    parser.add_argument("--config-validation-script", required=True)
+    parser.add_argument("--ymake-python", required=True)
+    parser.add_argument("--tidy-json", required=True)
+    parser.add_argument("--source-root", required=True)
+    parser.add_argument("--build-root", required=True)
+    parser.add_argument("--default-config-file", required=True)
+    parser.add_argument("--project-config-file", required=True)
+    parser.add_argument("--export-fixes", required=True)
+    parser.add_argument("--checks", required=False, default="")
+    parser.add_argument("--header-filter", required=False, default=None)
+    return parser.parse_known_args()
+
+
+def generate_compilation_database(clang_cmd, source_root, filename, path):
+    compile_database = [
+        {
+            "file": filename,
+            "command": subprocess.list2cmdline(clang_cmd),
+            "directory": source_root,
+        }
+    ]
+    compilation_database_json = os.path.join(path, "compile_commands.json")
+    with open(compilation_database_json, "w") as afile:
+        json.dump(compile_database, afile)
+    return compilation_database_json
+
+
+def load_profile(path):
+    if os.path.exists(path):
+        files = os.listdir(path)
+        if len(files) == 1:
+            with open(os.path.join(path, files[0])) as afile:
+                return json.load(afile)["profile"]
+        elif len(files) > 1:
+            return {
+                "error": "found several profile files: {}".format(files),
+            }
+    return {
+        "error": "profile file is missing",
+    }
+
+
+def load_fixes(path):
+    if os.path.exists(path):
+        with open(path, 'r') as afile:
+            return afile.read()
+    else:
+        return ""
+
+
+def is_generated(testing_src, build_root):
+    return testing_src.startswith(build_root)
+
+
+def generate_outputs(output_json):
+    output_obj = os.path.splitext(output_json)[0] + ".o"
+    open(output_obj, "w").close()
+    open(output_json, "w").close()
+
+
+def filter_configs(result_config, filtered_config):
+    with open(result_config, 'r') as afile:
+        input_config = yaml.safe_load(afile)
+    result_config = tidy_config_validation.filter_config(input_config)
+    with open(filtered_config, 'w') as afile:
+        yaml.safe_dump(result_config, afile)
+
+
+def filter_cmd(cmd):
+    skip = True
+
+    for x in cmd:
+        if not skip:
+            yield x
+
+        if '/wrapcc.py' in x:
+            skip = False
+
+
+def main():
+    args, clang_cmd = parse_args()
+    if '/wrapcc.py' in str(clang_cmd):
+        clang_cmd = list(filter_cmd(clang_cmd))
+    setup_script(args)
+    clang_tidy_bin = args.clang_tidy_bin
+    output_json = args.tidy_json
+    generate_outputs(output_json)
+    if is_generated(args.testing_src, args.build_root):
+        return
+    if args.header_filter is None:
+        # .pb.h files will be excluded because they are not in source_root
+        header_filter = r"^" + re.escape(os.path.dirname(args.testing_src)) + r".*"
+    else:
+        header_filter = r"^(" + args.header_filter + r").*"
+
+    def ensure_clean_dir(path):
+        path = os.path.join(args.build_root, path)
+        if os.path.exists(path):
+            shutil.rmtree(path)
+        os.makedirs(path)
+        return path
+
+    profile_tmpdir = ensure_clean_dir("profile_tmpdir")
+    db_tmpdir = ensure_clean_dir("db_tmpdir")
+    fixes_file = "fixes.txt"
+    config_dir = ensure_clean_dir("config_dir")
+    result_config_file = args.default_config_file
+    if args.project_config_file != args.default_config_file:
+        result_config = os.path.join(config_dir, "result_tidy_config.yaml")
+        filtered_config = os.path.join(config_dir, "filtered_tidy_config.yaml")
+        filter_configs(args.project_config_file, filtered_config)
+        result_config_file = tidy_config_validation.merge_tidy_configs(
+            base_config_path=args.default_config_file,
+            additional_config_path=filtered_config,
+            result_config_path=result_config,
+        )
+    compile_command_path = generate_compilation_database(clang_cmd, args.source_root, args.testing_src, db_tmpdir)
+
+    cmd = [
+        clang_tidy_bin,
+        args.testing_src,
+        "-p",
+        compile_command_path,
+        "--warnings-as-errors",
+        "*",
+        "--config-file",
+        result_config_file,
+        "--header-filter",
+        header_filter,
+        "--use-color",
+        "--enable-check-profile",
+        "--store-check-profile={}".format(profile_tmpdir),
+    ]
+    if args.export_fixes == "yes":
+        cmd += ["--export-fixes", fixes_file]
+
+    if args.checks:
+        cmd += ["--checks", args.checks]
+
+    print("cmd: {}".format(' '.join(cmd)))
+    res = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = res.communicate()
+    out = out.replace(args.source_root, "$(SOURCE_ROOT)")
+    profile = load_profile(profile_tmpdir)
+    testing_src = os.path.relpath(args.testing_src, args.source_root)
+    tidy_fixes = load_fixes(fixes_file)
+
+    with open(output_json, "wb") as afile:
+        json.dump(
+            {
+                "file": testing_src,
+                "exit_code": res.returncode,
+                "profile": profile,
+                "stderr": err,
+                "stdout": out,
+                "fixes": tidy_fixes,
+            },
+            afile,
+        )
+
+
+if __name__ == "__main__":
+    main()
diff --git a/build/scripts/clang_tidy_arch.py b/build/scripts/clang_tidy_arch.py
new file mode 100644
index 0000000000..7caf623a3d
--- /dev/null
+++ b/build/scripts/clang_tidy_arch.py
@@ -0,0 +1,33 @@
+import os
+import argparse
+import json
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--output-file")
+    parser.add_argument("--build-root")
+    parser.add_argument("--source-root")
+    return parser.parse_known_args()
+
+
+def main():
+    args, unknown_args = parse_args()
+    inputs = unknown_args
+    result_json = {}
+    for inp in inputs:
+        if os.path.exists(inp) and inp.endswith("tidyjson"):
+            with open(inp, 'r') as afile:
+                file_content = afile.read().strip()
+                if not file_content:
+                    continue
+                errors = json.loads(file_content)
+            testing_src = errors["file"]
+            result_json[testing_src] = errors
+
+    with open(args.output_file, 'w') as afile:
+        json.dump(result_json, afile, indent=4)  # TODO remove indent
+
+
+if __name__ == "__main__":
+    main()
diff --git a/build/scripts/clang_wrapper.py b/build/scripts/clang_wrapper.py
new file mode 100644
index 0000000000..af3869f789
--- /dev/null
+++ b/build/scripts/clang_wrapper.py
@@ -0,0 +1,53 @@
+import subprocess
+import sys
+
+
+def fix(s):
+    # disable dbg DEVTOOLS-2744
+    if s == '-g':
+        return None
+    if s == '/Z7' or s == '/Od' or s == '/Ob0' or s == '/D_DEBUG':
+        return None
+
+    # disable sanitizers for generated code
+    if s.startswith('-fsanitize') or s == '-Dmemory_sanitizer_enabled' or s.startswith('-fsanitize-blacklist'):
+        return None
+
+    # strip gcc toolchain flags (appear when crosscompiling)
+    if s.startswith('-fabi-version'):
+        return None
+
+    # remove arguments unknown to clang-cl
+    if s == '-fcase-insensitive-paths':  # or s == '-fno-lto':  # DEVTOOLSSUPPORT-3966
+        return None
+
+    # Paths under .ya/tools/v3/.../msvc/include are divided with '\'
+    return s.replace('\\', '/')
+
+
+def fix_path(p):
+    try:
+        i = p.rfind('/bin/clang')
+        p = p[:i] + '/bin/clang-cl'
+    except ValueError:
+        pass
+    return p
+
+
+if __name__ == '__main__':
+    is_on_win = sys.argv[1] == 'yes'
+    path = sys.argv[2]
+    args = filter(None, [fix(s) for s in sys.argv[3:]])
+    if is_on_win:
+        path = fix_path(path)
+        try:
+            i = args.index('-emit-llvm')
+            args[i:i+1] = ['-Xclang', '-emit-llvm']
+        except ValueError:
+            pass
+        args.append('-fms-compatibility-version=19')
+
+    cmd = [path] + args
+
+    rc = subprocess.call(cmd, shell=False, stderr=sys.stderr, stdout=sys.stdout)
+    sys.exit(rc)
diff --git a/build/scripts/collect_java_srcs.py b/build/scripts/collect_java_srcs.py
new file mode 100644
index 0000000000..170002520a
--- /dev/null
+++ b/build/scripts/collect_java_srcs.py
@@ -0,0 +1,51 @@
+import os
+import sys
+import contextlib
+import tarfile
+import zipfile
+
+
+if __name__ == '__main__':
+    build_root = sys.argv[1]
+    root = os.path.normpath(sys.argv[2])
+    dest = os.path.normpath(sys.argv[3])
+    srcs = sys.argv[4:]
+
+    for src in srcs:
+        src = os.path.normpath(src)
+        if src.endswith('.java') or src.endswith('.kt'):
+            src_rel_path = os.path.relpath(src, root)
+
+            if os.path.join(root, src_rel_path) == src:
+                # Inside root
+                dst = os.path.join(dest, src_rel_path)
+
+            else:
+                # Outside root
+                print>>sys.stderr, 'External src file "{}" is outside of srcdir {}, ignore'.format(
+                    os.path.relpath(src, build_root),
+                    os.path.relpath(root, build_root),
+                )
+                continue
+
+            if os.path.exists(dst):
+                print>>sys.stderr, 'Duplicate external src file {}, choice is undefined'.format(
+                    os.path.relpath(dst, root)
+                )
+
+            else:
+                destdir = os.path.dirname(dst)
+                if destdir and not os.path.exists(destdir):
+                    os.makedirs(destdir)
+                os.rename(src, dst)
+
+        elif src.endswith('.jsr'):
+            with contextlib.closing(tarfile.open(src, 'r')) as tf:
+                tf.extractall(dst)
+
+        elif src.endswith('-sources.jar'):
+            with zipfile.ZipFile(src) as zf:
+                zf.extractall(dst)
+
+        else:
+            print>>sys.stderr, 'Unrecognized file type', os.path.relpath(src, build_root)
diff --git a/build/scripts/compile_cuda.py b/build/scripts/compile_cuda.py
new file mode 100644
index 0000000000..f8e1fa2b6d
--- /dev/null
+++ b/build/scripts/compile_cuda.py
@@ -0,0 +1,168 @@
+import sys
+import subprocess
+import os
+import collections
+import re
+import tempfile
+
+
+def is_clang(command):
+    for word in command:
+        if '--compiler-bindir' in word and 'clang' in word:
+            return True
+
+    return False
+
+
+def main():
+    try:
+        sys.argv.remove('--y_skip_nocxxinc')
+        skip_nocxxinc = True
+    except ValueError:
+        skip_nocxxinc = False
+
+    spl = sys.argv.index('--cflags')
+    cmd = 1
+    mtime0 = None
+    if sys.argv[1] == '--mtime':
+        mtime0 = sys.argv[2]
+        cmd = 3
+    command = sys.argv[cmd: spl]
+    cflags = sys.argv[spl + 1:]
+
+    dump_args = False
+    if '--y_dump_args' in command:
+        command.remove('--y_dump_args')
+        dump_args = True
+
+    executable = command[0]
+    if not os.path.exists(executable):
+        print >> sys.stderr, '{} not found'.format(executable)
+        sys.exit(1)
+
+    if is_clang(command):
+        # nvcc concatenates the sources for clang, and clang reports unused
+        # things from .h files as if they they were defined in a .cpp file.
+        cflags += ['-Wno-unused-function', '-Wno-unused-parameter']
+
+    if not is_clang(command) and '-fopenmp=libomp' in cflags:
+        cflags.append('-fopenmp')
+        cflags.remove('-fopenmp=libomp')
+
+    skip_list = [
+        '-gline-tables-only',
+        # clang coverage
+        '-fprofile-instr-generate',
+        '-fcoverage-mapping',
+        '/Zc:inline',  # disable unreferenced functions (kernel registrators) remove
+        '-Wno-c++17-extensions',
+        '-flto',
+        '-faligned-allocation',
+        '-fsized-deallocation',
+        # While it might be reasonable to compile host part of .cu sources with these optimizations enabled,
+        # nvcc passes these options down towards cicc which lacks x86_64 extensions support.
+        '-msse2',
+        '-msse3',
+        '-mssse3',
+        '-msse4.1',
+        '-msse4.2',
+    ]
+
+    if skip_nocxxinc:
+        skip_list.append('-nostdinc++')
+
+    for flag in skip_list:
+        if flag in cflags:
+            cflags.remove(flag)
+
+    skip_prefix_list = [
+        '-fsanitize=',
+        '-fsanitize-coverage=',
+        '-fsanitize-blacklist=',
+        '--system-header-prefix',
+    ]
+    new_cflags = []
+    for flag in cflags:
+        if all(not flag.startswith(skip_prefix) for skip_prefix in skip_prefix_list):
+            if flag.startswith('-fopenmp-version='):
+                new_cflags.append('-fopenmp-version=45')  # Clang 11 only supports OpenMP 4.5, but the default is 5.0, so we need to forcefully redefine it.
+            else:
+                new_cflags.append(flag)
+    cflags = new_cflags
+
+    if not is_clang(command):
+        def good(arg):
+            if arg.startswith('--target='):
+                return False
+            return True
+        cflags = filter(good, cflags)
+
+    cpp_args = []
+    compiler_args = []
+
+    # NVCC requires particular MSVC versions which may differ from the version
+    # used to compile regular C++ code. We have a separate MSVC in Arcadia for
+    # the CUDA builds and pass it's root in $Y_VC_Root.
+    # The separate MSVC for CUDA may absent in Yandex Open Source builds.
+    vc_root = os.environ.get('Y_VC_Root')
+
+    cflags_queue = collections.deque(cflags)
+    while cflags_queue:
+
+        arg = cflags_queue.popleft()
+        if arg == '-mllvm':
+            compiler_args.append(arg)
+            compiler_args.append(cflags_queue.popleft())
+            continue
+        if arg[:2].upper() in ('-I', '/I', '-B'):
+            value = arg[2:]
+            if not value:
+                value = cflags_queue.popleft()
+            if arg[1] == 'I':
+                cpp_args.append('-I{}'.format(value))
+            elif arg[1] == 'B':  # todo: delete "B" flag check when cuda stop to use gcc
+                pass
+            continue
+
+        match = re.match(r'[-/]D(.*)', arg)
+        if match:
+            define = match.group(1)
+            # We have C++ flags configured for the regular C++ build.
+            # There is Y_MSVC_INCLUDE define with a path to the VC header files.
+            # We need to change the path accordingly when using a separate MSVC for CUDA.
+            if vc_root and define.startswith('Y_MSVC_INCLUDE'):
+                define = os.path.expandvars('Y_MSVC_INCLUDE={}/include'.format(vc_root))
+            cpp_args.append('-D' + define.replace('\\', '/'))
+            continue
+
+        compiler_args.append(arg)
+
+    command += cpp_args
+    if compiler_args:
+        command += ['--compiler-options', ','.join(compiler_args)]
+
+    # --keep is necessary to prevent nvcc from embedding nvcc pid in generated
+    # symbols.  It makes nvcc use the original file name as the prefix in the
+    # generated files (otherwise it also prepends tmpxft_{pid}_00000000-5), and
+    # cicc derives the module name from its {input}.cpp1.ii file name.
+    command += ['--keep', '--keep-dir', tempfile.mkdtemp(prefix='compile_cuda.py.')]
+    # nvcc generates symbols like __fatbinwrap_{len}_{basename}_{hash} where
+    # {basename} is {input}.cpp1.ii with non-C chars translated to _, {len} is
+    # {basename} length, and {hash} is the hash of first exported symbol in
+    # {input}.cpp1.ii if there is one, otherwise it is based on its modification
+    # time (converted to string in the local timezone) and the current working
+    # directory.  To stabilize the names of these symbols we need to fix mtime,
+    # timezone, and cwd.
+    if mtime0:
+        os.environ['LD_PRELOAD'] = mtime0
+    os.environ['TZ'] = 'UTC0'  # POSIX fixed offset format.
+    os.environ['TZDIR'] = '/var/empty'  # Against counterfeit /usr/share/zoneinfo/$TZ.
+
+    if dump_args:
+        sys.stdout.write('\n'.join(command))
+    else:
+        sys.exit(subprocess.Popen(command, stdout=sys.stderr, stderr=sys.stderr, cwd='/').wait())
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/compile_java.py b/build/scripts/compile_java.py
new file mode 100644
index 0000000000..7b6455ebf0
--- /dev/null
+++ b/build/scripts/compile_java.py
@@ -0,0 +1,122 @@
+import argparse
+import contextlib
+from distutils import dir_util
+import os
+import shutil
+import subprocess as sp
+import tarfile
+import zipfile
+import sys
+
+
+def parse_args(args):
+    parser = argparse.ArgumentParser(description='Wrapper to invoke Java compilation from ya make build')
+    parser.add_argument('--javac-bin', help='path to javac')
+    parser.add_argument('--jar-bin', help='path to jar tool')
+    parser.add_argument('--java-bin', help='path to java binary')
+    parser.add_argument('--kotlin-compiler', help='path to kotlin compiler jar file')
+    parser.add_argument('--vcs-mf', help='path to VCS info manifest snippet')
+    parser.add_argument('--package-prefix', help='package prefix for resource files')
+    parser.add_argument('--jar-output', help='jar file with compiled classes destination path')
+    parser.add_argument('--srcs-jar-output', help='jar file with sources destination path')
+    parser.add_argument('srcs', nargs="*")
+    args = parser.parse_args(args)
+    return args, args.srcs
+
+
+def mkdir_p(directory):
+    if not os.path.exists(directory):
+        os.makedirs(directory)
+
+
+def split_cmd_by_delim(cmd, delim='DELIM'):
+    result = [[]]
+    for arg in cmd:
+        if arg == delim:
+            result.append([])
+        else:
+            result[-1].append(arg)
+    return result
+
+
+def main():
+    cmd_parts = split_cmd_by_delim(sys.argv[1:])
+    assert len(cmd_parts) == 4
+    args, javac_opts, peers, ktc_opts = cmd_parts
+    opts, jsrcs = parse_args(args)
+
+    jsrcs += list(filter(lambda x: x.endswith('.jsrc'), peers))
+    peers = list(filter(lambda x: not x.endswith('.jsrc'), peers))
+
+    sources_dir = 'src'
+    mkdir_p(sources_dir)
+    for s in jsrcs:
+        if s.endswith('.jsrc'):
+            with contextlib.closing(tarfile.open(s, 'r')) as tf:
+                tf.extractall(sources_dir)
+
+    srcs = []
+    for r, _, files in os.walk(sources_dir):
+        for f in files:
+            srcs.append(os.path.join(r, f))
+    srcs += jsrcs
+    ktsrcs = list(filter(lambda x: x.endswith('.kt'), srcs))
+    srcs = list(filter(lambda x: x.endswith('.java'), srcs))
+
+    classes_dir = 'cls'
+    mkdir_p(classes_dir)
+    classpath = os.pathsep.join(peers)
+
+    if srcs:
+        temp_sources_file = 'temp.sources.list'
+        with open(temp_sources_file, 'w') as ts:
+            ts.write(' '.join(srcs))
+
+    if ktsrcs:
+        temp_kt_sources_file = 'temp.kt.sources.list'
+        with open(temp_kt_sources_file, 'w') as ts:
+            ts.write(' '.join(ktsrcs + srcs))
+        kt_classes_dir = 'kt_cls'
+        mkdir_p(kt_classes_dir)
+        sp.check_call([opts.java_bin, '-jar', opts.kotlin_compiler, '-classpath', classpath, '-d', kt_classes_dir] + ktc_opts + ['@' + temp_kt_sources_file])
+        classpath = os.pathsep.join([kt_classes_dir, classpath])
+
+    if srcs:
+        sp.check_call([opts.javac_bin, '-nowarn', '-g', '-classpath', classpath, '-encoding', 'UTF-8', '-d', classes_dir] + javac_opts + ['@' + temp_sources_file])
+
+    for s in jsrcs:
+        if s.endswith('-sources.jar'):
+            with zipfile.ZipFile(s) as zf:
+                zf.extractall(sources_dir)
+
+        elif s.endswith('.jar'):
+            with zipfile.ZipFile(s) as zf:
+                zf.extractall(classes_dir)
+
+    if ktsrcs:
+        dir_util.copy_tree(kt_classes_dir, classes_dir)
+
+    if opts.vcs_mf:
+        sp.check_call([opts.jar_bin, 'cfm', opts.jar_output, opts.vcs_mf, os.curdir], cwd=classes_dir)
+    else:
+        sp.check_call([opts.jar_bin, 'cfM', opts.jar_output, os.curdir], cwd=classes_dir)
+
+    if opts.srcs_jar_output:
+        for s in jsrcs:
+            if s.endswith('.java'):
+                if opts.package_prefix:
+                    d = os.path.join(sources_dir, *(opts.package_prefix.split('.') + [os.path.basename(s)]))
+
+                else:
+                    d = os.path.join(sources_dir, os.path.basename(s))
+
+                shutil.copyfile(s, d)
+
+        if opts.vcs_mf:
+            sp.check_call([opts.jar_bin, 'cfm', opts.srcs_jar_output, opts.vcs_mf, os.curdir], cwd=sources_dir)
+        else:
+            sp.check_call([opts.jar_bin, 'cfM', opts.srcs_jar_output, os.curdir], cwd=sources_dir)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/compile_jsrc.py b/build/scripts/compile_jsrc.py
new file mode 100644
index 0000000000..8760e5eee9
--- /dev/null
+++ b/build/scripts/compile_jsrc.py
@@ -0,0 +1,24 @@
+import argparse
+import os
+import tarfile
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--input', nargs='*', required=True)
+    parser.add_argument('--output', required=True)
+    parser.add_argument('--prefix', required=True)
+
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+
+    with tarfile.open(args.output, 'w') as out:
+        for f in args.input:
+            out.add(f, arcname=os.path.relpath(f, args.prefix))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/compile_pysrc.py b/build/scripts/compile_pysrc.py
new file mode 100644
index 0000000000..e3637e18e2
--- /dev/null
+++ b/build/scripts/compile_pysrc.py
@@ -0,0 +1,101 @@
+import argparse
+import os
+import shutil
+import subprocess
+import tarfile
+
+
+LIMIT = 6000
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--input', required=True)
+    parser.add_argument('--output', required=True)
+    parser.add_argument('--rescompiler', required=True)
+    subparsers = parser.add_subparsers(dest='mode')
+
+    parser_py2 = subparsers.add_parser('py2')
+    parser_py2.add_argument('--py_compile', required=True)
+    parser_py2.add_argument('--python', required=True)
+
+    parser_py3 = subparsers.add_parser('py3')
+    parser_py3.add_argument('--pycc', required=True)
+
+    return parser.parse_args()
+
+
+def call(cmd, cwd=None, env=None):
+    return subprocess.check_output(cmd, stdin=None, stderr=subprocess.STDOUT, cwd=cwd, env=env)
+
+
+def iterate_py2_resource_params(py_files):
+    for py in py_files:
+        mod = py[:-3].replace('/', '.')
+        key = '/py_modules/{}'.format(mod)
+        yield py, key
+        yield '-', 'resfs/src/{}={}'.format(key, py)
+        yield '{}.yapyc'.format(py), '/py_code/{}'.format(mod)
+
+
+def iterate_py3_resource_params(py_files):
+    for py in py_files:
+        for ext in ('', '.yapyc3'):
+            path = '{}{}'.format(py, ext)
+            dest = 'py/{}'.format(path)
+            key = 'resfs/file/{}'.format(dest)
+            src = 'resfs/src/{}={}'.format(key, os.path.basename(path))
+            yield '-', src
+            yield path, key
+
+
+def main():
+    args = parse_args()
+
+    names = []
+    with tarfile.open(args.input, 'r') as tar:
+        names = tar.getnames()
+        tar.extractall()
+
+    if args.mode == 'py3':
+        pycc_cmd = [args.pycc]
+        pycc_ext = '.yapyc3'
+        iterate_resource_params = iterate_py3_resource_params
+    else:
+        pycc_cmd = [args.python, args.py_compile]
+        pycc_ext = '.yapyc'
+        iterate_resource_params = iterate_py2_resource_params
+
+    py_files = sorted(names)
+
+    for py in py_files:
+        cmd = pycc_cmd + ['{}-'.format(os.path.basename(py)), py, '{}{}'.format(py, pycc_ext)]
+        call(cmd)
+
+    outputs = []
+    cmd = [args.rescompiler, '{}.0'.format(args.output)]
+    size = 0
+    for path, key in iterate_resource_params(py_files):
+        addendum = len(path) + len(key)
+        if size + addendum > LIMIT and len(cmd) > 2:
+            call(cmd)
+            outputs.append(cmd[1])
+            cmd[1] = '{}.{}'.format(args.output, len(outputs))
+            cmd = cmd[0:2]
+            size = 0
+        cmd.extend([path, key])
+        size += addendum
+    if len(outputs) == 0:
+        cmd[1] = args.output
+        call(cmd)
+    else:
+        call(cmd)
+        outputs.append(cmd[1])
+        with open(args.output, 'w') as fout:
+            for fname in outputs:
+                with open(fname, 'r') as fin:
+                    shutil.copyfileobj(fin, fout)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/configure_file.py b/build/scripts/configure_file.py
new file mode 100755
index 0000000000..193ad7ec9e
--- /dev/null
+++ b/build/scripts/configure_file.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python2.7
+
+import sys
+import os.path
+import re
+
+cmakeDef01 = "#cmakedefine01"
+cmakeDef = "#cmakedefine"
+
+
+def replaceLine(l, varDict, define):
+    words = l.split()
+    if words:
+        if words[0] == cmakeDef:
+            sPos = l.find(cmakeDef)
+            ePos = sPos + len(cmakeDef)
+            l = l[:sPos] + define + l[ePos:] + '\n'
+        if words[0] == cmakeDef01:
+            var = words[1]
+            cmakeValue = varDict.get(var)
+            if cmakeValue == 'yes':
+                val = '1'
+            else:
+                val = '0'
+            sPos = l.find(cmakeDef01)
+            ePos = l.find(var) + len(var)
+            l = l[:sPos] + define + ' ' + var + ' ' + val + l[ePos + 1:] + '\n'
+
+    finder = re.compile(".*?(@[a-zA-Z0-9_]+@).*")
+    while True:
+        re_result = finder.match(l)
+        if not re_result:
+            return l
+        key = re_result.group(1)[1:-1]
+        l = l[:re_result.start(1)] + varDict.get(key, '') + l[re_result.end(1):]
+
+
+def main(inputPath, outputPath, varDict):
+    define = '#define' if os.path.splitext(outputPath)[1] != '.asm' else '%define'
+    with open(outputPath, 'w') as output:
+        with open(inputPath, 'r') as input:
+            for l in input:
+                output.write(replaceLine(l, varDict, define))
+
+
+def usage():
+    print("usage: configure_file.py inputPath outputPath key1=value1 ...")
+    exit(1)
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 3:
+        usage()
+    varDict = {}
+    for x in sys.argv[3:]:
+        key, value = str(x).split('=', 1)
+        varDict[key] = value
+
+    main(sys.argv[1], sys.argv[2], varDict)
diff --git a/build/scripts/container.py b/build/scripts/container.py
new file mode 100644
index 0000000000..27e6f921f3
--- /dev/null
+++ b/build/scripts/container.py
@@ -0,0 +1,30 @@
+import subprocess
+import os
+import shutil
+
+
+class ContainerError(Exception):
+    pass
+
+
+def join_layers(input_paths, output_path, squashfs_path):
+
+    if len(input_paths) == 1:
+        shutil.copy2(input_paths[0], output_path)
+
+    else:
+        # We cannot use appending here as it doesn't allow replacing files
+        for input_path in input_paths:
+            unpack_cmd = [ os.path.join(squashfs_path, 'unsquashfs') ]
+            unpack_cmd.extend([ '-f', input_path ])
+            subprocess.run(unpack_cmd)
+
+        pack_cmd = [ os.path.join(squashfs_path, 'mksquashfs') ]
+        pack_cmd.append(os.path.join(os.curdir, 'squashfs-root'))
+        pack_cmd.append(output_path)
+        pack_cmd.append('-all-root')
+        subprocess.run(pack_cmd)
+
+        shutil.rmtree(os.path.join(os.curdir, 'squashfs-root'))
+
+    return 0
diff --git a/build/scripts/copy_docs_files.py b/build/scripts/copy_docs_files.py
new file mode 100644
index 0000000000..c444dd509d
--- /dev/null
+++ b/build/scripts/copy_docs_files.py
@@ -0,0 +1,102 @@
+import argparse
+import codecs
+import errno
+import os
+import process_command_files as pcf
+import shutil
+import sys
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--build-root', required=True)
+    parser.add_argument('--dst-dir', required=True)
+    parser.add_argument('--existing', choices=('skip', 'overwrite'), default='overwrite')
+    parser.add_argument('--source-root', required=True)
+    parser.add_argument('--src-dir', required=None)
+    parser.add_argument('files', nargs='*')
+    return parser.parse_args(pcf.get_args(sys.argv[1:]))
+
+
+def makedirs(dirname):
+    try:
+        os.makedirs(dirname)
+    except OSError as e:
+        if e.errno == errno.EEXIST and os.path.isdir(dirname):
+            pass
+        else:
+            raise
+
+
+def copy_file(src, dst, overwrite=False, orig_path=None, generated=False):
+    if os.path.exists(dst) and not overwrite:
+        return
+
+    makedirs(os.path.dirname(dst))
+
+    with open(src, 'rb') as fsrc, open(dst, 'wb') as fdst:
+        if (orig_path or generated) and src.endswith('.md'):
+            out = b''
+            buf = fsrc.readline()
+            bom_length = len(codecs.BOM_UTF8)
+            if buf[:bom_length] == codecs.BOM_UTF8:
+                out += codecs.BOM_UTF8
+                buf = buf[bom_length:]
+            info = 'generated: true\n' if generated else 'vcsPath: {}\n'.format(orig_path)
+            if buf.startswith(b'---') and b'\n' in buf[3:] and buf[3:].rstrip(b'\r\n') == b'':
+                content = b''
+                found = False
+                while True:
+                    line = fsrc.readline()
+                    if len(line) == 0:
+                        break
+                    content += line
+                    if line.startswith(b'---') and line[3:].rstrip(b'\r\n') == b'':
+                        found = True
+                        break
+                out += buf
+                if found:
+                    out += info.encode('utf-8')
+                out += content
+            else:
+                out += '---\n{}---\n'.format(info).encode('utf-8')
+                out += buf
+            fdst.write(out)
+        shutil.copyfileobj(fsrc, fdst)
+
+
+def main():
+    args = parse_args()
+
+    source_root = os.path.normpath(args.source_root) + os.path.sep
+    build_root = os.path.normpath(args.build_root) + os.path.sep
+
+    dst_dir = os.path.normpath(args.dst_dir)
+    assert dst_dir.startswith(build_root)
+    makedirs(dst_dir)
+
+    src_dir = os.path.normpath(args.src_dir) + os.path.sep
+    assert src_dir.startswith(source_root)
+
+    if src_dir.startswith(source_root):
+        root = source_root
+        is_from_source_root = True
+    elif src_dir.startswith(build_root):
+        root = build_root
+        is_from_source_root = False
+    else:
+        assert False, 'src_dir [{}] should start with [{}] or [{}]'.format(src_dir, source_root, build_root)
+
+    is_overwrite_existing = args.existing == 'overwrite'
+
+    for f in [os.path.normpath(f) for f in args.files]:
+        src_file = os.path.join(src_dir, f)
+        dst_file = os.path.join(dst_dir, f)
+        if src_file == dst_file:
+            continue
+        rel_path = src_file[len(root):] if is_from_source_root else None
+        copy_file(src_file, dst_file, overwrite=is_overwrite_existing, orig_path=rel_path)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/copy_docs_files_to_dir.py b/build/scripts/copy_docs_files_to_dir.py
new file mode 100644
index 0000000000..bfd3c65698
--- /dev/null
+++ b/build/scripts/copy_docs_files_to_dir.py
@@ -0,0 +1,164 @@
+import argparse
+import codecs
+import errno
+import os
+import process_command_files as pcf
+import shutil
+import sys
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--bin-dir', nargs='*')
+    parser.add_argument('--build-root', required=True)
+    parser.add_argument('--dest-dir', required=True)
+    parser.add_argument('--docs-dir', action='append', nargs=2, dest='docs_dirs', default=None)
+    parser.add_argument('--existing', choices=('skip', 'overwrite'), default='overwrite')
+    parser.add_argument('--source-root', required=True)
+    parser.add_argument('--src-dir', action='append', nargs='*', dest='src_dirs', default=None)
+    parser.add_argument('files', nargs='*')
+    return parser.parse_args(pcf.get_args(sys.argv[1:]))
+
+
+def makedirs(dirname):
+    try:
+        os.makedirs(dirname)
+    except OSError as e:
+        if e.errno == errno.EEXIST and os.path.isdir(dirname):
+            pass
+        else:
+            raise
+
+
+def copy_file(src, dst, overwrite=False, orig_path=None):
+    if os.path.exists(dst) and not overwrite:
+        return
+
+    makedirs(os.path.dirname(dst))
+
+    with open(src, 'rb') as fsrc, open(dst, 'wb') as fdst:
+        if orig_path and src.endswith('.md'):
+            out = b''
+            buf = fsrc.readline()
+            bom_length = len(codecs.BOM_UTF8)
+            if buf[:bom_length] == codecs.BOM_UTF8:
+                out += codecs.BOM_UTF8
+                buf = buf[bom_length:]
+            info = 'vcsPath: {}\n'.format(orig_path)
+            if buf.startswith(b'---') and b'\n' in buf[3:] and buf[3:].rstrip(b'\r\n') == b'':
+                content = b''
+                found = False
+                while True:
+                    line = fsrc.readline()
+                    if len(line) == 0:
+                        break
+                    content += line
+                    if line.startswith(b'---') and line[3:].rstrip(b'\r\n') == b'':
+                        found = True
+                        break
+                out += buf
+                if found:
+                    out += info.encode('utf-8')
+                out += content
+            else:
+                out += '---\n{}---\n'.format(info).encode('utf-8')
+                out += buf
+            fdst.write(out)
+        shutil.copyfileobj(fsrc, fdst)
+
+
+def main():
+    args = parse_args()
+
+    dest_dir = os.path.normpath(args.dest_dir)
+    makedirs(dest_dir)
+
+    source_root = os.path.normpath(args.source_root) + os.path.sep
+    build_root = os.path.normpath(args.build_root) + os.path.sep
+
+    is_overwrite_existing = args.existing == 'overwrite'
+
+    if args.docs_dirs:
+        for item in args.docs_dirs:
+            assert len(item) == 2
+            docs_dir, nm = item[0], item[1]
+            assert not os.path.isabs(docs_dir)
+            if nm and nm != '.':
+                assert not os.path.isabs(nm)
+                dst = os.path.join(dest_dir, nm)
+            else:
+                dst = dest_dir
+
+            abs_docs_dir = os.path.join(args.source_root, docs_dir)
+
+            for root, _, files in os.walk(abs_docs_dir):
+                for f in files:
+                    if os.path.islink(os.path.join(root, f)):
+                        continue
+                    file_src = os.path.join(root, f)
+                    assert file_src.startswith(source_root)
+                    file_dst = os.path.join(dst, os.path.relpath(root, abs_docs_dir), f)
+                    copy_file(file_src, file_dst, overwrite=is_overwrite_existing, orig_path=file_src[len(source_root):])
+
+    if args.src_dirs:
+        for item in args.src_dirs:
+            assert len(item) > 1
+            src_dir, nm = os.path.normpath(item[0]), item[1]
+            assert os.path.isabs(src_dir)
+            if nm and nm != '.':
+                assert not os.path.isabs(nm)
+                dst = os.path.join(dest_dir, nm)
+            else:
+                dst = dest_dir
+
+            if src_dir.startswith(source_root):
+                root = source_root
+                is_from_source_root = True
+            else:
+                assert src_dir.startswith(build_root)
+                root = build_root
+                is_from_source_root = False
+
+            for f in item[2:]:
+                file_src = os.path.normpath(f)
+                assert file_src.startswith(root)
+                rel_path = file_src[len(root):] if is_from_source_root else None
+                file_dst = os.path.join(dst, file_src[len(src_dir):])
+                copy_file(file_src, file_dst, overwrite=is_overwrite_existing, orig_path=rel_path)
+
+    if args.bin_dir:
+        assert len(args.bin_dir) > 1
+        bin_dir, bin_dir_namespace = os.path.normpath(args.bin_dir[0]) + os.path.sep, args.bin_dir[1]
+        assert bin_dir.startswith(build_root)
+        if bin_dir_namespace and bin_dir_namespace != '.':
+            assert not os.path.isabs(bin_dir_namespace)
+            dst = os.path.join(dest_dir, bin_dir_namespace)
+        else:
+            dst = dest_dir
+
+        for file_src in args.bin_dir[2:]:
+            assert os.path.isfile(file_src)
+            assert file_src.startswith(bin_dir)
+            file_dst = os.path.join(dst, file_src[len(bin_dir):])
+            copy_file(file_src, file_dst, overwrite=is_overwrite_existing, orig_path=None)
+
+    for src in args.files:
+        file_src = os.path.normpath(src)
+        assert os.path.isfile(file_src), 'File [{}] does not exist...'.format(file_src)
+        rel_path = file_src
+        orig_path = None
+        if file_src.startswith(source_root):
+            rel_path = file_src[len(source_root):]
+            orig_path = rel_path
+        elif file_src.startswith(build_root):
+            rel_path = file_src[len(build_root):]
+        else:
+            raise Exception('Unexpected file path [{}].'.format(file_src))
+        assert not os.path.isabs(rel_path)
+        file_dst = os.path.join(args.dest_dir, rel_path)
+        if file_dst != file_src:
+            copy_file(file_src, file_dst, is_overwrite_existing, orig_path)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/copy_files_to_dir.py b/build/scripts/copy_files_to_dir.py
new file mode 100644
index 0000000000..ead57ba16e
--- /dev/null
+++ b/build/scripts/copy_files_to_dir.py
@@ -0,0 +1,59 @@
+import argparse
+import errno
+import os
+import process_command_files as pcf
+import shutil
+import sys
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--dest-dir', required=True)
+    parser.add_argument('--existing', choices=('skip', 'overwrite'), default='overwrite')
+    parser.add_argument('--flat', action='store_true')
+    parser.add_argument('--skip-prefix', dest='skip_prefixes', action='append', default=[])
+    parser.add_argument('files', nargs='*')
+    return parser.parse_args(pcf.get_args(sys.argv[1:]))
+
+
+def makedirs(dirname):
+    try:
+        os.makedirs(dirname)
+    except OSError as e:
+        if e.errno == errno.EEXIST and os.path.isdir(dirname):
+            pass
+        else:
+            raise
+
+
+def main():
+    args = parse_args()
+
+    dest_dir = os.path.normpath(args.dest_dir) + os.pathsep
+    makedirs(dest_dir)
+
+    prefixes = ['{}{}'.format(os.path.normpath(p), os.path.sep) for p in args.skip_prefixes]
+
+    for src in args.files:
+        src = os.path.normpath(src)
+        assert os.path.isfile(src)
+        if args.flat:
+            rel_dst = os.path.basename(src)
+        else:
+            rel_dst = src
+            for prefix in prefixes:
+                if src.startswith(prefix):
+                    rel_dst = src[len(prefix):]
+                    break
+        assert not os.path.isabs(rel_dst)
+        dst = os.path.join(args.dest_dir, rel_dst)
+        if os.path.isfile(dst) and args.existing == 'skip':
+            break
+
+        makedirs(os.path.dirname(dst))
+
+        shutil.copyfile(src, dst)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/copy_to_dir.py b/build/scripts/copy_to_dir.py
new file mode 100644
index 0000000000..9baeb5ffac
--- /dev/null
+++ b/build/scripts/copy_to_dir.py
@@ -0,0 +1,75 @@
+import errno
+import sys
+import os
+import shutil
+import optparse
+import tarfile
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.add_option('--build-root')
+    parser.add_option('--dest-dir')
+    parser.add_option('--dest-arch')
+    return parser.parse_args()
+
+
+def ensure_dir_exists(path):
+    try:
+        os.makedirs(path)
+    except OSError as e:
+        if e.errno == errno.EEXIST and os.path.isdir(path):
+            pass
+        else:
+            raise
+
+
+def hardlink_or_copy(src, dst):
+    if os.name == 'nt':
+        shutil.copy(src, dst)
+    else:
+        try:
+            os.link(src, dst)
+        except OSError as e:
+            if e.errno == errno.EEXIST:
+                return
+            elif e.errno == errno.EXDEV:
+                sys.stderr.write("Can't make cross-device hardlink - fallback to copy: {} -> {}\n".format(src, dst))
+                shutil.copy(src, dst)
+            else:
+                raise
+
+
+def main():
+    opts, args = parse_args()
+    assert opts.build_root
+    assert opts.dest_dir
+
+    dest_arch = None
+    if opts.dest_arch:
+        if opts.dest_arch.endswith('.tar'):
+            dest_arch = tarfile.open(opts.dest_arch, 'w', dereference=True)
+        elif opts.dest_arch.endswith('.tar.gz') or opts.dest_arch.endswith('.tgz'):
+            dest_arch = tarfile.open(opts.dest_arch, 'w:gz', dereference=True)
+        else:
+            # TODO: move check to graph generation stage
+            raise Exception('Unsopported archive type for {}. Use one of: tar, tar.gz, tgz.'.format(os.path.basename(opts.dest_arch)))
+
+    for arg in args:
+        dst = arg
+        if dst.startswith(opts.build_root):
+            dst = dst[len(opts.build_root) + 1:]
+
+        if dest_arch and not arg.endswith('.pkg.fake'):
+            dest_arch.add(arg, arcname=dst)
+
+        dst = os.path.join(opts.dest_dir, dst)
+        ensure_dir_exists(os.path.dirname(dst))
+        hardlink_or_copy(arg, dst)
+
+    if dest_arch:
+        dest_arch.close()
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/build/scripts/coverage-info.py b/build/scripts/coverage-info.py
new file mode 100644
index 0000000000..94491d9256
--- /dev/null
+++ b/build/scripts/coverage-info.py
@@ -0,0 +1,282 @@
+import argparse
+import os
+import sys
+import tarfile
+import collections
+import subprocess
+import re
+
+
+GCDA_EXT = '.gcda'
+GCNO_EXT = '.gcno'
+
+
+def suffixes(path):
+    """
+    >>> list(suffixes('/a/b/c'))
+    ['c', 'b/c', '/a/b/c']
+    >>> list(suffixes('/a/b/c/'))
+    ['c', 'b/c', '/a/b/c']
+    >>> list(suffixes('/a'))
+    ['/a']
+    >>> list(suffixes('/a/'))
+    ['/a']
+    >>> list(suffixes('/'))
+    []
+    """
+    path = os.path.normpath(path)
+
+    def up_dirs(cur_path):
+        while os.path.dirname(cur_path) != cur_path:
+            cur_path = os.path.dirname(cur_path)
+            yield cur_path
+
+    for x in up_dirs(path):
+        yield path.replace(x + os.path.sep, '')
+
+
+def recast(in_file, out_file, probe_path, update_stat):
+    PREFIX = 'SF:'
+
+    probed_path = None
+
+    any_payload = False
+
+    with open(in_file, 'r') as input, open(out_file, 'w') as output:
+        active = True
+        for line in input:
+            line = line.rstrip('\n')
+            if line.startswith('TN:'):
+                output.write(line + '\n')
+            elif line.startswith(PREFIX):
+                path = line[len(PREFIX):]
+                probed_path = probe_path(path)
+                if probed_path:
+                    output.write(PREFIX + probed_path + '\n')
+                active = bool(probed_path)
+            else:
+                if active:
+                    update_stat(probed_path, line)
+                    output.write(line + '\n')
+                    any_payload = True
+
+    return any_payload
+
+
+def print_stat(da, fnda, teamcity_stat_output):
+    lines_hit = sum(map(bool, da.values()))
+    lines_total = len(da.values())
+    lines_coverage = 100.0 * lines_hit / lines_total if lines_total else 0
+
+    func_hit = sum(map(bool, fnda.values()))
+    func_total = len(fnda.values())
+    func_coverage = 100.0 * func_hit / func_total if func_total else 0
+
+    print >>sys.stderr, '[[imp]]Lines[[rst]]     {: >16} {: >16} {: >16.1f}%'.format(lines_hit, lines_total, lines_coverage)
+    print >>sys.stderr, '[[imp]]Functions[[rst]] {: >16} {: >16} {: >16.1f}%'.format(func_hit, func_total, func_coverage)
+
+    if teamcity_stat_output:
+        with open(teamcity_stat_output, 'w') as tc_file:
+            tc_file.write("##teamcity[blockOpened name='Code Coverage Summary']\n")
+            tc_file.write("##teamcity[buildStatisticValue key=\'CodeCoverageAbsLTotal\' value='{}']\n".format(lines_total))
+            tc_file.write("##teamcity[buildStatisticValue key=\'CodeCoverageAbsLCovered\' value='{}']\n".format(lines_hit))
+            tc_file.write("##teamcity[buildStatisticValue key=\'CodeCoverageAbsMTotal\' value='{}']\n".format(func_total))
+            tc_file.write("##teamcity[buildStatisticValue key=\'CodeCoverageAbsMCovered\' value='{}']\n".format(func_hit))
+            tc_file.write("##teamcity[blockClosed name='Code Coverage Summary']\n")
+
+
+def chunks(l, n):
+    """
+    >>> list(chunks(range(10), 3))
+    [[0, 1, 2], [3, 4, 5], [6, 7, 8], [9]]
+    >>> list(chunks(range(10), 5))
+    [[0, 1, 2, 3, 4], [5, 6, 7, 8, 9]]
+    """
+    for i in xrange(0, len(l), n):
+        yield l[i:i + n]
+
+
+def combine_info_files(lcov, files, out_file):
+    chunk_size = 50
+    files = list(set(files))
+
+    for chunk in chunks(files, chunk_size):
+        combine_cmd = [lcov]
+        if os.path.exists(out_file):
+            chunk.append(out_file)
+        for trace in chunk:
+            assert os.path.exists(trace), "Trace file does not exist: {} (cwd={})".format(trace, os.getcwd())
+            combine_cmd += ["-a", os.path.abspath(trace)]
+        print >>sys.stderr, '## lcov', ' '.join(combine_cmd[1:])
+        out_file_tmp = "combined.tmp"
+        with open(out_file_tmp, "w") as stdout:
+            subprocess.check_call(combine_cmd, stdout=stdout)
+        if os.path.exists(out_file):
+            os.remove(out_file)
+        os.rename(out_file_tmp, out_file)
+
+
+def probe_path_global(path, source_root, prefix_filter, exclude_files):
+    if path.endswith('_ut.cpp'):
+        return None
+
+    for suff in reversed(list(suffixes(path))):
+        if (not prefix_filter or suff.startswith(prefix_filter)) and (not exclude_files or not exclude_files.match(suff)):
+            full_path = source_root + os.sep + suff
+            if os.path.isfile(full_path):
+                return full_path
+
+    return None
+
+
+def update_stat_global(src_file, line, fnda, da):
+    if line.startswith("FNDA:"):
+        visits, func_name = line[len("FNDA:"):].split(',')
+        fnda[src_file + func_name] += int(visits)
+
+    if line.startswith("DA"):
+        line_number, visits = line[len("DA:"):].split(',')
+        if visits == '=====':
+            visits = 0
+
+        da[src_file + line_number] += int(visits)
+
+
+def gen_info_global(cmd, cov_info, probe_path, update_stat, lcov_args):
+    print >>sys.stderr, '## geninfo', ' '.join(cmd)
+    subprocess.check_call(cmd)
+    if recast(cov_info + '.tmp', cov_info, probe_path, update_stat):
+        lcov_args.append(cov_info)
+
+
+def init_all_coverage_files(gcno_archive, fname2gcno, fname2info, geninfo_executable, gcov_tool, gen_info, prefix_filter, exclude_files):
+    with tarfile.open(gcno_archive) as gcno_tf:
+        for gcno_item in gcno_tf:
+            if gcno_item.isfile() and gcno_item.name.endswith(GCNO_EXT):
+                gcno_tf.extract(gcno_item)
+
+                gcno_name = gcno_item.name
+                source_fname = gcno_name[:-len(GCNO_EXT)]
+                if prefix_filter and not source_fname.startswith(prefix_filter):
+                    sys.stderr.write("Skipping {} (doesn't match prefix '{}')\n".format(source_fname, prefix_filter))
+                    continue
+                if exclude_files and exclude_files.search(source_fname):
+                    sys.stderr.write("Skipping {} (matched exclude pattern '{}')\n".format(source_fname, exclude_files.pattern))
+                    continue
+
+                fname2gcno[source_fname] = gcno_name
+
+                if os.path.getsize(gcno_name) > 0:
+                    coverage_info = source_fname + '.' + str(len(fname2info[source_fname])) + '.info'
+                    fname2info[source_fname].append(coverage_info)
+                    geninfo_cmd = [
+                        geninfo_executable,
+                        '--gcov-tool', gcov_tool,
+                        '-i', gcno_name,
+                        '-o', coverage_info + '.tmp'
+                    ]
+                    gen_info(geninfo_cmd, coverage_info)
+
+
+def process_all_coverage_files(gcda_archive, fname2gcno, fname2info, geninfo_executable, gcov_tool, gen_info):
+    with tarfile.open(gcda_archive) as gcda_tf:
+        for gcda_item in gcda_tf:
+            if gcda_item.isfile() and gcda_item.name.endswith(GCDA_EXT):
+                gcda_name = gcda_item.name
+                source_fname = gcda_name[:-len(GCDA_EXT)]
+                for suff in suffixes(source_fname):
+                    if suff in fname2gcno:
+                        gcda_new_name = suff + GCDA_EXT
+                        gcda_item.name = gcda_new_name
+                        gcda_tf.extract(gcda_item)
+                        if os.path.getsize(gcda_new_name) > 0:
+                            coverage_info = suff + '.' + str(len(fname2info[suff])) + '.info'
+                            fname2info[suff].append(coverage_info)
+                            geninfo_cmd = [
+                                geninfo_executable,
+                                '--gcov-tool', gcov_tool,
+                                gcda_new_name,
+                                '-o', coverage_info + '.tmp'
+                            ]
+                            gen_info(geninfo_cmd, coverage_info)
+
+
+def gen_cobertura(tool, output, combined_info):
+    cmd = [
+        tool,
+        combined_info,
+        '-b', '#hamster#',
+        '-o', output
+    ]
+    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    if p.returncode:
+        raise Exception('lcov_cobertura failed with exit code {}\nstdout: {}\nstderr: {}'.format(p.returncode, out, err))
+
+
+def main(source_root, output, gcno_archive, gcda_archive, gcov_tool, prefix_filter, exclude_regexp, teamcity_stat_output, coverage_report_path, gcov_report, lcov_cobertura):
+    exclude_files = re.compile(exclude_regexp) if exclude_regexp else None
+
+    fname2gcno = {}
+    fname2info = collections.defaultdict(list)
+    lcov_args = []
+    geninfo_executable = os.path.join(source_root, 'devtools', 'lcov', 'geninfo')
+
+    def probe_path(path):
+        return probe_path_global(path, source_root, prefix_filter, exclude_files)
+
+    fnda = collections.defaultdict(int)
+    da = collections.defaultdict(int)
+
+    def update_stat(src_file, line):
+        update_stat_global(src_file, line, da, fnda)
+
+    def gen_info(cmd, cov_info):
+        gen_info_global(cmd, cov_info, probe_path, update_stat, lcov_args)
+
+    init_all_coverage_files(gcno_archive, fname2gcno, fname2info, geninfo_executable, gcov_tool, gen_info, prefix_filter, exclude_files)
+    process_all_coverage_files(gcda_archive, fname2gcno, fname2info, geninfo_executable, gcov_tool, gen_info)
+
+    if coverage_report_path:
+        output_dir = coverage_report_path
+    else:
+        output_dir = output + '.dir'
+
+    if not os.path.exists(output_dir):
+        os.makedirs(output_dir)
+
+    teamcity_stat_file = None
+    if teamcity_stat_output:
+        teamcity_stat_file = os.path.join(output_dir, 'teamcity.out')
+    print_stat(da, fnda, teamcity_stat_file)
+
+    if lcov_args:
+        output_trace = "combined.info"
+        combine_info_files(os.path.join(source_root, 'devtools', 'lcov', 'lcov'), lcov_args, output_trace)
+        cmd = [os.path.join(source_root, 'devtools', 'lcov', 'genhtml'), '-p', source_root, '--ignore-errors', 'source', '-o', output_dir, output_trace]
+        print >>sys.stderr, '## genhtml', ' '.join(cmd)
+        subprocess.check_call(cmd)
+        if lcov_cobertura:
+            gen_cobertura(lcov_cobertura, gcov_report, output_trace)
+
+    with tarfile.open(output, 'w') as tar:
+        tar.add(output_dir, arcname='.')
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('--source-root', action='store')
+    parser.add_argument('--output', action='store')
+    parser.add_argument('--gcno-archive', action='store')
+    parser.add_argument('--gcda-archive', action='store')
+    parser.add_argument('--gcov-tool', action='store')
+    parser.add_argument('--prefix-filter', action='store')
+    parser.add_argument('--exclude-regexp', action='store')
+    parser.add_argument('--teamcity-stat-output', action='store_const', const=True)
+    parser.add_argument('--coverage-report-path', action='store')
+    parser.add_argument('--gcov-report', action='store')
+    parser.add_argument('--lcov-cobertura', action='store')
+
+    args = parser.parse_args()
+    main(**vars(args))
diff --git a/build/scripts/cpp_flatc_wrapper.py b/build/scripts/cpp_flatc_wrapper.py
new file mode 100644
index 0000000000..9f74b65570
--- /dev/null
+++ b/build/scripts/cpp_flatc_wrapper.py
@@ -0,0 +1,30 @@
+import os
+import subprocess
+import sys
+
+
+def main():
+    cmd = sys.argv[1:]
+    h_file = None
+    try:
+        index = cmd.index('-o')
+        h_file = cmd[index+1]
+        cmd[index+1] = os.path.dirname(h_file)
+    except (ValueError, IndexError):
+        pass
+    p = subprocess.run(cmd, capture_output=True, text=True)
+    if p.returncode:
+        if p.stdout:
+            sys.stderr.write('stdout:\n{}\n'.format(p.stdout))
+        if p.stderr:
+            sys.stderr.write('stderr:\n{}\n'.format(p.stderr))
+        sys.exit(p.returncode)
+    if h_file and h_file.endswith(('.fbs.h', '.fbs64.h')):
+        cpp_file = '{}.cpp'.format(h_file[:-2])
+        with open(cpp_file, 'w') as f:
+            f.write('#include "{}"\n'.format(os.path.basename(h_file)))
+    sys.exit(0)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/create_jcoverage_report.py b/build/scripts/create_jcoverage_report.py
new file mode 100644
index 0000000000..45083ff4f7
--- /dev/null
+++ b/build/scripts/create_jcoverage_report.py
@@ -0,0 +1,112 @@
+import argparse
+import tarfile
+import zipfile
+import os
+import sys
+import time
+import subprocess
+
+
+def mkdir_p(path):
+    try:
+        os.makedirs(path)
+    except OSError:
+        pass
+
+
+class Timer(object):
+
+    def __init__(self):
+        self.start = time.time()
+
+    def step(self, msg):
+        sys.stderr.write("{} ({}s)\n".format(msg, int(time.time() - self.start)))
+        self.start = time.time()
+
+
+def main(source, output, java, prefix_filter, exclude_filter, jars_list, output_format, tar_output, agent_disposition, runners_paths):
+    timer = Timer()
+    reports_dir = 'jacoco_reports_dir'
+    mkdir_p(reports_dir)
+    with tarfile.open(source) as tf:
+        tf.extractall(reports_dir)
+    timer.step("Coverage data extracted")
+    reports = [os.path.join(reports_dir, fname) for fname in os.listdir(reports_dir)]
+
+    with open(jars_list) as f:
+        jars = f.read().strip().split()
+    if jars and runners_paths:
+        for r in runners_paths:
+            try:
+                jars.remove(r)
+            except ValueError:
+                pass
+
+    src_dir = 'sources_dir'
+    cls_dir = 'classes_dir'
+
+    mkdir_p(src_dir)
+    mkdir_p(cls_dir)
+
+    for jar in jars:
+        if jar.endswith('devtools-jacoco-agent.jar'):
+            agent_disposition = jar
+
+        # Skip java contrib - it's irrelevant coverage
+        if jar.startswith('contrib/java'):
+            continue
+
+        with zipfile.ZipFile(jar) as jf:
+            for entry in jf.infolist():
+                if entry.filename.endswith('.java'):
+                    dest = src_dir
+
+                elif entry.filename.endswith('.class'):
+                    dest = cls_dir
+
+                else:
+                    continue
+
+                entry.filename = entry.filename.encode('utf-8')
+                jf.extract(entry, dest)
+    timer.step("Jar files extracted")
+
+    if not agent_disposition:
+        print>>sys.stderr, 'Can\'t find jacoco agent. Will not generate html report for java coverage.'
+
+    if tar_output:
+        report_dir = 'java.report.temp'
+    else:
+        report_dir = output
+    mkdir_p(report_dir)
+
+    if agent_disposition:
+        agent_cmd = [java, '-jar', agent_disposition, src_dir, cls_dir, prefix_filter or '.', exclude_filter or '__no_exclude__', report_dir, output_format]
+        agent_cmd += reports
+        subprocess.check_call(agent_cmd)
+        timer.step("Jacoco finished")
+
+    if tar_output:
+        with tarfile.open(output, 'w') as outf:
+            outf.add(report_dir, arcname='.')
+
+
+if __name__ == '__main__':
+    if 'LC_ALL' in os.environ:
+        if os.environ['LC_ALL'] == 'C':
+            os.environ['LC_ALL'] = 'en_GB.UTF-8'
+
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('--source', action='store')
+    parser.add_argument('--output', action='store')
+    parser.add_argument('--java', action='store')
+    parser.add_argument('--prefix-filter', action='store')
+    parser.add_argument('--exclude-filter', action='store')
+    parser.add_argument('--jars-list', action='store')
+    parser.add_argument('--output-format', action='store', default="html")
+    parser.add_argument('--raw-output', dest='tar_output', action='store_false', default=True)
+    parser.add_argument('--agent-disposition', action='store')
+    parser.add_argument('--runner-path', dest='runners_paths', action='append', default=[])
+    args = parser.parse_args()
+    main(**vars(args))
diff --git a/build/scripts/custom_link_green_mysql.py b/build/scripts/custom_link_green_mysql.py
new file mode 100644
index 0000000000..13bb9e4ac7
--- /dev/null
+++ b/build/scripts/custom_link_green_mysql.py
@@ -0,0 +1,97 @@
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+
+
+SYMBOLS_TO_PATCH = (
+    'connect',
+    'poll',
+    'recv',
+    'recvfrom',
+    'send',
+    'sendto',
+)
+
+class Error(Exception):
+    pass
+
+
+def find_compiler(args):
+    for arg in args:
+        if os.path.basename(arg) in ('clang', 'clang++'):
+            return arg
+    raise Error('No known compiler found in the command line')
+
+
+def find_libraries(project, args):
+    if not project.endswith('/'):
+        project = project + '/'
+
+    for arg in args:
+        if arg.startswith(project):
+            yield arg
+
+
+def rename_symbol(symbol):
+    return 'green_{}'.format(symbol)
+
+
+def patch_object(object_path, objcopy):
+    args = [objcopy]
+    for symbol in SYMBOLS_TO_PATCH:
+        args.extend(('--redefine-sym', '{}={}'.format(symbol, rename_symbol(symbol))))
+    args.append(object_path)
+    subprocess.check_call(args)
+
+
+def patch_library(library_path, ar, objcopy):
+    tmpdir = tempfile.mkdtemp(dir=os.path.dirname(library_path))
+    try:
+        subprocess.check_call((ar, 'x', library_path), cwd=tmpdir)
+        names = os.listdir(tmpdir)
+        for name in names:
+            patch_object(os.path.join(tmpdir, name), objcopy=objcopy)
+
+        new_library_path = os.path.join(tmpdir, 'library.a')
+        subprocess.check_call([ar, 'rcs', new_library_path] + names, cwd=tmpdir)
+
+        os.rename(new_library_path, library_path)
+
+    finally:
+        shutil.rmtree(tmpdir)
+
+
+def main():
+    try:
+        args = sys.argv[1:]
+        compiler = find_compiler(args)
+        compiler_dir = os.path.dirname(compiler)
+
+        def get_tool(name):
+            path = os.path.join(compiler_dir, name)
+            if not os.path.exists(path):
+                raise Error('No {} found alongside the compiler'.format(name))
+            return path
+
+        ar = get_tool('llvm-ar')
+        objcopy = get_tool('llvm-objcopy')
+
+        libraries = tuple(find_libraries('contrib/libs/libmysql_r', args))
+        for library in libraries:
+            library_path = os.path.abspath(library)
+            if not os.path.exists(library_path):
+                raise Error('No {} file exists'.format(library))
+
+            patch_library(library_path, ar=ar, objcopy=objcopy)
+
+    except Exception as error:
+        name = os.path.basename(sys.argv[0])
+        command = ' '.join(args)
+        message = '{name} failed: {error}\nCommand line: {command}'
+        print >> sys.stderr, message.format(**locals())
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/decimal_md5.py b/build/scripts/decimal_md5.py
new file mode 100644
index 0000000000..e70ca80a09
--- /dev/null
+++ b/build/scripts/decimal_md5.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import hashlib
+import struct
+import sys
+import os
+import argparse
+
+
+def print_code(checksum, func_name):
+    if len(func_name) == 0: # safe fallback for old ya.make files
+        func_name = "DecimalMD5"
+    print 'const char* ' + func_name + '() {return "' + checksum + '";}'
+
+
+def ensure_paths_exist(paths):
+    bad_paths = sorted(
+        path for path in paths
+        if not os.path.exists(path)
+    )
+    if bad_paths:
+        print >> sys.stderr, "decimal_md5 inputs do not exist:"
+        for path in bad_paths:
+            print >> sys.stderr, path
+        sys.exit(1)
+
+
+def _update_digest_with_file_contents(digest, path, block_size=65535):
+    with open(path) as f:
+        while True:
+            block = f.read(block_size)
+            if not block:
+                break
+            digest.update(block)
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--fixed-output", help="don not calculate md5, use this value instead")
+    parser.add_argument("--lower-bits", help="use specified count of lower bits", type=int, default=32)
+    parser.add_argument("--source-root", help="arcadia source root")
+    parser.add_argument("--func-name", help="custom function name to be defined", default="DecimalMD5")
+    parser.add_argument("targets", nargs='*', default=['.'])
+
+    args = parser.parse_args()
+
+    abs_paths = [
+        os.path.join(args.source_root, target)
+        for target in args.targets
+    ]
+    ensure_paths_exist(abs_paths)
+
+    if args.fixed_output:
+        try:
+            bitmask = (1 << args.lower_bits) - 1
+            fmt = '{:0%dd}' % len(str(bitmask))
+            checksum = fmt.format(int(args.fixed_output) & bitmask)
+        except ValueError:
+            raise ValueError("decimal_md5: bad value passed via --fixed-output: %s" % args.fixed_output)
+        print_code(str(checksum), func_name=args.func_name)
+        return
+
+    md5 = hashlib.md5()
+    for path in abs_paths:
+        _update_digest_with_file_contents(md5, path)
+
+    md5_parts = struct.unpack('IIII', md5.digest())
+    md5_int = sum(part << (32 * n) for n, part in enumerate(md5_parts))
+    bitmask = (1 << args.lower_bits) - 1
+    fmt = '{:0%dd}' % len(str(bitmask))
+
+    checksum_str = fmt.format(md5_int & bitmask)
+    print_code(checksum_str, func_name=args.func_name)
+
+
+if __name__ == "__main__":
+    main()
+
diff --git a/build/scripts/error.py b/build/scripts/error.py
new file mode 100644
index 0000000000..f7d8ecb2cc
--- /dev/null
+++ b/build/scripts/error.py
@@ -0,0 +1,77 @@
+# Sync content of this file with devtools/ya/core/error/__init__.py
+
+TEMPORARY_ERROR_MESSAGES = [
+    'Connection reset by peer',
+    'Connection timed out',
+    'Function not implemented',
+    'I/O operation on closed file',
+    'Internal Server Error',
+    'Network connection closed unexpectedly',
+    'Network is unreachable',
+    'No route to host',
+    'No space left on device',
+    'Not enough space',
+    'Temporary failure in name resolution',
+    'The read operation timed out',
+    'timeout: timed out',
+]
+
+
+# Node exit codes
+class ExitCodes(object):
+    TEST_FAILED = 10
+    COMPILATION_FAILED = 11
+    INFRASTRUCTURE_ERROR = 12
+    NOT_RETRIABLE_ERROR = 13
+    YT_STORE_FETCH_ERROR = 14
+
+
+def merge_exit_codes(exit_codes):
+    return max(e if e >= 0 else 1 for e in exit_codes) if exit_codes else 0
+
+
+def is_temporary_error(exc):
+    import logging
+    logger = logging.getLogger(__name__)
+
+    if getattr(exc, 'temporary', False):
+        logger.debug("Exception has temporary attribute: %s", exc)
+        return True
+
+    import errno
+    err = getattr(exc, 'errno', None)
+
+    if err == errno.ECONNREFUSED or err == errno.ENETUNREACH:
+        logger.debug("Exception has errno attribute: %s (errno=%s)", exc, err)
+        return True
+
+    import socket
+
+    if isinstance(exc, socket.timeout) or isinstance(getattr(exc, 'reason', None), socket.timeout):
+        logger.debug("Socket timeout exception: %s", exc)
+        return True
+
+    if isinstance(exc, socket.gaierror):
+        logger.debug("Getaddrinfo exception: %s", exc)
+        return True
+
+    import urllib2
+
+    if isinstance(exc, urllib2.HTTPError) and exc.code in (429, ):
+        logger.debug("urllib2.HTTPError: %s", exc)
+        return True
+
+    import httplib
+
+    if isinstance(exc, httplib.IncompleteRead):
+        logger.debug("IncompleteRead exception: %s", exc)
+        return True
+
+    exc_str = str(exc)
+
+    for message in TEMPORARY_ERROR_MESSAGES:
+        if message in exc_str:
+            logger.debug("Found temporary error pattern (%s): %s", message, exc_str)
+            return True
+
+    return False
diff --git a/build/scripts/extract_asrc.py b/build/scripts/extract_asrc.py
new file mode 100644
index 0000000000..89892ddf2d
--- /dev/null
+++ b/build/scripts/extract_asrc.py
@@ -0,0 +1,23 @@
+import argparse
+import os
+import tarfile
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--input', nargs='*', required=True)
+    parser.add_argument('--output', required=True)
+
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+
+    for asrc in filter(lambda x: x.endswith('.asrc') and os.path.exists(x), args.input):
+        with tarfile.open(asrc, 'r') as tar:
+            tar.extractall(path=args.output)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/extract_docs.py b/build/scripts/extract_docs.py
new file mode 100644
index 0000000000..20e8311346
--- /dev/null
+++ b/build/scripts/extract_docs.py
@@ -0,0 +1,43 @@
+import argparse
+import os
+import process_command_files as pcf
+import tarfile
+import sys
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--dest-dir', required=True)
+    parser.add_argument('--skip-prefix', dest='skip_prefixes', action='append', default=[])
+    parser.add_argument('docs', nargs='*')
+    return parser.parse_args(pcf.get_args(sys.argv[1:]))
+
+
+def main():
+    args = parse_args()
+
+    prefixes = ['{}{}'.format(os.path.normpath(p), os.path.sep) for p in args.skip_prefixes]
+
+    def _valid_docslib(path):
+        base = os.path.basename(path)
+        return base.endswith(('.docslib', '.docslib.fake')) or base == 'preprocessed.tar.gz'
+
+    for src in [p for p in args.docs if _valid_docslib(p)]:
+        if src == 'preprocessed.tar.gz':
+            rel_dst = os.path.dirname(os.path.normpath(src))
+            for prefix in prefixes:
+                if src.startswith(prefix):
+                    rel_dst = rel_dst[len(prefix):]
+                    continue
+            assert not os.path.isabs(rel_dst)
+            dest_dir = os.path.join(args.dest_dir, rel_dst)
+        else:
+            dest_dir = args.dest_dir
+        if not os.path.exists(dest_dir):
+            os.makedirs(dest_dir)
+        with tarfile.open(src, 'r') as tar_file:
+            tar_file.extractall(dest_dir)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/extract_jacoco_report.py b/build/scripts/extract_jacoco_report.py
new file mode 100644
index 0000000000..02e4ba9f13
--- /dev/null
+++ b/build/scripts/extract_jacoco_report.py
@@ -0,0 +1,29 @@
+import argparse
+import os
+import re
+import tarfile
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('--archive', action='store')
+    parser.add_argument('--source-re', action='store')
+    parser.add_argument('--destination', action='store')
+
+    args = parser.parse_args()
+
+    with tarfile.open(args.archive) as tf:
+        open(args.destination, 'wb').close()
+        extract_list = []
+        matcher = re.compile(args.source_re)
+        temp_dir = os.path.join(os.path.dirname(args.destination), 'temp_profiles')
+        if not os.path.exists(temp_dir):
+            os.makedirs(temp_dir)
+        for f in [i for i in tf if matcher.match(i.name)]:
+            tf.extract(f, path=temp_dir)
+        for directory, _, srcs in os.walk(temp_dir):
+            for f in srcs:
+                with open(args.destination, 'ab') as dst:
+                    with open(os.path.join(temp_dir, directory, f), 'rb') as src:
+                        dst.write(src.read())
diff --git a/build/scripts/f2c.py b/build/scripts/f2c.py
new file mode 100644
index 0000000000..7021e1391f
--- /dev/null
+++ b/build/scripts/f2c.py
@@ -0,0 +1,58 @@
+import sys
+import subprocess
+import argparse
+import os
+
+
+header = '''\
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#pragma GCC diagnostic ignored "-Wmissing-braces"
+#pragma GCC diagnostic ignored "-Wuninitialized"
+#pragma GCC diagnostic ignored "-Wreturn-type"
+#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+'''
+
+footer = '''
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
+'''
+
+
+def mkdir_p(directory):
+    if not os.path.exists(directory):
+        os.makedirs(directory)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('-t', '--tool')
+    parser.add_argument('-c', '--input')
+    parser.add_argument('-o', '--output')
+
+    args = parser.parse_args()
+    tmpdir = args.output + '.f2c'
+    mkdir_p(tmpdir)
+    # should parse includes, really
+    p = subprocess.Popen(
+        [args.tool, '-w', '-R', '-a', '-I' + os.path.dirname(args.input), '-T' + tmpdir],
+        stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
+    stdout, stderr = p.communicate(input=open(args.input).read())
+    ret = p.wait()
+
+    if ret:
+        print >>sys.stderr, 'f2c failed: %s, %s' % (stderr, ret)
+        sys.exit(ret)
+
+    if 'Error' in stderr:
+        print >>sys.stderr, stderr
+
+    with open(args.output, 'w') as f:
+        f.write(header)
+        f.write(stdout)
+        f.write(footer)
diff --git a/build/scripts/fail_module_cmd.py b/build/scripts/fail_module_cmd.py
new file mode 100644
index 0000000000..fa14c0d851
--- /dev/null
+++ b/build/scripts/fail_module_cmd.py
@@ -0,0 +1,7 @@
+import sys
+
+
+if __name__ == '__main__':
+    assert len(sys.argv) == 2, 'Unexpected number of arguments...'
+    sys.stderr.write('Error: module command for target [[bad]]{}[[rst]] was not executed due to build graph configuration errors...\n'.format(sys.argv[1]))
+    sys.exit(1)
diff --git a/build/scripts/fetch_from.py b/build/scripts/fetch_from.py
new file mode 100755
index 0000000000..b6ea7cefa1
--- /dev/null
+++ b/build/scripts/fetch_from.py
@@ -0,0 +1,396 @@
+import datetime as dt
+import errno
+import hashlib
+import json
+import logging
+import os
+import platform
+import random
+import shutil
+import socket
+import string
+import sys
+import tarfile
+import urllib2
+
+import retry
+
+
+def make_user_agent():
+    return 'fetch_from: {host}'.format(host=socket.gethostname())
+
+
+def add_common_arguments(parser):
+    parser.add_argument('--copy-to')  # used by jbuild in fetch_resource
+    parser.add_argument('--rename-to')  # used by test_node in inject_mds_resource_to_graph
+    parser.add_argument('--copy-to-dir')
+    parser.add_argument('--untar-to')
+    parser.add_argument('--rename', action='append', default=[], metavar='FILE', help='rename FILE to the corresponding output')
+    parser.add_argument('--executable', action='store_true', help='make outputs executable')
+    parser.add_argument('--log-path')
+    parser.add_argument('-v', '--verbose', action='store_true', default=os.environ.get('YA_VERBOSE_FETCHER'), help='increase stderr verbosity')
+    parser.add_argument('outputs', nargs='*', default=[])
+
+
+def ensure_dir(path):
+    if not (path == '' or os.path.isdir(path)):
+        os.makedirs(path)
+
+
+# Reference code: library/python/fs/__init__.py
+def hardlink_or_copy(src, dst):
+    ensure_dir(os.path.dirname(dst))
+
+    if os.name == 'nt':
+        shutil.copy(src, dst)
+    else:
+        try:
+            os.link(src, dst)
+        except OSError as e:
+            if e.errno == errno.EEXIST:
+                return
+            elif e.errno in (errno.EXDEV, errno.EMLINK, errno.EINVAL, errno.EACCES):
+                sys.stderr.write("Can't make hardlink (errno={}) - fallback to copy: {} -> {}\n".format(e.errno, src, dst))
+                shutil.copy(src, dst)
+            else:
+                sys.stderr.write("src: {} dst: {}\n".format(src, dst))
+                raise
+
+
+def rename_or_copy_and_remove(src, dst):
+    ensure_dir(os.path.dirname(dst))
+
+    try:
+        os.rename(src, dst)
+    except OSError:
+        shutil.copy(src, dst)
+        os.remove(src)
+
+
+class BadChecksumFetchError(Exception):
+    pass
+
+
+class IncompleteFetchError(Exception):
+    pass
+
+
+class ResourceUnpackingError(Exception):
+    pass
+
+
+class ResourceIsDirectoryError(Exception):
+    pass
+
+
+class OutputIsDirectoryError(Exception):
+    pass
+
+
+class OutputNotExistError(Exception):
+    pass
+
+
+def setup_logging(args, base_name):
+    def makedirs(path):
+        try:
+            os.makedirs(path)
+        except OSError:
+            pass
+
+    if args.log_path:
+        log_file_name = args.log_path
+    else:
+        log_file_name = base_name + ".log"
+
+    args.abs_log_path = os.path.abspath(log_file_name)
+    makedirs(os.path.dirname(args.abs_log_path))
+    logging.basicConfig(filename=args.abs_log_path, level=logging.DEBUG)
+    if args.verbose:
+        logging.getLogger().addHandler(logging.StreamHandler(sys.stderr))
+
+
+def is_temporary(e):
+
+    def is_broken(e):
+        return isinstance(e, urllib2.HTTPError) and e.code in (410, 404)
+
+    if is_broken(e):
+        return False
+
+    if isinstance(e, (BadChecksumFetchError, IncompleteFetchError, urllib2.URLError, socket.error)):
+        return True
+
+    import error
+
+    return error.is_temporary_error(e)
+
+
+def uniq_string_generator(size=6, chars=string.ascii_lowercase + string.digits):
+    return ''.join(random.choice(chars) for _ in range(size))
+
+
+def report_to_snowden(value):
+    def inner():
+        body = {
+            'namespace': 'ygg',
+            'key': 'fetch-from-sandbox',
+            'value': json.dumps(value),
+        }
+
+        urllib2.urlopen(
+            'https://back-snowden.qloud.yandex-team.ru/report/add',
+            json.dumps([body, ]),
+            timeout=5,
+        )
+
+    try:
+        inner()
+    except Exception as e:
+        logging.warning('report_to_snowden failed: %s', e)
+
+
+def copy_stream(read, *writers, **kwargs):
+    chunk_size = kwargs.get('size', 1024*1024)
+    while True:
+        data = read(chunk_size)
+        if not data:
+            break
+        for write in writers:
+            write(data)
+
+
+def md5file(fname):
+    res = hashlib.md5()
+    with open(fname, 'rb') as f:
+        copy_stream(f.read, res.update)
+    return res.hexdigest()
+
+
+def git_like_hash_with_size(filepath):
+    """
+    Calculate git like hash for path
+    """
+    sha = hashlib.sha1()
+
+    file_size = 0
+
+    with open(filepath, 'rb') as f:
+        while True:
+            block = f.read(2 ** 16)
+
+            if not block:
+                break
+
+            file_size += len(block)
+            sha.update(block)
+
+    sha.update('\0')
+    sha.update(str(file_size))
+
+    return sha.hexdigest(), file_size
+
+
+def size_printer(display_name, size):
+    sz = [0]
+    last_stamp = [dt.datetime.now()]
+
+    def printer(chunk):
+        sz[0] += len(chunk)
+        now = dt.datetime.now()
+        if last_stamp[0] + dt.timedelta(seconds=10) < now:
+            if size:
+                print >>sys.stderr, "##status##{} - [[imp]]{:.1f}%[[rst]]".format(display_name, 100.0 * sz[0] / size if size else 0)
+            last_stamp[0] = now
+
+    return printer
+
+
+def fetch_url(url, unpack, resource_file_name, expected_md5=None, expected_sha1=None, tries=10, writers=None):
+    logging.info('Downloading from url %s name %s and expected md5 %s', url, resource_file_name, expected_md5)
+    tmp_file_name = uniq_string_generator()
+
+    request = urllib2.Request(url, headers={'User-Agent': make_user_agent()})
+    req = retry.retry_func(lambda: urllib2.urlopen(request, timeout=30), tries=tries, delay=5, backoff=1.57079)
+    logging.debug('Headers: %s', req.headers.headers)
+    expected_file_size = int(req.headers.get('Content-Length', 0))
+    real_md5 = hashlib.md5()
+    real_sha1 = hashlib.sha1()
+
+    with open(tmp_file_name, 'wb') as fp:
+        copy_stream(
+            req.read,
+            fp.write,
+            real_md5.update,
+            real_sha1.update,
+            size_printer(resource_file_name, expected_file_size),
+            *([] if writers is None else writers)
+        )
+
+    real_md5 = real_md5.hexdigest()
+    real_file_size = os.path.getsize(tmp_file_name)
+    real_sha1.update('\0')
+    real_sha1.update(str(real_file_size))
+    real_sha1 = real_sha1.hexdigest()
+
+    if unpack:
+        tmp_dir = tmp_file_name + '.dir'
+        os.makedirs(tmp_dir)
+        with tarfile.open(tmp_file_name, mode="r|gz") as tar:
+            tar.extractall(tmp_dir)
+        tmp_file_name = os.path.join(tmp_dir, resource_file_name)
+        if expected_md5:
+            real_md5 = md5file(tmp_file_name)
+
+    logging.info('File size %s (expected %s)', real_file_size, expected_file_size or "UNKNOWN")
+    logging.info('File md5 %s (expected %s)', real_md5, expected_md5)
+    logging.info('File sha1 %s (expected %s)', real_sha1, expected_sha1)
+
+    if expected_md5 and real_md5 != expected_md5:
+        report_to_snowden(
+            {
+                'headers': req.headers.headers,
+                'expected_md5': expected_md5,
+                'real_md5': real_md5
+            }
+        )
+
+        raise BadChecksumFetchError(
+            'Downloaded {}, but expected {} for {}'.format(
+                real_md5,
+                expected_md5,
+                url,
+            )
+        )
+
+    if expected_sha1 and real_sha1 != expected_sha1:
+        report_to_snowden(
+            {
+                'headers': req.headers.headers,
+                'expected_sha1': expected_sha1,
+                'real_sha1': real_sha1
+            }
+        )
+
+        raise BadChecksumFetchError(
+            'Downloaded {}, but expected {} for {}'.format(
+                real_sha1,
+                expected_sha1,
+                url,
+            )
+        )
+
+    if expected_file_size and expected_file_size != real_file_size:
+        report_to_snowden({'headers': req.headers.headers, 'file_size': real_file_size})
+
+        raise IncompleteFetchError(
+            'Downloaded {}, but expected {} for {}'.format(
+                real_file_size,
+                expected_file_size,
+                url,
+            )
+        )
+
+    return tmp_file_name
+
+
+def chmod(filename, mode):
+    if platform.system().lower() == 'windows':
+        # https://docs.microsoft.com/en-us/windows/win32/fileio/hard-links-and-junctions:
+        # hard to reset read-only attribute for removal if there are multiple hardlinks
+        return
+    stat = os.stat(filename)
+    if stat.st_mode & 0o777 != mode:
+        try:
+            os.chmod(filename, mode)
+        except OSError:
+            import pwd
+            sys.stderr.write("{} st_mode: {} pwuid: {}\n".format(filename, stat.st_mode, pwd.getpwuid(os.stat(filename).st_uid)))
+            raise
+
+
+def process(fetched_file, file_name, args, remove=True):
+    assert len(args.rename) <= len(args.outputs), (
+        'too few outputs to rename', args.rename, 'into', args.outputs)
+
+    fetched_file_is_dir = os.path.isdir(fetched_file)
+    if fetched_file_is_dir and not args.untar_to:
+        raise ResourceIsDirectoryError('Resource may be directory only with untar_to option: ' + fetched_file)
+
+    # make all read only
+    if fetched_file_is_dir:
+        for root, _, files in os.walk(fetched_file):
+            for filename in files:
+                chmod(os.path.join(root, filename), 0o444)
+    else:
+        chmod(fetched_file, 0o444)
+
+
+    if args.copy_to:
+        hardlink_or_copy(fetched_file, args.copy_to)
+        if not args.outputs:
+            args.outputs = [args.copy_to]
+
+    if args.rename_to:
+        args.rename.append(fetched_file)
+        if not args.outputs:
+            args.outputs = [args.rename_to]
+
+    if args.copy_to_dir:
+        hardlink_or_copy(fetched_file, os.path.join(args.copy_to_dir, file_name))
+
+    if args.untar_to:
+        ensure_dir(args.untar_to)
+        inputs = set(map(os.path.normpath, args.rename + args.outputs[len(args.rename):]))
+        if fetched_file_is_dir:
+            for member in inputs:
+                base, name = member.split('/', 1)
+                src = os.path.normpath(os.path.join(fetched_file, name))
+                dst = os.path.normpath(os.path.join(args.untar_to, member))
+                hardlink_or_copy(src, dst)
+        else:
+           # Extract only requested files
+            try:
+                with tarfile.open(fetched_file, mode='r:*') as tar:
+                    members = [entry for entry in tar if os.path.normpath(os.path.join(args.untar_to, entry.name)) in inputs]
+                    tar.extractall(args.untar_to, members=members)
+            except tarfile.ReadError as e:
+                logging.exception(e)
+                raise ResourceUnpackingError('File {} cannot be untared'.format(fetched_file))
+
+        # Forbid changes to the loaded resource data
+        for root, _, files in os.walk(args.untar_to):
+             for filename in files:
+                 chmod(os.path.join(root, filename), 0o444)
+
+
+    for src, dst in zip(args.rename, args.outputs):
+        if src == 'RESOURCE':
+            src = fetched_file
+        if os.path.abspath(src) == os.path.abspath(fetched_file):
+            logging.info('Copying %s to %s', src, dst)
+            hardlink_or_copy(src, dst)
+        else:
+            logging.info('Renaming %s to %s', src, dst)
+            if os.path.exists(dst):
+                raise ResourceUnpackingError("Target file already exists ({} -> {})".format(src, dst))
+            if remove:
+                rename_or_copy_and_remove(src, dst)
+            else:
+                hardlink_or_copy(src, dst)
+
+    for path in args.outputs:
+        if not os.path.exists(path):
+            raise OutputNotExistError('Output does not exist: %s' % os.path.abspath(path))
+        if not os.path.isfile(path):
+            raise OutputIsDirectoryError('Output must be a file, not a directory: %s' % os.path.abspath(path))
+        if args.executable:
+            chmod(path, os.stat(path).st_mode | 0o111)
+        if os.path.abspath(path) == os.path.abspath(fetched_file):
+            remove = False
+
+    if remove:
+        if fetched_file_is_dir:
+            shutil.rmtree(fetched_file)
+        else:
+            os.remove(fetched_file)
diff --git a/build/scripts/fetch_from_archive.py b/build/scripts/fetch_from_archive.py
new file mode 100644
index 0000000000..57aff91b5e
--- /dev/null
+++ b/build/scripts/fetch_from_archive.py
@@ -0,0 +1,36 @@
+import os
+import sys
+import logging
+import argparse
+
+import fetch_from
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    fetch_from.add_common_arguments(parser)
+    parser.add_argument('--file-name', required=True)
+    parser.add_argument('--archive', required=True)
+
+    return parser.parse_args()
+
+def main(args):
+    archive = args.archive
+    file_name = args.file_name.rstrip('-')
+
+    fetch_from.process(archive, file_name, args, remove=False)
+
+
+if __name__ == '__main__':
+    args = parse_args()
+    fetch_from.setup_logging(args, os.path.basename(__file__))
+
+    try:
+        main(args)
+    except Exception as e:
+        logging.exception(e)
+        print >>sys.stderr, open(args.abs_log_path).read()
+        sys.stderr.flush()
+
+        import error
+        sys.exit(error.ExitCodes.INFRASTRUCTURE_ERROR if fetch_from.is_temporary(e) else 1)
diff --git a/build/scripts/fetch_from_external.py b/build/scripts/fetch_from_external.py
new file mode 100644
index 0000000000..d4ed6f4221
--- /dev/null
+++ b/build/scripts/fetch_from_external.py
@@ -0,0 +1,60 @@
+import sys
+import json
+import os.path
+import fetch_from
+import argparse
+import logging
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    fetch_from.add_common_arguments(parser)
+    parser.add_argument('--external-file', required=True)
+    parser.add_argument('--custom-fetcher')
+    parser.add_argument('--resource-file')
+    return parser.parse_args()
+
+
+def main(args):
+    external_file = args.external_file.rstrip('.external')
+    if os.path.isfile(args.resource_file):
+        fetch_from.process(args.resource_file, os.path.basename(args.resource_file), args, False)
+        return
+
+    error = None
+    try:
+        with open(args.external_file) as f:
+            js = json.load(f)
+
+            if js['storage'] == 'SANDBOX':
+                import fetch_from_sandbox as ffsb
+                del args.external_file
+                args.resource_id = js['resource_id']
+                ffsb.main(args)
+            elif js['storage'] == 'MDS':
+                import fetch_from_mds as fmds
+                del args.external_file
+                args.key = js['resource_id']
+                fmds.main(args)
+            else:
+                error = 'Unsupported storage in {}'.format(external_file)
+    except:
+        logging.error('Invalid external file: {}'.format(external_file))
+        raise
+    if error:
+        raise Exception(error)
+
+
+if __name__ == '__main__':
+    args = parse_args()
+    fetch_from.setup_logging(args, os.path.basename(__file__))
+
+    try:
+        main(args)
+    except Exception as e:
+        logging.exception(e)
+        print >>sys.stderr, open(args.abs_log_path).read()
+        sys.stderr.flush()
+
+        import error
+        sys.exit(error.ExitCodes.INFRASTRUCTURE_ERROR if fetch_from.is_temporary(e) else 1)
diff --git a/build/scripts/fetch_from_mds.py b/build/scripts/fetch_from_mds.py
new file mode 100644
index 0000000000..5e4e656394
--- /dev/null
+++ b/build/scripts/fetch_from_mds.py
@@ -0,0 +1,50 @@
+import os
+import sys
+import logging
+import argparse
+
+import fetch_from
+
+MDS_PREFIX = "https://storage.yandex-team.ru/get-devtools/"
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    fetch_from.add_common_arguments(parser)
+
+    parser.add_argument('--key', required=True)
+
+    return parser.parse_args()
+
+
+def fetch(key):
+    parts = key.split("/")
+    if len(parts) != 3:
+        raise ValueError("Invalid MDS key '{}'".format(key))
+
+    _, sha1, file_name = parts
+
+    fetched_file = fetch_from.fetch_url(MDS_PREFIX + key, False, file_name, expected_sha1=sha1)
+
+    return fetched_file, file_name
+
+
+def main(args):
+    fetched_file, resource_file_name = fetch(args.key)
+
+    fetch_from.process(fetched_file, resource_file_name, args)
+
+
+if __name__ == '__main__':
+    args = parse_args()
+    fetch_from.setup_logging(args, os.path.basename(__file__))
+
+    try:
+        main(args)
+    except Exception as e:
+        logging.exception(e)
+        print >>sys.stderr, open(args.abs_log_path).read()
+        sys.stderr.flush()
+
+        import error
+        sys.exit(error.ExitCodes.INFRASTRUCTURE_ERROR if fetch_from.is_temporary(e) else 1)
diff --git a/build/scripts/fetch_from_npm.py b/build/scripts/fetch_from_npm.py
new file mode 100644
index 0000000000..3f87c1fefa
--- /dev/null
+++ b/build/scripts/fetch_from_npm.py
@@ -0,0 +1,109 @@
+import os
+import sys
+import time
+import logging
+import argparse
+import hashlib
+
+import sky
+import fetch_from
+
+
+NPM_BASEURL = "http://npm.yandex-team.ru/"
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    fetch_from.add_common_arguments(parser)
+
+    parser.add_argument("--name", required=True)
+    parser.add_argument("--version", required=True)
+    parser.add_argument("--sky-id", required=True)
+    parser.add_argument("--integrity", required=True)
+    parser.add_argument("--integrity-algorithm", required=True)
+
+    return parser.parse_args()
+
+
+def fetch(name, version, sky_id, integrity, integrity_algorithm, file_name, tries=5):
+    """
+    :param name: package name
+    :type name: str
+    :param version: package version
+    :type version: str
+    :param sky_id: sky id of tarball
+    :type sky_id: str
+    :param integrity: tarball integrity (hex)
+    :type integrity: str
+    :param integrity_algorithm: integrity algorithm (known for openssl)
+    :type integrity_algorithm: str
+    :param tries: tries count
+    :type tries: int
+    :return: path to fetched file
+    :rtype: str
+    """
+    # if sky.is_avaliable() and 'NOTS_FETCH_FROM_HTTP_ONLY' not in os.environ:
+    #    fetcher = lambda: sky.fetch(sky_id, file_name)
+    # else:
+    # Отключаем походы через скай
+    # TODO: https://st.yandex-team.ru/FBP-351
+    if 'NOTS_FETCH_FROM_SKY' in os.environ and sky.is_avaliable():
+        fetcher = lambda: sky.fetch(sky_id, file_name)
+    else:
+        fetcher = lambda: _fetch_via_http(name, version, integrity, integrity_algorithm, file_name)
+
+    fetched_file = None
+    exc_info = None
+
+    for i in range(0, tries):
+        try:
+            fetched_file = fetcher()
+            exc_info = None
+            break
+        except Exception as e:
+            logging.exception(e)
+            exc_info = exc_info or sys.exc_info()
+            time.sleep(i)
+
+    if exc_info:
+        raise exc_info[0], exc_info[1], exc_info[2]
+
+    return fetched_file
+
+
+def _fetch_via_http(name, version, integrity, integrity_algorithm, file_name):
+    # Example: "http://npm.yandex-team.ru/@scope/name/-/name-0.0.1.tgz" for @scope/name v0.0.1.
+    url = NPM_BASEURL + "/".join([name, "-", "{}-{}.tgz".format(name.split("/").pop(), version)])
+
+    hashobj = hashlib.new(integrity_algorithm)
+    fetched_file = fetch_from.fetch_url(url, False, file_name, tries=1, writers=[hashobj.update])
+
+    if hashobj.hexdigest() != integrity:
+        raise fetch_from.BadChecksumFetchError("Expected {}, but got {} for {}".format(
+            integrity,
+            hashobj.hexdigest(),
+            file_name,
+        ))
+
+    return fetched_file
+
+
+def main(args):
+    file_name = os.path.basename(args.copy_to)
+    fetched_file = fetch(args.name, args.version, args.sky_id, args.integrity, args.integrity_algorithm, file_name)
+    fetch_from.process(fetched_file, file_name, args)
+
+
+if __name__ == "__main__":
+    args = parse_args()
+    fetch_from.setup_logging(args, os.path.basename(__file__))
+
+    try:
+        main(args)
+    except Exception as e:
+        logging.exception(e)
+        print >>sys.stderr, open(args.abs_log_path).read()
+        sys.stderr.flush()
+
+        import error
+        sys.exit(error.ExitCodes.INFRASTRUCTURE_ERROR if fetch_from.is_temporary(e) else 1)
diff --git a/build/scripts/fetch_from_sandbox.py b/build/scripts/fetch_from_sandbox.py
new file mode 100755
index 0000000000..6af180b4b0
--- /dev/null
+++ b/build/scripts/fetch_from_sandbox.py
@@ -0,0 +1,272 @@
+import itertools
+import json
+import logging
+import argparse
+import os
+import random
+import subprocess
+import sys
+import time
+import urllib2
+import uuid
+
+import fetch_from
+
+
+ORIGIN_SUFFIX = '?origin=fetch-from-sandbox'
+MDS_PREFIX = 'http://storage-int.mds.yandex.net/get-sandbox/'
+TEMPORARY_ERROR_CODES = (429, 500, 503, 504)
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    fetch_from.add_common_arguments(parser)
+    parser.add_argument('--resource-id', type=int, required=True)
+    parser.add_argument('--custom-fetcher')
+    parser.add_argument('--resource-file')
+    return parser.parse_args()
+
+
+class ResourceInfoError(Exception):
+    pass
+
+
+class UnsupportedProtocolException(Exception):
+    pass
+
+
+def _sky_path():
+    return "/usr/local/bin/sky"
+
+
+def _is_skynet_avaliable():
+    if not os.path.exists(_sky_path()):
+        return False
+    try:
+        subprocess.check_output([_sky_path(), "--version"])
+        return True
+    except subprocess.CalledProcessError:
+        return False
+    except OSError:
+        return False
+
+
+def download_by_skynet(resource_info, file_name):
+    def sky_get(skynet_id, target_dir, timeout=None):
+        cmd_args = [_sky_path(), 'get', "-N", "Backbone", "--user", "--wait", "--dir", target_dir, skynet_id]
+        if timeout is not None:
+            cmd_args += ["--timeout", str(timeout)]
+        logging.info('Call skynet with args: %s', cmd_args)
+        stdout = subprocess.check_output(cmd_args).strip()
+        logging.debug('Skynet call with args %s is finished, result is %s', cmd_args, stdout)
+        return stdout
+
+    if not _is_skynet_avaliable():
+        raise UnsupportedProtocolException("Skynet is not available")
+
+    skynet_id = resource_info.get("skynet_id")
+    if not skynet_id:
+        raise ValueError("Resource does not have skynet_id")
+
+    temp_dir = os.path.abspath(fetch_from.uniq_string_generator())
+    os.mkdir(temp_dir)
+    sky_get(skynet_id, temp_dir)
+    return os.path.join(temp_dir, file_name)
+
+
+def _urlopen(url, data=None, headers=None):
+    n = 10
+    tout = 30
+    started = time.time()
+    reqid = uuid.uuid4()
+
+    request = urllib2.Request(url, data=data, headers=headers or {})
+    request.add_header('X-Request-Timeout', str(tout))
+    request.add_header('X-Request-Id', str(reqid))
+    request.add_header('User-Agent', 'fetch_from_sandbox.py')
+    for i in xrange(n):
+        retry_after = i
+        try:
+            request.add_header('X-Request-Duration', str(int(time.time() - started)))
+            return urllib2.urlopen(request, timeout=tout).read()
+
+        except urllib2.HTTPError as e:
+            logging.warning('failed to fetch URL %s with HTTP code %d: %s', url, e.code, e)
+            retry_after = int(e.headers.get('Retry-After', str(retry_after)))
+
+            if e.code not in TEMPORARY_ERROR_CODES:
+                raise
+
+        except Exception as e:
+            logging.warning('failed to fetch URL %s: %s', url, e)
+
+        if i + 1 == n:
+            raise e
+
+        time.sleep(retry_after)
+
+
+def _query(url):
+    return json.loads(_urlopen(url))
+
+
+_SANDBOX_BASE_URL = 'https://sandbox.yandex-team.ru/api/v1.0'
+
+
+def get_resource_info(resource_id, touch=False, no_links=False):
+    url = ''.join((_SANDBOX_BASE_URL, '/resource/', str(resource_id)))
+    headers = {}
+    if touch:
+        headers.update({'X-Touch-Resource': '1'})
+    if no_links:
+        headers.update({'X-No-Links': '1'})
+    return _query(url)
+
+
+def get_resource_http_links(resource_id):
+    url = ''.join((_SANDBOX_BASE_URL, '/resource/', str(resource_id), '/data/http'))
+    return [r['url'] + ORIGIN_SUFFIX for r in _query(url)]
+
+
+def fetch_via_script(script, resource_id):
+    return subprocess.check_output([script, str(resource_id)]).rstrip()
+
+
+def fetch(resource_id, custom_fetcher):
+    try:
+        resource_info = get_resource_info(resource_id, touch=True, no_links=True)
+    except Exception as e:
+        sys.stderr.write(
+            "Failed to fetch resource {}: {}\n".format(resource_id, str(e))
+        )
+        raise
+
+    if resource_info.get('state', 'DELETED') != 'READY':
+        raise ResourceInfoError("Resource {} is not READY".format(resource_id))
+
+    logging.info('Resource %s info %s', str(resource_id), json.dumps(resource_info))
+
+    is_multifile = resource_info.get('multifile', False)
+    resource_file_name = os.path.basename(resource_info["file_name"])
+    expected_md5 = resource_info.get('md5')
+
+    proxy_link = resource_info['http']['proxy'] + ORIGIN_SUFFIX
+    if is_multifile:
+        proxy_link += '&stream=tgz'
+
+    mds_id = resource_info.get('attributes', {}).get('mds')
+    mds_link = MDS_PREFIX + mds_id if mds_id else None
+
+    def get_storage_links():
+        storage_links = get_resource_http_links(resource_id)
+        random.shuffle(storage_links)
+        return storage_links
+
+    skynet = _is_skynet_avaliable()
+
+    if not skynet:
+        logging.info("Skynet is not available, will try other protocols")
+
+    def iter_tries():
+        if skynet:
+            yield lambda: download_by_skynet(resource_info, resource_file_name)
+
+        if custom_fetcher:
+            yield lambda: fetch_via_script(custom_fetcher, resource_id)
+
+        # Don't try too hard here: we will get back to proxy later on
+        yield lambda: fetch_from.fetch_url(proxy_link, False, resource_file_name, expected_md5, tries=2)
+        for x in get_storage_links():
+            # Don't spend too much time connecting single host
+            yield lambda: fetch_from.fetch_url(x, False, resource_file_name, expected_md5, tries=1)
+            if mds_link is not None:
+                # Don't try too hard here: we will get back to MDS later on
+                yield lambda: fetch_from.fetch_url(mds_link, True, resource_file_name, expected_md5, tries=2)
+        yield lambda: fetch_from.fetch_url(proxy_link, False, resource_file_name, expected_md5)
+        if mds_link is not None:
+            yield lambda: fetch_from.fetch_url(mds_link, True, resource_file_name, expected_md5)
+
+    if resource_info.get('attributes', {}).get('ttl') != 'inf':
+        sys.stderr.write('WARNING: resource {} ttl is not "inf".\n'.format(resource_id))
+
+    exc_info = None
+    for i, action in enumerate(itertools.islice(iter_tries(), 0, 10)):
+        try:
+            fetched_file = action()
+            break
+        except UnsupportedProtocolException:
+            pass
+        except subprocess.CalledProcessError as e:
+            logging.warning('failed to fetch resource %s with subprocess: %s', resource_id, e)
+            time.sleep(i)
+        except urllib2.HTTPError as e:
+            logging.warning('failed to fetch resource %s with HTTP code %d: %s', resource_id, e.code, e)
+            if e.code not in TEMPORARY_ERROR_CODES:
+                exc_info = exc_info or sys.exc_info()
+            time.sleep(i)
+        except Exception as e:
+            logging.exception(e)
+            exc_info = exc_info or sys.exc_info()
+            time.sleep(i)
+    else:
+        if exc_info:
+            raise exc_info[0], exc_info[1], exc_info[2]
+        else:
+            raise Exception("No available protocol and/or server to fetch resource")
+
+    return fetched_file, resource_info['file_name']
+
+
+def _get_resource_info_from_file(resource_file):
+    if resource_file is None or not os.path.exists(resource_file):
+        return None
+
+    RESOURCE_INFO_JSON = "resource_info.json"
+    RESOURCE_CONTENT_FILE_NAME = "resource"
+
+    resource_dir, resource_file = os.path.split(resource_file)
+    if resource_file != RESOURCE_CONTENT_FILE_NAME:
+        return None
+
+    resource_json = os.path.join(resource_dir, RESOURCE_INFO_JSON)
+    if not os.path.isfile(resource_json):
+        return None
+
+    try:
+        with open(resource_json, 'r') as j:
+            resource_info = json.load(j)
+        resource_info['file_name']  # check consistency
+        return resource_info
+    except:
+        logging.debug('Invalid %s in %s', RESOURCE_INFO_JSON, resource_dir)
+
+    return None
+
+
+def main(args):
+    custom_fetcher = os.environ.get('YA_CUSTOM_FETCHER')
+
+    resource_info = _get_resource_info_from_file(args.resource_file)
+    if resource_info:
+        fetched_file = args.resource_file
+        file_name = resource_info['file_name']
+    else:
+        # This code should be merged to ya and removed.
+        fetched_file, file_name = fetch(args.resource_id, custom_fetcher)
+
+    fetch_from.process(fetched_file, file_name, args, remove=not custom_fetcher and not resource_info)
+
+
+if __name__ == '__main__':
+    args = parse_args()
+    fetch_from.setup_logging(args, os.path.basename(__file__))
+
+    try:
+        main(args)
+    except Exception as e:
+        logging.exception(e)
+        print >>sys.stderr, open(args.abs_log_path).read()
+        sys.stderr.flush()
+
+        import error
+        sys.exit(error.ExitCodes.INFRASTRUCTURE_ERROR if fetch_from.is_temporary(e) else 1)
diff --git a/build/scripts/fetch_resource.py b/build/scripts/fetch_resource.py
new file mode 100644
index 0000000000..d5af311e5d
--- /dev/null
+++ b/build/scripts/fetch_resource.py
@@ -0,0 +1,43 @@
+import urllib2
+import argparse
+import xmlrpclib
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-r', '--resource-id', type=int, required=True)
+    parser.add_argument('-o', '--output', required=True)
+    return parser.parse_args()
+
+
+def fetch(url, retries=4, timeout=5):
+    for i in xrange(retries):
+        try:
+            return urllib2.urlopen(url, timeout=timeout).read()
+
+        except Exception:
+            if i + 1 < retries:
+                continue
+
+            else:
+                raise
+
+
+def fetch_resource(id_):
+    urls = xmlrpclib.ServerProxy("https://sandbox.yandex-team.ru/sandbox/xmlrpc").get_resource_http_links(id_)
+
+    for u in urls:
+        try:
+            return fetch(u)
+
+        except Exception:
+            continue
+
+    raise Exception('Cannot fetch resource {}'.format(id_))
+
+
+if __name__ == '__main__':
+    args = parse_args()
+
+    with open(args.output, 'wb') as f:
+        f.write(fetch_resource(int(args.resource_id)))
diff --git a/build/scripts/filter_zip.py b/build/scripts/filter_zip.py
new file mode 100644
index 0000000000..b2121b9c9e
--- /dev/null
+++ b/build/scripts/filter_zip.py
@@ -0,0 +1,71 @@
+import argparse
+import os
+import re
+import uuid
+import zipfile
+
+
+def pattern_to_regexp(p):
+    return re.compile(
+        '^'
+        + re.escape(p)
+        .replace(r'\*\*\/', '[_DIR_]')
+        .replace(r'\*', '[_FILE_]')
+        .replace('[_DIR_]', '(.*/)?')
+        .replace('[_FILE_]', '([^/]*)')
+        + '$'
+    )
+
+
+def is_deathman(positive_filter, negative_filter, candidate):
+    remove = positive_filter
+    for pf in positive_filter:
+        if pf.match(candidate):
+            remove = False
+            break
+    if not negative_filter or remove:
+        return remove
+    for nf in negative_filter:
+        if nf.match(candidate):
+            remove = True
+            break
+    return remove
+
+
+def just_do_it():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--positive', action='append', default=[])
+    parser.add_argument('--negative', action='append', default=[])
+    parser.add_argument('--file', action='store', required=True)
+    args = parser.parse_args()
+    if not args.positive and not args.negative:
+        return
+    pos = [pattern_to_regexp(i) for i in args.positive]
+    neg = [pattern_to_regexp(i) for i in args.negative]
+    temp_dirname = None
+    for _ in range(10):
+        candidate = '__unpacked_{}__'.format(uuid.uuid4())
+        if not os.path.exists(candidate):
+            temp_dirname = candidate
+            os.makedirs(temp_dirname)
+    if not temp_dirname:
+        raise Exception("Can't generate name for temp dir")
+
+    with zipfile.ZipFile(args.file, 'r') as zip_ref:
+        zip_ref.extractall(temp_dirname)
+
+    for root, _, files in os.walk(temp_dirname):
+        for f in files:
+            candidate = os.path.join(root, f).replace('\\', '/')
+            if is_deathman(pos, neg, os.path.relpath(candidate, temp_dirname)):
+                os.remove(candidate)
+
+    with zipfile.ZipFile(args.file, 'w') as zip_ref:
+        for root, _, files in os.walk(temp_dirname):
+            for f in files:
+                realname = os.path.join(root, f)
+                zip_ref.write(realname, os.path.sep.join(os.path.normpath(realname).split(os.path.sep, 2)[1:]))
+
+
+if __name__ == '__main__':
+    just_do_it()
diff --git a/build/scripts/find_and_tar.py b/build/scripts/find_and_tar.py
new file mode 100644
index 0000000000..f251623c68
--- /dev/null
+++ b/build/scripts/find_and_tar.py
@@ -0,0 +1,22 @@
+import os
+import sys
+import tarfile
+
+
+def find_gcno(dirname, tail):
+    for cur, _dirs, files in os.walk(dirname):
+        for f in files:
+            if f.endswith(tail):
+                yield os.path.relpath(os.path.join(cur, f))
+
+
+def main(args):
+    output = args[0]
+    tail = args[1] if len(args) > 1 else ''
+    with tarfile.open(output, 'w:') as tf:
+        for f in find_gcno(os.getcwd(), tail):
+            tf.add(f)
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/build/scripts/find_time_trace.py b/build/scripts/find_time_trace.py
new file mode 100644
index 0000000000..954d203caa
--- /dev/null
+++ b/build/scripts/find_time_trace.py
@@ -0,0 +1,17 @@
+import os
+import sys
+
+# /scripts/find_time_trace.py <object_file> <destination>
+# clang generates `-ftime-trace` output file path based on main output file path
+
+
+def main():
+    assert len(sys.argv) == 3
+    obj_path = sys.argv[1]
+    trace_path = sys.argv[2]
+    orig_trace_path = obj_path.rpartition('.o')[0] + '.json'
+    os.rename(orig_trace_path, trace_path)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/fix_java_command_file_cp.py b/build/scripts/fix_java_command_file_cp.py
new file mode 100644
index 0000000000..fc87048c32
--- /dev/null
+++ b/build/scripts/fix_java_command_file_cp.py
@@ -0,0 +1,34 @@
+import sys
+import os
+import argparse
+import subprocess
+import platform
+
+
+def fix_files(args):
+    args = args[:]
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--build-root', default=None)
+    args, tail = parser.parse_known_args(args)
+    for idx, arg in list(enumerate(tail)):
+        if arg.startswith('@') and os.path.isfile(arg[1:]):
+            with open(arg[1:]) as f:
+                fixed = [i.strip() for i in f]
+                if args.build_root:
+                    fixed = [os.path.join(args.build_root, i) for ln in fixed for i in ln.split(os.path.pathsep)]
+                fixed = os.pathsep.join([i.strip() for i in fixed])
+            fixed_name = list(os.path.splitext(arg))
+            fixed_name[0] += '_fixed'
+            fixed_name = ''.join(fixed_name)
+            with open(fixed_name[1:], 'w') as f:
+                f.write(fixed)
+            tail[idx:idx + 1] = [fixed_name]
+    return tail
+
+
+if __name__ == '__main__':
+    args = fix_files(sys.argv[1:])
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(args).wait())
+    else:
+        os.execv(args[0], args)
diff --git a/build/scripts/fix_msvc_output.py b/build/scripts/fix_msvc_output.py
new file mode 100644
index 0000000000..183a442e1f
--- /dev/null
+++ b/build/scripts/fix_msvc_output.py
@@ -0,0 +1,43 @@
+import subprocess
+import sys
+
+import process_command_files as pcf
+import process_whole_archive_option as pwa
+
+
+def out2err(cmd):
+    return subprocess.Popen(cmd, stdout=sys.stderr).wait()
+
+
+def decoding_needed(strval):
+    if sys.version_info >= (3, 0, 0):
+        return isinstance(strval, bytes)
+    else:
+        return False
+
+
+def out2err_cut_first_line(cmd):
+    p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+    first_line = True
+    while True:
+        line = p.stdout.readline()
+        line = line.decode('utf-8') if decoding_needed(line) else line
+        if not line:
+            break
+        if first_line:
+            sys.stdout.write(line)
+            first_line = False
+        else:
+            sys.stderr.write(line)
+    return p.wait()
+
+
+if __name__ == '__main__':
+    mode = sys.argv[1]
+    args, wa_peers, wa_libs = pwa.get_whole_archive_peers_and_libs(pcf.skip_markers(sys.argv[2:]))
+    cmd = pwa.ProcessWholeArchiveOption('WINDOWS', wa_peers, wa_libs).construct_cmd(args)
+    run = out2err
+    if mode in ('cl', 'ml'):
+        # First line of cl.exe and ml64.exe stdout is useless: it prints input file
+        run = out2err_cut_first_line
+    sys.exit(run(cmd))
diff --git a/build/scripts/fs_tools.py b/build/scripts/fs_tools.py
new file mode 100644
index 0000000000..63ca00932e
--- /dev/null
+++ b/build/scripts/fs_tools.py
@@ -0,0 +1,117 @@
+from __future__ import print_function
+
+import os
+import platform
+import sys
+import shutil
+import errno
+
+import process_command_files as pcf
+
+
+def link_or_copy(src, dst, trace={}):
+    if dst not in trace:
+        trace[dst] = src
+
+    try:
+        if platform.system().lower() == 'windows':
+            shutil.copy(src, dst)
+        else:
+            os.link(src, dst)
+    except OSError as e:
+        if e.errno == errno.EEXIST:
+            if dst in trace:
+                print(
+                    '[[bad]]link_or_copy: copy collision found - tried to copy {} to {} which was copied earlier from {}[[rst]]'.format(
+                        src, dst, trace[dst]
+                    ),
+                    file=sys.stderr,
+                )
+            else:
+                print('[[bad]]link_or_copy: destination file already exists: {}[[rst]]'.format(dst), file=sys.stderr)
+        if e.errno == errno.ENOENT:
+            print('[[bad]]link_or_copy: source file doesn\'t exists: {}[[rst]]'.format(src), file=sys.stderr)
+        raise
+
+
+if __name__ == '__main__':
+    mode = sys.argv[1]
+    args = pcf.get_args(sys.argv[2:])
+
+    if mode == 'copy':
+        shutil.copy(args[0], args[1])
+    elif mode == 'copy_tree_no_link':
+        dst = args[1]
+        shutil.copytree(
+            args[0], dst, ignore=lambda dirname, names: [n for n in names if os.path.islink(os.path.join(dirname, n))]
+        )
+    elif mode == 'copy_files':
+        src = args[0]
+        dst = args[1]
+        files = open(args[2]).read().strip().split()
+        for f in files:
+            s = os.path.join(src, f)
+            d = os.path.join(dst, f)
+            if os.path.exists(d):
+                continue
+            try:
+                os.makedirs(os.path.dirname(d))
+            except OSError:
+                pass
+            shutil.copy(s, d)
+    elif mode == 'copy_all_files':
+        src = args[0]
+        dst = args[1]
+        for root, _, files in os.walk(src):
+            for f in files:
+                if os.path.islink(os.path.join(root, f)):
+                    continue
+                file_dst = os.path.join(dst, os.path.relpath(root, src), f)
+                if os.path.exists(file_dst):
+                    continue
+                try:
+                    os.makedirs(os.path.dirname(file_dst))
+                except OSError:
+                    pass
+                shutil.copy(os.path.join(root, f), file_dst)
+    elif mode == 'rename_if_exists':
+        if os.path.exists(args[0]):
+            shutil.move(args[0], args[1])
+    elif mode == 'rename':
+        targetdir = os.path.dirname(args[1])
+        if targetdir and not os.path.exists(targetdir):
+            os.makedirs(os.path.dirname(args[1]))
+        shutil.move(args[0], args[1])
+    elif mode == 'remove':
+        for f in args:
+            try:
+                if os.path.isfile(f) or os.path.islink(f):
+                    os.remove(f)
+                else:
+                    shutil.rmtree(f)
+            except OSError:
+                pass
+    elif mode == 'link_or_copy':
+        link_or_copy(args[0], args[1])
+    elif mode == 'link_or_copy_to_dir':
+        assert len(args) > 1
+        start = 0
+        if args[0] == '--no-check':
+            if args == 2:
+                sys.exit()
+            start = 1
+        dst = args[-1]
+        for src in args[start:-1]:
+            link_or_copy(src, os.path.join(dst, os.path.basename(src)))
+    elif mode == 'cat':
+        with open(args[0], 'w') as dst:
+            for input_name in args[1:]:
+                with open(input_name) as src:
+                    dst.write(src.read())
+    elif mode == 'md':
+        try:
+            os.makedirs(args[0])
+        except OSError:
+            pass
+    else:
+        raise Exception('unsupported tool %s' % mode)
diff --git a/build/scripts/gen_aar_gradle_script.py b/build/scripts/gen_aar_gradle_script.py
new file mode 100644
index 0000000000..67c3ac2ef3
--- /dev/null
+++ b/build/scripts/gen_aar_gradle_script.py
@@ -0,0 +1,284 @@
+import argparse
+import os
+import tarfile
+
+FLAT_DIRS_REPO_TEMPLATE='flatDir {{ dirs {dirs} }}\n'
+MAVEN_REPO_TEMPLATE='maven {{ url "{repo}" }}\n'
+KEYSTORE_TEMLATE='signingConfigs {{ debug {{ storeFile file("{keystore}") }} }}\n'
+
+DO_NOT_STRIP = '''\
+    packagingOptions {
+        doNotStrip "*/arm64-v8a/*.so"
+        doNotStrip "*/armeabi-v7a/*.so"
+        doNotStrip "*/x86_64/*.so"
+        doNotStrip "*/x86/*.so"
+    }
+'''
+
+AAR_TEMPLATE = """\
+ext.jniLibsDirs = [
+    {jni_libs_dirs}
+]
+
+ext.resDirs = [
+    {res_dirs}
+]
+
+ext.assetsDirs = [
+    {assets_dirs}
+]
+
+ext.javaDirs = [
+    {java_dirs}
+]
+
+def aidlDirs = [
+    {aidl_dirs}
+]
+
+ext.bundles = [
+    {bundles}
+]
+
+ext.androidArs = [
+    {aars}
+]
+
+ext.compileOnlyAndroidArs = [
+    {compile_only_aars}
+]
+
+def minVersion = 21
+def compileVersion = 30
+def targetVersion = 30
+def buildVersion = '30.0.3'
+
+import com.android.build.gradle.LibraryPlugin
+import java.nio.file.Files
+import java.nio.file.Paths
+import java.util.regex.Matcher
+import java.util.regex.Pattern
+import java.util.zip.ZipFile
+
+
+apply plugin: 'com.github.dcendents.android-maven'
+
+buildDir = "$projectDir/build"
+
+if (!ext.has("packageSuffix"))
+    ext.packageSuffix = ""
+
+buildscript {{
+//     repositories {{
+//         jcenter()
+//         mavenCentral()
+//     }}
+
+    repositories {{
+        {maven_repos}
+    }}
+
+    dependencies {{
+        classpath 'com.android.tools.build:gradle:4.0.2'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
+    }}
+}}
+
+apply plugin: LibraryPlugin
+
+repositories {{
+//     flatDir {{
+//         dirs System.env.PKG_ROOT + '/bundle'
+//     }}
+//     maven {{
+//         url "http://maven.google.com/"
+//     }}
+//     maven {{
+//         url "http://artifactory.yandex.net/artifactory/public/"
+//     }}
+
+    {flat_dirs_repo}
+
+    {maven_repos}
+}}
+
+android {{
+    {keystore}
+
+    compileSdkVersion compileVersion
+    buildToolsVersion buildVersion
+
+    defaultConfig {{
+        minSdkVersion minVersion
+        targetSdkVersion targetVersion
+        consumerProguardFiles '{proguard_rules}'
+    }}
+
+    sourceSets {{
+        main  {{
+            manifest.srcFile '{manifest}'
+            jniLibs.srcDirs = jniLibsDirs
+            res.srcDirs = resDirs
+            assets.srcDirs = assetsDirs
+            java.srcDirs = javaDirs
+            aidl.srcDirs = aidlDirs
+        }}
+        // We don't use this feature, so we set it to nonexisting directory
+        androidTest.setRoot('bundle/tests')
+    }}
+
+    {do_not_strip}
+
+    dependencies {{
+        for (bundle in bundles)
+            compile("$bundle") {{
+                transitive = true
+            }}
+        for (bundle in androidArs)
+            compile(bundle) {{
+                transitive = true
+            }}
+        for (bundle in compileOnlyAndroidArs)
+            compileOnly(bundle)
+    }}
+
+    android.libraryVariants.all {{ variant ->
+        def suffix = variant.buildType.name.capitalize()
+
+        def sourcesJarTask = project.tasks.create(name: "sourcesJar${{suffix}}", type: Jar) {{
+            classifier = 'sources'
+            from android.sourceSets.main.java.srcDirs
+            include '**/*.java'
+            eachFile {{ fcd ->
+                def segments = fcd.relativePath.segments
+                if (segments[0] == 'impl') {{
+                    fcd.relativePath = new RelativePath(true, segments.drop(1))
+                }}
+            }}
+            includeEmptyDirs = false
+        }}
+
+        def manifestFile = android.sourceSets.main.manifest.srcFile
+        def manifestXml = new XmlParser().parse(manifestFile)
+
+        def packageName = manifestXml['@package']
+        def groupName = packageName.tokenize('.')[0..-2].join('.')
+
+        def androidNs = new groovy.xml.Namespace("http://schemas.android.com/apk/res/android")
+        def packageVersion = manifestXml.attributes()[androidNs.versionName]
+
+        def writePomTask = project.tasks.create(name: "writePom${{suffix}}") {{
+            pom {{
+                project {{
+                    groupId groupName
+                    version packageVersion
+                    packaging 'aar'
+                }}
+            }}.writeTo("$buildDir/${{rootProject.name}}$packageSuffix-pom.xml")
+        }}
+
+        tasks["bundle${{suffix}}Aar"].dependsOn sourcesJarTask
+        tasks["bundle${{suffix}}Aar"].dependsOn writePomTask
+    }}
+}}
+
+"""
+
+
+def gen_build_script(args):
+
+    def wrap(items):
+        return ',\n    '.join('"{}"'.format(x) for x in items)
+
+    bundles = []
+    bundles_dirs = set(args.flat_repos)
+    for bundle in args.bundles:
+        dir_name, base_name = os.path.split(bundle)
+        assert(len(dir_name) > 0 and len(base_name) > 0)
+        name, ext = os.path.splitext(base_name)
+        assert(len(name) > 0 and ext == '.aar')
+        bundles_dirs.add(dir_name)
+        bundles.append('com.yandex:{}@aar'.format(name))
+
+    if len(bundles_dirs) > 0:
+        flat_dirs_repo = FLAT_DIRS_REPO_TEMPLATE.format(dirs=wrap(bundles_dirs))
+    else:
+        flat_dirs_repo = ''
+
+    maven_repos = ''.join(MAVEN_REPO_TEMPLATE.format(repo=repo) for repo in args.maven_repos)
+
+    if args.keystore:
+        keystore = KEYSTORE_TEMLATE.format(keystore=args.keystore)
+    else:
+        keystore = ''
+
+    if args.do_not_strip:
+        do_not_strip = DO_NOT_STRIP
+    else:
+        do_not_strip = ''
+
+    return AAR_TEMPLATE.format(
+        aars=wrap(args.aars),
+        compile_only_aars=wrap(args.compile_only_aars),
+        aidl_dirs=wrap(args.aidl_dirs),
+        assets_dirs=wrap(args.assets_dirs),
+        bundles=wrap(bundles),
+        do_not_strip=do_not_strip,
+        flat_dirs_repo=flat_dirs_repo,
+        java_dirs=wrap(args.java_dirs),
+        jni_libs_dirs=wrap(args.jni_libs_dirs),
+        keystore=keystore,
+        manifest=args.manifest,
+        maven_repos=maven_repos,
+        proguard_rules=args.proguard_rules,
+        res_dirs=wrap(args.res_dirs),
+    )
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--aars', nargs='*', default=[])
+    parser.add_argument('--compile-only-aars', nargs='*', default=[])
+    parser.add_argument('--aidl-dirs', nargs='*', default=[])
+    parser.add_argument('--assets-dirs', nargs='*', default=[])
+    parser.add_argument('--bundle-name', nargs='?', default='default-bundle-name')
+    parser.add_argument('--bundles', nargs='*', default=[])
+    parser.add_argument('--do-not-strip', action='store_true')
+    parser.add_argument('--flat-repos', nargs='*', default=[])
+    parser.add_argument('--java-dirs', nargs='*', default=[])
+    parser.add_argument('--jni-libs-dirs', nargs='*', default=[])
+    parser.add_argument('--keystore', default=None)
+    parser.add_argument('--manifest', required=True)
+    parser.add_argument('--maven-repos', nargs='*', default=[])
+    parser.add_argument('--output-dir', required=True)
+    parser.add_argument('--peers', nargs='*', default=[])
+    parser.add_argument('--proguard-rules', nargs='?', default=None)
+    parser.add_argument('--res-dirs', nargs='*', default=[])
+    args = parser.parse_args()
+
+    if args.proguard_rules is None:
+        args.proguard_rules = os.path.join(args.output_dir, 'proguard-rules.txt')
+        with open(args.proguard_rules, 'w') as f:
+            pass
+
+    for index, jsrc in enumerate(filter(lambda x: x.endswith('.jsrc'), args.peers)):
+        jsrc_dir = os.path.join(args.output_dir, 'jsrc_{}'.format(str(index)))
+        os.makedirs(jsrc_dir)
+        with tarfile.open(jsrc, 'r') as tar:
+            tar.extractall(path=jsrc_dir)
+            args.java_dirs.append(jsrc_dir)
+
+    args.build_gradle = os.path.join(args.output_dir, 'build.gradle')
+    args.settings_gradle = os.path.join(args.output_dir, 'settings.gradle')
+    args.gradle_properties = os.path.join(args.output_dir, 'gradle.properties')
+
+    content = gen_build_script(args)
+    with open(args.build_gradle, 'w') as f:
+        f.write(content)
+
+    with open(args.gradle_properties, 'w') as f:
+        f.write('android.useAndroidX=true')
+
+    if args.bundle_name:
+        with open(args.settings_gradle, 'w') as f:
+            f.write('rootProject.name = "{}"'.format(args.bundle_name))
diff --git a/build/scripts/gen_java_codenav_entry.py b/build/scripts/gen_java_codenav_entry.py
new file mode 100644
index 0000000000..ff0a5c737d
--- /dev/null
+++ b/build/scripts/gen_java_codenav_entry.py
@@ -0,0 +1,57 @@
+import argparse
+import datetime
+import os
+import subprocess
+import sys
+import tarfile
+
+
+def extract_kindexes(kindexes):
+    for kindex in kindexes:
+        with tarfile.TarFile(kindex) as tf:
+            for fname in [i for i in tf.getnames() if i.endswith('.kzip')]:
+                tf.extract(fname)
+                yield fname
+
+
+def just_do_it(java, kythe, kythe_to_proto, out_name, binding_only, kindexes):
+    temp_out_name = out_name + '.temp'
+    kindex_inputs = list(extract_kindexes(kindexes))
+    open(temp_out_name, 'w').close()
+    start = datetime.datetime.now()
+    for kindex in kindex_inputs:
+        print >> sys.stderr, '[INFO] Processing:', kindex
+        indexer_start = datetime.datetime.now()
+        p = subprocess.Popen([java, '-jar', os.path.join(kythe, 'indexers/java_indexer.jar'), kindex], stdout=subprocess.PIPE)
+        indexer_out, _ = p.communicate()
+        print >> sys.stderr, '[INFO] Indexer execution time:', (datetime.datetime.now() - indexer_start).total_seconds(), 'seconds'
+        if p.returncode:
+            raise Exception('java_indexer failed with exit code {}'.format(p.returncode))
+        dedup_start = datetime.datetime.now()
+        p = subprocess.Popen([os.path.join(kythe, 'tools/dedup_stream')], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+        dedup_out, _ = p.communicate(indexer_out)
+        print >> sys.stderr, '[INFO] Dedup execution time:', (datetime.datetime.now() - dedup_start).total_seconds(), 'seconds'
+        if p.returncode:
+            raise Exception('dedup_stream failed with exit code {}'.format(p.returncode))
+        entrystream_start = datetime.datetime.now()
+        p = subprocess.Popen([os.path.join(kythe, 'tools/entrystream'), '--write_json'], stdin=subprocess.PIPE, stdout=open(temp_out_name, 'a'))
+        p.communicate(dedup_out)
+        if p.returncode:
+            raise Exception('entrystream failed with exit code {}'.format(p.returncode))
+        print >> sys.stderr, '[INFO] Entrystream execution time:', (datetime.datetime.now() - entrystream_start).total_seconds(), 'seconds'
+    preprocess_start = datetime.datetime.now()
+    subprocess.check_call([kythe_to_proto, '--preprocess-entry', '--entries', temp_out_name, '--out', out_name] + (['--only-binding-data'] if binding_only else []))
+    print >> sys.stderr, '[INFO] Preprocessing execution time:', (datetime.datetime.now() - preprocess_start).total_seconds(), 'seconds'
+    print >> sys.stderr, '[INFO] Total execution time:', (datetime.datetime.now() - start).total_seconds(), 'seconds'
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--java", help="java path")
+    parser.add_argument("--kythe", help="kythe path")
+    parser.add_argument("--kythe-to-proto", help="kythe_to_proto tool path")
+    parser.add_argument("--out-name", help="entries json out name")
+    parser.add_argument("--binding-only", action="store_true", default=False, help="filter only binding data")
+    parser.add_argument("kindexes", nargs='*')
+    args = parser.parse_args()
+    just_do_it(args.java, args.kythe, args.kythe_to_proto, args.out_name, args.binding_only, args.kindexes)
diff --git a/build/scripts/gen_java_codenav_protobuf.py b/build/scripts/gen_java_codenav_protobuf.py
new file mode 100644
index 0000000000..aee8cfe6c3
--- /dev/null
+++ b/build/scripts/gen_java_codenav_protobuf.py
@@ -0,0 +1,22 @@
+import argparse
+import os
+
+
+def just_do_it(kythe_to_proto, entries, out_name, build_file, source_root):
+    with open(build_file) as f:
+        classpath = os.pathsep.join([line.strip() for line in f])
+    os.execv(
+        kythe_to_proto,
+        [kythe_to_proto, '--sources-rel-root', 'fake_arcadia_root', '--entries', entries, '--out', out_name, '--classpath', classpath, '--arcadia-root', source_root]
+    )
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--kythe-to-proto", help="kythe_to_proto tool path")
+    parser.add_argument("--entries", help="entries json path")
+    parser.add_argument("--out-name", help="protbuf out name")
+    parser.add_argument("--build-file", help="build file( containing classpath )")
+    parser.add_argument("--source-root", help="source root")
+    args = parser.parse_args()
+    just_do_it(args.kythe_to_proto, args.entries, args.out_name, args.build_file, args.source_root)
diff --git a/build/scripts/gen_mx_table.py b/build/scripts/gen_mx_table.py
new file mode 100644
index 0000000000..187c21c539
--- /dev/null
+++ b/build/scripts/gen_mx_table.py
@@ -0,0 +1,75 @@
+import sys
+
+tmpl = """
+#include "yabs_mx_calc_table.h"
+
+#include <kernel/matrixnet/mn_sse.h>
+
+#include <library/cpp/archive/yarchive.h>
+
+#include <util/memory/blob.h>
+#include <util/generic/hash.h>
+#include <util/generic/ptr.h>
+#include <util/generic/singleton.h>
+
+using namespace NMatrixnet;
+
+extern "C" {
+    extern const unsigned char MxFormulas[];
+    extern const ui32 MxFormulasSize;
+}
+
+namespace {
+    struct TFml: public TBlob, public TMnSseInfo {
+        inline TFml(const TBlob& b)
+            : TBlob(b)
+            , TMnSseInfo(Data(), Size())
+        {
+        }
+    };
+
+    struct TFormulas: public THashMap<size_t, TAutoPtr<TFml>> {
+        inline TFormulas() {
+            TBlob b = TBlob::NoCopy(MxFormulas, MxFormulasSize);
+            TArchiveReader ar(b);
+            %s
+        }
+
+        inline const TMnSseInfo& at(size_t n) const noexcept {
+            return *find(n)->second;
+        }
+    };
+
+    %s
+
+    static func_descr_t yabs_funcs[] = {
+        %s
+    };
+}
+
+yabs_mx_calc_table_t yabs_mx_calc_table = {YABS_MX_CALC_VERSION, 10000, 0, yabs_funcs};
+"""
+
+if __name__ == '__main__':
+    init = []
+    body = []
+    defs = {}
+
+    for i in sys.argv[1:]:
+        name = i.replace('.', '_')
+        num = long(name.split('_')[1])
+
+        init.append('(*this)[%s] = new TFml(ar.ObjectBlobByKey("%s"));' % (num, '/' + i))
+
+        f1 = 'static void yabs_%s(size_t count, const float** args, double* res) {Singleton<TFormulas>()->at(%s).DoCalcRelevs(args, res, count);}' % (name, num)
+        f2 = 'static size_t yabs_%s_factor_count() {return Singleton<TFormulas>()->at(%s).MaxFactorIndex() + 1;}' % (name, num)
+
+        body.append(f1)
+        body.append(f2)
+
+        d1 = 'yabs_%s' % name
+        d2 = 'yabs_%s_factor_count' % name
+
+        defs[num] = '{%s, %s}' % (d1, d2)
+
+    print tmpl % ('\n'.join(init), '\n\n'.join(body), ',\n'.join((defs.get(i, '{nullptr, nullptr}') for i in range(0, 10000))))
diff --git a/build/scripts/gen_py3_reg.py b/build/scripts/gen_py3_reg.py
new file mode 100644
index 0000000000..149c094898
--- /dev/null
+++ b/build/scripts/gen_py3_reg.py
@@ -0,0 +1,34 @@
+import sys
+
+template = '''
+struct PyObject;
+extern "C" int PyImport_AppendInittab(const char* name, PyObject* (*initfunc)());
+extern "C" PyObject* {1}();
+
+namespace {
+    struct TRegistrar {
+        inline TRegistrar() {
+            // TODO Collect all modules and call PyImport_ExtendInittab once
+            PyImport_AppendInittab("{0}", {1});
+        }
+    } REG;
+}
+'''
+
+
+def mangle(name):
+    if '.' not in name:
+        return name
+    return ''.join('{}{}'.format(len(s), s) for s in name.split('.'))
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print >>sys.stderr, 'Usage: <path/to/gen_py_reg.py> <python_module_name> <output_file>'
+        print >>sys.stderr, 'Passed: ' + ' '.join(sys.argv)
+        sys.exit(1)
+
+    with open(sys.argv[2], 'w') as f:
+        modname = sys.argv[1]
+        initname = 'PyInit_' + mangle(modname)
+        code = template.replace('{0}', modname).replace('{1}', initname)
+        f.write(code)
diff --git a/build/scripts/gen_py_protos.py b/build/scripts/gen_py_protos.py
new file mode 100644
index 0000000000..08397472f9
--- /dev/null
+++ b/build/scripts/gen_py_protos.py
@@ -0,0 +1,67 @@
+import os
+from os import path
+import shutil
+import subprocess
+import sys
+import tempfile
+import argparse
+import re
+
+
+OUT_DIR_ARG = '--python_out='
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--suffixes", nargs="*", default=[])
+    parser.add_argument("protoc_args", nargs=argparse.REMAINDER)
+    script_args = parser.parse_args()
+
+    args = script_args.protoc_args
+
+    if args[0] == "--":
+        args = args[1:]
+
+    out_dir_orig = None
+    out_dir_temp = None
+    plugin_out_dirs_orig = {}
+    for i in range(len(args)):
+        if args[i].startswith(OUT_DIR_ARG):
+            assert not out_dir_orig, 'Duplicate "{0}" param'.format(OUT_DIR_ARG)
+            out_dir_orig = args[i][len(OUT_DIR_ARG):]
+            out_dir_temp = tempfile.mkdtemp(dir=out_dir_orig)
+            args[i] = OUT_DIR_ARG + out_dir_temp
+            continue
+
+        match = re.match(r"^(--(\w+)_out=).*", args[i])
+        if match:
+            plugin_out_dir_arg = match.group(1)
+            plugin = match.group(2)
+            assert plugin not in plugin_out_dirs_orig, 'Duplicate "{0}" param'.format(plugin_out_dir_arg)
+            plugin_out_dirs_orig[plugin] = args[i][len(plugin_out_dir_arg):]
+            assert plugin_out_dirs_orig[plugin] == out_dir_orig, 'Params "{0}" and "{1}" expected to have the same value'.format(OUT_DIR_ARG, plugin_out_dir_arg)
+            args[i] = plugin_out_dir_arg + out_dir_temp
+
+    assert out_dir_temp, 'Param "{0}" not found'.format(OUT_DIR_ARG)
+
+    retcode = subprocess.call(args)
+    assert not retcode, 'Protoc failed for command {}'.format(' '.join(args))
+
+    for root_temp, dirs, files in os.walk(out_dir_temp):
+        sub_dir = path.relpath(root_temp, out_dir_temp)
+        root_orig = path.join(out_dir_orig, sub_dir)
+        for d in dirs:
+            d_orig = path.join(root_orig, d)
+            if not path.exists(d_orig):
+                os.mkdir(d_orig)
+        for f in files:
+            f_orig = f
+            for suf in script_args.suffixes:
+                if f.endswith(suf):
+                    f_orig = f[:-len(suf)] + "__int__" + suf
+                    break
+            os.rename(path.join(root_temp, f), path.join(root_orig, f_orig))
+    shutil.rmtree(out_dir_temp)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/gen_py_reg.py b/build/scripts/gen_py_reg.py
new file mode 100644
index 0000000000..1560135ae8
--- /dev/null
+++ b/build/scripts/gen_py_reg.py
@@ -0,0 +1,32 @@
+import sys
+
+template = '''
+extern "C" void PyImport_AppendInittab(const char* name, void (*fn)(void));
+extern "C" void {1}();
+
+namespace {
+    struct TRegistrar {
+        inline TRegistrar() {
+            PyImport_AppendInittab("{0}", {1});
+        }
+    } REG;
+}
+'''
+
+
+def mangle(name):
+    if '.' not in name:
+        return name
+    return ''.join('{}{}'.format(len(s), s) for s in name.split('.'))
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print >>sys.stderr, 'Usage: <path/to/gen_py_reg.py> <python_module_name> <output_file>'
+        print >>sys.stderr, 'Passed: ' + ' '.join(sys.argv)
+        sys.exit(1)
+
+    with open(sys.argv[2], 'w') as f:
+        modname = sys.argv[1]
+        initname = 'init' + mangle(modname)
+        code = template.replace('{0}', modname).replace('{1}', initname)
+        f.write(code)
diff --git a/build/scripts/gen_swiftc_output_map.py b/build/scripts/gen_swiftc_output_map.py
new file mode 100644
index 0000000000..01ce85f256
--- /dev/null
+++ b/build/scripts/gen_swiftc_output_map.py
@@ -0,0 +1,15 @@
+import json
+import sys
+
+
+def just_do_it(args):
+    source_root, build_root, out_file, srcs = args[0], args[1], args[2], args[3:]
+    assert(len(srcs))
+    result_obj = {}
+    for src in srcs:
+        result_obj[src] = {'object': src.replace(source_root, build_root) + '.o'}
+    with open(out_file, 'w') as of:
+        of.write(json.dumps(result_obj))
+
+if __name__ == '__main__':
+    just_do_it(sys.argv[1:])
diff --git a/build/scripts/gen_tasklet_reg.py b/build/scripts/gen_tasklet_reg.py
new file mode 100644
index 0000000000..0f7f66ad51
--- /dev/null
+++ b/build/scripts/gen_tasklet_reg.py
@@ -0,0 +1,51 @@
+import argparse
+
+TEMPLATE = '''\
+{includes}\
+#include <tasklet/v1/runtime/lib/{language}_wrapper.h>
+#include <tasklet/v1/runtime/lib/registry.h>
+
+static const NTasklet::TRegHelper REG(
+    "{name}",
+    new NTasklet::{wrapper}
+);
+'''
+
+WRAPPER = {
+    'cpp': 'TCppWrapper<{impl}>()',
+    'js': 'TJsWrapper("{impl}")',
+    'go': 'TGoWrapper("{impl}")',
+    'py': 'TPythonWrapper("{impl}")',
+    'java': 'TJavaWrapper("{impl}", "{py_wrapper}")',
+}
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('name')
+    parser.add_argument('output')
+    parser.add_argument('-l', '--lang', choices=WRAPPER, required=True)
+    parser.add_argument('-i', '--impl', required=True)
+    parser.add_argument('-w', '--wrapper', required=False)
+    parser.add_argument('includes', nargs='*')
+
+    return parser.parse_args()
+
+
+if __name__ == '__main__':
+    args = parse_args()
+
+    includes = ''.join(
+        '#include <{}>\n'.format(include)
+        for include in args.includes
+    )
+
+    code = TEMPLATE.format(
+        includes=includes,
+        language=args.lang,
+        name=args.name,
+        wrapper=WRAPPER[args.lang].format(impl=args.impl, py_wrapper=args.wrapper),
+    )
+
+    with open(args.output, 'w') as f:
+        f.write(code)
diff --git a/build/scripts/gen_test_apk_gradle_script.py b/build/scripts/gen_test_apk_gradle_script.py
new file mode 100644
index 0000000000..b3a4f89e46
--- /dev/null
+++ b/build/scripts/gen_test_apk_gradle_script.py
@@ -0,0 +1,193 @@
+import argparse
+import os
+import tarfile
+import xml.etree.ElementTree as etree
+
+FLAT_DIRS_REPO_TEMPLATE='flatDir {{ dirs {dirs} }}\n'
+MAVEN_REPO_TEMPLATE='maven {{ url "{repo}" }}\n'
+KEYSTORE_TEMLATE='signingConfigs {{ debug {{ storeFile file("{keystore}") }} }}\n'
+
+TEST_APK_TEMPLATE = """\
+ext.jniLibsDirs = [
+    {jni_libs_dirs}
+]
+ext.resDirs = [
+    {res_dirs}
+]
+ext.javaDirs = [
+    {java_dirs}
+]
+ext.bundles = [
+    {bundles}
+]
+
+buildscript {{
+//    repositories {{
+//        jcenter()
+//    }}
+
+    repositories {{
+        {maven_repos}
+    }}
+
+    dependencies {{
+        classpath 'com.android.tools.build:gradle:3.5.3'
+    }}
+}}
+
+apply plugin: 'com.android.application'
+
+repositories {{
+//     maven {{
+//         url "http://maven.google.com/"
+//     }}
+//    maven {{
+//        url "http://artifactory.yandex.net/artifactory/public/"
+//    }}
+//    flatDir {{
+//        dirs System.env.PKG_ROOT + '/bundle'
+//    }}
+
+    {flat_dirs_repo}
+
+    {maven_repos}
+}}
+
+dependencies {{
+    for (bundle in bundles) {{
+        compile("$bundle")
+    }}
+}}
+
+android {{
+    {keystore}
+
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+
+    defaultConfig {{
+        minSdkVersion 21
+        targetSdkVersion 30
+        applicationId "{app_id}"
+    }}
+
+    sourceSets {{
+        main {{
+            manifest.srcFile 'Manifest.xml'
+            jniLibs.srcDirs = jniLibsDirs
+            res.srcDirs = resDirs
+            java.srcDirs = javaDirs
+        }}
+    }}
+
+    applicationVariants.all {{ variant ->
+        variant.outputs.each {{ output ->
+            def fileName = "$projectDir/output/{app_id}.apk"
+            output.outputFileName = new File(output.outputFile.parent, fileName).getName()
+        }}
+    }}
+
+    dependencies {{
+        implementation 'com.google.android.gms:play-services-location:21.0.1'
+        implementation 'com.google.android.gms:play-services-gcm:17.0.0'
+        implementation 'com.evernote:android-job:1.2.6'
+        implementation 'androidx.annotation:annotation:1.1.0'
+        implementation 'androidx.core:core:1.1.0'
+    }}
+}}
+"""
+
+
+def create_native_properties(output_dir, library_name):
+    native_properties_file = os.path.join(output_dir, 'native_library_name.xml')
+    resources = etree.Element('resources')
+    name = etree.SubElement(resources, 'item', dict(name='native_library_name', type='string'))
+    name.text = library_name
+    etree.ElementTree(resources).write(native_properties_file, xml_declaration=True, encoding='utf-8')
+
+
+def gen_build_script(args):
+    def wrap(items):
+        return ',\n    '.join('"{}"'.format(x) for x in items)
+
+    bundles = []
+    bundles_dirs = set(args.flat_repos)
+    for bundle in args.bundles:
+        dir_name, base_name = os.path.split(bundle)
+        assert(len(dir_name) > 0 and len(base_name) > 0)
+        name, ext = os.path.splitext(base_name)
+        assert(len(name) > 0 and ext == '.aar')
+        bundles_dirs.add(dir_name)
+        bundles.append('com.yandex:{}@aar'.format(name))
+
+    if len(bundles_dirs) > 0:
+        flat_dirs_repo = FLAT_DIRS_REPO_TEMPLATE.format(dirs=wrap(bundles_dirs))
+    else:
+        flat_dirs_repo = ''
+
+    maven_repos = ''.join(MAVEN_REPO_TEMPLATE.format(repo=repo) for repo in args.maven_repos)
+
+    if args.keystore:
+        keystore = KEYSTORE_TEMLATE.format(keystore=args.keystore)
+    else:
+        keystore = ''
+
+    return TEST_APK_TEMPLATE.format(
+        app_id=args.app_id,
+        jni_libs_dirs=wrap(args.jni_libs_dirs),
+        res_dirs=wrap(args.res_dirs),
+        java_dirs=wrap(args.java_dirs),
+        maven_repos=maven_repos,
+        bundles=wrap(bundles),
+        flat_dirs_repo=flat_dirs_repo,
+        keystore=keystore,
+    )
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--aars', nargs='*', default=[])
+    parser.add_argument('--app-id', required=True)
+    parser.add_argument('--assets-dirs', nargs='*', default=[])
+    parser.add_argument('--bundles', nargs='*', default=[])
+    parser.add_argument('--bundle-name', nargs='?', default=None)
+    parser.add_argument('--java-dirs', nargs='*', default=[])
+    parser.add_argument('--jni-libs-dirs', nargs='*', default=[])
+    parser.add_argument('--library-name', required=True)
+    parser.add_argument('--manifest', required=True)
+    parser.add_argument('--flat-repos', nargs='*', default=[])
+    parser.add_argument('--maven-repos', nargs='*', default=[])
+    parser.add_argument('--output-dir', required=True)
+    parser.add_argument('--peers', nargs='*', default=[])
+    parser.add_argument('--keystore', default=None)
+    parser.add_argument('--res-dirs', nargs='*', default=[])
+    args = parser.parse_args()
+
+    for index, jsrc in enumerate(filter(lambda x: x.endswith('.jsrc'), args.peers)):
+        jsrc_dir = os.path.join(args.output_dir, 'jsrc_{}'.format(str(index)))
+        os.makedirs(jsrc_dir)
+        with tarfile.open(jsrc, 'r') as tar:
+            tar.extractall(path=jsrc_dir)
+            args.java_dirs.append(jsrc_dir)
+
+    args.build_gradle = os.path.join(args.output_dir, 'build.gradle')
+    args.settings_gradle = os.path.join(args.output_dir, 'settings.gradle')
+    args.gradle_properties = os.path.join(args.output_dir, 'gradle.properties')
+
+    content = gen_build_script(args)
+    with open(args.build_gradle, 'w') as f:
+        f.write(content)
+
+    with open(args.gradle_properties, 'w') as f:
+        f.write('''android.enableJetifier=true
+        android.useAndroidX=true
+        org.gradle.jvmargs=-Xmx8192m -XX:MaxPermSize=512m''')
+
+    if args.bundle_name:
+        with open(args.settings_gradle, 'w') as f:
+            f.write('rootProject.name = "{}"'.format(args.bundle_name))
+
+    values_dir = os.path.join(args.output_dir, 'res', 'values')
+    os.makedirs(values_dir)
+    create_native_properties(values_dir, args.library_name)
diff --git a/build/scripts/gen_yql_python_udf.py b/build/scripts/gen_yql_python_udf.py
new file mode 100644
index 0000000000..13b5898117
--- /dev/null
+++ b/build/scripts/gen_yql_python_udf.py
@@ -0,0 +1,55 @@
+import sys
+
+TEMPLATE="""
+#include <yql/udfs/common/python/python_udf/python_udf.h>
+
+#include <ydb/library/yql/public/udf/udf_registrator.h>
+
+#if @WITH_LIBRA@
+#include <yql/udfs/quality/libra/module/module.h>
+#endif
+
+using namespace NKikimr::NUdf;
+
+#ifdef BUILD_UDF
+
+#if @WITH_LIBRA@
+LIBRA_MODULE(TLibraModule, "Libra@MODULE_NAME@");
+#endif
+
+extern "C" UDF_API void Register(IRegistrator& registrator, ui32 flags) {
+    RegisterYqlPythonUdf(registrator, flags, TStringBuf("@MODULE_NAME@"), TStringBuf("@PACKAGE_NAME@"), EPythonFlavor::@FLAVOR@);
+#if @WITH_LIBRA@
+    RegisterHelper<TLibraModule>(registrator);
+#endif
+}
+
+extern "C" UDF_API ui32 AbiVersion() {
+    return CurrentAbiVersion();
+}
+
+extern "C" UDF_API void SetBackTraceCallback(TBackTraceCallback callback) {
+    SetBackTraceCallbackImpl(callback);
+}
+
+#endif
+"""
+
+
+def main():
+    assert len(sys.argv) == 6
+    flavor, module_name, package_name, path, libra_flag = sys.argv[1:]
+    with open(path, 'w') as f:
+        f.write(
+            TEMPLATE
+            .strip()
+            .replace('@MODULE_NAME@', module_name)
+            .replace('@PACKAGE_NAME@', package_name)
+            .replace('@FLAVOR@', flavor)
+            .replace('@WITH_LIBRA@', libra_flag)
+        )
+        f.write('\n')
+
+
+if __name__ == "__main__":
+    main()
diff --git a/build/scripts/generate_mf.py b/build/scripts/generate_mf.py
new file mode 100644
index 0000000000..a44a969980
--- /dev/null
+++ b/build/scripts/generate_mf.py
@@ -0,0 +1,113 @@
+import json
+import logging
+import optparse
+import os
+import sys
+import io
+
+import process_command_files as pcf
+
+class BadMfError(Exception):
+    pass
+
+
+class GplNotAllowed(Exception):
+    pass
+
+
+def process_quotes(s):
+    for quote_char in '\'"':
+        if s.startswith(quote_char) and s.endswith(quote_char):
+            return s[1:-1]
+    return s
+
+
+def parse_args():
+    args = pcf.get_args(sys.argv[1:])
+    lics, peers, free_args, credits = [], [], [], []
+    current_list = free_args
+    for a in args:
+        if a == '-Ya,lics':
+            current_list = lics
+        elif a == '-Ya,peers':
+            current_list = peers
+        elif a == '-Ya,credits':
+            current_list = credits
+        elif a and a.startswith('-'):
+            current_list = free_args
+            current_list.append(a)
+        else:
+            current_list.append(a)
+
+    parser = optparse.OptionParser()
+    parser.add_option('--build-root')
+    parser.add_option('--module-name')
+    parser.add_option('-o', '--output')
+    parser.add_option('-c', '--credits-output')
+    parser.add_option('-t', '--type')
+    opts, _ = parser.parse_args(free_args)
+    return lics, peers, credits, opts,
+
+
+def generate_header(meta):
+    return '-' * 20 + meta.get('path', 'Unknown module') + '-' * 20
+
+
+def generate_mf():
+    lics, peers, credits, options = parse_args()
+
+    meta = {
+        'module_name': options.module_name,
+        'path': os.path.dirname(options.output),
+        'licenses': lics,
+        'dependencies': [],
+        'license_texts': ''
+    }
+
+    build_root = options.build_root
+    file_name = os.path.join(build_root, options.output)
+
+    if options.type != 'LIBRARY':
+        for rel_filename in peers:
+            with open(os.path.join(build_root, rel_filename + '.mf')) as peer_file:
+                peer_meta = json.load(peer_file)
+                meta['dependencies'].append(peer_meta)
+
+    if credits:
+        union_texts = []
+        for texts_file in credits:
+            with open(process_quotes(texts_file)) as f:
+                union_texts.append(f.read())
+        meta['license_texts'] = '\n\n'.join(union_texts)
+
+    if options.credits_output:
+        final_credits = []
+        if meta['license_texts']:
+            final_credits.append(generate_header(meta) + '\n' + meta['license_texts'])
+        for peer in peers:
+            candidate = os.path.join(build_root, peer + '.mf')
+            with open(candidate) as src:
+                data = json.loads(src.read())
+                texts = data.get('license_texts')
+                if texts:
+                    candidate_text = generate_header(data) + '\n' + texts
+                    if isinstance(candidate_text, unicode):
+                        candidate_text = candidate_text.encode('utf-8')
+                    final_credits.append(candidate_text)
+
+        with io.open(options.credits_output, 'w', encoding='utf-8') as f:
+            data = '\n\n'.join(final_credits)
+            if isinstance(data, str):
+                data = data.decode('utf-8')
+            f.write(data)
+
+    with open(file_name, 'w') as mf_file:
+        json.dump(meta, mf_file, indent=4)
+
+
+if __name__ == '__main__':
+    try:
+        generate_mf()
+    except Exception as e:
+        sys.stderr.write(str(e) + '\n')
+        sys.exit(1)
diff --git a/build/scripts/generate_pom.py b/build/scripts/generate_pom.py
new file mode 100644
index 0000000000..d91bce6249
--- /dev/null
+++ b/build/scripts/generate_pom.py
@@ -0,0 +1,336 @@
+from __future__ import print_function
+
+import sys
+import xml.etree.ElementTree as et
+import argparse
+import os
+import json
+import base64
+import re
+
+
+DEFAULT_YANDEX_GROUP_ID = 'ru.yandex'
+DEFAULT_NAMESPACE = 'http://maven.apache.org/POM/4.0.0'
+XSI_NAMESPACE = 'http://www.w3.org/2001/XMLSchema-instance'
+SCHEMA_LOCATION = 'http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd'
+MODEL_VERSION = '4.0.0'
+
+MAVEN_PLUGIN_GROUP_ID = 'org.apache.maven.plugins'
+MAVEN_PLUGIN_ARTIFACT_ID = 'maven-compiler-plugin'
+MAVEN_PLUGIN_VERSION = '3.3'
+JAVA_LANGUAGE_LEVEL = '1.8'
+
+MAVEN_BUILD_HELPER_GROUP_ID = 'org.codehaus.mojo'
+MAVEN_BUILD_HELPER_ARTIFACT_ID = 'build-helper-maven-plugin'
+MAVEN_BUILD_HELPER_VERSION = '1.9.1'
+
+MAVEN_EXEC_GROUP_ID = 'org.codehaus.mojo'
+MAVEN_EXEC_ARTIFACT_ID = 'exec-maven-plugin'
+MAVEN_EXEC_VERSION = '1.5.0'
+
+MAVEN_SUREFIRE_GROUP_ID = 'org.apache.maven.plugins'
+MAVEN_SUREFIRE_ARTIFACT_ID = 'maven-surefire-plugin'
+MAVEN_SUREFIRE_VERSION = '2.12.2'
+
+
+def target_from_contrib(target_path):
+    return target_path.startswith('contrib')
+
+
+def split_artifacts(s):
+    m = re.match('^([^:]*:[^:]*:[^:]*:[^:]*)(.*)$', s)
+    if not m or not m.groups():
+        return []
+    if not m.groups()[1].startswith('::'):
+        return [m.groups()[0]]
+    return [m.groups()[0]] + m.groups()[1].split('::')[1:]
+
+
+def parse_coord_file(target_coords):
+    deps = set()
+    excludes = set()
+    target = None
+
+    with open(target_coords, 'r') as f:
+        for ln in f:
+            ln = ln.strip('\n')
+            if ln.startswith('D='):
+                if target is None:
+                    target = ln[2:]
+                else:
+                    group, artifact = ln[2:].split(':')[0:2]
+                    deps.add('{}:{}'.format(group, artifact))
+            elif ln.startswith('E='):
+                group, artifact = ln[2:].split(':')[0:2]
+                excludes.add('{}:{}'.format(group, artifact))
+    return target, deps, excludes
+
+
+def applied_excludes(deps, excludes):
+    return sorted(list(deps & excludes))
+
+
+def build_pom_and_export_to_maven(**kwargs):
+    target_path = kwargs.get('target_path')
+    target = kwargs.get('target')
+    pom_path = kwargs.get('pom_path')
+    source_dirs = kwargs.get('source_dirs')
+    output_dir = kwargs.get('output_dir')
+    final_name = kwargs.get('final_name')
+    packaging = kwargs.get('packaging')
+    test_target_dependencies = kwargs.get('test_target_dependencies')
+    test_target_dependencies_exclude = kwargs.get('test_target_dependencies_exclude')
+    modules_path = kwargs.get('modules_path')
+    base64_prop_vars = kwargs.get('properties')
+    prop_vars = kwargs.get('property')
+    external_jars = kwargs.get('external_jars')
+    resources = kwargs.get('resources')
+    run_java_programs = [json.loads(base64.b64decode(i)) for i in kwargs.get('run_java_programs')]
+    test_source_dirs = kwargs.get('test_source_dirs')
+    test_resource_dirs = kwargs.get('test_resource_dirs')
+
+    from_coord_files = kwargs.get('from_coord_files')
+    deps_coords = kwargs.get('deps_coords')
+    target_coords = kwargs.get('target_coords')
+    if from_coord_files:
+        target, _, all_excludes = parse_coord_file(target_coords)
+        # TODO: ymake java -> jbuild java values format conversion must be removed
+        target = ':'.join(target.split(':')[:3])
+        target_dependencies = []
+        for dep in deps_coords:
+            dep_coord, dep_deps, _ = parse_coord_file(dep)
+            excluded = applied_excludes(dep_deps, all_excludes)
+            if len(excluded) > 0:
+                target_dependencies.append('{}::{}'.format(dep_coord, '::'.join(excluded)))
+            else:
+                target_dependencies.append(dep_coord)
+    else:
+        target_dependencies = kwargs.get('target_dependencies')
+
+    if kwargs.get('vcs_info') is not None:
+        with open(kwargs.get('vcs_info'), 'r') as vcs_json:
+            vcs_revision = json.load(vcs_json).get('ARCADIA_SOURCE_LAST_CHANGE')
+        target = target.format(vcs_revision=vcs_revision)
+        target_dependencies = [dep.format(vcs_revision=vcs_revision) for dep in target_dependencies]
+
+    modules = []
+
+    def _indent(elem, level=0):
+        ind = "\n" + level * "  "
+        if len(elem):
+            if not elem.text or not elem.text.strip():
+                elem.text = ind + "  "
+            if not elem.tail or not elem.tail.strip():
+                elem.tail = ind
+            for elem in elem:
+                _indent(elem, level + 1)
+            if not elem.tail or not elem.tail.strip():
+                elem.tail = ind
+        else:
+            if level and (not elem.tail or not elem.tail.strip()):
+                elem.tail = ind
+
+    project = et.Element(
+        '{}{}{}project'.format('{', DEFAULT_NAMESPACE, '}'),
+        attrib={'{}{}{}schemaLocation'.format('{', XSI_NAMESPACE, '}'): SCHEMA_LOCATION}
+    )
+
+    group_id, artifact_id, version = target.split(':')
+
+    et.SubElement(project, 'modelVersion').text = MODEL_VERSION
+    et.SubElement(project, 'groupId').text = group_id
+    et.SubElement(project, 'artifactId').text = artifact_id
+    et.SubElement(project, 'version').text = version
+    et.SubElement(project, 'packaging').text = packaging
+
+    properties = et.SubElement(project, 'properties')
+    et.SubElement(properties, 'project.build.sourceEncoding').text = 'UTF-8'
+
+    if base64_prop_vars:
+        for property, value in json.loads(base64.b64decode(base64_prop_vars)).items():
+            et.SubElement(properties, property).text = value
+    for rawprop in prop_vars:
+        property, sep, value = rawprop.partition('=')
+        if sep != '=':
+            print("Can't find propertyr name and property value in {}. No '=' symbol found".format(rawprop))
+            sys.exit(1)
+        et.SubElement(properties, property).text = value
+
+    if modules_path:
+        with open(modules_path) as f:
+            modules = [i.strip() for i in f if i.strip()]
+
+    if modules:
+        modules_el = et.SubElement(project, 'modules')
+        for module in modules:
+            et.SubElement(modules_el, 'module').text = module
+
+    build = et.SubElement(project, 'build')
+    if source_dirs:
+        et.SubElement(build, 'sourceDirectory').text = source_dirs[0]
+        source_dirs = source_dirs[1:]
+    if test_source_dirs:
+        et.SubElement(build, 'testSourceDirectory').text = test_source_dirs[0]
+        test_source_dirs = test_source_dirs[1:]
+    if output_dir:
+        et.SubElement(build, 'outputDirectory').text = output_dir
+    if final_name:
+        et.SubElement(build, 'finalName').text = final_name
+    if resources:
+        resource_element = et.SubElement(et.SubElement(build, 'resources'), 'resource')
+        et.SubElement(resource_element, 'directory').text = '${basedir}'
+        includes = et.SubElement(resource_element, 'includes')
+        for resource in resources:
+            et.SubElement(includes, 'include').text = resource
+    if test_resource_dirs:
+        test_resource_element = et.SubElement(build, 'testResources')
+        for test_resource_dir in test_resource_dirs:
+            et.SubElement(et.SubElement(test_resource_element, 'testResource'), 'directory').text = '${basedir}' + (('/' + test_resource_dir) if test_resource_dir != '.' else '')
+
+    plugins = et.SubElement(build, 'plugins')
+
+    if packaging != 'pom':
+        maven_plugin = et.SubElement(plugins, 'plugin')
+        et.SubElement(maven_plugin, 'groupId').text = MAVEN_PLUGIN_GROUP_ID
+        et.SubElement(maven_plugin, 'artifactId').text = MAVEN_PLUGIN_ARTIFACT_ID
+        et.SubElement(maven_plugin, 'version').text = MAVEN_PLUGIN_VERSION
+        configuration = et.SubElement(maven_plugin, 'configuration')
+        et.SubElement(configuration, 'source').text = JAVA_LANGUAGE_LEVEL
+        et.SubElement(configuration, 'target').text = JAVA_LANGUAGE_LEVEL
+
+    if source_dirs or external_jars or test_source_dirs:
+        build_helper_plugin = et.SubElement(plugins, 'plugin')
+        et.SubElement(build_helper_plugin, 'groupId').text = MAVEN_BUILD_HELPER_GROUP_ID
+        et.SubElement(build_helper_plugin, 'artifactId').text = MAVEN_BUILD_HELPER_ARTIFACT_ID
+        et.SubElement(build_helper_plugin, 'version').text = MAVEN_BUILD_HELPER_VERSION
+        executions = et.SubElement(build_helper_plugin, 'executions')
+        if source_dirs:
+            execution = et.SubElement(executions, 'execution')
+            et.SubElement(execution, 'id').text = 'add-source'
+            et.SubElement(execution, 'phase').text = 'generate-sources'
+            et.SubElement(et.SubElement(execution, 'goals'), 'goal').text = 'add-source'
+            sources = et.SubElement(et.SubElement(execution, 'configuration'), 'sources')
+            for source_dir in source_dirs:
+                et.SubElement(sources, 'source').text = source_dir
+        if external_jars:
+            execution = et.SubElement(executions, 'execution')
+            et.SubElement(execution, 'id').text = 'attach-artifacts'
+            et.SubElement(execution, 'phase').text = 'generate-sources'
+            et.SubElement(et.SubElement(execution, 'goals'), 'goal').text = 'attach-artifact'
+            artifacts = et.SubElement(et.SubElement(execution, 'configuration'), 'artifacts')
+            for external_jar in external_jars:
+                external_artifact = et.SubElement(artifacts, 'artifact')
+                et.SubElement(external_artifact, 'file').text = '${basedir}/' + external_jar
+                et.SubElement(external_artifact, 'type').text = 'jar'
+        if test_source_dirs:
+            execution = et.SubElement(executions, 'execution')
+            et.SubElement(execution, 'id').text = 'add-test-source'
+            et.SubElement(execution, 'phase').text = 'generate-test-sources'
+            et.SubElement(et.SubElement(execution, 'goals'), 'goal').text = 'add-test-source'
+            sources = et.SubElement(et.SubElement(execution, 'configuration'), 'sources')
+            for source_dir in source_dirs:
+                et.SubElement(sources, 'source').text = source_dir
+
+    if run_java_programs:
+        exec_plugin = et.SubElement(plugins, 'plugin')
+        et.SubElement(exec_plugin, 'groupId').text = MAVEN_EXEC_GROUP_ID
+        et.SubElement(exec_plugin, 'artifactId').text = MAVEN_EXEC_ARTIFACT_ID
+        et.SubElement(exec_plugin, 'version').text = MAVEN_EXEC_VERSION
+        jp_dependencies = et.SubElement(exec_plugin, 'dependencies')
+        executions = et.SubElement(exec_plugin, 'executions')
+        for java_program in run_java_programs:
+            execution = et.SubElement(executions, 'execution')
+            et.SubElement(execution, 'phase').text = 'generate-sources'
+            et.SubElement(et.SubElement(execution, 'goals'), 'goal').text = 'java'
+            jp_configuration = et.SubElement(execution, 'configuration')
+            main_cls, args = None, []
+            for word in java_program['cmd']:
+                if not main_cls and not word.startswith('-'):
+                    main_cls = word
+                else:
+                    args.append(word)
+            et.SubElement(jp_configuration, 'mainClass').text = main_cls
+            et.SubElement(jp_configuration, 'includePluginDependencies').text = 'true'
+            et.SubElement(jp_configuration, 'includeProjectDependencies').text = 'false'
+            if args:
+                jp_arguments = et.SubElement(jp_configuration, 'arguments')
+                for arg in args:
+                    et.SubElement(jp_arguments, 'argument').text = arg
+            if java_program['deps']:
+                for jp_dep in java_program['deps']:
+                    jp_dependency = et.SubElement(jp_dependencies, 'dependency')
+                    jp_g, jp_a, jp_v = jp_dep.split(':')
+                    et.SubElement(jp_dependency, 'groupId').text = jp_g
+                    et.SubElement(jp_dependency, 'artifactId').text = jp_a
+                    et.SubElement(jp_dependency, 'version').text = jp_v
+                    et.SubElement(jp_dependency, 'type').text = 'jar'
+
+    if target_dependencies + test_target_dependencies:
+        dependencies = et.SubElement(project, 'dependencies')
+        for target_dependency in target_dependencies + test_target_dependencies:
+            dependency = et.SubElement(dependencies, 'dependency')
+            dependency_info = split_artifacts(target_dependency)
+
+            group_id, artifact_id, version, classifier = dependency_info[0].split(':')
+
+            et.SubElement(dependency, 'groupId').text = group_id
+            et.SubElement(dependency, 'artifactId').text = artifact_id
+            et.SubElement(dependency, 'version').text = version
+            if classifier:
+                et.SubElement(dependency, 'classifier').text = classifier
+            if target_dependency in test_target_dependencies:
+                et.SubElement(dependency, 'scope').text = 'test'
+
+            if len(dependency_info) > 1:
+                exclusions = et.SubElement(dependency, 'exclusions')
+                for exclude in dependency_info[1:]:
+                    group_id, artifact_id = exclude.split(':')
+                    exclusion_el = et.SubElement(exclusions, 'exclusion')
+                    et.SubElement(exclusion_el, 'groupId').text = group_id
+                    et.SubElement(exclusion_el, 'artifactId').text = artifact_id
+
+    if test_target_dependencies_exclude:
+        surefire_plugin = et.SubElement(plugins, 'plugin')
+        et.SubElement(surefire_plugin, 'groupId').text = MAVEN_SUREFIRE_GROUP_ID
+        et.SubElement(surefire_plugin, 'artifactId').text = MAVEN_SUREFIRE_ARTIFACT_ID
+        et.SubElement(surefire_plugin, 'version').text = MAVEN_SUREFIRE_VERSION
+        classpath_excludes = et.SubElement(et.SubElement(surefire_plugin, 'configuration'), 'classpathDependencyExcludes')
+        for classpath_exclude in test_target_dependencies_exclude:
+            et.SubElement(classpath_excludes, 'classpathDependencyExclude').text = classpath_exclude
+
+    et.register_namespace('', DEFAULT_NAMESPACE)
+    et.register_namespace('xsi', XSI_NAMESPACE)
+
+    _indent(project)
+
+    et.ElementTree(project).write(pom_path)
+    sys.stderr.write("[MAVEN EXPORT] Generated {} file for target {}\n".format(os.path.basename(pom_path), target_path))
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--from-coord-files', action='store_true')
+    parser.add_argument('--deps-coords', action='append', default=[])
+    parser.add_argument('--target-coords', action='store')
+    parser.add_argument('--target-path', action='store', default='')
+    parser.add_argument('--target', action='store')
+    parser.add_argument('--pom-path', action='store')
+    parser.add_argument('--source-dirs', action='append', default=[])
+    parser.add_argument('--external-jars', action='append', default=[])
+    parser.add_argument('--resources', action='append', default=[])
+    parser.add_argument('--run-java-programs', action='append', default=[])
+    parser.add_argument('--output-dir')
+    parser.add_argument('--final-name')
+    parser.add_argument('--packaging', default='jar')
+    parser.add_argument('--target-dependencies', action='append', default=[])
+    parser.add_argument('--test-target-dependencies', action='append', default=[])
+    parser.add_argument('--test-target-dependencies-exclude', action='append', default=[])
+    parser.add_argument('--modules-path', action='store')
+    parser.add_argument('--properties')
+    parser.add_argument('--property', action='append', default=[])
+    parser.add_argument('--test-source-dirs', action='append', default=[])
+    parser.add_argument('--test-resource-dirs', action='append', default=[])
+    parser.add_argument('--vcs-info', action='store', default=None)
+    args = parser.parse_args()
+
+    build_pom_and_export_to_maven(**vars(args))
diff --git a/build/scripts/go_fake_include/go_asm.h b/build/scripts/go_fake_include/go_asm.h
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/build/scripts/go_fake_include/go_asm.h
diff --git a/build/scripts/go_proto_wrapper.py b/build/scripts/go_proto_wrapper.py
new file mode 100644
index 0000000000..159bd42c93
--- /dev/null
+++ b/build/scripts/go_proto_wrapper.py
@@ -0,0 +1,81 @@
+from __future__ import absolute_import, unicode_literals
+import os
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+
+
+OUT_DIR_FLAG_PATTERN = re.compile(r'^(--go(([-_]\w+))*_out=)')
+
+
+def move_tree(src_root, dst_root):
+    for root, _, files in os.walk(src_root):
+        rel_dir = os.path.relpath(root, src_root)
+        dst_dir = os.path.join(dst_root, rel_dir)
+        if not os.path.exists(dst_dir):
+            os.mkdir(dst_dir)
+        for file in files:
+            os.rename(os.path.join(root, file), os.path.join(dst_dir, file))
+
+
+def main(arcadia_prefix, contrib_prefix, proto_namespace, args):
+    out_dir_orig = None
+    out_dir_temp = None
+    for i in range(len(args)):
+        m = re.match(OUT_DIR_FLAG_PATTERN, args[i])
+        if m:
+            out_dir_flag = m.group(1)
+            index = max(len(out_dir_flag), args[i].rfind(':')+1)
+            out_dir = args[i][index:]
+            if out_dir_orig:
+                assert out_dir_orig == out_dir, 'Output directories do not match: [{}] and [{}]'.format(out_dir_orig, out_dir)
+            else:
+                out_dir_orig = out_dir
+                out_dir_temp = tempfile.mkdtemp(dir=out_dir_orig)
+            args[i] = (args[i][:index] + out_dir_temp).replace('|', ',')
+    assert out_dir_temp is not None, 'Output directory is not specified'
+
+    try:
+        subprocess.check_output(args, stdin=None, stderr=subprocess.STDOUT)
+    except subprocess.CalledProcessError as e:
+        sys.stderr.write('{} returned non-zero exit code {}.\n{}\n'.format(' '.join(e.cmd), e.returncode, e.output.decode('utf-8')))
+        return e.returncode
+
+    # All Arcadia GO projects should have 'a.yandex-team.ru/' namespace prefix.
+    # If the namespace doesn't start with 'a.yandex-team.ru/' prefix then this
+    # project is from vendor directory under the root of Arcadia.
+    out_dir_src = os.path.normpath(os.path.join(out_dir_temp, arcadia_prefix, proto_namespace))
+    out_dir_dst = out_dir_orig
+    is_from_contrib = False
+    if not os.path.isdir(out_dir_src):
+        is_from_contrib = True
+        out_dir_src = out_dir_temp
+        out_dir_dst = os.path.join(out_dir_orig, contrib_prefix)
+
+    if not os.path.exists(out_dir_src) or is_from_contrib:
+        protos = [x for x in args if x.endswith('.proto')]
+        if not is_from_contrib or not all(x.startswith(contrib_prefix) for x in protos):
+            proto_list = []
+            option_re = re.compile(r'^\s*option\s+go_package\s*=\s*')
+            for arg in protos:
+                with open(arg, 'r') as f:
+                    if not any([re.match(option_re, line) for line in f]):
+                        proto_list.append(arg)
+            if proto_list:
+                sys.stderr.write(
+                    '\nError: Option go_package is not specified in the following proto files: {}\n'
+                    '\nNOTE! You can find detailed description of how to properly set go_package '
+                    'option here https://wiki.yandex-team.ru/devrules/Go/#protobufigrpc'.format(', '.join(proto_list)))
+                return 1
+
+    move_tree(out_dir_src, out_dir_dst)
+
+    shutil.rmtree(out_dir_temp)
+
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main(os.path.normpath(sys.argv[1]), os.path.normpath(sys.argv[2]), os.path.normpath(sys.argv[3]), sys.argv[4:]))
diff --git a/build/scripts/go_tool.py b/build/scripts/go_tool.py
new file mode 100644
index 0000000000..e57a12cc0f
--- /dev/null
+++ b/build/scripts/go_tool.py
@@ -0,0 +1,891 @@
+import argparse
+import copy
+import json
+import os
+import re
+import shutil
+import subprocess
+import sys
+import tarfile
+import tempfile
+import threading
+import traceback
+from contextlib import contextmanager
+from functools import reduce
+
+import process_command_files as pcf
+import process_whole_archive_option as pwa
+
+arc_project_prefix = 'a.yandex-team.ru/'
+# FIXME: make version-independent
+std_lib_prefix = 'contrib/go/_std_1.19/src/'
+vendor_prefix = 'vendor/'
+vet_info_ext = '.vet.out'
+vet_report_ext = '.vet.txt'
+
+FIXED_CGO1_SUFFIX='.fixed.cgo1.go'
+
+COMPILE_OPTIMIZATION_FLAGS=('-N',)
+
+
+def get_trimpath_args(args):
+    return ['-trimpath', args.trimpath] if args.trimpath else []
+
+
+def preprocess_cgo1(src_path, dst_path, source_root):
+    with open(src_path, 'r') as f:
+        content = f.read()
+        content = content.replace('__ARCADIA_SOURCE_ROOT_PREFIX__', source_root)
+    with open(dst_path, 'w') as f:
+        f.write(content)
+
+
+def preprocess_args(args):
+    # Temporary work around for noauto
+    if args.cgo_srcs and len(args.cgo_srcs) > 0:
+        cgo_srcs_set = set(args.cgo_srcs)
+        args.srcs = [x for x in args.srcs if x not in cgo_srcs_set]
+
+    args.pkg_root = os.path.join(args.toolchain_root, 'pkg')
+    toolchain_tool_root = os.path.join(args.pkg_root, 'tool', '{}_{}'.format(args.host_os, args.host_arch))
+    args.go_compile = os.path.join(toolchain_tool_root, 'compile')
+    args.go_cgo = os.path.join(toolchain_tool_root, 'cgo')
+    args.go_link = os.path.join(toolchain_tool_root, 'link')
+    args.go_asm = os.path.join(toolchain_tool_root, 'asm')
+    args.go_pack = os.path.join(toolchain_tool_root, 'pack')
+    args.go_vet = os.path.join(toolchain_tool_root, 'vet') if args.vet is True else args.vet
+    args.output = os.path.normpath(args.output)
+    args.vet_report_output = vet_report_output_name(args.output, args.vet_report_ext)
+    args.trimpath = None
+    if args.debug_root_map:
+        roots = {'build': args.build_root, 'source': args.source_root, 'tools': args.tools_root}
+        replaces = []
+        for root in args.debug_root_map.split(';'):
+            src, dst = root.split('=', 1)
+            assert src in roots
+            replaces.append('{}=>{}'.format(roots[src], dst))
+            del roots[src]
+        assert len(replaces) > 0
+        args.trimpath = ';'.join(replaces)
+    args.build_root = os.path.normpath(args.build_root)
+    args.build_root_dir = args.build_root + os.path.sep
+    args.source_root = os.path.normpath(args.source_root)
+    args.source_root_dir = args.source_root + os.path.sep
+    args.output_root = os.path.normpath(args.output_root)
+    args.import_map = {}
+    args.module_map = {}
+    if args.cgo_peers:
+        args.cgo_peers = [x for x in args.cgo_peers if not x.endswith('.fake.pkg')]
+
+    srcs = []
+    for f in args.srcs:
+        if f.endswith('.gosrc'):
+            with tarfile.open(f, 'r') as tar:
+                srcs.extend(os.path.join(args.output_root, src) for src in tar.getnames())
+                tar.extractall(path=args.output_root)
+        else:
+            srcs.append(f)
+    args.srcs = srcs
+
+    assert args.mode == 'test' or args.test_srcs is None and args.xtest_srcs is None
+    # add lexical oreder by basename for go sources
+    args.srcs.sort(key=lambda x: os.path.basename(x))
+    if args.test_srcs:
+        args.srcs += sorted(args.test_srcs, key=lambda x: os.path.basename(x))
+        del args.test_srcs
+    if args.xtest_srcs:
+        args.xtest_srcs.sort(key=lambda x: os.path.basename(x))
+
+    # compute root relative module dir path
+    assert args.output is None or args.output_root == os.path.dirname(args.output)
+    assert args.output_root.startswith(args.build_root_dir)
+    args.module_path = args.output_root[len(args.build_root_dir):]
+    args.source_module_dir = os.path.join(args.source_root, args.test_import_path or args.module_path) + os.path.sep
+    assert len(args.module_path) > 0
+    args.import_path, args.is_std = get_import_path(args.module_path)
+
+    assert args.asmhdr is None or args.word == 'go'
+
+    srcs = []
+    for f in args.srcs:
+        if f.endswith(FIXED_CGO1_SUFFIX) and f.startswith(args.build_root_dir):
+            path = os.path.join(args.output_root, '{}.cgo1.go'.format(os.path.basename(f[:-len(FIXED_CGO1_SUFFIX)])))
+            srcs.append(path)
+            preprocess_cgo1(f, path, args.source_root)
+        else:
+            srcs.append(f)
+    args.srcs = srcs
+
+    if args.extldflags:
+        args.extldflags = pwa.ProcessWholeArchiveOption(args.targ_os).construct_cmd(args.extldflags)
+
+    classify_srcs(args.srcs, args)
+
+
+def compare_versions(version1, version2):
+    def last_index(version):
+        index = version.find('beta')
+        return len(version) if index < 0 else index
+
+    v1 = tuple(x.zfill(8) for x in version1[:last_index(version1)].split('.'))
+    v2 = tuple(x.zfill(8) for x in version2[:last_index(version2)].split('.'))
+    if v1 == v2:
+        return 0
+    return 1 if v1 < v2 else -1
+
+
+def get_symlink_or_copyfile():
+    os_symlink = getattr(os, 'symlink', None)
+    if os_symlink is None or os.name == 'nt':
+        os_symlink = shutil.copyfile
+    return os_symlink
+
+
+def copy_args(args):
+    return copy.copy(args)
+
+
+def get_vendor_index(import_path):
+    index = import_path.rfind('/' + vendor_prefix)
+    if index < 0:
+        index = 0 if import_path.startswith(vendor_prefix) else index
+    else:
+        index = index + 1
+    return index
+
+
+def get_import_path(module_path):
+    assert len(module_path) > 0
+    import_path = module_path.replace('\\', '/')
+    is_std_module = import_path.startswith(std_lib_prefix)
+    if is_std_module:
+        import_path = import_path[len(std_lib_prefix):]
+    elif import_path.startswith(vendor_prefix):
+        import_path = import_path[len(vendor_prefix):]
+    else:
+        import_path = arc_project_prefix + import_path
+    assert len(import_path) > 0
+    return import_path, is_std_module
+
+
+def call(cmd, cwd, env=None):
+    # sys.stderr.write('{}\n'.format(' '.join(cmd)))
+    return subprocess.check_output(cmd, stdin=None, stderr=subprocess.STDOUT, cwd=cwd, env=env, text=True)
+
+
+def classify_srcs(srcs, args):
+    args.go_srcs = [x for x in srcs if x.endswith('.go')]
+    args.asm_srcs = [x for x in srcs if x.endswith('.s')]
+    args.objects = [x for x in srcs if x.endswith('.o') or x.endswith('.obj')]
+    args.symabis = [x for x in srcs if x.endswith('.symabis')]
+    args.sysos = [x for x in srcs if x.endswith('.syso')]
+
+
+def get_import_config_info(peers, gen_importmap, import_map={}, module_map={}):
+    info = {'importmap': [], 'packagefile': [], 'standard': {}}
+    if gen_importmap:
+        for key, value in import_map.items():
+            info['importmap'].append((key, value))
+    for peer in peers:
+        peer_import_path, is_std = get_import_path(os.path.dirname(peer))
+        if gen_importmap:
+            index = get_vendor_index(peer_import_path)
+            if index >= 0:
+                index += len(vendor_prefix)
+                info['importmap'].append((peer_import_path[index:], peer_import_path))
+        info['packagefile'].append((peer_import_path, os.path.join(args.build_root, peer)))
+        if is_std:
+            info['standard'][peer_import_path] = True
+    for key, value in module_map.items():
+        info['packagefile'].append((key, value))
+    return info
+
+
+def create_import_config(peers, gen_importmap, import_map={}, module_map={}):
+    lines = []
+    info = get_import_config_info(peers, gen_importmap, import_map, module_map)
+    for key in ('importmap', 'packagefile'):
+        for item in info[key]:
+            lines.append('{} {}={}'.format(key, *item))
+    if len(lines) > 0:
+        lines.append('')
+        content = '\n'.join(lines)
+        # sys.stderr.writelines('{}\n'.format(l) for l in lines)
+        with tempfile.NamedTemporaryFile(delete=False) as f:
+            f.write(content.encode('UTF-8'))
+            return f.name
+    return None
+
+
+def create_embed_config(args):
+    data = {
+        'Patterns': {},
+        'Files': {},
+    }
+    for info in args.embed:
+        pattern = info[0]
+        if pattern.endswith('/**/*'):
+            pattern = pattern[:-3]
+        files = {os.path.relpath(f, args.source_module_dir).replace('\\', '/'): f for f in info[1:]}
+        data['Patterns'][pattern] = list(files.keys())
+        data['Files'].update(files)
+    # sys.stderr.write('{}\n'.format(json.dumps(data, indent=4)))
+    with tempfile.NamedTemporaryFile(delete=False, suffix='.embedcfg') as f:
+        f.write(json.dumps(data).encode('UTF-8'))
+        return f.name
+
+
+def vet_info_output_name(path, ext=None):
+    return '{}{}'.format(path, ext or vet_info_ext)
+
+
+def vet_report_output_name(path, ext=None):
+    return '{}{}'.format(path, ext or vet_report_ext)
+
+
+def get_source_path(args):
+    return args.test_import_path or args.module_path
+
+
+def gen_vet_info(args):
+    import_path = args.real_import_path if hasattr(args, 'real_import_path') else args.import_path
+    info = get_import_config_info(args.peers, True, args.import_map, args.module_map)
+
+    import_map = dict(info['importmap'])
+    # FIXME(snermolaev): it seems that adding import map for 'fake' package
+    #                    does't make any harm (it needs to be revised later)
+    import_map['unsafe'] = 'unsafe'
+
+    for (key, _) in info['packagefile']:
+        if key not in import_map:
+            import_map[key] = key
+
+    data = {
+        'ID': import_path,
+        'Compiler': 'gc',
+        'Dir': os.path.join(args.source_root, get_source_path(args)),
+        'ImportPath': import_path,
+        'GoFiles': [x for x in args.go_srcs if x.endswith('.go')],
+        'NonGoFiles': [x for x in args.go_srcs if not x.endswith('.go')],
+        'ImportMap': import_map,
+        'PackageFile': dict(info['packagefile']),
+        'Standard': dict(info['standard']),
+        'PackageVetx': dict((key, vet_info_output_name(value)) for key, value in info['packagefile']),
+        'VetxOnly': False,
+        'VetxOutput': vet_info_output_name(args.output),
+        'SucceedOnTypecheckFailure': False
+    }
+    # sys.stderr.write('{}\n'.format(json.dumps(data, indent=4)))
+    return data
+
+
+def create_vet_config(args, info):
+    with tempfile.NamedTemporaryFile(delete=False, suffix='.cfg') as f:
+        f.write(json.dumps(info).encode('UTF-8'))
+        return f.name
+
+
+def decode_vet_report(json_report):
+    report = ''
+    if json_report:
+        try:
+            full_diags = json.JSONDecoder().decode(json_report.decode('UTF-8'))
+        except ValueError:
+            report = json_report
+        else:
+            messages = []
+            for _, module_diags in full_diags.items():
+                for _, type_diags in module_diags.items():
+                    for diag in type_diags:
+                        messages.append('{}: {}'.format(diag['posn'], json.dumps(diag['message'])))
+            report = '\n'.join(messages)
+
+    return report
+
+
+def dump_vet_report(args, report):
+    if report:
+        report = report.replace(args.build_root, '$B')
+        report = report.replace(args.source_root, '$S')
+    with open(args.vet_report_output, 'w') as f:
+        f.write(report)
+
+
+def read_vet_report(args):
+    assert args
+    report = ''
+    if os.path.exists(args.vet_report_output):
+        with open(args.vet_report_output, 'r') as f:
+            report += f.read()
+    return report
+
+
+def dump_vet_report_for_tests(args, *test_args_list):
+    dump_vet_report(args, reduce(lambda x, y: x + read_vet_report(y), [_f for _f in test_args_list if _f], ''))
+
+
+def do_vet(args):
+    assert args.vet
+    info = gen_vet_info(args)
+    vet_config = create_vet_config(args, info)
+    cmd = [args.go_vet, '-json']
+    if args.vet_flags:
+        cmd.extend(args.vet_flags)
+    cmd.append(vet_config)
+    # sys.stderr.write('>>>> [{}]\n'.format(' '.join(cmd)))
+    p_vet = subprocess.Popen(cmd, stdin=None, stderr=subprocess.PIPE, stdout=subprocess.PIPE, cwd=args.source_root)
+    vet_out, vet_err = p_vet.communicate()
+    report = decode_vet_report(vet_out) if vet_out else ''
+    dump_vet_report(args, report)
+    if p_vet.returncode:
+        raise subprocess.CalledProcessError(returncode=p_vet.returncode, cmd=cmd, output=vet_err)
+
+
+def _do_compile_go(args):
+    import_path, is_std_module = args.import_path, args.is_std
+    cmd = [
+        args.go_compile,
+        '-o',
+        args.output,
+        '-p',
+        import_path if import_path != "unsafe" else "",
+        '-D',
+        '""',
+    ]
+    if args.lang:
+        cmd.append('-lang=go{}'.format(args.lang))
+    cmd.extend(get_trimpath_args(args))
+    compiling_runtime = False
+    if is_std_module:
+        cmd.append('-std')
+        if import_path in ('runtime', 'internal/abi', 'internal/bytealg', 'internal/cpu') or import_path.startswith('runtime/internal/'):
+            cmd.append('-+')
+            compiling_runtime = True
+    import_config_name = create_import_config(args.peers, True, args.import_map, args.module_map)
+    if import_config_name:
+        cmd += ['-importcfg', import_config_name]
+    else:
+        if import_path == 'unsafe' or len(args.objects) > 0 or args.asmhdr:
+            pass
+        else:
+            cmd.append('-complete')
+    # if compare_versions('1.16', args.goversion) >= 0:
+    if args.embed:
+        embed_config_name = create_embed_config(args)
+        cmd.extend(['-embedcfg', embed_config_name])
+    if args.asmhdr:
+        cmd += ['-asmhdr', args.asmhdr]
+    # Use .symabis (starting from 1.12 version)
+    if args.symabis:
+        cmd += ['-symabis'] + args.symabis
+    # If 1.12 <= version < 1.13 we have to pass -allabis for 'runtime' and 'runtime/internal/atomic'
+    # if compare_versions('1.13', args.goversion) >= 0:
+    #     pass
+    # elif import_path in ('runtime', 'runtime/internal/atomic'):
+    #     cmd.append('-allabis')
+    compile_workers = '4'
+    if args.compile_flags:
+        if compiling_runtime:
+            cmd.extend(x for x in args.compile_flags if x not in COMPILE_OPTIMIZATION_FLAGS)
+        else:
+            cmd.extend(args.compile_flags)
+        if any([x in ('-race', '-shared') for x in args.compile_flags]):
+            compile_workers = '1'
+    cmd += ['-pack', '-c={}'.format(compile_workers)]
+    cmd += args.go_srcs
+    call(cmd, args.build_root)
+
+
+class VetThread(threading.Thread):
+
+    def __init__(self, target, args):
+        super(VetThread, self).__init__(target=target, args=args)
+        self.exc_info = None
+
+    def run(self):
+        try:
+            super(VetThread, self).run()
+        except:
+            self.exc_info = sys.exc_info()
+
+    def join_with_exception(self, reraise_exception):
+        self.join()
+        if reraise_exception and self.exc_info:
+            raise self.exc_info[0].with_traceback(self.exc_info[1], self.exc_info[2])
+
+
+def do_compile_go(args):
+    raise_exception_from_vet = False
+    if args.vet:
+        run_vet = VetThread(target=do_vet, args=(args,))
+        run_vet.start()
+    try:
+        _do_compile_go(args)
+        raise_exception_from_vet = True
+    finally:
+        if args.vet:
+            run_vet.join_with_exception(raise_exception_from_vet)
+
+
+def do_compile_asm(args):
+    def need_compiling_runtime(import_path):
+        return import_path in ('runtime', 'reflect', 'syscall') or \
+            import_path.startswith('runtime/internal/') or \
+            compare_versions('1.17', args.goversion) >= 0 and import_path == 'internal/bytealg'
+
+    assert(len(args.srcs) == 1 and len(args.asm_srcs) == 1)
+    cmd = [args.go_asm]
+    cmd += get_trimpath_args(args)
+    cmd += ['-I', args.output_root, '-I', os.path.join(args.pkg_root, 'include')]
+    cmd += ['-D', 'GOOS_' + args.targ_os, '-D', 'GOARCH_' + args.targ_arch, '-o', args.output]
+
+    # if compare_versions('1.16', args.goversion) >= 0:
+    cmd += ['-p', args.import_path]
+    if need_compiling_runtime(args.import_path):
+        cmd += ['-compiling-runtime']
+
+    if args.asm_flags:
+        cmd += args.asm_flags
+    cmd += args.asm_srcs
+    call(cmd, args.build_root)
+
+
+def do_link_lib(args):
+    if len(args.asm_srcs) > 0:
+        asmargs = copy_args(args)
+        asmargs.asmhdr = os.path.join(asmargs.output_root, 'go_asm.h')
+        do_compile_go(asmargs)
+        for src in asmargs.asm_srcs:
+            asmargs.srcs = [src]
+            asmargs.asm_srcs = [src]
+            asmargs.output = os.path.join(asmargs.output_root, os.path.basename(src) + '.o')
+            do_compile_asm(asmargs)
+            args.objects.append(asmargs.output)
+    else:
+        do_compile_go(args)
+    if args.objects or args.sysos:
+        cmd = [args.go_pack, 'r', args.output] + args.objects + args.sysos
+        call(cmd, args.build_root)
+
+
+def do_link_exe(args):
+    assert args.extld is not None
+    assert args.non_local_peers is not None
+    compile_args = copy_args(args)
+    compile_args.output = os.path.join(args.output_root, 'main.a')
+    compile_args.real_import_path = compile_args.import_path
+    compile_args.import_path = 'main'
+
+    if args.vcs and os.path.isfile(compile_args.vcs):
+        build_info = os.path.join('library', 'go', 'core', 'buildinfo')
+        if any([x.startswith(build_info) for x in compile_args.peers]):
+            compile_args.go_srcs.append(compile_args.vcs)
+
+    do_link_lib(compile_args)
+    cmd = [args.go_link, '-o', args.output]
+    import_config_name = create_import_config(args.peers + args.non_local_peers, False, args.import_map, args.module_map)
+    if import_config_name:
+        cmd += ['-importcfg', import_config_name]
+    if args.link_flags:
+        cmd += args.link_flags
+
+    if args.buildmode:
+        cmd.append('-buildmode={}'.format(args.buildmode))
+    elif args.mode in ('exe', 'test'):
+        cmd.append('-buildmode=exe')
+    elif args.mode == 'dll':
+        cmd.append('-buildmode=c-shared')
+    else:
+        assert False, 'Unexpected mode: {}'.format(args.mode)
+    cmd.append('-extld={}'.format(args.extld))
+
+    extldflags = []
+    if args.extldflags is not None:
+        filter_musl = bool
+        if args.musl:
+            cmd.append('-linkmode=external')
+            extldflags.append('-static')
+            filter_musl = lambda x: x not in ('-lc', '-ldl', '-lm', '-lpthread', '-lrt')
+        extldflags += [x for x in args.extldflags if filter_musl(x)]
+    cgo_peers = []
+    if args.cgo_peers is not None and len(args.cgo_peers) > 0:
+        is_group = args.targ_os == 'linux'
+        if is_group:
+            cgo_peers.append('-Wl,--start-group')
+        cgo_peers.extend(args.cgo_peers)
+        if is_group:
+            cgo_peers.append('-Wl,--end-group')
+    try:
+        index = extldflags.index('--cgo-peers')
+        extldflags = extldflags[:index] + cgo_peers + extldflags[index+1:]
+    except ValueError:
+        extldflags.extend(cgo_peers)
+    if len(extldflags) > 0:
+        cmd.append('-extldflags={}'.format(' '.join(extldflags)))
+    cmd.append(compile_args.output)
+    call(cmd, args.build_root)
+
+
+def gen_cover_info(args):
+    lines = []
+    lines.extend([
+        """
+var (
+    coverCounters = make(map[string][]uint32)
+    coverBlocks = make(map[string][]testing.CoverBlock)
+)
+        """,
+        'func init() {',
+    ])
+    for var, file in (x.split(':') for x in args.cover_info):
+        lines.append('    coverRegisterFile("{file}", _cover0.{var}.Count[:], _cover0.{var}.Pos[:], _cover0.{var}.NumStmt[:])'.format(file=file, var=var))
+    lines.extend([
+        '}',
+        """
+func coverRegisterFile(fileName string, counter []uint32, pos []uint32, numStmts []uint16) {
+    if 3*len(counter) != len(pos) || len(counter) != len(numStmts) {
+        panic("coverage: mismatched sizes")
+    }
+    if coverCounters[fileName] != nil {
+        // Already registered.
+        return
+    }
+    coverCounters[fileName] = counter
+    block := make([]testing.CoverBlock, len(counter))
+    for i := range counter {
+        block[i] = testing.CoverBlock{
+            Line0: pos[3*i+0],
+            Col0: uint16(pos[3*i+2]),
+            Line1: pos[3*i+1],
+            Col1: uint16(pos[3*i+2]>>16),
+            Stmts: numStmts[i],
+        }
+    }
+    coverBlocks[fileName] = block
+}
+        """,
+    ])
+    return lines
+
+
+def filter_out_skip_tests(tests, skip_tests):
+    skip_set = set()
+    star_skip_set = set()
+    for t in skip_tests:
+        work_set = star_skip_set if '*' in t else skip_set
+        work_set.add(t)
+
+    re_star_tests = None
+    if len(star_skip_set) > 0:
+        re_star_tests = re.compile(re.sub(r'(\*)+', r'.\1', '^({})$'.format('|'.join(star_skip_set))))
+
+    return [x for x in tests if not (x in skip_tests or re_star_tests and re_star_tests.match(x))]
+
+
+@contextmanager
+def create_strip_symlink():
+    # This function creates symlink of llvm-strip as strip for golink needs.
+    # We believe that cc-binaries path is a first element in PATH enviroment variable.
+    tmpdir = None
+    if os.getenv("CC") == "clang":
+        tmpdir = tempfile.mkdtemp()
+        cc_path = os.getenv("PATH").split(os.pathsep)[0]
+        os.environ["PATH"] += os.pathsep + tmpdir
+        src_strip_path = os.path.join(cc_path, 'llvm-strip')
+        dst_strip_path = os.path.join(tmpdir, 'strip')
+        os.symlink(src_strip_path, dst_strip_path)
+    try:
+        yield
+    finally:
+        if tmpdir:
+            shutil.rmtree(tmpdir)
+
+
+def gen_test_main(args, test_lib_args, xtest_lib_args):
+    assert args and (test_lib_args or xtest_lib_args)
+    test_miner = args.test_miner
+    test_module_path = test_lib_args.import_path if test_lib_args else xtest_lib_args.import_path
+    is_cover = args.cover_info and len(args.cover_info) > 0
+
+    # Prepare GOPATH
+    # $BINDIR
+    #    |- __go__
+    #        |- src
+    #        |- pkg
+    #            |- ${TARGET_OS}_${TARGET_ARCH}
+    go_path_root = os.path.join(args.output_root, '__go__')
+    test_src_dir = os.path.join(go_path_root, 'src')
+    target_os_arch = '_'.join([args.targ_os, args.targ_arch])
+    test_pkg_dir = os.path.join(go_path_root, 'pkg', target_os_arch, os.path.dirname(test_module_path))
+    os.makedirs(test_pkg_dir)
+
+    my_env = os.environ.copy()
+    my_env['GOROOT'] = ''
+    my_env['GOPATH'] = go_path_root
+    my_env['GOARCH'] = args.targ_arch
+    my_env['GOOS'] = args.targ_os
+
+    tests = []
+    xtests = []
+    os_symlink = get_symlink_or_copyfile()
+
+    # Get the list of "internal" tests
+    if test_lib_args:
+        os.makedirs(os.path.join(test_src_dir, test_module_path))
+        os_symlink(test_lib_args.output, os.path.join(test_pkg_dir, os.path.basename(test_module_path) + '.a'))
+        cmd = [test_miner, '-benchmarks', '-tests', test_module_path]
+        tests = [x for x in (call(cmd, test_lib_args.output_root, my_env) or '').strip().split('\n') if len(x) > 0]
+        if args.skip_tests:
+            tests = filter_out_skip_tests(tests, args.skip_tests)
+    test_main_found = '#TestMain' in tests
+
+    # Get the list of "external" tests
+    if xtest_lib_args:
+        xtest_module_path = xtest_lib_args.import_path
+        os.makedirs(os.path.join(test_src_dir, xtest_module_path))
+        os_symlink(xtest_lib_args.output, os.path.join(test_pkg_dir, os.path.basename(xtest_module_path) + '.a'))
+        cmd = [test_miner, '-benchmarks', '-tests', xtest_module_path]
+        xtests = [x for x in (call(cmd, xtest_lib_args.output_root, my_env) or '').strip().split('\n') if len(x) > 0]
+        if args.skip_tests:
+            xtests = filter_out_skip_tests(xtests, args.skip_tests)
+    xtest_main_found = '#TestMain' in xtests
+
+    test_main_package = None
+    if test_main_found and xtest_main_found:
+        assert False, 'multiple definition of TestMain'
+    elif test_main_found:
+        test_main_package = '_test'
+    elif xtest_main_found:
+        test_main_package = '_xtest'
+
+    shutil.rmtree(go_path_root)
+
+    lines = ['package main', '', 'import (']
+    if test_main_package is None:
+        lines.append('    "os"')
+    lines.extend(['    "testing"', '    "testing/internal/testdeps"'])
+
+    if len(tests) > 0:
+        lines.append('    _test "{}"'.format(test_module_path))
+    elif test_lib_args:
+        lines.append('    _ "{}"'.format(test_module_path))
+
+    if len(xtests) > 0:
+        lines.append('    _xtest "{}"'.format(xtest_module_path))
+    elif xtest_lib_args:
+        lines.append('    _ "{}"'.format(xtest_module_path))
+
+    if is_cover:
+        lines.append('    _cover0 "{}"'.format(test_module_path))
+    lines.extend([')', ''])
+
+    if compare_versions('1.18', args.goversion) < 0:
+        kinds = ['Test', 'Benchmark', 'Example']
+    else:
+        kinds = ['Test', 'Benchmark', 'FuzzTarget', 'Example']
+
+    var_names = []
+    for kind in kinds:
+        var_name = '{}s'.format(kind.lower())
+        var_names.append(var_name)
+        lines.append('var {} = []testing.Internal{}{{'.format(var_name, kind))
+        for test in [x for x in tests if x.startswith(kind)]:
+            lines.append('    {{"{test}", _test.{test}}},'.format(test=test))
+        for test in [x for x in xtests if x.startswith(kind)]:
+            lines.append('    {{"{test}", _xtest.{test}}},'.format(test=test))
+        lines.extend(['}', ''])
+
+    if is_cover:
+        lines.extend(gen_cover_info(args))
+
+    lines.append('func main() {')
+    if is_cover:
+        lines.extend([
+            '    testing.RegisterCover(testing.Cover{',
+            '        Mode: "set",',
+            '        Counters: coverCounters,',
+            '        Blocks: coverBlocks,',
+            '        CoveredPackages: "",',
+            '    })',
+        ])
+    lines.extend([
+        '    m := testing.MainStart(testdeps.TestDeps{{}}, {})'.format(', '.join(var_names)),
+        '',
+    ])
+
+    if test_main_package:
+        lines.append('    {}.TestMain(m)'.format(test_main_package))
+    else:
+        lines.append('    os.Exit(m.Run())')
+    lines.extend(['}', ''])
+
+    content = '\n'.join(lines)
+    # sys.stderr.write('{}\n'.format(content))
+    return content
+
+
+def do_link_test(args):
+    assert args.srcs or args.xtest_srcs
+    assert args.test_miner is not None
+
+    test_module_path = get_source_path(args)
+    test_import_path, _ = get_import_path(test_module_path)
+
+    test_lib_args = copy_args(args) if args.srcs else None
+    xtest_lib_args = copy_args(args) if args.xtest_srcs else None
+    if xtest_lib_args is not None:
+        xtest_lib_args.embed = args.embed_xtest if args.embed_xtest else None
+
+    ydx_file_name = None
+    xtest_ydx_file_name = None
+    need_append_ydx = test_lib_args and xtest_lib_args and args.ydx_file and args.vet_flags
+    if need_append_ydx:
+        def find_ydx_file_name(name, flags):
+            for i, elem in enumerate(flags):
+                if elem.endswith(name):
+                    return (i, elem)
+            assert False, 'Unreachable code'
+
+        idx, ydx_file_name = find_ydx_file_name(xtest_lib_args.ydx_file, xtest_lib_args.vet_flags)
+        xtest_ydx_file_name = '{}_xtest'.format(ydx_file_name)
+        xtest_lib_args.vet_flags = copy.copy(xtest_lib_args.vet_flags)
+        xtest_lib_args.vet_flags[idx] = xtest_ydx_file_name
+
+    if test_lib_args:
+        test_lib_args.output = os.path.join(args.output_root, 'test.a')
+        test_lib_args.vet_report_output = vet_report_output_name(test_lib_args.output)
+        test_lib_args.module_path = test_module_path
+        test_lib_args.import_path = test_import_path
+        do_link_lib(test_lib_args)
+
+    if xtest_lib_args:
+        xtest_lib_args.srcs = xtest_lib_args.xtest_srcs
+        classify_srcs(xtest_lib_args.srcs, xtest_lib_args)
+        xtest_lib_args.output = os.path.join(args.output_root, 'xtest.a')
+        xtest_lib_args.vet_report_output = vet_report_output_name(xtest_lib_args.output)
+        xtest_lib_args.module_path = test_module_path + '_test'
+        xtest_lib_args.import_path = test_import_path + '_test'
+        if test_lib_args:
+            xtest_lib_args.module_map[test_import_path] = test_lib_args.output
+        need_append_ydx = args.ydx_file and args.srcs and args.vet_flags
+        do_link_lib(xtest_lib_args)
+
+    if need_append_ydx:
+        with open(os.path.join(args.build_root, ydx_file_name), 'ab') as dst_file:
+            with open(os.path.join(args.build_root, xtest_ydx_file_name), 'rb') as src_file:
+                dst_file.write(src_file.read())
+
+    test_main_content = gen_test_main(args, test_lib_args, xtest_lib_args)
+    test_main_name = os.path.join(args.output_root, '_test_main.go')
+    with open(test_main_name, "w") as f:
+        f.write(test_main_content)
+    test_args = copy_args(args)
+    test_args.embed = None
+    test_args.srcs = [test_main_name]
+    if test_args.test_import_path is None:
+        # it seems that we can do it unconditionally, but this kind
+        # of mangling doesn't really looks good to me and we leave it
+        # for pure GO_TEST module
+        test_args.module_path = test_args.module_path + '___test_main__'
+        test_args.import_path = test_args.import_path + '___test_main__'
+    classify_srcs(test_args.srcs, test_args)
+    if test_lib_args:
+        test_args.module_map[test_lib_args.import_path] = test_lib_args.output
+    if xtest_lib_args:
+        test_args.module_map[xtest_lib_args.import_path] = xtest_lib_args.output
+
+    if args.vet:
+        dump_vet_report_for_tests(test_args, test_lib_args, xtest_lib_args)
+    test_args.vet = False
+
+    do_link_exe(test_args)
+
+
+if __name__ == '__main__':
+    args = pcf.get_args(sys.argv[1:])
+
+    parser = argparse.ArgumentParser(prefix_chars='+')
+    parser.add_argument('++mode', choices=['dll', 'exe', 'lib', 'test'], required=True)
+    parser.add_argument('++buildmode', choices=['c-shared', 'exe', 'pie'])
+    parser.add_argument('++srcs', nargs='*', required=True)
+    parser.add_argument('++cgo-srcs', nargs='*')
+    parser.add_argument('++test_srcs', nargs='*')
+    parser.add_argument('++xtest_srcs', nargs='*')
+    parser.add_argument('++cover_info', nargs='*')
+    parser.add_argument('++output', nargs='?', default=None)
+    parser.add_argument('++source-root', default=None)
+    parser.add_argument('++build-root', required=True)
+    parser.add_argument('++tools-root', default=None)
+    parser.add_argument('++output-root', required=True)
+    parser.add_argument('++toolchain-root', required=True)
+    parser.add_argument('++host-os', choices=['linux', 'darwin', 'windows'], required=True)
+    parser.add_argument('++host-arch', choices=['amd64', 'arm64'], required=True)
+    parser.add_argument('++targ-os', choices=['linux', 'darwin', 'windows'], required=True)
+    parser.add_argument('++targ-arch', choices=['amd64', 'x86', 'arm64'], required=True)
+    parser.add_argument('++peers', nargs='*')
+    parser.add_argument('++non-local-peers', nargs='*')
+    parser.add_argument('++cgo-peers', nargs='*')
+    parser.add_argument('++asmhdr', nargs='?', default=None)
+    parser.add_argument('++test-import-path', nargs='?')
+    parser.add_argument('++test-miner', nargs='?')
+    parser.add_argument('++arc-project-prefix', nargs='?', default=arc_project_prefix)
+    parser.add_argument('++std-lib-prefix', nargs='?', default=std_lib_prefix)
+    parser.add_argument('++vendor-prefix', nargs='?', default=vendor_prefix)
+    parser.add_argument('++extld', nargs='?', default=None)
+    parser.add_argument('++extldflags', nargs='+', default=None)
+    parser.add_argument('++goversion', required=True)
+    parser.add_argument('++lang', nargs='?', default=None)
+    parser.add_argument('++asm-flags', nargs='*')
+    parser.add_argument('++compile-flags', nargs='*')
+    parser.add_argument('++link-flags', nargs='*')
+    parser.add_argument('++vcs', nargs='?', default=None)
+    parser.add_argument('++vet', nargs='?', const=True, default=False)
+    parser.add_argument('++vet-flags', nargs='*', default=None)
+    parser.add_argument('++vet-info-ext', default=vet_info_ext)
+    parser.add_argument('++vet-report-ext', default=vet_report_ext)
+    parser.add_argument('++musl', action='store_true')
+    parser.add_argument('++skip-tests', nargs='*', default=None)
+    parser.add_argument('++ydx-file', default='')
+    parser.add_argument('++debug-root-map', default=None)
+    parser.add_argument('++embed', action='append', nargs='*')
+    parser.add_argument('++embed_xtest', action='append', nargs='*')
+    args = parser.parse_args(args)
+
+    arc_project_prefix = args.arc_project_prefix
+    std_lib_prefix = args.std_lib_prefix
+    vendor_prefix = args.vendor_prefix
+    vet_info_ext = args.vet_info_ext
+    vet_report_ext = args.vet_report_ext
+
+    preprocess_args(args)
+
+    try:
+        os.unlink(args.output)
+    except OSError:
+        pass
+
+    # We are going to support only 'lib', 'exe' and 'cgo' build modes currently
+    # and as a result we are going to generate only one build node per module
+    # (or program)
+    dispatch = {
+        'exe': do_link_exe,
+        'dll': do_link_exe,
+        'lib': do_link_lib,
+        'test': do_link_test
+    }
+
+    exit_code = 1
+    try:
+        with create_strip_symlink():
+            dispatch[args.mode](args)
+        exit_code = 0
+    except KeyError:
+        sys.stderr.write('Unknown build mode [{}]...\n'.format(args.mode))
+    except subprocess.CalledProcessError as e:
+        sys.stderr.write('{} returned non-zero exit code {}.\n{}\n'.format(' '.join(e.cmd), e.returncode, e.output))
+        exit_code = e.returncode
+    except AssertionError as e:
+        traceback.print_exc(file=sys.stderr)
+    except Exception as e:
+        sys.stderr.write('Unhandled exception [{}]...\n'.format(str(e)))
+    sys.exit(exit_code)
diff --git a/build/scripts/ios_wrapper.py b/build/scripts/ios_wrapper.py
new file mode 100644
index 0000000000..d3aa48387a
--- /dev/null
+++ b/build/scripts/ios_wrapper.py
@@ -0,0 +1,180 @@
+import errno
+import json
+import os
+import shutil
+import subprocess
+import sys
+import tarfile
+import plistlib
+
+
+def ensure_dir(path):
+    try:
+        os.makedirs(path)
+    except OSError as e:
+        if e.errno != errno.EEXIST or not os.path.isdir(path):
+            raise
+
+
+def just_do_it(args):
+    if not args:
+        raise Exception('Not enough args!')
+    parts = [[]]
+    for arg in args:
+        if arg == '__DELIM__':
+            parts.append([])
+        else:
+            parts[-1].append(arg)
+    if len(parts) != 3 or len(parts[0]) != 5:
+        raise Exception('Bad call')
+    bin_name, ibtool_path, main_out, app_name, module_dir = parts[0]
+    bin_name = os.path.basename(bin_name)
+    inputs, storyboard_user_flags = parts[1:]
+    plists, storyboards, signs, nibs, resources, signed_resources, plist_jsons, strings = [], [], [], [], [], [], [], []
+    for i in inputs:
+        if i.endswith('.plist') or i.endswith('.partial_plist'):
+            plists.append(i)
+        elif i.endswith('.compiled_storyboard_tar'):
+            storyboards.append(i)
+        elif i.endswith('.xcent'):
+            signs.append(i)
+        elif i.endswith('.nib'):
+            nibs.append(i)
+        elif i.endswith('.resource_tar'):
+            resources.append(i)
+        elif i.endswith('.signed_resource_tar'):
+            signed_resources.append(i)
+        elif i.endswith('.plist_json'):
+            plist_jsons.append(i)
+        elif i.endswith('.strings_tar'):
+            strings.append(i)
+        else:
+            print >> sys.stderr, 'Unknown input:', i, 'ignoring'
+    if not plists:
+        raise Exception("Can't find plist files")
+    if not plists[0].endswith('.plist'):
+        print >> sys.stderr, "Main plist file can be defined incorretly"
+    if not storyboards:
+        print >> sys.stderr, "Storyboards list are empty"
+    if len(signs) > 1:
+        raise Exception("Too many .xcent files")
+    app_dir = os.path.join(module_dir, app_name + '.app')
+    ensure_dir(app_dir)
+    copy_nibs(nibs, module_dir, app_dir)
+    replaced_parameters = {
+        'DEVELOPMENT_LANGUAGE': 'en',
+        'EXECUTABLE_NAME': bin_name,
+        'PRODUCT_BUNDLE_IDENTIFIER': 'Yandex.' + app_name,
+        'PRODUCT_NAME': app_name,
+    }
+    replaced_templates = {}
+    for plist_json in plist_jsons:
+        with open(plist_json) as jsonfile:
+            for k, v in json.loads(jsonfile.read()).items():
+                replaced_parameters[k] = v
+    for k, v in replaced_parameters.items():
+        replaced_templates['$(' + k + ')'] = v
+        replaced_templates['${' + k + '}'] = v
+    make_main_plist(plists, os.path.join(app_dir, 'Info.plist'), replaced_templates)
+    link_storyboards(ibtool_path, storyboards, app_name, app_dir, storyboard_user_flags)
+    if resources:
+        extract_resources(resources, app_dir)
+    if signed_resources:
+        extract_resources(signed_resources, app_dir, sign=True)
+    if strings:
+        extract_resources(strings, app_dir, strings=True)
+    if not signs:
+        sign_file = os.path.join(module_dir, app_name + '.xcent')
+        with open(sign_file, 'w') as f:
+            f.write('''<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+        <key>com.apple.security.get-task-allow</key>
+        <true/>
+</dict>
+</plist>
+            ''')
+    else:
+        sign_file = signs[0]
+    sign_application(sign_file, app_dir)
+    make_archive(app_dir, main_out)
+
+
+def is_exe(fpath):
+    return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+
+def copy_nibs(nibs, module_dir, app_dir):
+    for nib in nibs:
+        dst = os.path.join(app_dir, os.path.relpath(nib, module_dir))
+        ensure_dir(os.path.dirname(dst))
+        shutil.copyfile(nib, dst)
+
+
+def make_main_plist(inputs, out, replaced_parameters):
+    united_data = {}
+    for i in inputs:
+        united_data.update(plistlib.readPlist(i))
+
+    def scan_n_replace(root):
+        if not isinstance(root, dict):
+            raise Exception('Invalid state')
+        for k in root:
+            if isinstance(root[k], list):
+                for i in xrange(len(root[k])):
+                    if isinstance(root[k][i], dict):
+                        scan_n_replace(root[k][i])
+                    elif root[k][i] in replaced_parameters:
+                        root[k][i] = replaced_parameters[root[k][i]]
+            elif isinstance(root[k], dict):
+                scan_n_replace(root[k])
+            else:
+                if root[k] in replaced_parameters:
+                    root[k] = replaced_parameters[root[k]]
+    scan_n_replace(united_data)
+    plistlib.writePlist(united_data, out)
+    subprocess.check_call(['/usr/bin/plutil', '-convert', 'binary1', out])
+
+
+def link_storyboards(ibtool, archives, app_name, app_dir, flags):
+    unpacked = []
+    for arc in archives:
+        unpacked.append(os.path.splitext(arc)[0] + 'c')
+        ensure_dir(unpacked[-1])
+        with tarfile.open(arc) as a:
+            a.extractall(path=unpacked[-1])
+    flags += [
+        '--module', app_name,
+        '--link', app_dir,
+    ]
+    subprocess.check_call([ibtool] + flags +
+                          ['--errors', '--warnings', '--notices', '--output-format', 'human-readable-text'] +
+                          unpacked)
+
+
+def sign_application(xcent, app_dir):
+    subprocess.check_call(['/usr/bin/codesign', '--force', '--sign', '-', '--entitlements', xcent, '--timestamp=none', app_dir])
+
+
+def extract_resources(resources, app_dir, strings=False, sign=False):
+    for res in resources:
+        with tarfile.open(res) as tf:
+            for tfinfo in tf:
+                tf.extract(tfinfo.name, app_dir)
+                if strings:
+                    subprocess.check_call(['/usr/bin/plutil', '-convert', 'binary1', os.path.join(app_dir, tfinfo.name)])
+                if sign:
+                    subprocess.check_call(['/usr/bin/codesign', '--force', '--sign', '-', os.path.join(app_dir, tfinfo.name)])
+
+
+def make_archive(app_dir, output):
+    with tarfile.open(output, "w") as tar_handle:
+        for root, _, files in os.walk(app_dir):
+            for f in files:
+                tar_handle.add(os.path.join(root, f), arcname=os.path.join(os.path.basename(app_dir),
+                                                                           os.path.relpath(os.path.join(root, f), app_dir)))
+
+
+if __name__ == '__main__':
+    just_do_it(sys.argv[1:])
diff --git a/build/scripts/java_pack_to_file.py b/build/scripts/java_pack_to_file.py
new file mode 100644
index 0000000000..c8ab7c311b
--- /dev/null
+++ b/build/scripts/java_pack_to_file.py
@@ -0,0 +1,43 @@
+import os
+import re
+import optparse
+
+JAVA_PACKAGE_REGEX = re.compile(r'^\s*package\s+(.*?);', flags=re.MULTILINE | re.DOTALL)
+KOTLIN_PACKAGE_REGEX = re.compile(r'^\s*package\s+(.*?)^', flags=re.MULTILINE | re.DOTALL)
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.add_option('-o', '--output')
+    parser.add_option('-a', '--source-root', dest='source_root')
+    return parser.parse_args()
+
+
+def get_package_name(filename):
+    with open(filename) as afile:
+        content = afile.read()
+        if filename.endswith(".kt"):
+            match = KOTLIN_PACKAGE_REGEX.search(content)
+            if match:
+                return match.group(1).strip().replace('.', '/')
+        else:
+            match = JAVA_PACKAGE_REGEX.search(content)
+            if match:
+                return match.group(1).replace('\n\t ', '').replace('.', '/')
+    return ''
+
+
+def write_coverage_sources(output, srcroot, files):
+    with open(output, 'w') as afile:
+        for filename in files:
+            pname = get_package_name(os.path.join(srcroot, filename))
+            afile.write(os.path.join(pname, os.path.basename(filename)) + ':' + filename + '\n')
+
+
+def main():
+    opts, files = parse_args()
+    write_coverage_sources(opts.output, opts.source_root, files)
+
+
+if __name__ == '__main__':
+    exit(main())
diff --git a/build/scripts/jni_swig.py b/build/scripts/jni_swig.py
new file mode 100644
index 0000000000..4b2220430b
--- /dev/null
+++ b/build/scripts/jni_swig.py
@@ -0,0 +1,46 @@
+import argparse
+import subprocess
+import re
+import os
+import tarfile
+
+def parse_args():
+    parser = argparse.ArgumentParser(description='Wrapper script to invoke swig.')
+    parser.add_argument('--swig', help='path to the swig executable')
+    parser.add_argument('--default-module', type=str, help='swig -module argument value for inputs without %module statement')
+    parser.add_argument('--package-by-file', help='path to file which dir must be converted to swig -package argument')
+    parser.add_argument('--jsrc', help='jsrc output archive filename')
+    parser.add_argument('--src', help='input .swg file path')
+    parser.add_argument('--out-header', help='header file which must exist even if it was not generated by swig')
+    parser.add_argument('args', nargs="*", help='regular swig arguments')
+
+    return parser.parse_args()
+
+
+def path2pkg(path):
+    return path.replace('/', '.').replace('-', '_')
+
+
+def main(args):
+    package = path2pkg(os.path.dirname(args.package_by_file))
+    outdir = None
+    if args.jsrc:
+        outdir = package.replace('.', '/')
+        outdir_abs = os.path.join(os.path.dirname(args.jsrc), outdir)
+        if not os.path.exists(outdir_abs):
+            os.makedirs(outdir_abs)
+    cmd = [args.swig, '-c++', '-java', '-package', package] + (['-outdir', outdir_abs] if outdir is not None else []) + args.args
+    if '-module' not in args.args and args.default_module:
+        with open(args.src, 'r') as f:
+            if not re.search(r'(?m)^%module\b', f.read()):
+                cmd += ['-module', args.default_module]
+    subprocess.check_call(cmd + [args.src])
+    if args.out_header and not os.path.exists(args.out_header):
+        open(args.out_header, 'w').close()
+    if args.jsrc:
+        with tarfile.open(args.jsrc, 'a') as tf:
+            tf.add(outdir_abs, arcname=outdir)
+
+
+if __name__ == '__main__':
+    main(parse_args())
diff --git a/build/scripts/kt_copy.py b/build/scripts/kt_copy.py
new file mode 100644
index 0000000000..f833c24ef4
--- /dev/null
+++ b/build/scripts/kt_copy.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+import sys
+
+if __name__ == '__main__':
+    source = sys.argv[1]
+    destination = sys.argv[2]
+    source_root = sys.argv[3]
+    build_root = sys.argv[4]
+    with open(source, 'r') as afile:
+        src_content = afile.read()
+    src_content = src_content.replace(source_root + '/', "")
+    result_srcs = ""
+    for line in src_content.split("\n"):
+        if not line.startswith(build_root):
+            result_srcs += line + "\n"
+    with open(destination, 'w') as afile:
+        afile.write(result_srcs)
diff --git a/build/scripts/link_asrc.py b/build/scripts/link_asrc.py
new file mode 100644
index 0000000000..eec5fe09a8
--- /dev/null
+++ b/build/scripts/link_asrc.py
@@ -0,0 +1,84 @@
+import argparse
+import itertools
+import os
+import tarfile
+
+
+DELIM_JAVA = '__DELIM_JAVA__'
+DELIM_RES = '__DELIM_RES__'
+DELIM_ASSETS = '__DELIM_ASSETS__'
+DELIM_AIDL = '__DELIM_AIDL__'
+
+DELIMS = (
+    DELIM_JAVA,
+    DELIM_RES,
+    DELIM_ASSETS,
+    DELIM_AIDL,
+)
+
+DESTS = {
+    DELIM_JAVA: 'src',
+    DELIM_RES: 'res',
+    DELIM_ASSETS: 'assets',
+    DELIM_AIDL: 'aidl',
+}
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--asrcs', nargs='*')
+    parser.add_argument('--input', nargs='*')
+    parser.add_argument('--jsrcs', nargs='*')
+    parser.add_argument('--output', required=True)
+    parser.add_argument('--work', required=True)
+
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+
+    files = []
+    parts = []
+
+    if args.input and len(args.input) > 0:
+        for x in args.input:
+            if x in DELIMS:
+                assert(len(parts) == 0 or len(parts[-1]) > 1)
+                parts.append([x])
+            else:
+                assert(len(parts) > 0)
+                parts[-1].append(x)
+        assert(len(parts[-1]) > 1)
+
+    if args.jsrcs and len(args.jsrcs):
+        src_dir = os.path.join(args.work, DESTS[DELIM_JAVA])
+        os.makedirs(src_dir)
+
+        for jsrc in filter(lambda x: x.endswith('.jsrc'), args.jsrcs):
+            with tarfile.open(jsrc, 'r') as tar:
+                names = tar.getnames()
+                if names and len(names) > 0:
+                    parts.append([DELIM_JAVA, src_dir])
+                    parts[-1].extend(itertools.imap(lambda x: os.path.join(src_dir, x), names))
+                    tar.extractall(path=src_dir)
+
+    if args.asrcs and len(args.asrcs):
+        for asrc in filter(lambda x: x.endswith('.asrc') and os.path.exists(x), args.asrcs):
+            with tarfile.open(asrc, 'r') as tar:
+                files.extend(tar.getnames())
+                tar.extractall(path=args.work)
+
+    with tarfile.open(args.output, 'w') as out:
+        for part in parts:
+            dest = DESTS[part[0]]
+            prefix = part[1]
+            for f in part[2:]:
+                out.add(f, arcname=os.path.join(dest, os.path.relpath(f, prefix)))
+
+        for f in files:
+            out.add(os.path.join(args.work, f), arcname=f)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/link_dyn_lib.py b/build/scripts/link_dyn_lib.py
new file mode 100644
index 0000000000..00215dfcae
--- /dev/null
+++ b/build/scripts/link_dyn_lib.py
@@ -0,0 +1,353 @@
+import sys
+import os
+import subprocess
+import tempfile
+import collections
+import optparse
+import pipes
+
+from process_whole_archive_option import ProcessWholeArchiveOption
+
+
+def shlex_join(cmd):
+    # equivalent to shlex.join() in python 3
+    return ' '.join(
+        pipes.quote(part)
+        for part in cmd
+    )
+
+
+def parse_export_file(p):
+    with open(p, 'r') as f:
+        for l in f:
+            l = l.strip()
+
+            if l and '#' not in l:
+                words = l.split()
+                if len(words) == 2 and words[0] == 'linux_version':
+                    yield {'linux_version': words[1]}
+                elif len(words) == 2:
+                    yield {'lang': words[0], 'sym': words[1]}
+                elif len(words) == 1:
+                    yield {'lang': 'C', 'sym': words[0]}
+                else:
+                    raise Exception('unsupported exports line: ' + l)
+
+
+def to_c(sym):
+    symbols = collections.deque(sym.split('::'))
+    c_prefixes = [  # demangle prefixes for c++ symbols
+        '_ZN',      # namespace
+        '_ZTIN',    # typeinfo for
+        '_ZTSN',    # typeinfo name for
+        '_ZTTN',    # VTT for
+        '_ZTVN',    # vtable for
+        '_ZNK',     # const methods
+    ]
+    c_sym = ''
+    while symbols:
+        s = symbols.popleft()
+        if s == '*':
+            c_sym += '*'
+            break
+        if '*' in s and len(s) > 1:
+            raise Exception('Unsupported format, cannot guess length of symbol: ' + s)
+        c_sym += str(len(s)) + s
+    if symbols:
+        raise Exception('Unsupported format: ' + sym)
+    if c_sym[-1] != '*':
+        c_sym += 'E*'
+    return ['{prefix}{sym}'.format(prefix=prefix, sym=c_sym) for prefix in c_prefixes]
+
+
+def fix_darwin_param(ex):
+    for item in ex:
+        if item.get('linux_version'):
+            continue
+
+        if item['lang'] == 'C':
+            yield '-Wl,-exported_symbol,_' + item['sym']
+        elif item['lang'] == 'C++':
+            for sym in to_c(item['sym']):
+                yield '-Wl,-exported_symbol,_' + sym
+        else:
+            raise Exception('unsupported lang: ' + item['lang'])
+
+
+def fix_gnu_param(arch, ex):
+    d = collections.defaultdict(list)
+    version = None
+    for item in ex:
+        if item.get('linux_version'):
+            if not version:
+                version = item.get('linux_version')
+            else:
+                raise Exception('More than one linux_version defined')
+        elif item['lang'] == 'C++':
+            d['C'].extend(to_c(item['sym']))
+        else:
+            d[item['lang']].append(item['sym'])
+
+    with tempfile.NamedTemporaryFile(mode='wt', delete=False) as f:
+        if version:
+            f.write('{} {{\nglobal:\n'.format(version))
+        else:
+            f.write('{\nglobal:\n')
+
+        for k, v in d.items():
+            f.write('    extern "' + k + '" {\n')
+
+            for x in v:
+                f.write('        ' + x + ';\n')
+
+            f.write('    };\n')
+
+        f.write('local: *;\n};\n')
+
+        ret = ['-Wl,--version-script=' + f.name]
+
+        if arch == 'ANDROID':
+            ret += ['-Wl,--export-dynamic']
+
+        return ret
+
+
+def fix_windows_param(ex):
+    with tempfile.NamedTemporaryFile(delete=False) as def_file:
+        exports = []
+        for item in ex:
+            if item.get('lang') == 'C':
+                exports.append(item.get('sym'))
+        def_file.write('EXPORTS\n')
+        for export in exports:
+            def_file.write('    {}\n'.format(export))
+        return ['/DEF:{}'.format(def_file.name)]
+
+
+MUSL_LIBS = '-lc', '-lcrypt', '-ldl', '-lm', '-lpthread', '-lrt', '-lutil'
+
+CUDA_LIBRARIES = {
+    '-lcublas_static': '-lcublas',
+    '-lcublasLt_static': '-lcublasLt',
+    '-lcudart_static': '-lcudart',
+    '-lcudnn_static': '-lcudnn',
+    '-lcufft_static_nocallback': '-lcufft',
+    '-lcurand_static': '-lcurand',
+    '-lcusolver_static': '-lcusolver',
+    '-lcusparse_static': '-lcusparse',
+    '-lmyelin_compiler_static': '-lmyelin',
+    '-lmyelin_executor_static': '-lnvcaffe_parser',
+    '-lmyelin_pattern_library_static': '',
+    '-lmyelin_pattern_runtime_static': '',
+    '-lnvinfer_static': '-lnvinfer',
+    '-lnvinfer_plugin_static': '-lnvinfer_plugin',
+    '-lnvonnxparser_static': '-lnvonnxparser',
+    '-lnvparsers_static': '-lnvparsers'
+}
+
+
+def fix_cmd(arch, c):
+    if arch == 'WINDOWS':
+        prefix = '/DEF:'
+        f = fix_windows_param
+    else:
+        prefix = '-Wl,--version-script='
+        if arch in ('DARWIN', 'IOS', 'IOSSIM'):
+            f = fix_darwin_param
+        else:
+            f = lambda x: fix_gnu_param(arch, x)
+
+    def do_fix(p):
+        if p.startswith(prefix) and p.endswith('.exports'):
+            fname = p[len(prefix):]
+
+            return list(f(list(parse_export_file(fname))))
+
+        if p.endswith('.supp'):
+            return []
+
+        if p.endswith('.pkg.fake'):
+            return []
+
+        return [p]
+
+    return sum((do_fix(x) for x in c), [])
+
+
+def fix_cmd_for_musl(cmd):
+    flags = []
+    for flag in cmd:
+        if flag not in MUSL_LIBS:
+            flags.append(flag)
+    return flags
+
+
+def fix_cmd_for_dynamic_cuda(cmd):
+    flags = []
+    for flag in cmd:
+        if flag in CUDA_LIBRARIES:
+            flags.append(CUDA_LIBRARIES[flag])
+        else:
+            flags.append(flag)
+    return flags
+
+
+def fix_blas_resolving(cmd):
+    # Intel mkl comes as a precompiled static library and thus can not be recompiled with sanitizer runtime instrumentation.
+    # That's why we prefer to use cblas instead of Intel mkl as a drop-in replacement under sanitizers.
+    # But if the library has dependencies on mkl and cblas simultaneously, it will get a linking error.
+    # Hence we assume that it's probably compiling without sanitizers and we can easily remove cblas to prevent multiple definitions of the same symbol at link time.
+    for arg in cmd:
+        if arg.startswith('contrib/libs') and arg.endswith('mkl-lp64.a'):
+            return [arg for arg in cmd if not arg.endswith('libcontrib-libs-cblas.a')]
+    return cmd
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.disable_interspersed_args()
+    parser.add_option('--arch')
+    parser.add_option('--target')
+    parser.add_option('--soname')
+    parser.add_option('--fix-elf')
+    parser.add_option('--linker-output')
+    parser.add_option('--musl', action='store_true')
+    parser.add_option('--dynamic-cuda', action='store_true')
+    parser.add_option('--whole-archive-peers', action='append')
+    parser.add_option('--whole-archive-libs', action='append')
+    parser.add_option('--custom-step')
+    parser.add_option('--python')
+    return parser.parse_args()
+
+
+if __name__ == '__main__':
+    opts, args = parse_args()
+
+    assert opts.arch
+    assert opts.target
+
+    cmd = fix_blas_resolving(args)
+    cmd = fix_cmd(opts.arch, cmd)
+
+    if opts.musl:
+        cmd = fix_cmd_for_musl(cmd)
+    if opts.dynamic_cuda:
+        cmd = fix_cmd_for_dynamic_cuda(cmd)
+
+    cmd = ProcessWholeArchiveOption(opts.arch, opts.whole_archive_peers, opts.whole_archive_libs).construct_cmd(cmd)
+
+    if opts.custom_step:
+        assert opts.python
+        subprocess.check_call([opts.python] + [opts.custom_step] + cmd)
+
+    if opts.linker_output:
+        stdout = open(opts.linker_output, 'w')
+    else:
+        stdout = sys.stdout
+
+    proc = subprocess.Popen(cmd, shell=False, stderr=sys.stderr, stdout=stdout)
+    proc.communicate()
+
+    if proc.returncode:
+        print >>sys.stderr, 'linker has failed with retcode:', proc.returncode
+        print >>sys.stderr, 'linker command:', shlex_join(cmd)
+        sys.exit(proc.returncode)
+
+    if opts.fix_elf:
+        cmd = [opts.fix_elf, opts.target]
+        proc = subprocess.Popen(cmd, shell=False, stderr=sys.stderr, stdout=sys.stdout)
+        proc.communicate()
+
+        if proc.returncode:
+            print >>sys.stderr, 'fix_elf has failed with retcode:', proc.returncode
+            print >>sys.stderr, 'fix_elf command:', shlex_join(cmd)
+            sys.exit(proc.returncode)
+
+    if opts.soname and opts.soname != opts.target:
+        if os.path.exists(opts.soname):
+            os.unlink(opts.soname)
+        os.link(opts.target, opts.soname)
+
+
+# -----------------Test---------------- #
+def write_temp_file(content):
+    import yatest.common as yc
+    filename = yc.output_path('test.exports')
+    with open(filename, 'w') as f:
+        f.write(content)
+    return filename
+
+
+def test_fix_cmd_darwin():
+    export_file_content = """
+C++ geobase5::details::lookup_impl::*
+C++ geobase5::hardcoded_service
+"""
+    filename = write_temp_file(export_file_content)
+    args = ['-Wl,--version-script={}'.format(filename)]
+    assert fix_cmd('DARWIN', args) == [
+        '-Wl,-exported_symbol,__ZN8geobase57details11lookup_impl*',
+        '-Wl,-exported_symbol,__ZTIN8geobase57details11lookup_impl*',
+        '-Wl,-exported_symbol,__ZTSN8geobase57details11lookup_impl*',
+        '-Wl,-exported_symbol,__ZTTN8geobase57details11lookup_impl*',
+        '-Wl,-exported_symbol,__ZTVN8geobase57details11lookup_impl*',
+        '-Wl,-exported_symbol,__ZNK8geobase57details11lookup_impl*',
+        '-Wl,-exported_symbol,__ZN8geobase517hardcoded_serviceE*',
+        '-Wl,-exported_symbol,__ZTIN8geobase517hardcoded_serviceE*',
+        '-Wl,-exported_symbol,__ZTSN8geobase517hardcoded_serviceE*',
+        '-Wl,-exported_symbol,__ZTTN8geobase517hardcoded_serviceE*',
+        '-Wl,-exported_symbol,__ZTVN8geobase517hardcoded_serviceE*',
+        '-Wl,-exported_symbol,__ZNK8geobase517hardcoded_serviceE*',
+    ]
+
+
+def run_fix_gnu_param(export_file_content):
+    filename = write_temp_file(export_file_content)
+    result = fix_gnu_param('LINUX', list(parse_export_file(filename)))[0]
+    version_script_path = result[len('-Wl,--version-script='):]
+    with open(version_script_path) as f:
+        content = f.read()
+    return content
+
+
+def test_fix_gnu_param():
+    export_file_content = """
+C++ geobase5::details::lookup_impl::*
+C   getFactoryMap
+"""
+    assert run_fix_gnu_param(export_file_content) == """{
+global:
+    extern "C" {
+        _ZN8geobase57details11lookup_impl*;
+        _ZTIN8geobase57details11lookup_impl*;
+        _ZTSN8geobase57details11lookup_impl*;
+        _ZTTN8geobase57details11lookup_impl*;
+        _ZTVN8geobase57details11lookup_impl*;
+        _ZNK8geobase57details11lookup_impl*;
+        getFactoryMap;
+    };
+local: *;
+};
+"""
+
+
+def test_fix_gnu_param_with_linux_version():
+    export_file_content = """
+C++ geobase5::details::lookup_impl::*
+linux_version ver1.0
+C   getFactoryMap
+"""
+    assert run_fix_gnu_param(export_file_content) == """ver1.0 {
+global:
+    extern "C" {
+        _ZN8geobase57details11lookup_impl*;
+        _ZTIN8geobase57details11lookup_impl*;
+        _ZTSN8geobase57details11lookup_impl*;
+        _ZTTN8geobase57details11lookup_impl*;
+        _ZTVN8geobase57details11lookup_impl*;
+        _ZNK8geobase57details11lookup_impl*;
+        getFactoryMap;
+    };
+local: *;
+};
+"""
diff --git a/build/scripts/link_exe.py b/build/scripts/link_exe.py
new file mode 100644
index 0000000000..eec8b20e1d
--- /dev/null
+++ b/build/scripts/link_exe.py
@@ -0,0 +1,186 @@
+import sys
+import subprocess
+import optparse
+
+from process_whole_archive_option import ProcessWholeArchiveOption
+
+
+def get_leaks_suppressions(cmd):
+    supp, newcmd = [], []
+    for arg in cmd:
+        if arg.endswith(".supp"):
+            supp.append(arg)
+        else:
+            newcmd.append(arg)
+    return supp, newcmd
+
+
+MUSL_LIBS = '-lc', '-lcrypt', '-ldl', '-lm', '-lpthread', '-lrt', '-lutil'
+
+
+CUDA_LIBRARIES = {
+    '-lcublas_static': '-lcublas',
+    '-lcublasLt_static': '-lcublasLt',
+    '-lcudart_static': '-lcudart',
+    '-lcudnn_static': '-lcudnn',
+    '-lcufft_static_nocallback': '-lcufft',
+    '-lcurand_static': '-lcurand',
+    '-lcusolver_static': '-lcusolver',
+    '-lcusparse_static': '-lcusparse',
+    '-lmyelin_compiler_static': '-lmyelin',
+    '-lmyelin_executor_static': '-lnvcaffe_parser',
+    '-lmyelin_pattern_library_static': '',
+    '-lmyelin_pattern_runtime_static': '',
+    '-lnvinfer_static': '-lnvinfer',
+    '-lnvinfer_plugin_static': '-lnvinfer_plugin',
+    '-lnvonnxparser_static': '-lnvonnxparser',
+    '-lnvparsers_static': '-lnvparsers'
+}
+
+
+def remove_excessive_flags(cmd):
+    flags = []
+    for flag in cmd:
+        if not flag.endswith('.ios.interface') and not flag.endswith('.pkg.fake'):
+            flags.append(flag)
+    return flags
+
+
+def fix_sanitize_flag(cmd):
+    """
+    Remove -fsanitize=address flag if sanitazers are linked explicitly for linux target.
+    """
+    for flag in cmd:
+        if flag.startswith('--target') and 'linux' not in flag.lower():
+            # use toolchained sanitize libraries
+            return cmd
+
+    CLANG_RT = 'contrib/libs/clang14-rt/lib/'
+    sanitize_flags = {
+        '-fsanitize=address': CLANG_RT + 'asan',
+        '-fsanitize=memory': CLANG_RT + 'msan',
+        '-fsanitize=leak': CLANG_RT + 'lsan',
+        '-fsanitize=undefined': CLANG_RT + 'ubsan',
+        '-fsanitize=thread': CLANG_RT + 'tsan'
+    }
+
+    used_sanitize_libs = []
+    aux = []
+    for flag in cmd:
+        if flag.startswith('-fsanitize-coverage='):
+            # do not link sanitizer libraries from clang
+            aux.append('-fno-sanitize-link-runtime')
+        if flag in sanitize_flags and any(s.startswith(sanitize_flags[flag]) for s in cmd):
+            # exclude '-fsanitize=' if appropriate library is linked explicitly
+            continue
+        if any(flag.startswith(lib) for lib in sanitize_flags.values()):
+            used_sanitize_libs.append(flag)
+            continue
+        aux.append(flag)
+
+    # move sanitize libraries out of the repeatedly searched group of archives
+    flags = []
+    for flag in aux:
+        if flag == '-Wl,--start-group':
+            flags += ['-Wl,--whole-archive'] + used_sanitize_libs + ['-Wl,--no-whole-archive']
+        flags.append(flag)
+
+    return flags
+
+
+def fix_cmd_for_musl(cmd):
+    flags = []
+    for flag in cmd:
+        if flag not in MUSL_LIBS:
+            flags.append(flag)
+    return flags
+
+
+def fix_cmd_for_dynamic_cuda(cmd):
+    flags = []
+    for flag in cmd:
+        if flag in CUDA_LIBRARIES:
+            flags.append(CUDA_LIBRARIES[flag])
+        else:
+            flags.append(flag)
+    return flags
+
+
+def gen_default_suppressions(inputs, output, source_root):
+    import collections
+    import os
+
+    supp_map = collections.defaultdict(set)
+    for filename in inputs:
+        sanitizer = os.path.basename(filename).split('.', 1)[0]
+        with open(os.path.join(source_root, filename)) as src:
+            for line in src:
+                line = line.strip()
+                if not line or line.startswith('#'):
+                    continue
+                supp_map[sanitizer].add(line)
+
+    with open(output, "wb") as dst:
+        for supp_type, supps in supp_map.items():
+            dst.write('extern "C" const char *__%s_default_suppressions() {\n' % supp_type)
+            dst.write('    return "{}";\n'.format('\\n'.join(sorted(supps))))
+            dst.write('}\n')
+
+
+def fix_blas_resolving(cmd):
+    # Intel mkl comes as a precompiled static library and thus can not be recompiled with sanitizer runtime instrumentation.
+    # That's why we prefer to use cblas instead of Intel mkl as a drop-in replacement under sanitizers.
+    # But if the library has dependencies on mkl and cblas simultaneously, it will get a linking error.
+    # Hence we assume that it's probably compiling without sanitizers and we can easily remove cblas to prevent multiple definitions of the same symbol at link time.
+    for arg in cmd:
+        if arg.startswith('contrib/libs') and arg.endswith('mkl-lp64.a'):
+            return [arg for arg in cmd if not arg.endswith('libcontrib-libs-cblas.a')]
+    return cmd
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.disable_interspersed_args()
+    parser.add_option('--musl', action='store_true')
+    parser.add_option('--custom-step')
+    parser.add_option('--python')
+    parser.add_option('--source-root')
+    parser.add_option('--dynamic-cuda', action='store_true')
+    parser.add_option('--arch')
+    parser.add_option('--linker-output')
+    parser.add_option('--whole-archive-peers', action='append')
+    parser.add_option('--whole-archive-libs', action='append')
+    return parser.parse_args()
+
+
+if __name__ == '__main__':
+    opts, args = parse_args()
+
+    cmd = fix_blas_resolving(args)
+    cmd = remove_excessive_flags(cmd)
+    if opts.musl:
+        cmd = fix_cmd_for_musl(cmd)
+
+    cmd = fix_sanitize_flag(cmd)
+
+    if opts.dynamic_cuda:
+        cmd = fix_cmd_for_dynamic_cuda(cmd)
+    cmd = ProcessWholeArchiveOption(opts.arch, opts.whole_archive_peers, opts.whole_archive_libs).construct_cmd(cmd)
+
+    if opts.custom_step:
+        assert opts.python
+        subprocess.check_call([opts.python] + [opts.custom_step] + args)
+
+    supp, cmd = get_leaks_suppressions(cmd)
+    if supp:
+        src_file = "default_suppressions.cpp"
+        gen_default_suppressions(supp, src_file, opts.source_root)
+        cmd += [src_file]
+
+    if opts.linker_output:
+        stdout = open(opts.linker_output, 'w')
+    else:
+        stdout = sys.stdout
+
+    rc = subprocess.call(cmd, shell=False, stderr=sys.stderr, stdout=stdout)
+    sys.exit(rc)
diff --git a/build/scripts/link_fat_obj.py b/build/scripts/link_fat_obj.py
new file mode 100644
index 0000000000..45df247d10
--- /dev/null
+++ b/build/scripts/link_fat_obj.py
@@ -0,0 +1,97 @@
+import argparse
+import subprocess
+import sys
+
+from process_whole_archive_option import ProcessWholeArchiveOption
+
+YA_ARG_PREFIX = '-Ya,'
+
+
+def get_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--obj')
+    parser.add_argument('--globals-lib')
+    parser.add_argument('--lib', required=True)
+    parser.add_argument('--arch', required=True)
+    parser.add_argument('--build-root', default=None)
+    parser.add_argument('--with-own-obj', action='store_true', default=False)
+    parser.add_argument('--with-global-srcs', action='store_true', default=False)
+
+    groups = {}
+    args_list = groups.setdefault('default', [])
+    for arg in sys.argv[1:]:
+        if arg == '--with-own-obj':
+            groups['default'].append(arg)
+        elif arg == '--globals-lib':
+            groups['default'].append(arg)
+        elif arg == '--with-global-srcs':
+            groups['default'].append(arg)
+        elif arg.startswith(YA_ARG_PREFIX):
+            group_name = arg[len(YA_ARG_PREFIX):]
+            args_list = groups.setdefault(group_name, [])
+        else:
+            args_list.append(arg)
+
+    return parser.parse_args(groups['default']), groups
+
+
+def strip_suppression_files(srcs):
+    return [s for s in srcs if not s.endswith('.supp')]
+
+
+def strip_forceload_prefix(srcs):
+    force_load_prefix = '-Wl,-force_load,'
+    return list(map(lambda lib: lib[lib.startswith(force_load_prefix) and len(force_load_prefix):], srcs))
+
+
+def main():
+    args, groups = get_args()
+
+    # Inputs
+    auto_input = groups['input']
+
+    # Outputs
+    lib_output = args.lib
+    obj_output = args.obj
+
+    # Dependencies
+    global_srcs = groups['global_srcs']
+    global_srcs = strip_suppression_files(global_srcs)
+    global_srcs = ProcessWholeArchiveOption(args.arch).construct_cmd(global_srcs)
+    global_srcs = strip_forceload_prefix(global_srcs)
+    peers = groups['peers']
+
+    # Tools
+    linker = groups['linker']
+    archiver = groups['archiver']
+
+    do_link = linker + ['-o', obj_output, '-Wl,-r', '-nodefaultlibs', '-nostartfiles'] + global_srcs + auto_input
+    do_archive = archiver + [lib_output] + peers
+    do_globals = None
+    if args.globals_lib:
+        do_globals = archiver + [args.globals_lib] + auto_input + global_srcs
+    if args.with_own_obj:
+        do_archive += auto_input
+    if args.with_global_srcs:
+        do_archive += global_srcs
+
+    def call(c):
+        proc = subprocess.Popen(c, shell=False, stderr=sys.stderr, stdout=sys.stdout, cwd=args.build_root)
+        proc.communicate()
+        return proc.returncode
+
+    if obj_output:
+        link_res = call(do_link)
+        if link_res:
+            sys.exit(link_res)
+
+    if do_globals:
+        glob_res = call(do_globals)
+        if glob_res:
+            sys.exit(glob_res)
+
+    sys.exit(call(do_archive))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/link_jsrc.py b/build/scripts/link_jsrc.py
new file mode 100644
index 0000000000..feae72fe4e
--- /dev/null
+++ b/build/scripts/link_jsrc.py
@@ -0,0 +1,27 @@
+import argparse
+import tarfile
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--input', nargs='*')
+    parser.add_argument('--output', required=True)
+
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+
+    with tarfile.open(args.output, 'w') as dest:
+        for jsrc in [j for j in args.input if j.endswith('.jsrc')]:
+            with tarfile.open(jsrc, 'r') as src:
+                for item in [m for m in src.getmembers() if m.name != '']:
+                    if item.isdir():
+                        dest.addfile(item)
+                    else:
+                        dest.addfile(item, src.extractfile(item))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/link_lib.py b/build/scripts/link_lib.py
new file mode 100644
index 0000000000..e73c02027a
--- /dev/null
+++ b/build/scripts/link_lib.py
@@ -0,0 +1,101 @@
+import sys
+import subprocess
+import tempfile
+import os
+import shutil
+
+
+class Opts(object):
+    def __init__(self, args):
+        self.archiver = args[0]
+        self.arch_type = args[1]
+        self.llvm_ar_format = args[2]
+        self.build_root = args[3]
+        self.plugin = args[4]
+        self.output = args[5]
+        auto_input = args[6:]
+
+        self.need_modify = False
+        self.extra_args = []
+
+        if self.arch_type.endswith('_AR'):
+            if self.arch_type == 'GNU_AR':
+                self.create_flags = ['rcs']
+                self.modify_flags = ['-M']
+            elif self.arch_type == 'LLVM_AR':
+                self.create_flags = ['rcs', '--format=%s' % self.llvm_ar_format]
+                self.modify_flags = ['-M']
+            self.need_modify = any(item.endswith('.a') for item in auto_input)
+            if self.need_modify:
+                self.objs = list( filter(lambda x: x.endswith('.o'), auto_input) )
+                self.libs = list( filter(lambda x: x.endswith('.a'), auto_input) )
+            else:
+                self.objs = auto_input
+                self.libs = []
+            self.output_opts = [self.output]
+        elif self.arch_type == 'LIBTOOL':
+            self.create_flags = ['-static']
+            self.objs = auto_input
+            self.libs = []
+            self.output_opts = ['-o', self.output]
+        elif self.arch_type == 'LIB':
+            self.create_flags = []
+            self.extra_args = list( filter(lambda x: x.startswith('/'), auto_input) )
+            self.objs = list( filter(lambda x: not x.startswith('/'), auto_input) )
+            self.libs = []
+            self.output_opts = ['/OUT:' + self.output]
+
+        self.plugin_flags = ['--plugin', self.plugin] if self.plugin != 'None' else []
+
+
+def get_opts(args):
+    return Opts(args)
+
+
+if __name__ == "__main__":
+    opts = get_opts(sys.argv[1:])
+
+    # There is a bug in llvm-ar. Some files with size slightly greater 2^32
+    # still have GNU format instead of GNU64 and cause link problems.
+    # Workaround just lowers llvm-ar's GNU64 threshold to 2^31.
+    if opts.arch_type == 'LLVM_AR':
+        os.environ['SYM64_THRESHOLD'] = '31'
+
+    def call():
+        try:
+            p = subprocess.Popen(cmd, stdin=stdin, cwd=opts.build_root)
+            rc = p.wait()
+            return rc
+        except OSError as e:
+            raise Exception('while running %s: %s' % (' '.join(cmd), e))
+
+    try:
+        os.unlink(opts.output)
+    except OSError:
+        pass
+
+    if not opts.need_modify:
+        cmd = [opts.archiver] + opts.create_flags + opts.plugin_flags + opts.extra_args + opts.output_opts + opts.objs
+        stdin = None
+        exit_code = call()
+    elif len(opts.objs) == 0 and len(opts.libs) == 1:
+        shutil.copy(opts.libs[0], opts.output)
+        exit_code = 0
+    else:
+        temp = tempfile.NamedTemporaryFile(dir=os.path.dirname(opts.output), delete=False)
+
+        with open(temp.name, 'w') as tmp:
+            tmp.write('CREATE {0}\n'.format(opts.output))
+            for lib in opts.libs:
+                tmp.write('ADDLIB {0}\n'.format(lib))
+            for obj in opts.objs:
+                tmp.write('ADDMOD {0}\n'.format(obj))
+            tmp.write('SAVE\n')
+            tmp.write('END\n')
+        cmd = [opts.archiver] + opts.modify_flags + opts.plugin_flags
+        stdin = open(temp.name)
+        exit_code = call()
+        os.remove(temp.name)
+
+    if exit_code != 0:
+        raise Exception('{0} returned non-zero exit code {1}. Stop.'.format(' '.join(cmd), exit_code))
diff --git a/build/scripts/list.py b/build/scripts/list.py
new file mode 100644
index 0000000000..7c3b2ae695
--- /dev/null
+++ b/build/scripts/list.py
@@ -0,0 +1,4 @@
+import sys

+

+if __name__ == "__main__":

+    print(' '.join(sys.argv[1:]))

diff --git a/build/scripts/llvm_opt_wrapper.py b/build/scripts/llvm_opt_wrapper.py
new file mode 100644
index 0000000000..38ca3004af
--- /dev/null
+++ b/build/scripts/llvm_opt_wrapper.py
@@ -0,0 +1,18 @@
+import subprocess
+import sys
+
+
+def fix(s):
+    # we use '#' instead of ',' because ymake always splits args by comma
+    if 'internalize' in s:
+        return s.replace('#', ',')
+
+    return s
+
+
+if __name__ == '__main__':
+    path = sys.argv[1]
+    args = [fix(s) for s in [path] + sys.argv[2:]]
+
+    rc = subprocess.call(args, shell=False, stderr=sys.stderr, stdout=sys.stdout)
+    sys.exit(rc)
diff --git a/build/scripts/make_container.py b/build/scripts/make_container.py
new file mode 100644
index 0000000000..a485baffdd
--- /dev/null
+++ b/build/scripts/make_container.py
@@ -0,0 +1,94 @@
+import os
+import shutil
+import stat
+import struct
+import subprocess
+import sys
+
+import container # 1
+
+
+def main(output_path, entry_path, input_paths, squashfs_path):
+    output_tmp_path = output_path + '.tmp'
+    shutil.copy2(entry_path, output_tmp_path)
+    st = os.stat(output_tmp_path)
+    os.chmod(output_tmp_path, st.st_mode | stat.S_IWUSR)
+
+    layer_paths = []
+    other_paths = []
+    for input_path in input_paths:
+        (layer_paths if input_path.endswith('.container_layer') else other_paths).append(input_path)
+
+    if len(other_paths) == 0:
+        raise Exception('No program in container dependencies')
+
+    if len(other_paths) > 1:
+        raise Exception('Multiple non-layer inputs')
+
+    program_path = other_paths[0]
+    program_container_path = os.path.basename(program_path)
+
+    os.symlink(program_container_path, 'entry')
+    add_cmd = [ os.path.join(squashfs_path, 'mksquashfs') ]
+    add_cmd.extend([program_path, 'entry', 'program_layer'])
+    subprocess.run(add_cmd)
+
+    layer_paths.append('program_layer')
+
+    container.join_layers(layer_paths, 'container_data', squashfs_path)
+
+    size = 0
+    block_size = 1024 * 1024
+
+    with open(output_tmp_path, 'ab') as output:
+        with open('container_data', 'rb') as input_:
+            while True:
+                data = input_.read(block_size)
+                output.write(data)
+                size += len(data)
+
+                if len(data) < block_size:
+                    break
+
+        with open(os.path.join(squashfs_path, 'unsquashfs'), 'rb') as input_:
+            while True:
+                data = input_.read(block_size)
+                output.write(data)
+                size += len(data)
+
+                if len(data) == 0:
+                    break
+
+
+        output.write(struct.pack('<Q', size))
+
+    os.rename(output_tmp_path, output_path)
+
+
+def entry():
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-o', '--output', required=True)
+    parser.add_argument('-s', '--squashfs-path', required=True)
+    parser.add_argument('input', nargs='*')
+
+    args = parser.parse_args()
+
+    def is_container_entry(path):
+        return os.path.basename(path) == '_container_entry'
+
+    input_paths = []
+    entry_paths = []
+
+    for input_path in args.input:
+        (entry_paths if is_container_entry(input_path) else input_paths).append(input_path)
+
+    if len(entry_paths) != 1:
+        raise Exception('Could not select container entry from {}'.format(entry_paths))
+
+    return main(args.output, entry_paths[0], input_paths, args.squashfs_path)
+
+
+if __name__ == '__main__':
+    sys.exit(entry())
diff --git a/build/scripts/make_container_layer.py b/build/scripts/make_container_layer.py
new file mode 100644
index 0000000000..4f61f5a2e5
--- /dev/null
+++ b/build/scripts/make_container_layer.py
@@ -0,0 +1,24 @@
+import sys
+
+import container # 1
+
+
+class UserError(Exception):
+    pass
+
+
+def entry():
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-o', '--output', required=True)
+    parser.add_argument('-s', '--squashfs-path', required=True)
+    parser.add_argument('input', nargs='*')
+
+    args = parser.parse_args()
+
+    return container.join_layers(args.input, args.output, args.squashfs_path)
+
+
+if __name__ == '__main__':
+    sys.exit(entry())
diff --git a/build/scripts/make_java_classpath_file.py b/build/scripts/make_java_classpath_file.py
new file mode 100644
index 0000000000..c70a7876d7
--- /dev/null
+++ b/build/scripts/make_java_classpath_file.py
@@ -0,0 +1,26 @@
+import os
+import sys
+
+import process_command_files as pcf
+
+
+def make_cp_file(args):
+    source = args[0]
+    destination = args[1]
+    with open(source) as src:
+        lines = [l.strip() for l in src if l.strip()]
+    with open(destination, 'w') as dst:
+        dst.write(os.pathsep.join(lines))
+
+def make_cp_file_from_args(args):
+    destination = args[0]
+    with open(destination, 'w') as dst:
+        dst.write(os.pathsep.join(args[1:]))
+
+
+if __name__ == '__main__':
+    args = pcf.get_args(sys.argv[1:])
+    if sys.argv[1] != '--from-args':
+        make_cp_file(args)
+    else:
+        make_cp_file_from_args(args[1:])
diff --git a/build/scripts/make_java_srclists.py b/build/scripts/make_java_srclists.py
new file mode 100644
index 0000000000..65174bafd7
--- /dev/null
+++ b/build/scripts/make_java_srclists.py
@@ -0,0 +1,128 @@
+import os
+import sys
+import argparse
+
+import process_command_files as pcf
+import java_pack_to_file as jcov
+
+
+def writelines(f, rng):
+    f.writelines(item + '\n' for item in rng)
+
+
+def add_rel_src_to_coverage(coverage, src, source_root):
+    rel = os.path.relpath(src, source_root)
+    if not rel.startswith('..' + os.path.sep):
+        coverage.append(rel)
+
+
+def main():
+    args = pcf.get_args(sys.argv[1:])
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--moddir')
+    parser.add_argument('--java')
+    parser.add_argument('--groovy')
+    parser.add_argument('--kotlin')
+    parser.add_argument('--coverage')
+    parser.add_argument('--source-root')
+    args, remaining_args = parser.parse_known_args(args)
+
+    java = []
+    kotlin = []
+    groovy = []
+    coverage = []
+
+    cur_resources_list_file = None
+    cur_jsources_list_file = None
+    cur_srcdir = None
+    cur_resources = []
+    cur_jsources = []
+
+    FILE_ARG = 1
+    RESOURCES_DIR_ARG = 2
+    SRCDIR_ARG = 3
+    JSOURCES_DIR_ARG = 4
+
+    next_arg=FILE_ARG
+
+    for src in remaining_args:
+        if next_arg == RESOURCES_DIR_ARG:
+            assert cur_resources_list_file is None
+            cur_resources_list_file = src
+            next_arg = FILE_ARG
+            continue
+        elif next_arg == JSOURCES_DIR_ARG:
+            assert cur_jsources_list_file is None
+            cur_jsources_list_file = src
+            next_arg = FILE_ARG
+            continue
+        elif next_arg == SRCDIR_ARG:
+            assert cur_srcdir is None
+            cur_srcdir = src if os.path.isabs(src) else os.path.join(args.moddir, src)
+            next_arg = FILE_ARG
+            continue
+
+        if src.endswith(".java"):
+            java.append(src)
+            kotlin.append(src)
+            if args.coverage and args.source_root:
+                add_rel_src_to_coverage(coverage, src, args.source_root)
+        elif args.kotlin and src.endswith(".kt"):
+            kotlin.append(src)
+            if args.coverage and args.source_root:
+                add_rel_src_to_coverage(coverage, src, args.source_root)
+        elif args.groovy and src.endswith(".groovy"):
+            groovy.append(src)
+        else:
+            if src == '--resources':
+                if cur_resources_list_file is not None:
+                    with open(cur_resources_list_file, 'w') as f:
+                        writelines(f, cur_resources)
+                cur_resources_list_file = None
+                cur_srcdir = None
+                cur_resources = []
+                next_arg = RESOURCES_DIR_ARG
+                continue
+            if src == '--jsources':
+                if cur_jsources_list_file is not None:
+                    with open(cur_jsources_list_file, 'w') as f:
+                        writelines(f, cur_jsources)
+                cur_jsources_list_file = None
+                cur_jsources = []
+                next_arg = JSOURCES_DIR_ARG
+                continue
+            elif src == '--srcdir':
+                next_arg = SRCDIR_ARG
+                continue
+            else:
+                assert cur_srcdir is not None and cur_resources_list_file is not None
+                cur_resources.append(os.path.relpath(src, cur_srcdir))
+
+        if cur_jsources_list_file is not None:
+            assert cur_srcdir is not None
+            cur_jsources.append(os.path.relpath(src, cur_srcdir))
+
+    if cur_resources_list_file is not None:
+        with open(cur_resources_list_file, 'w') as f:
+            writelines(f, cur_resources)
+    if cur_jsources_list_file is not None:
+        with open(cur_jsources_list_file, 'w') as f:
+            writelines(f, cur_jsources)
+
+    if args.java:
+        with open(args.java, 'w') as f:
+            writelines(f, java)
+    if args.kotlin:
+        with open(args.kotlin, 'w') as f:
+            writelines(f, kotlin)
+    if args.groovy:
+        with open(args.groovy, 'w') as f:
+            writelines(f, groovy)
+    if args.coverage:
+        jcov.write_coverage_sources(args.coverage, args.source_root, coverage)
+
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/build/scripts/make_manifest_from_bf.py b/build/scripts/make_manifest_from_bf.py
new file mode 100644
index 0000000000..bfea3ba3de
--- /dev/null
+++ b/build/scripts/make_manifest_from_bf.py
@@ -0,0 +1,28 @@
+import sys
+import zipfile
+import os
+import re
+
+
+def prepare_path(path):
+    return ('file:/' + path.lstrip('/')) if os.path.isabs(path) else path
+
+
+def main(args):
+    bf, mf = args[0], args[1]
+    if not os.path.exists(os.path.dirname(mf)):
+        os.makedirs(os.path.dirname(mf))
+    with open(bf) as f:
+        class_path = f.read().strip()
+    class_path = ' '.join(map(prepare_path, class_path.split('\n')))
+    with zipfile.ZipFile(mf, 'w') as zf:
+        lines = []
+        while class_path:
+            lines.append(class_path[:60])
+            class_path = class_path[60:]
+        if lines:
+            zf.writestr('META-INF/MANIFEST.MF', 'Manifest-Version: 1.0\nClass-Path: \n ' + '\n '.join(lines) + ' \n\n')
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/build/scripts/mangle_typeinfo_names.py b/build/scripts/mangle_typeinfo_names.py
new file mode 100755
index 0000000000..8f30a46552
--- /dev/null
+++ b/build/scripts/mangle_typeinfo_names.py
@@ -0,0 +1,317 @@
+#!/usr/bin/env python
+
+import base64
+import hashlib
+import io
+import os
+import struct
+import subprocess
+import sys
+from collections import namedtuple
+
+
+"""
+ELF-64 Object File Format: https://uclibc.org/docs/elf-64-gen.pdf
+ELF-32: https://uclibc.org/docs/elf.pdf
+"""
+
+
+MANGLED_HASH_SIZE = 15
+
+# len(base64(sha1(name)[:MANGLED_HASH_SIZE]) + '\x00')
+MANGLED_NAME_SIZE = 21
+
+
+ArObject = namedtuple('ArObject', ['header', 'data'])
+
+ElfSection = namedtuple('ElfSection', ['header_offset', 'name', 'data_offset', 'size', 'link', 'entry_size'])
+
+
+def find(it, pred):
+    return next(iter(filter(pred, it)), None)
+
+
+def mangle_name(name_bytes):
+    sha1 = hashlib.sha1()
+    sha1.update(name_bytes)
+    dgst = sha1.digest()
+    return base64.b64encode(dgst[:MANGLED_HASH_SIZE])
+
+
+def unpack(format, buffer, offset=0):
+    return struct.unpack(format, buffer[offset : offset + struct.calcsize(format)])
+
+
+def unpack_section_header(buffer, offset, elf64):
+    # read sh_name, sh_offset, sh_size, sh_link, sh_entsize from section headers (Elf64_Shdr/Elf32_Shdr):
+    #
+    # typedef struct
+    # {
+    #     Elf64_Word  sh_name;        /* Section name */
+    #     Elf64_Word  sh_type;        /* Section type */
+    #     Elf64_Xword sh_flags;       /* Section attributes */
+    #     Elf64_Addr  sh_addr;        /* Virtual address in memory */
+    #     Elf64_Off   sh_offset;      /* Offset in file */
+    #     Elf64_Xword sh_size;        /* Size of section */
+    #     Elf64_Word  sh_link;        /* Link to other section */
+    #     Elf64_Word  sh_info;        /* Miscellaneous information */
+    #     Elf64_Xword sh_addralign;   /* Address alignment boundary */
+    #     Elf64_Xword sh_entsize;     /* Size of entries, if section has table */
+    # } Elf64_Shdr;
+    #
+    # typedef struct {
+    #     Elf32_Word  sh_name;
+    #     Elf32_Word  sh_type;
+    #     Elf32_Word  sh_flags;
+    #     Elf32_Addr  sh_addr;
+    #     Elf32_Off   sh_offset;
+    #     Elf32_Word  sh_size;
+    #     Elf32_Word  sh_link;
+    #     Elf32_Word  sh_info;
+    #     Elf32_Word  sh_addralign;
+    #     Elf32_Word  sh_entsize;
+    # } Elf32_Shdr;
+
+    section_header_format = '< L 20x Q Q L 12x Q' if elf64 else '< L 12x L L L 8x L'
+    return ElfSection(offset, *unpack(section_header_format, buffer, offset))
+
+
+def read_elf_sections(elf_data, elf64):
+    # read e_shoff, e_shentsize, e_shnum, e_shstrndx from elf header (Elf64_Ehdr/Elf32_Ehdr):
+    #
+    # typedef struct
+    # {
+    #     unsigned char   e_ident[16];    /* ELF identification */
+    #     Elf64_Half      e_type;         /* Object file type */
+    #     Elf64_Half      e_machine;      /* Machine type */
+    #     Elf64_Word      e_version;      /* Object file version */
+    #     Elf64_Addr      e_entry;        /* Entry point address */
+    #     Elf64_Off       e_phoff;        /* Program header offset */
+    #     Elf64_Off       e_shoff;        /* Section header offset */
+    #     Elf64_Word      e_flags;        /* Processor-specific flags */
+    #     Elf64_Half      e_ehsize;       /* ELF header size */
+    #     Elf64_Half      e_phentsize;    /* Size of program header entry */
+    #     Elf64_Half      e_phnum;        /* Number of program header entries */
+    #     Elf64_Half      e_shentsize;    /* Size of section header entry */
+    #     Elf64_Half      e_shnum;        /* Number of section header entries */
+    #     Elf64_Half      e_shstrndx;     /* Section name string table index */
+    # } Elf64_Ehdr;
+    #
+    # #define EI_NIDENT   16
+    #
+    # typedef struct {
+    #     unsigned char   e_ident[EI_NIDENT];
+    #     Elf32_Half      e_type;
+    #     Elf32_Half      e_machine;
+    #     Elf32_Word      e_version;
+    #     Elf32_Addr      e_entry;
+    #     Elf32_Off       e_phoff;
+    #     Elf32_Off       e_shoff;
+    #     Elf32_Word      e_flags;
+    #     Elf32_Half      e_ehsize;
+    #     Elf32_Half      e_phentsize;
+    #     Elf32_Half      e_phnum;
+    #     Elf32_Half      e_shentsize;
+    #     Elf32_Half      e_shnum;
+    #     Elf32_Half      e_shstrndx;
+    # } Elf32_Ehdr;
+
+    section_header_offset, section_header_entry_size, section_header_entries_number,\
+        section_name_string_table_index = unpack('< Q 10x 3H', elf_data, 40) if elf64 else unpack('< L 10x 3H', elf_data, 32)
+
+    # https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.sheader.html
+    # If the number of sections is greater than or equal to SHN_LORESERVE (0xff00), e_shnum has the value SHN_UNDEF (0)
+    # and the actual number of section header table entries is contained in the sh_size field of the section header
+    # at index 0 (otherwise, the sh_size member of the initial entry contains 0).
+    if section_header_entries_number == 0:
+        section_header_entries_number = unpack_section_header(elf_data, section_header_offset, elf64).size
+
+    sections = [unpack_section_header(elf_data, section_header_offset + i * section_header_entry_size, elf64)
+                for i in range(section_header_entries_number)]
+
+    # section names data
+    section_names_section = sections[section_name_string_table_index]
+    section_names_data = elf_data[section_names_section.data_offset : section_names_section.data_offset + section_names_section.size]
+
+    # read section names
+    for i, section in enumerate(sections):
+        sections[i] = section._replace(
+            name=section_names_data[section.name : section_names_data.find(b'\x00', section.name)].decode())
+
+    return sections
+
+
+def mangle_elf_typeinfo_names(elf_data, elf64, sections):
+    symbol_sizes = {}
+
+    for sect_i, section in enumerate(sections):
+        if not section.name.startswith('.rodata._ZTS') or section.size <= MANGLED_NAME_SIZE:
+            continue
+
+        typeinfo_name = elf_data[section.data_offset : section.data_offset + section.size]
+        mangled = mangle_name(typeinfo_name.rstrip(b'\x00')) + b'\x00'
+        if len(mangled) >= len(typeinfo_name):
+            continue
+
+        # patch section data
+        elf_data[section.data_offset : section.data_offset + len(mangled)] = mangled
+        # patch section size (sh_size in Elf64_Shdr/Elf32_Shdr)
+        if elf64:
+            elf_data[section.header_offset + 32 : section.header_offset + 40] = struct.pack('< Q', len(mangled))
+        else:
+            elf_data[section.header_offset + 20 : section.header_offset + 24] = struct.pack('< L', len(mangled))
+
+        symbol_sizes[section.name[len('.rodata.'):]] = len(mangled)
+
+    return symbol_sizes
+
+
+def patch_elf_symbol_sizes(elf_data, elf64, sections, symbol_sizes):
+    symtab = find(sections, lambda s: s.name == '.symtab')
+    if not symtab:
+        return
+
+    for sym_i in range(symtab.size / symtab.entry_size):
+        symtab_entry_offset = symtab.data_offset + symtab.entry_size * sym_i
+        symtab_entry = elf_data[symtab_entry_offset : symtab_entry_offset + symtab.entry_size]
+
+        # unpack symbol name offset in symbols name section (st_name) from Elf64_Sym/Elf32_Sym:
+        #
+        # typedef struct
+        # {
+        #     Elf64_Word      st_name;    /* Symbol name */
+        #     unsigned char   st_info;    /* Type and Binding attributes */
+        #     unsigned char   st_other;   /* Reserved */
+        #     Elf64_Half      st_shndx;   /* Section table index */
+        #     Elf64_Addr      st_value;   /* Symbol value */
+        #     Elf64_Xword     st_size;    /* Size of object (e.g., common) */
+        # } Elf64_Sym;
+        #
+        # typedef struct {
+        #     Elf32_Word      st_name;
+        #     Elf32_Addr      st_value;
+        #     Elf32_Word      st_size;
+        #     unsigned char   st_info;
+        #     unsigned char   st_other;
+        #     Elf32_Half      st_shndx;
+        # } Elf32_Sym;
+        symbol_name_offset = unpack('< L', symtab_entry)[0]
+
+        # symbol name offset from start of elf file
+        global_name_offset = sections[symtab.link].data_offset + symbol_name_offset
+
+        name = elf_data[global_name_offset : elf_data.find(b'\x00', global_name_offset)].decode()
+        symbol_size = symbol_sizes.get(name)
+        if symbol_size:
+            # patch st_size in Elf64_Sym/Elf32_Sym
+            if elf64:
+                elf_data[symtab_entry_offset + 16 : symtab_entry_offset + 24] = struct.pack('< Q', symbol_size)
+            else:
+                elf_data[symtab_entry_offset + 8 : symtab_entry_offset + 12] = struct.pack('< L', symbol_size)
+
+
+def mangle_elf(elf_data):
+    elf_data = bytearray(elf_data)
+
+    ei_mag, ei_class = unpack('4s B', elf_data)
+    assert ei_mag == b'\x7fELF'
+    if ei_class == 1: # ELFCLASS32
+        elf64 = False
+    elif ei_class == 2: # ELFCLASS64
+        elf64 = True
+    else:
+        raise Exception('unknown ei_class: ' + str(ei_class))
+
+    sections = read_elf_sections(elf_data, elf64)
+
+    symbol_sizes = mangle_elf_typeinfo_names(elf_data, elf64, sections)
+
+    if len(symbol_sizes) != 0:
+        patch_elf_symbol_sizes(elf_data, elf64, sections, symbol_sizes)
+
+    return elf_data
+
+
+def read_ar_object(ar):
+    # ar format: https://docs.oracle.com/cd/E36784_01/html/E36873/ar.h-3head.html
+    #
+    # #define  ARFMAG   "`\n"         /* header trailer string */
+    #
+    # struct  ar_hdr                  /* file member header */
+    # {
+    #     char    ar_name[16];        /* '/' terminated file member name */
+    #     char    ar_date[12];        /* file member date */
+    #     char    ar_uid[6]           /* file member user identification */
+    #     char    ar_gid[6]           /* file member group identification */
+    #     char    ar_mode[8]          /* file member mode (octal) */
+    #     char    ar_size[10];        /* file member size */
+    #     char    ar_fmag[2];         /* header trailer string */
+    # };
+
+    header = ar.read(60)
+    if len(header) == 0:
+        return None
+    assert header[58:] == b'`\n'
+
+    size = int(bytes(header[48:58]).decode().rstrip(' '))
+    data = ar.read(size)
+    return ArObject(header, data)
+
+
+def is_elf_data(data):
+    return data[:4] == b'\x7fELF'
+
+
+def mangle_ar_impl(ar, out):
+    ar_magic = ar.read(8)
+    if ar_magic != b'!<arch>\n':
+        raise Exception('bad ar magic: {}'.format(ar_magic))
+
+    out.write(ar_magic)
+
+    string_table = None
+
+    while True:
+        obj = read_ar_object(ar)
+        if not obj:
+            break
+
+        data = mangle_elf(obj.data) if is_elf_data(obj.data) else obj.data
+
+        out.write(obj.header)
+        out.write(data)
+
+
+def mangle_ar(path):
+    out_path = path + '.mangled'
+    with open(path, 'rb') as ar:
+        try:
+            with open(out_path, 'wb') as out:
+                mangle_ar_impl(ar, out)
+        except:
+            os.unlink(out_path)
+            raise
+
+        os.rename(out_path, path)
+
+
+def main():
+    for arg in sys.argv[1:]:
+        if not ((arg.endswith('.o') or arg.endswith('.a')) and os.path.exists(arg)):
+            continue
+
+        if arg.endswith('.o'):
+            with open(arg, 'rb') as o:
+                data = o.read()
+                mangled = mangle_elf(data) if is_elf_data(data) else None
+
+            if mangled:
+                os.unlink(arg)
+                with open(arg, 'wb') as o:
+                    o.write(mangled)
+        elif arg.endswith('.a'):
+            mangle_ar(arg)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/merge_coverage_data.py b/build/scripts/merge_coverage_data.py
new file mode 100644
index 0000000000..b7fa3c6a86
--- /dev/null
+++ b/build/scripts/merge_coverage_data.py
@@ -0,0 +1,32 @@
+import sys
+import tarfile
+import copy
+import os
+import uuid
+
+
+def main(args):
+    output_file, args = args[0], args[1:]
+    # heretic@: Splits files on which could be merged( files ) and which should not be merged( expendables )
+    # expendables will be in output_file in form {name}{ordinal number of archive in args[]}.{extension}
+    try:
+        split_i = args.index('-no-merge')
+    except ValueError:
+        split_i = len(args)
+    files, expendables = args[:split_i], args[split_i + 1:]
+
+    with tarfile.open(output_file, 'w') as outf:
+        for x in files:
+            with tarfile.open(x) as tf:
+                for tarinfo in tf:
+                    new_tarinfo = copy.deepcopy(tarinfo)
+                    if new_tarinfo.name in expendables:
+                        dirname, basename = os.path.split(new_tarinfo.name)
+                        basename_parts = basename.split('.', 1)
+                        new_basename = '.'.join([basename_parts[0] + str(uuid.uuid4())] + basename_parts[1:])
+                        new_tarinfo.name = os.path.join(dirname, new_basename)
+                    outf.addfile(new_tarinfo, tf.extractfile(tarinfo))
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/build/scripts/merge_files.py b/build/scripts/merge_files.py
new file mode 100644
index 0000000000..d42d6a2139
--- /dev/null
+++ b/build/scripts/merge_files.py
@@ -0,0 +1,8 @@
+import sys
+
+
+if __name__ == "__main__":
+    with open(sys.argv[1], "w") as f:
+        for appended in sys.argv[2:]:
+            with open(appended) as a:
+                f.write(a.read())
diff --git a/build/scripts/mkdir.py b/build/scripts/mkdir.py
new file mode 100755
index 0000000000..a326b29300
--- /dev/null
+++ b/build/scripts/mkdir.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+import os
+import sys
+
+
+def mkdir_p(directory):
+    if not os.path.exists(directory):
+        os.makedirs(directory)
+
+if __name__ == "__main__":
+    for directory in sys.argv[1:]:
+        mkdir_p(directory)
diff --git a/build/scripts/mkdocs_builder_wrapper.py b/build/scripts/mkdocs_builder_wrapper.py
new file mode 100644
index 0000000000..7a0df04190
--- /dev/null
+++ b/build/scripts/mkdocs_builder_wrapper.py
@@ -0,0 +1,36 @@
+from __future__ import unicode_literals
+import os
+import subprocess
+import sys
+
+
+def main():
+    cmd = []
+    build_root = sys.argv[1]
+    length = len(build_root)
+    is_dep = False
+    for arg in sys.argv[2:]:
+        if is_dep:
+            is_dep = False
+            if not arg.endswith('.tar.gz'):
+                continue
+            basename = os.path.basename(arg)
+            assert arg.startswith(build_root) and len(arg) > length + len(basename) and arg[length] in ('/', '\\')
+            cmd.extend([str('--dep'), str('{}:{}:{}'.format(build_root, os.path.dirname(arg[length+1:]), basename))])
+        elif arg == '--dep':
+            is_dep = True
+        else:
+            cmd.append(arg)
+    assert not is_dep
+    p = subprocess.Popen(cmd, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    if p.returncode:
+        if out:
+            sys.stderr.write('stdout:\n{}\n'.format(out.decode('utf-8')))
+        if err:
+            sys.stderr.write('stderr:\n{}\n'.format(err.decode('utf-8')))
+    sys.exit(p.returncode)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/mkver.py b/build/scripts/mkver.py
new file mode 100755
index 0000000000..321cdaade1
--- /dev/null
+++ b/build/scripts/mkver.py
@@ -0,0 +1,12 @@
+import sys
+
+if __name__ == '__main__':
+    with open(sys.argv[1], 'r') as f:
+        data = f.readline()
+
+    beg = data.find('(') + 1
+    end = data.find(')')
+    version = data[beg:end]
+
+    print '#pragma once'
+    print '#define DEBIAN_VERSION "%s"' % version
diff --git a/build/scripts/move.py b/build/scripts/move.py
new file mode 100644
index 0000000000..3f611fbc2e
--- /dev/null
+++ b/build/scripts/move.py
@@ -0,0 +1,15 @@
+import os
+import sys
+
+# /script/move.py <src-1> <tgt-1> <src-2> <tgt-2> ... <src-n> <tgt-n>
+# renames src-1 to tgt-1, src-2 to tgt-2, ..., src-n to tgt-n.
+
+
+def main():
+    assert len(sys.argv) % 2 == 1
+    for index in range(1, len(sys.argv), 2):
+        os.rename(sys.argv[index], sys.argv[index + 1])
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/pack_ios.py b/build/scripts/pack_ios.py
new file mode 100644
index 0000000000..37c36d1f95
--- /dev/null
+++ b/build/scripts/pack_ios.py
@@ -0,0 +1,48 @@
+import argparse
+import os
+import shutil
+import subprocess
+import sys
+import tarfile
+
+
+def just_do_it():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--binary", required=True, help="executable file")
+    parser.add_argument("--target", required=True, help="target archive path")
+    parser.add_argument("--temp-dir", required=True, help="temp dir")
+    parser.add_argument("peers", nargs='*')
+    args = parser.parse_args()
+    app_tar = [p for p in args.peers if p.endswith('.ios.interface')]
+    if not app_tar:
+        print >> sys.stderr, 'No one IOS_INTERFACE module found'
+        shutil.copyfile(args.binary, os.path.join(args.temp_dir, 'bin'))
+        if os.path.exists(args.target):
+            os.remove(args.target)
+        with tarfile.open(args.target, 'w') as tf:
+            tf.add(os.path.join(args.temp_dir, 'bin'), arcname=os.path.join(os.path.basename(args.binary) + '.app', 'bin'))
+        return
+    if len(app_tar) > 1:
+        app_tar = [p for p in args.peers if not p.endswith('.default.ios.interface')]
+    if len(app_tar) > 1:
+        print >> sys.stderr, 'Many IOS_INTERFACE modules found, {} will be used'.format(app_tar[-1])
+    app_tar = app_tar[-1]
+    with tarfile.open(app_tar) as tf:
+        tf.extractall(args.temp_dir)
+    tar_suffix = '.default.ios.interface' if app_tar.endswith('.default.ios.interface') else '.ios.interface'
+    app_unpacked_path = os.path.join(args.temp_dir, os.path.basename(app_tar)[:-len(tar_suffix)] + '.app')
+    if not os.path.exists(app_unpacked_path):
+        raise Exception('Bad IOS_INTERFACE resource: {}'.format(app_tar))
+    shutil.copyfile(args.binary, os.path.join(app_unpacked_path, 'bin'))
+    subprocess.check_call(['/usr/bin/codesign', '--force', '--sign', '-', app_unpacked_path])
+    if os.path.exists(args.target):
+        os.remove(args.target)
+    binary_origin_name = os.path.basename(args.binary)
+    while os.path.splitext(binary_origin_name)[1]:
+        binary_origin_name = os.path.splitext(binary_origin_name)[0]
+    with tarfile.open(args.target, 'w') as tf:
+        tf.add(app_unpacked_path, arcname=binary_origin_name + '.app', recursive=True)
+
+
+if __name__ == '__main__':
+    just_do_it()
diff --git a/build/scripts/pack_jcoverage_resources.py b/build/scripts/pack_jcoverage_resources.py
new file mode 100644
index 0000000000..f6e181067a
--- /dev/null
+++ b/build/scripts/pack_jcoverage_resources.py
@@ -0,0 +1,24 @@
+import sys
+import tarfile
+import os
+import subprocess
+
+
+def main(args):
+    output_file = args[0]
+    report_file = args[1]
+
+    res = subprocess.call(args[args.index('-end') + 1:])
+
+    if not os.path.exists(report_file):
+        print>>sys.stderr, 'Can\'t find jacoco exec file'
+        return res
+
+    with tarfile.open(output_file, 'w') as outf:
+        outf.add(report_file, arcname=os.path.basename(report_file))
+
+    return res
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv[1:]))
diff --git a/build/scripts/perl_wrapper.py b/build/scripts/perl_wrapper.py
new file mode 100644
index 0000000000..cb4027f1d3
--- /dev/null
+++ b/build/scripts/perl_wrapper.py
@@ -0,0 +1,24 @@
+import os
+import sys
+import shutil
+
+if __name__ == '__main__':
+    path = sys.argv[1]
+    to = sys.argv[-1]
+    fr = sys.argv[-2]
+    to_dir = os.path.dirname(to)
+
+    os.chdir(to_dir)
+
+    f1 = os.path.basename(fr)
+    fr_ = os.path.dirname(fr)
+    f2 = os.path.basename(fr_)
+    fr_ = os.path.dirname(fr_)
+
+    os.makedirs(f2)
+    shutil.copyfile(fr, os.path.join(f2, f1))
+
+    if path[0] != '/':
+        path = os.path.join(os.path.dirname(__file__), path)
+
+    os.execv(path, [path] + sys.argv[2:])
diff --git a/build/scripts/postprocess_go_fbs.py b/build/scripts/postprocess_go_fbs.py
new file mode 100644
index 0000000000..e6d5184a5e
--- /dev/null
+++ b/build/scripts/postprocess_go_fbs.py
@@ -0,0 +1,72 @@
+import argparse
+import re
+import os
+
+
+# very simple regexp to find go import statement in the source code
+# NOTE! only one-line comments are somehow considered
+IMPORT_DECL=re.compile(r'''
+    \bimport
+    (
+        \s+((\.|\w+)\s+)?"[^"]+" ( \s+//[^\n]* )?
+        | \s* \( \s* ( ( \s+ ((\.|\w+)\s+)? "[^"]+" )? ( \s* //[^\n]* )? )* \s* \)
+    )''', re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--input-dir', required=True)
+    parser.add_argument('--map', nargs='*', default=None)
+
+    return parser.parse_args()
+
+
+def process_go_file(file_name, import_map):
+    content = ''
+    with open(file_name, 'r') as f:
+        content = f.read()
+
+    start = -1
+    end = -1
+    for it in IMPORT_DECL.finditer(content):
+        if start < 0:
+            start = it.start()
+        end = it.end()
+
+    if start < 0:
+        return
+
+    imports = content[start:end]
+    for namespace, path in import_map.items():
+        ns = namespace.split('.')
+        name = '__'.join(ns)
+        import_path = '/'.join(ns)
+        imports = imports.replace('{} "{}"'.format(name, import_path), '{} "a.yandex-team.ru/{}"'.format(name, path))
+
+    if imports != content[start:end]:
+        with open(file_name, 'w') as f:
+            f.write(content[:start])
+            f.write(imports)
+            f.write(content[end:])
+
+
+def main():
+    args = parse_args()
+
+    if not args.map:
+        return
+
+    raw_import_map = sorted(set(args.map))
+    import_map = dict(z.split('=', 1) for z in raw_import_map)
+    if len(raw_import_map) != len(import_map):
+        for k, v in (z.split('=', 1) for z in raw_import_map):
+            if v != import_map[k]:
+                raise Exception('import map [{}] contains different values for key [{}]: [{}] and [{}].'.format(args.map, k, v, import_map[k]))
+
+    for root, _, files in os.walk(args.input_dir):
+        for src in (f for f in files if f.endswith('.go')):
+            process_go_file(os.path.join(root, src), import_map)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/preprocess.py b/build/scripts/preprocess.py
new file mode 100644
index 0000000000..4657bef732
--- /dev/null
+++ b/build/scripts/preprocess.py
@@ -0,0 +1,48 @@
+import sys
+import os
+
+
+def load_file(p):
+    with open(p, 'r') as f:
+        return f.read()
+
+
+def step(base, data, hh):
+    def flt():
+        for l in data.split('\n'):
+            if l in hh:
+                pp = os.path.join(base, hh[l])
+
+                yield '\n\n' + load_file(pp) + '\n\n'
+
+                os.unlink(pp)
+            else:
+                yield l
+
+    return '\n'.join(flt())
+
+
+def subst_headers(path, headers):
+    hh = dict()
+
+    for h in headers:
+        hh['# include "' + h + '"'] = h
+
+    data = load_file(path)
+    prev = data
+
+    while True:
+        ret = step(os.path.dirname(path), prev, hh)
+
+        if ret == prev:
+            break
+
+        prev = ret
+
+    if data != prev:
+        with open(path, 'w') as f:
+            f.write(prev)
+
+
+if __name__ == '__main__':
+    subst_headers(sys.argv[1], ['stack.hh', 'position.hh', 'location.hh'])
diff --git a/build/scripts/process_command_files.pyc b/build/scripts/process_command_files.pyc
new file mode 100644
index 0000000000..7ea813740a
--- /dev/null
+++ b/build/scripts/process_command_files.pyc
diff --git a/build/scripts/process_whole_archive_option.py b/build/scripts/process_whole_archive_option.py
new file mode 100644
index 0000000000..84d29869e9
--- /dev/null
+++ b/build/scripts/process_whole_archive_option.py
@@ -0,0 +1,183 @@
+import os
+
+import process_command_files as pcf
+
+
+class ProcessWholeArchiveOption():
+    def __init__(self, arch, peers=None, libs=None):
+        self.arch = arch.upper()
+        self.peers = { x : 0 for x in peers } if peers else None
+        self.libs = { x : 0 for x in libs } if libs else None
+        self.start_wa_marker = '--start-wa'
+        self.end_wa_marker = '--end-wa'
+
+    def _match_peer_lib(self, arg, ext):
+        key = None
+        if arg.endswith(ext):
+            key = os.path.dirname(arg)
+        return key if key and self.peers and key in self.peers else None
+
+    def _match_lib(self, arg):
+        return arg if self.libs and arg in self.libs else None
+
+    def _process_arg(self, arg, ext='.a'):
+        peer_key = self._match_peer_lib(arg, ext)
+        lib_key = self._match_lib(arg)
+        if peer_key:
+            self.peers[peer_key] += 1
+        if lib_key:
+            self.libs[lib_key] += 1
+        return peer_key if peer_key else lib_key
+
+    def _check_peers(self):
+        if self.peers:
+            for key, value in self.peers.items():
+                assert value > 0, '"{}" specified in WHOLE_ARCHIVE() macro is not used on link command'.format(key)
+
+    def _construct_cmd_apple(self, args):
+        force_load_flag = '-Wl,-force_load,'
+        is_inside_wa_markers = False
+
+        cmd = []
+        for arg in args:
+            if arg.startswith(force_load_flag):
+                cmd.append(arg)
+            elif arg == self.start_wa_marker:
+                is_inside_wa_markers = True
+            elif arg == self.end_wa_marker:
+                is_inside_wa_markers = False
+            elif is_inside_wa_markers:
+                cmd.append(force_load_flag + arg)
+            else:
+                key = self._process_arg(arg)
+                cmd.append(force_load_flag + arg if key else arg)
+
+        self._check_peers()
+
+        return cmd
+
+    def _construct_cmd_win(self, args):
+        whole_archive_prefix = '/WHOLEARCHIVE:'
+        is_inside_wa_markers = False
+
+        def add_prefix(arg, need_check_peers_and_libs):
+            key = self._process_arg(arg, '.lib') if need_check_peers_and_libs else arg
+            return whole_archive_prefix + arg if key else arg
+
+        def add_whole_archive_prefix(arg, need_check_peers_and_libs):
+            if not pcf.is_cmdfile_arg(arg):
+                return add_prefix(arg, need_check_peers_and_libs)
+
+            cmd_file_path = pcf.cmdfile_path(arg)
+            cf_args = pcf.read_from_command_file(cmd_file_path)
+            with open(cmd_file_path, 'w') as afile:
+                for cf_arg in cf_args:
+                    afile.write(add_prefix(cf_arg, need_check_peers_and_libs) + "\n")
+            return arg
+
+        cmd = []
+        for arg in args:
+            if arg == self.start_wa_marker:
+                is_inside_wa_markers = True
+            elif arg == self.end_wa_marker:
+                is_inside_wa_markers = False
+            elif is_inside_wa_markers:
+                cmd.append(add_whole_archive_prefix(arg, False))
+                continue
+            elif self.peers or self.libs:
+                cmd.append(add_whole_archive_prefix(arg, True))
+            else:
+                cmd.append(arg)
+
+        self._check_peers()
+
+        return cmd
+
+    def _construct_cmd_linux(self, args):
+        whole_archive_flag = '-Wl,--whole-archive'
+        no_whole_archive_flag = '-Wl,--no-whole-archive'
+
+        def replace_markers(arg):
+            if arg == self.start_wa_marker:
+                return whole_archive_flag
+            if arg == self.end_wa_marker:
+                return no_whole_archive_flag
+            return arg
+
+        args = [replace_markers(arg) for arg in args]
+
+        cmd = []
+        is_inside_whole_archive = False
+        is_whole_archive = False
+        # We are trying not to create excessive sequences of consecutive flags
+        # -Wl,--no-whole-archive  -Wl,--whole-archive ('externally' specified
+        # flags -Wl,--[no-]whole-archive are not taken for consideration in this
+        # optimization intentionally)
+        for arg in args:
+            if arg == whole_archive_flag:
+                is_inside_whole_archive = True
+                is_whole_archive = False
+            elif arg == no_whole_archive_flag:
+                is_inside_whole_archive = False
+                is_whole_archive = False
+            else:
+                key = self._process_arg(arg)
+                if not is_inside_whole_archive:
+                    if key:
+                        if not is_whole_archive:
+                            cmd.append(whole_archive_flag)
+                            is_whole_archive = True
+                    elif is_whole_archive:
+                        cmd.append(no_whole_archive_flag)
+                        is_whole_archive = False
+
+            cmd.append(arg)
+
+        if is_whole_archive:
+            cmd.append(no_whole_archive_flag)
+
+        # There can be an empty sequence of archive files between
+        # -Wl, --whole-archive and -Wl, --no-whole-archive flags.
+        # As a result an unknown option error may occur, therefore to
+        # prevent this case we need to remove both flags from cmd.
+        # These flags affects only on subsequent archive files.
+        if len(cmd) == 2:
+            return []
+
+        self._check_peers()
+
+        return cmd
+
+    def construct_cmd(self, args):
+        if self.arch in ('DARWIN', 'IOS', 'IOSSIM'):
+            return self._construct_cmd_apple(args)
+
+        if self.arch == 'WINDOWS':
+            return self._construct_cmd_win(args)
+
+        return self._construct_cmd_linux(args)
+
+
+def get_whole_archive_peers_and_libs(args):
+    remaining_args = []
+    peers = []
+    libs = []
+    peers_flag = '--whole-archive-peers'
+    libs_flag = '--whole-archive-libs'
+
+    next_is_peer = False
+    next_is_lib = False
+    for arg in args:
+        if arg == peers_flag:
+            next_is_peer = True
+        elif arg == libs_flag:
+            next_is_lib = True
+        elif next_is_peer:
+            peers.append(arg)
+            next_is_peer = False
+        elif next_is_lib:
+            libs.append(arg)
+            next_is_lib = False
+        else:
+            remaining_args.append(arg)
+    return remaining_args, peers, libs
diff --git a/build/scripts/process_whole_archive_option.pyc b/build/scripts/process_whole_archive_option.pyc
new file mode 100644
index 0000000000..318f50bc36
--- /dev/null
+++ b/build/scripts/process_whole_archive_option.pyc
diff --git a/build/scripts/py_compile.py b/build/scripts/py_compile.py
new file mode 100755
index 0000000000..936dbe8816
--- /dev/null
+++ b/build/scripts/py_compile.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from __future__ import print_function, absolute_import, division
+
+import marshal
+import sys
+
+
+def main():
+    srcpathx, in_fname, out_fname = sys.argv[1:]
+    srcpath = srcpathx[:-1]
+
+    with open(in_fname, 'r') as in_file:
+        source = in_file.read()
+
+    code = compile(source, srcpath, 'exec', dont_inherit=True)
+
+    with open(out_fname, 'wb') as out_file:
+        marshal.dump(code, out_file)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/build/scripts/python_yndexer.py b/build/scripts/python_yndexer.py
new file mode 100644
index 0000000000..3180665387
--- /dev/null
+++ b/build/scripts/python_yndexer.py
@@ -0,0 +1,53 @@
+import os
+import sys
+import threading
+import subprocess
+
+
+def _try_to_kill(process):
+    try:
+        process.kill()
+    except Exception:
+        pass
+
+
+def touch(path):
+    if not os.path.exists(path):
+        with open(path, 'w') as _:
+            pass
+
+
+class Process(object):
+    def __init__(self, args):
+        self._process = subprocess.Popen(args)
+        self._event = threading.Event()
+        self._result = None
+        thread = threading.Thread(target=self._run)
+        thread.setDaemon(True)
+        thread.start()
+
+    def _run(self):
+        self._process.communicate()
+        self._result = self._process.returncode
+        self._event.set()
+
+    def wait(self, timeout):
+        self._event.wait(timeout=timeout)
+        _try_to_kill(self._process)
+        return self._result
+
+
+if __name__ == '__main__':
+    yndexer = sys.argv[1]
+    timeout = int(sys.argv[2])
+    output_file = sys.argv[3]
+    input_file = sys.argv[4]
+    partition_count = sys.argv[5]
+    partition_index = sys.argv[6]
+
+    process = Process([yndexer, '-f', input_file, '-y', output_file, '-c', partition_count, '-i', partition_index])
+    result = process.wait(timeout=timeout)
+
+    if result != 0:
+        print >> sys.stderr, 'Yndexing process finished with code', result
+        touch(output_file)
diff --git a/build/scripts/resolve_java_srcs.py b/build/scripts/resolve_java_srcs.py
new file mode 100644
index 0000000000..a2e6c20012
--- /dev/null
+++ b/build/scripts/resolve_java_srcs.py
@@ -0,0 +1,106 @@
+import os
+import argparse
+import re
+import sys
+
+
+def list_all_files(directory, prefix='/', hidden_files=False):
+    result = []
+    if os.path.exists(directory):
+        for i in os.listdir(directory):
+            abs_path = os.path.join(directory, i)
+            result += list_all_files(os.path.join(directory, abs_path), prefix + i + '/', hidden_files) \
+                if os.path.isdir(abs_path) else ([prefix + i] if (hidden_files or not i.startswith('.')) else [])
+    return result
+
+
+def pattern_to_regexp(p):
+    return '^' + \
+           ('/' if not p.startswith('**') else '') + \
+           re.escape(p).replace(
+               r'\*\*\/', '[_DIR_]'
+           ).replace(
+               r'\*', '[_FILE_]'
+           ).replace(
+               '[_DIR_]', '(.*/)?'
+           ).replace(
+               '[_FILE_]', '([^/]*)'
+           ) + '$'
+
+
+def resolve_java_srcs(srcdir, include_patterns, exclude_patterns, all_resources, resolve_kotlin=False, resolve_groovy=False):
+    result = {'java': [], 'not_java': [], 'kotlin': [], 'groovy': []}
+    include_patterns_normal, include_patterns_hidden, exclude_patterns_normal, exclude_patterns_hidden = [], [], [], []
+    for vis, hid, patterns in ((include_patterns_normal, include_patterns_hidden, include_patterns), (exclude_patterns_normal, exclude_patterns_hidden, exclude_patterns),):
+        for pattern in patterns:
+            if (pattern if pattern.find('/') == -1 else pattern.rsplit('/', 1)[1]).startswith('.'):
+                hid.append(pattern)
+            else:
+                vis.append(pattern)
+        re_patterns = map(pattern_to_regexp, vis + hid)
+        if sys.platform in ('win32', 'darwin'):
+            re_patterns = [re.compile(i, re.IGNORECASE) for i in re_patterns]
+        else:
+            re_patterns = [re.compile(i) for i in re_patterns]
+        vis[:], hid[:] = re_patterns[:len(vis)], re_patterns[len(vis):]
+
+    for inc_patterns, exc_patterns, with_hidden_files in (
+        (include_patterns_normal, exclude_patterns_normal, False),
+        (include_patterns_hidden, exclude_patterns_hidden, True),
+    ):
+        for f in list_all_files(srcdir, hidden_files=with_hidden_files):
+            excluded = False
+
+            for exc_re in exc_patterns:
+                if exc_re.match(f):
+                    excluded = True
+                    break
+
+            if excluded:
+                continue
+
+            for inc_re in inc_patterns:
+                if inc_re.match(f):
+                    s = os.path.normpath(f[1:])
+                    if all_resources or not (f.endswith('.java') or f.endswith('.kt') or f.endswith('.groovy')):
+                        result['not_java'].append(s)
+                    elif f.endswith('.java'):
+                        result['java'].append(os.path.join(srcdir, s))
+                    elif f.endswith('.kt') and resolve_kotlin:
+                        result['kotlin'].append(os.path.join(srcdir, s))
+                    elif f.endswith('.groovy') and resolve_groovy:
+                        result['groovy'].append(os.path.join(srcdir, s))
+                    else:
+                        result['not_java'].append(s)
+                    break
+
+    return sorted(result['java']), sorted(result['not_java']), sorted(result['kotlin']), sorted(result['groovy'])
+
+
+def do_it(directory, sources_file, resources_file, kotlin_sources_file, groovy_sources_file, include_patterns, exclude_patterns, resolve_kotlin, resolve_groovy, append, all_resources):
+    j, r, k, g = resolve_java_srcs(directory, include_patterns, exclude_patterns, all_resources, resolve_kotlin, resolve_groovy)
+    mode = 'a' if append else 'w'
+    open(sources_file, mode).writelines(i + '\n' for i in j)
+    open(resources_file, mode).writelines(i + '\n' for i in r)
+    if kotlin_sources_file:
+        open(kotlin_sources_file, mode).writelines(i + '\n' for i in k + j)
+    if groovy_sources_file:
+        open(groovy_sources_file, mode).writelines(i + '\n' for i in g + j)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-d', '--directory', required=True)
+    parser.add_argument('-s', '--sources-file', required=True)
+    parser.add_argument('-r', '--resources-file', required=True)
+    parser.add_argument('-k', '--kotlin-sources-file', default=None)
+    parser.add_argument('-g', '--groovy-sources-file', default=None)
+    parser.add_argument('--append', action='store_true', default=False)
+    parser.add_argument('--all-resources',  action='store_true', default=False)
+    parser.add_argument('--resolve-kotlin',  action='store_true', default=False)
+    parser.add_argument('--resolve-groovy', action='store_true', default=False)
+    parser.add_argument('--include-patterns', nargs='*', default=[])
+    parser.add_argument('--exclude-patterns', nargs='*', default=[])
+    args = parser.parse_args()
+
+    do_it(**vars(args))
diff --git a/build/scripts/retry.py b/build/scripts/retry.py
new file mode 100644
index 0000000000..d14170bfec
--- /dev/null
+++ b/build/scripts/retry.py
@@ -0,0 +1,29 @@
+import time
+import functools
+
+
+# Partly copy-pasted from contrib/python/retry
+def retry_func(f, exceptions=Exception, tries=-1, delay=1, max_delay=None, backoff=1):
+    _tries, _delay = tries, delay
+    while _tries:
+        try:
+            return f()
+        except exceptions as e:
+            _tries -= 1
+            if not _tries:
+                raise
+
+            time.sleep(_delay)
+            _delay *= backoff
+
+            if max_delay is not None:
+                _delay = min(_delay, max_delay)
+
+
+def retry(**retry_kwargs):
+    def decorator(func):
+        @functools.wraps(func)
+        def wrapper(*args, **kwargs):
+            return retry_func(lambda: func(*args, **kwargs), **retry_kwargs)
+        return wrapper
+    return decorator
diff --git a/build/scripts/rodata2asm.py b/build/scripts/rodata2asm.py
new file mode 100644
index 0000000000..555639499f
--- /dev/null
+++ b/build/scripts/rodata2asm.py
@@ -0,0 +1,31 @@
+import os
+import argparse
+
+
+def main():
+    parser = argparse.ArgumentParser(description='Convert rodata into asm source with embedded file content')
+    parser.add_argument('symbol', help='symvol name exported from generated filr')
+    parser.add_argument('rodata', help='input .rodata file path')
+    parser.add_argument('asm', type=argparse.FileType('w', encoding='UTF-8'), help='destination .asm file path')
+    parser.add_argument('--elf', action='store_true')
+
+    args = parser.parse_args()
+
+    file_size = os.path.getsize(args.rodata)
+
+    args.asm.write('global ' + args.symbol + '\n')
+    args.asm.write('global ' + args.symbol + 'Size' + '\n')
+    args.asm.write('SECTION .rodata ALIGN=16\n')
+    args.asm.write(args.symbol + ':\nincbin "' + args.rodata + '"\n')
+    args.asm.write('align 4, db 0\n')
+    args.asm.write(args.symbol + 'Size:\ndd ' + str(file_size) + '\n')
+
+    if args.elf:
+        args.asm.write('size ' + args.symbol + ' ' + str(file_size) + '\n')
+        args.asm.write('size ' + args.symbol + 'Size 4\n')
+
+    args.asm.close()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/run_ios_simulator.py b/build/scripts/run_ios_simulator.py
new file mode 100644
index 0000000000..052c855b77
--- /dev/null
+++ b/build/scripts/run_ios_simulator.py
@@ -0,0 +1,79 @@
+import argparse
+import json
+import os
+import subprocess
+import sys
+
+
+def just_do_it():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--action", choices=["create", "spawn", "kill"])
+    parser.add_argument("--simctl", help="simctl binary path")
+    parser.add_argument("--profiles", help="profiles path")
+    parser.add_argument("--device-dir", help="devices directory")
+    parser.add_argument("--device-name", help="temp device name")
+    args, tail = parser.parse_known_args()
+    if args.action == 'create':
+        action_create(args.simctl, args.profiles, args.device_dir, args.device_name, tail)
+    elif args.action == "spawn":
+        action_spawn(args.simctl, args.profiles, args.device_dir, args.device_name, tail)
+    elif args.action == "kill":
+        action_kill(args.simctl, args.profiles, args.device_dir, args.device_name)
+
+
+def action_create(simctl, profiles, device_dir, name, args):
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--device-type", default="com.apple.CoreSimulator.SimDeviceType.iPhone-X")
+    parser.add_argument("--device-runtime", default="com.apple.CoreSimulator.SimRuntime.iOS-12-1")
+    args = parser.parse_args(args)
+    all_devices = list(get_all_devices(simctl, profiles, device_dir))
+    if filter(lambda x: x["name"] == name, all_devices):
+        raise Exception("Device named {} already exists".format(name))
+    subprocess.check_call([simctl, "--profiles", profiles, "--set", device_dir, "create", name, args.device_type, args.device_runtime])
+    created = filter(lambda x: x["name"] == name, get_all_devices(simctl, profiles, device_dir))
+    if not created:
+        raise Exception("Creation error: temp device named {} not found".format(name))
+    created = created[0]
+    if created["availability"] != "(available)":
+        raise Exception("Creation error: temp device {} status is {} ((available) expected)".format(name, created["availability"]))
+
+
+def action_spawn(simctl, profiles, device_dir, name, args):
+    device = filter(lambda x: x["name"] == name, get_all_devices(simctl, profiles, device_dir))
+    if not device:
+        raise Exception("Can't spawn process: device named {} not found".format(name))
+    if len(device) > 1:
+        raise Exception("Can't spawn process: too many devices named {} found".format(name))
+    device = device[0]
+    os.execv(simctl, [simctl, "--profiles", profiles, "--set", device_dir, "spawn", device["udid"]] + args)
+
+
+def action_kill(simctl, profiles, device_dir, name):
+    device = filter(lambda x: x["name"] == name, get_all_devices(simctl, profiles, device_dir))
+    if not device:
+        print >> sys.stderr, "Device named {} not found; do nothing".format(name)
+        return
+    if len(device) > 1:
+        raise Exception("Can't remove: too many devices named {}:\n{}".format(name, '\n'.join(i for i in device)))
+    device = device[0]
+    os.execv(simctl, [simctl, "--profiles", profiles, "--set", device_dir, "delete", device["udid"]])
+
+
+def get_all_devices(simctl, profiles, device_dir):
+    p = subprocess.Popen([simctl, "--profiles", profiles, "--set", device_dir, "list", "--json", "devices"], stdout=subprocess.PIPE)
+    out, _ = p.communicate()
+    rc = p.wait()
+    if rc:
+        raise Exception("Devices list command return code is {}\nstdout:\n{}".format(rc, out))
+    raw_object = json.loads(out)
+    if "devices" not in raw_object:
+        raise Exception("Devices not found in\n{}".format(json.dumps(raw_object)))
+    raw_object = raw_object["devices"]
+    for os_name, devices in raw_object.items():
+        for device in devices:
+            device["os_name"] = os_name
+            yield device
+
+
+if __name__ == '__main__':
+    just_do_it()
diff --git a/build/scripts/run_javac.py b/build/scripts/run_javac.py
new file mode 100644
index 0000000000..c35546e0fe
--- /dev/null
+++ b/build/scripts/run_javac.py
@@ -0,0 +1,122 @@
+import sys
+import subprocess
+import optparse
+import re
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.disable_interspersed_args()
+    parser.add_option('--sources-list')
+    parser.add_option('--verbose', default=False, action='store_true')
+    parser.add_option('--remove-notes', default=False, action='store_true')
+    parser.add_option('--ignore-errors', default=False, action='store_true')
+    parser.add_option('--kotlin', default=False, action='store_true')
+    return parser.parse_args()
+
+
+COLORING = {
+    r'^(?P<path>.*):(?P<line>\d*): error: (?P<msg>.*)': lambda m: '[[unimp]]{path}[[rst]]:[[alt2]]{line}[[rst]]: [[c:light-red]]error[[rst]]: [[bad]]{msg}[[rst]]'.format(
+        path=m.group('path'),
+        line=m.group('line'),
+        msg=m.group('msg'),
+    ),
+    r'^(?P<path>.*):(?P<line>\d*): warning: (?P<msg>.*)': lambda m: '[[unimp]]{path}[[rst]]:[[alt2]]{line}[[rst]]: [[c:light-yellow]]warning[[rst]]: {msg}'.format(
+        path=m.group('path'),
+        line=m.group('line'),
+        msg=m.group('msg'),
+    ),
+    r'^warning: ': lambda m: '[[c:light-yellow]]warning[[rst]]: ',
+    r'^error: (?P<msg>.*)': lambda m: '[[c:light-red]]error[[rst]]: [[bad]]{msg}[[rst]]'.format(msg=m.group('msg')),
+    r'^Note: ': lambda m: '[[c:light-cyan]]Note[[rst]]: ',
+}
+
+
+def colorize(err):
+    for regex, sub in COLORING.iteritems():
+        err = re.sub(regex, sub, err, flags=re.MULTILINE)
+    return err
+
+
+def remove_notes(err):
+    return '\n'.join([line for line in err.split('\n') if not line.startswith('Note:')])
+
+
+def find_javac(cmd):
+    if not cmd:
+        return None
+    if cmd[0].endswith('javac') or cmd[0].endswith('javac.exe'):
+        return cmd[0]
+    if len(cmd) > 2 and cmd[1].endswith('build_java_with_error_prone.py'):
+        for javas in ('java', 'javac'):
+            if cmd[2].endswith(javas) or cmd[2].endswith(javas + '.exe'):
+                return cmd[2]
+    return None
+
+
+# temporary, for jdk8/jdk9+ compatibility
+def fix_cmd(cmd):
+    if not cmd:
+        return cmd
+    javac = find_javac(cmd)
+    if not javac:
+        return cmd
+    p = subprocess.Popen([javac, '-version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    out, err = out.strip(), err.strip()
+    for prefix in ('javac 1.8', 'java version "1.8'):
+        for raw_out in ((out or ''), (err or '')):
+            for line in raw_out.split('\n'):
+                if line.startswith(prefix):
+                    res = []
+                    i = 0
+                    while i < len(cmd):
+                        for option in ('--add-exports', '--add-modules'):
+                            if cmd[i] == option:
+                                i += 1
+                                break
+                            elif cmd[i].startswith(option + '='):
+                                break
+                        else:
+                            res.append(cmd[i])
+                        i += 1
+                    return res
+    return cmd
+
+
+def main():
+    opts, cmd = parse_args()
+
+    with open(opts.sources_list) as f:
+        input_files = f.read().strip().split()
+
+    if opts.kotlin:
+        input_files = [i for i in input_files if i.endswith('.kt')]
+
+    if not input_files:
+        if opts.verbose:
+            sys.stderr.write('No files to compile, javac is not launched.\n')
+
+    else:
+        p = subprocess.Popen(fix_cmd(cmd), stderr=subprocess.PIPE)
+        _, err = p.communicate()
+        rc = p.wait()
+
+        if opts.remove_notes:
+            err = remove_notes(err)
+
+        try:
+            err = colorize(err)
+
+        except Exception:
+            pass
+
+        if opts.ignore_errors and rc:
+            sys.stderr.write('error: javac actually failed with exit code {}\n'.format(rc))
+            rc = 0
+        sys.stderr.write(err)
+        sys.exit(rc)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/run_junit.py b/build/scripts/run_junit.py
new file mode 100644
index 0000000000..089f149f72
--- /dev/null
+++ b/build/scripts/run_junit.py
@@ -0,0 +1,65 @@
+import os
+import sys
+
+SHUTDOWN_SIGNAL = 'SIGUSR1'
+
+
+class SignalInterruptionError(Exception):
+    pass
+
+
+def on_shutdown(s, f):
+    raise SignalInterruptionError()
+
+
+def main():
+    args = sys.argv[1:]
+
+    def execve():
+        os.execve(args[0], args, os.environ)
+
+    jar_binary = args[args.index('--jar-binary') + 1]
+    java_bin_dir = os.path.dirname(jar_binary)
+    jstack_binary = os.path.join(java_bin_dir, 'jstack')
+
+    if not os.path.exists(jstack_binary):
+        sys.stderr.write("jstack is missing: {}\n".format(jstack_binary))
+        execve()
+
+    import signal
+
+    signum = getattr(signal, SHUTDOWN_SIGNAL, None)
+
+    if signum is None:
+        execve()
+
+    import subprocess
+
+    proc = subprocess.Popen(args)
+    signal.signal(signum, on_shutdown)
+    timeout = False
+
+    try:
+        proc.wait()
+    except SignalInterruptionError:
+        sys.stderr.write("\nGot {} signal: going to shutdown junit\n".format(signum))
+        # Dump stack traces
+        subprocess.call([jstack_binary, str(proc.pid)], stdout=sys.stderr)
+        # Kill junit - for more info see DEVTOOLS-7636
+        os.kill(proc.pid, signal.SIGKILL)
+        proc.wait()
+        timeout = True
+
+    if proc.returncode:
+        sys.stderr.write('java exit code: {}\n'.format(proc.returncode))
+        if timeout:
+            # In case of timeout return specific exit code
+            # https://a.yandex-team.ru/arc/trunk/arcadia/devtools/ya/test/const/__init__.py?rev=r8578188#L301
+            proc.returncode = 10
+            sys.stderr.write('java exit code changed to {}\n'.format(proc.returncode))
+
+    return proc.returncode
+
+
+if __name__ == '__main__':
+    exit(main())
diff --git a/build/scripts/run_llvm_dsymutil.py b/build/scripts/run_llvm_dsymutil.py
new file mode 100644
index 0000000000..4f43362ad9
--- /dev/null
+++ b/build/scripts/run_llvm_dsymutil.py
@@ -0,0 +1,11 @@
+import os
+import sys
+import subprocess
+
+
+if __name__ == '__main__':
+    with open(os.devnull, 'w') as fnull:
+        p = subprocess.Popen(sys.argv[1:], shell=False, stderr=fnull, stdout=sys.stdout)
+
+    p.communicate()
+    sys.exit(p.returncode)
diff --git a/build/scripts/run_msvc_wine.py b/build/scripts/run_msvc_wine.py
new file mode 100644
index 0000000000..eb5ed3eba5
--- /dev/null
+++ b/build/scripts/run_msvc_wine.py
@@ -0,0 +1,586 @@
+import sys
+import os
+import re
+import subprocess
+import signal
+import time
+import json
+import argparse
+import errno
+
+import process_command_files as pcf
+import process_whole_archive_option as pwa
+
+
+procs = []
+build_kekeke = 45
+
+
+def stringize(s):
+    return s.encode('utf-8') if isinstance(s, unicode) else s
+
+
+def run_subprocess(*args, **kwargs):
+    if 'env' in kwargs:
+        kwargs['env'] = {stringize(k): stringize(v) for k, v in kwargs['env'].iteritems()}
+
+    p = subprocess.Popen(*args, **kwargs)
+
+    procs.append(p)
+
+    return p
+
+
+def run_subprocess_with_timeout(timeout, args):
+    attempts_remaining = 5
+    delay = 1
+    p = None
+    while True:
+        try:
+            p = run_subprocess(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            stdout, stderr = p.communicate(timeout=timeout)
+            return p, stdout, stderr
+        except subprocess.TimeoutExpired as e:
+            print >>sys.stderr, 'timeout running {0}, error {1}, delay {2} seconds'.format(args, str(e), delay)
+            if p is not None:
+                try:
+                    p.kill()
+                    p.wait(timeout=1)
+                except Exception:
+                    pass
+            attempts_remaining -= 1
+            if attempts_remaining == 0:
+                raise
+            time.sleep(delay)
+            delay = min(2 * delay, 4)
+
+
+def terminate_slaves():
+    for p in procs:
+        try:
+            p.terminate()
+        except Exception:
+            pass
+
+
+def sig_term(sig, fr):
+    terminate_slaves()
+    sys.exit(sig)
+
+
+def subst_path(l):
+    if len(l) > 3:
+        if l[:3].lower() in ('z:\\', 'z:/'):
+            return l[2:].replace('\\', '/')
+
+    return l
+
+
+def call_wine_cmd_once(wine, cmd, env, mode):
+    p = run_subprocess(wine + cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=env, close_fds=True, shell=False)
+
+    output = find_cmd_out(cmd)
+    error = None
+    if output is not None and os.path.exists(output):
+        try:
+            os.remove(output)
+        except OSError as e:
+            if e.errno != errno.ENOENT:
+                error = e
+        except Exception as e:
+            error = e
+
+    if error is not None:
+        print >> sys.stderr, 'Output {} already exists and we have failed to remove it: {}'.format(output, error)
+
+    # print >>sys.stderr, cmd, env, wine
+
+    stdout_and_stderr, _ = p.communicate()
+
+    return_code = p.returncode
+    if not stdout_and_stderr:
+        if return_code != 0:
+            raise Exception('wine did something strange')
+
+        return return_code
+    elif ' : fatal error ' in stdout_and_stderr:
+        return_code = 1
+    elif ' : error ' in stdout_and_stderr:
+        return_code = 2
+
+    lines = [x.strip() for x in stdout_and_stderr.split('\n')]
+
+    prefixes = [
+        'Microsoft (R)',
+        'Copyright (C)',
+        'Application tried to create a window',
+        'The graphics driver is missing',
+        'Could not load wine-gecko',
+        'wine: configuration in',
+        'wine: created the configuration directory',
+        'libpng warning:'
+    ]
+
+    suffixes = [
+        '.c',
+        '.cxx',
+        '.cc',
+        '.cpp',
+        '.masm',
+    ]
+
+    substrs = [
+        'Creating library Z:',
+        'err:heap',
+        'err:menubuilder:',
+        'err:msvcrt',
+        'err:ole:',
+        'err:wincodecs:',
+        'err:winediag:',
+    ]
+
+    def good_line(l):
+        for x in prefixes:
+            if l.startswith(x):
+                return False
+
+        for x in suffixes:
+            if l.endswith(x):
+                return False
+
+        for x in substrs:
+            if x in l:
+                return False
+
+        return True
+
+    def filter_lines():
+        for l in lines:
+            if good_line(l):
+                yield subst_path(l.strip())
+
+    stdout_and_stderr = '\n'.join(filter_lines()).strip()
+
+    if stdout_and_stderr:
+        print >>sys.stderr, stdout_and_stderr
+
+    return return_code
+
+
+def prepare_vc(fr, to):
+    for p in os.listdir(fr):
+        fr_p = os.path.join(fr, p)
+        to_p = os.path.join(to, p)
+
+        if not os.path.exists(to_p):
+            print >>sys.stderr, 'install %s -> %s' % (fr_p, to_p)
+
+            os.link(fr_p, to_p)
+
+
+def run_slave():
+    args = json.loads(sys.argv[3])
+    wine = sys.argv[1]
+
+    signal.signal(signal.SIGTERM, sig_term)
+
+    if args.get('tout', None):
+        signal.signal(signal.SIGALRM, sig_term)
+        signal.alarm(args['tout'])
+
+    tout = 0.1
+
+    while True:
+        try:
+            return call_wine_cmd_once([wine], args['cmd'], args['env'], args['mode'])
+        except Exception as e:
+            print >>sys.stderr, '%s, will retry in %s' % (str(e), tout)
+
+            time.sleep(tout)
+            tout = min(2 * tout, 4)
+
+
+def find_cmd_out(args):
+    for arg in args:
+        if arg.startswith('/Fo'):
+            return arg[3:]
+
+        if arg.startswith('/OUT:'):
+            return arg[5:]
+
+
+def calc_zero_cnt(data):
+    zero_cnt = 0
+
+    for ch in data:
+        if ch == chr(0):
+            zero_cnt += 1
+
+    return zero_cnt
+
+
+def is_good_file(p):
+    if not os.path.isfile(p):
+        return False
+
+    if os.path.getsize(p) < 300:
+        return False
+
+    asm_pattern = re.compile(r'asm(\.\w+)?\.obj$')
+    if asm_pattern.search(p):
+        pass
+    elif p.endswith('.obj'):
+        with open(p, 'rb') as f:
+            prefix = f.read(200)
+
+            if ord(prefix[0]) != 0:
+                return False
+
+            if ord(prefix[1]) != 0:
+                return False
+
+            if ord(prefix[2]) != 0xFF:
+                return False
+
+            if ord(prefix[3]) != 0xFF:
+                return False
+
+            if calc_zero_cnt(prefix) > 195:
+                return False
+
+            f.seek(-100, os.SEEK_END)
+            last = f.read(100)
+
+            if calc_zero_cnt(last) > 95:
+                return False
+
+            if last[-1] != chr(0):
+                return False
+    elif p.endswith('.lib'):
+        with open(p, 'rb') as f:
+            if f.read(7) != '!<arch>':
+                return False
+
+    return True
+
+
+RED = '\x1b[31;1m'
+GRAY = '\x1b[30;1m'
+RST = '\x1b[0m'
+MGT = '\x1b[35m'
+YEL = '\x1b[33m'
+GRN = '\x1b[32m'
+CYA = '\x1b[36m'
+
+
+def colorize_strings(l):
+    p = l.find("'")
+
+    if p >= 0:
+        yield l[:p]
+
+        l = l[p + 1:]
+
+        p = l.find("'")
+
+        if p >= 0:
+            yield CYA + "'" + subst_path(l[:p]) + "'" + RST
+
+            for x in colorize_strings(l[p + 1:]):
+                yield x
+        else:
+            yield "'" + l
+    else:
+        yield l
+
+
+def colorize_line(l):
+    lll = l
+
+    try:
+        parts = []
+
+        if l.startswith('(compiler file'):
+            return ''.join(colorize_strings(l))
+
+        if l.startswith('/'):
+            p = l.find('(')
+            parts.append(GRAY + l[:p] + RST)
+            l = l[p:]
+
+        if l and l.startswith('('):
+            p = l.find(')')
+            parts.append(':' + MGT + l[1:p] + RST)
+            l = l[p + 1:]
+
+        if l:
+            if l.startswith(' : '):
+                l = l[1:]
+
+            if l.startswith(': error'):
+                parts.append(': ' + RED + 'error' + RST)
+                l = l[7:]
+            elif l.startswith(': warning'):
+                parts.append(': ' + YEL + 'warning' + RST)
+                l = l[9:]
+            elif l.startswith(': note'):
+                parts.append(': ' + GRN + 'note' + RST)
+                l = l[6:]
+            elif l.startswith('fatal error'):
+                parts.append(RED + 'fatal error' + RST)
+                l = l[11:]
+
+        if l:
+            parts.extend(colorize_strings(l))
+
+        return ''.join(parts)
+    except Exception:
+        return lll
+
+
+def colorize(out):
+    return '\n'.join(colorize_line(l) for l in out.split('\n'))
+
+
+def trim_path(path, winepath):
+    p1, p1_stdout, p1_stderr = run_subprocess_with_timeout(60, [winepath, '-w', path])
+    win_path = p1_stdout.strip()
+
+    if p1.returncode != 0 or not win_path:
+        # Fall back to only winepath -s
+        win_path = path
+
+    p2, p2_stdout, p2_stderr = run_subprocess_with_timeout(60, [winepath, '-s', win_path])
+    short_path = p2_stdout.strip()
+
+    check_path = short_path
+    if check_path.startswith(('Z:', 'z:')):
+        check_path = check_path[2:]
+
+    if not check_path[1:].startswith((path[1:4], path[1:4].upper())):
+        raise Exception(
+            'Cannot trim path {}; 1st winepath exit code: {}, stdout:\n{}\n  stderr:\n{}\n 2nd winepath exit code: {}, stdout:\n{}\n  stderr:\n{}'.format(
+            path, p1.returncode, p1_stdout, p1_stderr, p2.returncode, p2_stdout, p2_stderr
+        ))
+
+    return short_path
+
+
+def downsize_path(path, short_names):
+    flag = ''
+    if path.startswith('/Fo'):
+        flag = '/Fo'
+        path = path[3:]
+
+    for full_name, short_name in short_names.items():
+        if path.startswith(full_name):
+            path = path.replace(full_name, short_name)
+
+    return flag + path
+
+
+def make_full_path_arg(arg, bld_root, short_root):
+    if arg[0] != '/' and len(os.path.join(bld_root, arg)) > 250:
+        return os.path.join(short_root, arg)
+    return arg
+
+
+def fix_path(p):
+    topdirs = ['/%s/' % d for d in os.listdir('/')]
+
+    def abs_path_start(path, pos):
+        if pos < 0:
+            return False
+        return pos == 0 or path[pos - 1] == ':'
+
+    pp = None
+    for pr in topdirs:
+        pp2 = p.find(pr)
+        if abs_path_start(p, pp2) and (pp is None or pp > pp2):
+            pp = pp2
+    if pp is not None:
+        return p[:pp] + 'Z:' + p[pp:].replace('/', '\\')
+    if p.startswith('/Fo'):
+        return '/Fo' + p[3:].replace('/', '\\')
+    return p
+
+
+def process_free_args(args, wine, bld_root, mode):
+    whole_archive_prefix = '/WHOLEARCHIVE:'
+    short_names = {}
+    winepath = os.path.join(os.path.dirname(wine), 'winepath')
+    short_names[bld_root] = trim_path(bld_root, winepath)
+    # Slow for no benefit.
+    # arc_root = args.arcadia_root
+    # short_names[arc_root] = trim_path(arc_root, winepath)
+
+    free_args, wa_peers, wa_libs = pwa.get_whole_archive_peers_and_libs(pcf.skip_markers(args))
+
+    process_link = lambda x: make_full_path_arg(x, bld_root, short_names[bld_root]) if mode in ('link', 'lib') else x
+
+    def process_arg(arg):
+        with_wa_prefix = arg.startswith(whole_archive_prefix)
+        prefix = whole_archive_prefix if with_wa_prefix else ''
+        without_prefix_arg = arg[len(prefix):]
+        return prefix + fix_path(process_link(downsize_path(without_prefix_arg, short_names)))
+
+    result = []
+    for arg in free_args:
+        if pcf.is_cmdfile_arg(arg):
+            cmd_file_path = pcf.cmdfile_path(arg)
+            cf_args = pcf.read_from_command_file(cmd_file_path)
+            with open(cmd_file_path, 'w') as afile:
+                for cf_arg in cf_args:
+                    afile.write(process_arg(cf_arg) + "\n")
+            result.append(arg)
+        else:
+            result.append(process_arg(arg))
+    return pwa.ProcessWholeArchiveOption('WINDOWS', wa_peers, wa_libs).construct_cmd(result)
+
+
+def run_main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('wine', action='store')
+    parser.add_argument('-v', action='store', dest='version', default='120')
+    parser.add_argument('-I', action='append', dest='incl_paths')
+    parser.add_argument('mode', action='store')
+    parser.add_argument('arcadia_root', action='store')
+    parser.add_argument('arcadia_build_root', action='store')
+    parser.add_argument('binary', action='store')
+    parser.add_argument('free_args', nargs=argparse.REMAINDER)
+    # By now just unpack. Ideally we should fix path and pack arguments back into command file
+    args = parser.parse_args()
+
+    wine = args.wine
+    mode = args.mode
+    binary = args.binary
+    version = args.version
+    incl_paths = args.incl_paths
+    bld_root = args.arcadia_build_root
+    free_args = args.free_args
+
+    wine_dir = os.path.dirname(os.path.dirname(wine))
+    bin_dir = os.path.dirname(binary)
+    tc_dir = os.path.dirname(os.path.dirname(os.path.dirname(bin_dir)))
+    if not incl_paths:
+        incl_paths = [tc_dir + '/VC/include', tc_dir + '/include']
+
+    cmd_out = find_cmd_out(free_args)
+
+    env = os.environ.copy()
+
+    env.pop('DISPLAY', None)
+
+    env['WINEDLLOVERRIDES'] = 'msvcr{}=n'.format(version)
+    env['WINEDEBUG'] = 'fixme-all'
+    env['INCLUDE'] = ';'.join(fix_path(p) for p in incl_paths)
+    env['VSINSTALLDIR'] = fix_path(tc_dir)
+    env['VCINSTALLDIR'] = fix_path(tc_dir + '/VC')
+    env['WindowsSdkDir'] = fix_path(tc_dir)
+    env['LIBPATH'] = fix_path(tc_dir + '/VC/lib/amd64')
+    env['LIB'] = fix_path(tc_dir + '/VC/lib/amd64')
+    env['LD_LIBRARY_PATH'] = ':'.join(wine_dir + d for d in ['/lib', '/lib64', '/lib64/wine'])
+
+    cmd = [binary] + process_free_args(free_args, wine, bld_root, mode)
+
+    for x in ('/NOLOGO', '/nologo', '/FD'):
+        try:
+            cmd.remove(x)
+        except ValueError:
+            pass
+
+    def run_process(sleep, tout):
+        if sleep:
+            time.sleep(sleep)
+
+        args = {
+            'cmd': cmd,
+            'env': env,
+            'mode': mode,
+            'tout': tout
+        }
+
+        slave_cmd = [sys.executable, sys.argv[0], wine, 'slave', json.dumps(args)]
+        p = run_subprocess(slave_cmd, stderr=subprocess.STDOUT, stdout=subprocess.PIPE, shell=False)
+        out, _ = p.communicate()
+        return p.wait(), out
+
+    def print_err_log(log):
+        if not log:
+            return
+        if mode == 'cxx':
+            log = colorize(log)
+        print >>sys.stderr, log
+
+    tout = 200
+
+    while True:
+        rc, out = run_process(0, tout)
+
+        if rc in (-signal.SIGALRM, signal.SIGALRM):
+            print_err_log(out)
+            print >>sys.stderr, '##append_tag##time out'
+        elif out and ' stack overflow ' in out:
+            print >>sys.stderr, '##append_tag##stack overflow'
+        elif out and 'recvmsg: Connection reset by peer' in out:
+            print >>sys.stderr, '##append_tag##wine gone'
+        elif out and 'D8037' in out:
+            print >>sys.stderr, '##append_tag##repair wine'
+
+            try:
+                os.unlink(os.path.join(os.environ['WINEPREFIX'], '.update-timestamp'))
+            except Exception as e:
+                print >>sys.stderr, e
+
+        else:
+            print_err_log(out)
+
+            # non-zero return code - bad, return it immediately
+            if rc:
+                print >>sys.stderr, '##win_cmd##' + ' '.join(cmd)
+                print >>sys.stderr, '##args##' + ' '.join(free_args)
+                return rc
+
+            # check for output existence(if we expect it!) and real length
+            if cmd_out:
+                if is_good_file(cmd_out):
+                    return 0
+                else:
+                    # retry!
+                    print >>sys.stderr, '##append_tag##no output'
+            else:
+                return 0
+
+        tout *= 3
+
+
+def main():
+    prefix_suffix = os.environ.pop('WINEPREFIX_SUFFIX', None)
+    if prefix_suffix is not None:
+        prefix = os.environ.pop('WINEPREFIX', None)
+        if prefix is not None:
+            os.environ['WINEPREFIX'] = os.path.join(prefix, prefix_suffix)
+
+    # just in case
+    signal.alarm(2000)
+
+    if sys.argv[2] == 'slave':
+        func = run_slave
+    else:
+        func = run_main
+
+    try:
+        try:
+            sys.exit(func())
+        finally:
+            terminate_slaves()
+    except KeyboardInterrupt:
+        sys.exit(4)
+    except Exception as e:
+        print >>sys.stderr, str(e)
+
+        sys.exit(3)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/run_sonar.py b/build/scripts/run_sonar.py
new file mode 100644
index 0000000000..761cc34b78
--- /dev/null
+++ b/build/scripts/run_sonar.py
@@ -0,0 +1,121 @@
+import os
+import sys
+import zipfile
+import tarfile
+import subprocess as sp
+import optparse
+import shutil
+import xml.etree.ElementTree as et
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.add_option(
+        '--classes-jar-path',
+        dest='classes_jar_paths',
+        action='append',
+        default=[],
+    )
+    parser.add_option('--sources-jar-path')
+    parser.add_option('--sonar-scanner-jar-path')
+    parser.add_option('--sonar-scanner-main-class')
+    parser.add_option('--java-coverage-merged-tar')
+    parser.add_option('--java-binary-path')
+    parser.add_option('--log-path')
+    parser.add_option('--gcov-report-path')
+    parser.add_option('--source-root')
+    parser.add_option('--java-args', action='append', default=[])
+    return parser.parse_args()
+
+
+def extract_zip_file(zip_file_path, dest_dir):
+    with zipfile.ZipFile(zip_file_path) as arch:
+        arch.extractall(dest_dir)
+
+
+def get_source_real_path(source_root, path):
+    parts = os.path.normpath(path).split(os.path.sep)
+    for i in xrange(len(parts)):
+        if os.path.exists(os.path.join(source_root, *parts[i:])):
+            return os.path.join(*parts[i:])
+    return None
+
+
+def collect_cpp_sources(report, source_root, destination):
+    sources = set()
+    with open(report) as f:
+        root = et.fromstring(f.read())
+    for f in root.findall('.//class[@filename]'):
+        real_filename = get_source_real_path(source_root, f.attrib['filename'])
+        if real_filename:
+            f.attrib['filename'] = real_filename
+            sources.add(real_filename)
+    with open(report, 'w') as f:
+        pref = '''<?xml version="1.0" ?>
+<!DOCTYPE coverage
+  SYSTEM 'http://cobertura.sourceforge.net/xml/coverage-03.dtd'>\n'''
+        f.write(pref + et.tostring(root, encoding='utf-8') + '\n\n')
+    for src in sources:
+        dst = os.path.join(destination, src)
+        src = os.path.join(source_root, src)
+        if os.path.isfile(src):
+            if not os.path.exists(os.path.dirname(dst)):
+                os.makedirs(os.path.dirname(dst))
+            os.link(src, dst)
+
+
+def main(opts, props_args):
+    sources_dir = os.path.abspath('src')
+    base_props_args = ['-Dsonar.sources=' + sources_dir]
+    os.mkdir(sources_dir)
+    if opts.sources_jar_path:
+        extract_zip_file(opts.sources_jar_path, sources_dir)
+    if opts.gcov_report_path:
+        collect_cpp_sources(opts.gcov_report_path, opts.source_root, sources_dir)
+        base_props_args += ['-Dsonar.projectBaseDir=' + sources_dir, '-Dsonar.cxx.coverage.reportPath=' + opts.gcov_report_path]
+
+    if opts.classes_jar_paths:
+        classes_dir = os.path.abspath('cls')
+        os.mkdir(classes_dir)
+
+        for classes_jar_path in opts.classes_jar_paths:
+            extract_zip_file(classes_jar_path, classes_dir)
+
+        base_props_args.append('-Dsonar.java.binaries=' + classes_dir)
+
+    if opts.java_coverage_merged_tar:
+        jacoco_report_path = os.path.abspath('jacoco.exec')
+        with open(jacoco_report_path, 'w') as dest:
+            with tarfile.open(opts.java_coverage_merged_tar) as tar:
+                for src in tar:
+                    extracted = tar.extractfile(src)
+                    if extracted is not None:
+                        shutil.copyfileobj(extracted, dest)
+
+        base_props_args += [
+            '-Dsonar.core.codeCoveragePlugin=jacoco',
+            '-Dsonar.jacoco.reportPath=' + jacoco_report_path
+        ]
+    java_args = ['-{}'.format(i) for i in opts.java_args] + ['-Djava.net.preferIPv6Addresses=true', '-Djava.net.preferIPv4Addresses=false']
+
+    sonar_cmd = [
+        opts.java_binary_path,
+    ] + java_args + [
+        '-classpath',
+        opts.sonar_scanner_jar_path,
+    ] + base_props_args + props_args + [opts.sonar_scanner_main_class, '-X']
+
+    p = sp.Popen(sonar_cmd, stdout=sp.PIPE, stderr=sp.STDOUT)
+    out, _ = p.communicate()
+
+    sys.stderr.write(out)
+    with open(opts.log_path, 'a') as f:
+        f.write(out)
+
+    sys.exit(p.returncode)
+
+
+if __name__ == '__main__':
+    opts, args = parse_args()
+    props_args = ['-D' + arg for arg in args]
+    main(opts, props_args)
diff --git a/build/scripts/setup_java_tmpdir.py b/build/scripts/setup_java_tmpdir.py
new file mode 100644
index 0000000000..e478d4aa96
--- /dev/null
+++ b/build/scripts/setup_java_tmpdir.py
@@ -0,0 +1,40 @@
+import os
+import sys
+import platform
+import subprocess
+
+
+def fix_tmpdir(cmd):
+    if not cmd:
+        return cmd
+    java_id, option_name = None, None
+    for i, java in enumerate(cmd):
+        if java.endswith('java') or java.endswith('java.exe'):
+            java_id = i
+            option_name = '-Djava.io.tmpdir='
+            break
+        if java.endswith('javac') or java.endswith('javac.exe'):
+            java_id = i
+            option_name = '-J-Djava.io.tmpdir='
+            break
+    if java_id is None:
+        return cmd
+    for arg in cmd[java_id:]:
+        if arg.startswith(option_name):
+            return cmd
+    tmpdir = os.environ.get('TMPDIR') or os.environ.get('TEMPDIR')
+    if not tmpdir:
+        return cmd
+    return cmd[:java_id + 1] + ['{}{}'.format(option_name, tmpdir)] + cmd[java_id + 1:]
+
+
+def just_do_it():
+    args = fix_tmpdir(sys.argv[1:])
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(args).wait())
+    else:
+        os.execv(args[0], args)
+
+
+if __name__ == '__main__':
+    just_do_it()
diff --git a/build/scripts/sky.py b/build/scripts/sky.py
new file mode 100644
index 0000000000..b703af7ed1
--- /dev/null
+++ b/build/scripts/sky.py
@@ -0,0 +1,43 @@
+import logging
+import os
+import subprocess
+
+import fetch_from
+
+
+class UnsupportedProtocolException(Exception):
+    pass
+
+
+def executable_path():
+    return "/usr/local/bin/sky"
+
+
+def is_avaliable():
+    if not os.path.exists(executable_path()):
+        return False
+    try:
+        subprocess.check_output([executable_path(), "--version"])
+        return True
+    except subprocess.CalledProcessError:
+        return False
+    except OSError:
+        return False
+
+
+def fetch(skynet_id, file_name, timeout=None):
+    if not is_avaliable():
+        raise UnsupportedProtocolException("Skynet is not available")
+
+    target_dir = os.path.abspath(fetch_from.uniq_string_generator())
+    os.mkdir(target_dir)
+
+    cmd_args = [executable_path(), "get", "-N", "Backbone", "--user", "--wait", "--dir", target_dir, skynet_id]
+    if timeout is not None:
+        cmd_args += ["--timeout", str(timeout)]
+
+    logging.info("Call skynet with args: %s", cmd_args)
+    stdout = subprocess.check_output(cmd_args).strip()
+    logging.debug("Skynet call with args %s is finished, result is %s", cmd_args, stdout)
+
+    return os.path.join(target_dir, file_name)
diff --git a/build/scripts/stderr2stdout.py b/build/scripts/stderr2stdout.py
new file mode 100644
index 0000000000..0e510da373
--- /dev/null
+++ b/build/scripts/stderr2stdout.py
@@ -0,0 +1,6 @@
+import subprocess
+import sys
+
+if __name__ == '__main__':
+    assert len(sys.argv) > 1
+    sys.exit(subprocess.Popen(sys.argv[1:], stderr=sys.stdout).wait())
diff --git a/build/scripts/stdout2stderr.py b/build/scripts/stdout2stderr.py
new file mode 100644
index 0000000000..d7861fdda3
--- /dev/null
+++ b/build/scripts/stdout2stderr.py
@@ -0,0 +1,6 @@
+import subprocess
+import sys
+
+if __name__ == '__main__':
+    assert len(sys.argv) > 1
+    sys.exit(subprocess.Popen(sys.argv[1:], stdout=sys.stderr).wait())
diff --git a/build/scripts/symlink.py b/build/scripts/symlink.py
new file mode 100755
index 0000000000..9e30a25065
--- /dev/null
+++ b/build/scripts/symlink.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+import sys
+import os
+import platform
+from subprocess import call
+
+
+def symlink():
+    if len(sys.argv) < 3:
+        print >>sys.stderr, "Usage: symlink.py <source> <target>"
+        sys.exit(1)
+
+    source = sys.argv[1]
+    target = sys.argv[2]
+
+    print("Making a symbolic link from {0} to {1}".format(source, target))
+
+    sysName = platform.system()
+    if sysName == "Windows":  # and not os.path.exists(target)
+        if os.path.isdir(source):
+            call(["mklink", "/D", target, source], shell=True)
+        else:
+            call(["mklink", target, source], shell=True)
+    else:
+        call(["ln", "-f", "-s", "-n", source, target])
+
+if __name__ == '__main__':
+    symlink()
diff --git a/build/scripts/tar_directory.py b/build/scripts/tar_directory.py
new file mode 100644
index 0000000000..a91889fa22
--- /dev/null
+++ b/build/scripts/tar_directory.py
@@ -0,0 +1,45 @@
+import os
+import sys
+import tarfile
+
+
+def is_exe(fpath):
+    return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+
+def main(args):
+    if len(args) < 2 or len(args) > 3:
+        raise Exception("Illegal usage: `tar_directory.py archive.tar directory [skip prefix]` or `tar_directory.py archive.tar output_directory --extract`")
+    tar, directory, prefix, extract = args[0], args[1], None, False
+    if len(args) == 3:
+        if args[2] == '--extract':
+            extract = True
+        else:
+            prefix = args[2]
+    for tar_exe in ('/usr/bin/tar', '/bin/tar'):
+        if not is_exe(tar_exe):
+            continue
+        if extract:
+            dest = os.path.abspath(directory)
+            if not os.path.exists(dest):
+                os.makedirs(dest)
+            os.execv(tar_exe, [tar_exe, '-xf', tar, '-C', dest])
+        else:
+            source = os.path.relpath(directory, prefix) if prefix else directory
+            os.execv(tar_exe, [tar_exe, '-cf', tar] + (['-C', prefix] if prefix else []) + [source])
+        break
+    else:
+        if extract:
+            dest = os.path.abspath(directory)
+            if not os.path.exists(dest):
+                os.makedirs(dest)
+            with tarfile.open(tar, 'r') as tar_file:
+                tar_file.extractall(dest)
+        else:
+            source = directory
+            with tarfile.open(tar, 'w') as out:
+                out.add(os.path.abspath(source), arcname=os.path.relpath(source, prefix) if prefix else source)
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/build/scripts/tar_sources.py b/build/scripts/tar_sources.py
new file mode 100644
index 0000000000..d7e650e4ac
--- /dev/null
+++ b/build/scripts/tar_sources.py
@@ -0,0 +1,41 @@
+import argparse
+import os
+import tarfile
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--exts', nargs='*', default=None)
+    parser.add_argument('--flat', action='store_true')
+    parser.add_argument('--input', required=True)
+    parser.add_argument('--output', required=True)
+    parser.add_argument('--prefix', default=None)
+
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+
+    srcs = []
+    for root, _, files in os.walk(args.input):
+        for f in files:
+            if not args.exts or f.endswith(tuple(args.exts)):
+                srcs.append(os.path.join(root, f))
+
+    compression_mode = ''
+    if args.output.endswith(('.tar.gz', '.tgz')):
+        compression_mode = 'gz'
+    elif args.output.endswith('.bzip2'):
+        compression_mode = 'bz2'
+
+    with tarfile.open(args.output, 'w:{}'.format(compression_mode)) as out:
+        for f in srcs:
+            arcname = os.path.basename(f) if args.flat else os.path.relpath(f, args.input)
+            if args.prefix:
+                arcname = os.path.join(args.prefix, arcname)
+            out.add(f, arcname=arcname)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/tared_protoc.py b/build/scripts/tared_protoc.py
new file mode 100644
index 0000000000..7643e1dbfe
--- /dev/null
+++ b/build/scripts/tared_protoc.py
@@ -0,0 +1,31 @@
+import os
+import optparse
+import tarfile
+import contextlib
+import subprocess as sp
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.disable_interspersed_args()
+    parser.add_option('--tar-output')
+    parser.add_option('--protoc-out-dir')
+    return parser.parse_args()
+
+
+def main():
+    opts, args = parse_args()
+    assert opts.tar_output
+    assert opts.protoc_out_dir
+
+    if not os.path.exists(opts.protoc_out_dir):
+        os.makedirs(opts.protoc_out_dir)
+
+    sp.check_call(args)
+
+    with contextlib.closing(tarfile.open(opts.tar_output, 'w')) as tf:
+        tf.add(opts.protoc_out_dir, arcname='')
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/touch.py b/build/scripts/touch.py
new file mode 100755
index 0000000000..e01ba7f86b
--- /dev/null
+++ b/build/scripts/touch.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+import optparse
+import os
+import sys
+import time
+
+
+def main(argv):
+    parser = optparse.OptionParser(add_help_option=False)
+    parser.disable_interspersed_args()
+
+    parser.add_option('-?', '--help', dest='help',
+                      action='store_true', default=None, help='print help')
+    parser.add_option('-t', dest='t', action='store', default=None)
+
+    opts, argv_rest = parser.parse_args(argv)
+    if getattr(opts, 'help', False):
+        parser.print_help()
+        return 0
+
+    tspec = opts.t
+    if tspec is None:
+        times = None
+    else:
+        head, sep, tail = tspec.partition('.')
+        if 8 > len(head):
+            raise Exception("time spec must follow format [[CC]YY]MMDDhhmm[.SS]: " + tspec + '; ' + head)
+        tfmt = ''
+        if 12 == len(head):
+            tfmt += '%Y'
+        elif 10 == len(head):
+            tfmt += '%y'
+        tfmt += '%m%d%H%M'
+        if 2 == len(tail):
+            tfmt += '.%S'
+        mtime = time.mktime(time.strptime(tspec, tfmt))
+        times = (mtime, mtime)
+
+    for file in argv_rest:
+        try:
+            os.utime(file, times)
+        except:
+            open(file, 'w').close()
+            if times is not None:
+                os.utime(file, times)
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv[1:]))
diff --git a/build/scripts/unpacking_jtest_runner.py b/build/scripts/unpacking_jtest_runner.py
new file mode 100644
index 0000000000..9730dcd711
--- /dev/null
+++ b/build/scripts/unpacking_jtest_runner.py
@@ -0,0 +1,148 @@
+import io
+import json
+import optparse
+import os
+import sys
+import subprocess
+import time
+import zipfile
+import platform
+
+# This script changes test run classpath by unpacking tests.jar -> tests-dir. The goal
+# is to launch tests with the same classpath as maven does.
+
+
+def parse_args():
+    parser = optparse.OptionParser()
+    parser.disable_interspersed_args()
+    parser.add_option('--trace-file')
+    parser.add_option('--jar-binary')
+    parser.add_option('--tests-jar-path')
+    parser.add_option('--classpath-option-type', choices=('manifest', 'command_file', 'list'), default='manifest')
+    return parser.parse_args()
+
+
+# temporary, for jdk8/jdk9+ compatibility
+def fix_cmd(cmd):
+    if not cmd:
+        return cmd
+    java = cmd[0]
+    if not java.endswith('java') and not java.endswith('java.exe'):
+        return cmd
+    p = subprocess.Popen([java, '-version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    out, err = out.strip(), err.strip()
+    if ((out or '').strip().startswith('java version "1.8') or (err or '').strip().startswith('java version "1.8')):
+        res = []
+        i = 0
+        while i < len(cmd):
+            for option in ('--add-exports', '--add-modules'):
+                if cmd[i] == option:
+                    i += 1
+                    break
+                elif cmd[i].startswith(option + '='):
+                    break
+            else:
+                res.append(cmd[i])
+            i += 1
+        return res
+    return cmd
+
+
+def dump_event(etype, data, filename):
+    event = {
+        'timestamp': time.time(),
+        'value': data,
+        'name': etype,
+    }
+
+    with io.open(filename, 'a', encoding='utf8') as afile:
+        afile.write(unicode(json.dumps(event) + '\n'))
+
+
+def dump_chunk_event(data, filename):
+    return dump_event('chunk-event', data, filename)
+
+
+def extract_jars(dest, archive):
+    os.makedirs(dest)
+    with zipfile.ZipFile(archive) as zf:
+        zf.extractall(dest)
+
+
+def make_bfg_from_cp(class_path, out):
+    class_path = ' '.join(
+        map(lambda path: ('file:/' + path.lstrip('/')) if os.path.isabs(path) else path, class_path)
+    )
+    with zipfile.ZipFile(out, 'w') as zf:
+        lines = []
+        while class_path:
+            lines.append(class_path[:60])
+            class_path = class_path[60:]
+        if lines:
+            zf.writestr('META-INF/MANIFEST.MF', 'Manifest-Version: 1.0\nClass-Path: \n ' + '\n '.join(lines) + ' \n\n')
+
+
+def make_command_file_from_cp(class_path, out):
+    with open(out, 'w') as cp_file:
+        cp_file.write(os.pathsep.join(class_path))
+
+
+def main():
+    s = time.time()
+    opts, args = parse_args()
+
+    # unpack tests jar
+    try:
+        build_root = args[args.index('--build-root') + 1]
+        dest = os.path.join(build_root, 'test-classes')
+    except Exception:
+        build_root = ''
+        dest = os.path.abspath('test-classes')
+
+    extract_jars(dest, opts.tests_jar_path)
+
+    metrics = {
+        'suite_jtest_extract_jars_(seconds)': time.time() - s,
+    }
+
+    s = time.time()
+    # fix java classpath
+    cp_idx = args.index('-classpath')
+    if args[cp_idx + 1].startswith('@'):
+        real_name = args[cp_idx + 1][1:]
+        mf = os.path.join(os.path.dirname(real_name), 'fixed.bfg.jar')
+        with open(real_name) as origin:
+            class_path = [os.path.join(build_root, i.strip()) for i in origin]
+        if opts.tests_jar_path in class_path:
+            class_path.remove(opts.tests_jar_path)
+        if opts.classpath_option_type == 'manifest':
+            make_bfg_from_cp(class_path, mf)
+            mf = os.pathsep.join([dest, mf])
+        elif opts.classpath_option_type == 'command_file':
+            mf = os.path.splitext(mf)[0] + '.txt'
+            make_command_file_from_cp([dest] + class_path, mf)
+            mf = "@" + mf
+        elif opts.classpath_option_type == 'list':
+            mf = os.pathsep.join([dest] + class_path)
+        else:
+            raise Exception("Unexpected classpath option type: " + opts.classpath_option_type)
+        args = fix_cmd(args[:cp_idx + 1]) + [mf] + args[cp_idx + 2:]
+    else:
+        args[cp_idx + 1] = args[cp_idx + 1].replace(opts.tests_jar_path, dest)
+        args = fix_cmd(args[:cp_idx]) + args[cp_idx:]
+
+    metrics['suite_jtest_fix_classpath_(seconds)'] = time.time() - s
+
+    if opts.trace_file:
+        dump_chunk_event({'metrics': metrics}, opts.trace_file)
+
+    # run java cmd
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(args).wait())
+    else:
+        os.execv(args[0], args)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/build/scripts/with_coverage.py b/build/scripts/with_coverage.py
new file mode 100644
index 0000000000..d62435c3b8
--- /dev/null
+++ b/build/scripts/with_coverage.py
@@ -0,0 +1,40 @@
+# TODO prettyboy remove after ya-bin release
+
+import os
+import sys
+import subprocess
+import tarfile
+import random
+import shutil
+
+
+def mkdir_p(path):
+    try:
+        os.makedirs(path)
+    except OSError:
+        pass
+
+
+def main(args):
+    coverage_path = os.path.abspath(args[0])
+    coverage_dir = coverage_path + '.' + str(random.getrandbits(64))
+
+    mkdir_p(coverage_dir)
+
+    env = os.environ.copy()
+    env['GCOV_PREFIX'] = coverage_dir
+
+    subprocess.check_call(args[1:], env=env)
+
+    arch_path = coverage_dir + '.archive'
+
+    with tarfile.open(arch_path, 'w:') as tar:
+        tar.add(coverage_dir, arcname='.')
+
+    os.rename(arch_path, coverage_path)
+
+    shutil.rmtree(coverage_dir)
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/build/scripts/with_crash_on_timeout.py b/build/scripts/with_crash_on_timeout.py
new file mode 100644
index 0000000000..bde864ed29
--- /dev/null
+++ b/build/scripts/with_crash_on_timeout.py
@@ -0,0 +1,22 @@
+# TODO prettyboy remove after ya-bin release
+
+import os
+import sys
+import subprocess
+import json
+
+
+def main(args):
+    meta_path = os.path.abspath(args[0])
+    timeout_code = int(args[1])
+    subprocess.check_call(args[2:])
+    with open(meta_path) as f:
+        meta_info = json.loads(f.read())
+        if meta_info["exit_code"] == timeout_code:
+            print >> sys.stderr, meta_info["project"], 'crashed by timeout, use --test-disable-timeout option'
+            return 1
+    return 0
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/build/scripts/with_kapt_args.py b/build/scripts/with_kapt_args.py
new file mode 100644
index 0000000000..eb7438a4c9
--- /dev/null
+++ b/build/scripts/with_kapt_args.py
@@ -0,0 +1,35 @@
+import sys
+import os
+import subprocess
+import platform
+import argparse
+import re
+
+
+def parse_args(args):
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--ap-classpath', nargs='*', type=str, dest='classpath')
+    cmd_start = args.index('--')
+    return parser.parse_args(args[:cmd_start]), args[cmd_start+1:]
+
+
+def get_ap_classpath(directory):
+    jar_re = re.compile(r'.*(?<!-sources)\.jar')
+    found_jars = [os.path.join(address, name) for address, dirs, files in os.walk(directory) for name in files if jar_re.match(name)]
+    if len(found_jars) != 1:
+        raise Exception("found %d JAR files in directory %s" % (len(found_jars), directory))
+    arg = 'plugin:org.jetbrains.kotlin.kapt3:apclasspath=' + found_jars[0]
+    return '-P', arg
+
+
+def create_extra_args(args):
+    cp_opts = [arg for d in args.classpath for arg in get_ap_classpath(d)]
+    return cp_opts
+
+if __name__ == '__main__':
+    args, cmd = parse_args(sys.argv[1:])
+    res = cmd + create_extra_args(args)
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(res).wait())
+    else:
+        os.execv(res[0], res)
diff --git a/build/scripts/with_pathsep_resolve.py b/build/scripts/with_pathsep_resolve.py
new file mode 100644
index 0000000000..37c8c598ae
--- /dev/null
+++ b/build/scripts/with_pathsep_resolve.py
@@ -0,0 +1,23 @@
+import sys
+import os
+import subprocess
+import platform
+
+
+def fix_args(args):
+    just_replace_it = False
+    for arg in args:
+        if arg == '--fix-path-sep':
+            just_replace_it = True
+            continue
+        if just_replace_it:
+            arg = arg.replace('::', os.pathsep)
+            just_replace_it = False
+        yield arg
+
+if __name__ == '__main__':
+    res = list(fix_args(sys.argv[1:]))
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(res).wait())
+    else:
+        os.execv(res[0], res)
diff --git a/build/scripts/wrap_groovyc.py b/build/scripts/wrap_groovyc.py
new file mode 100644
index 0000000000..068b73fd87
--- /dev/null
+++ b/build/scripts/wrap_groovyc.py
@@ -0,0 +1,23 @@
+import platform
+import sys
+import os
+import subprocess
+
+
+def fix_windows(args):
+    for arg in args:
+        if os.path.basename(arg) == 'groovyc' and os.path.basename(os.path.dirname(arg)) == 'bin':
+            yield arg + '.bat'
+        else:
+            yield arg
+
+
+if __name__ == '__main__':
+    env = os.environ.copy()
+    jdk = sys.argv[1]
+    env['JAVA_HOME'] = jdk
+    args = sys.argv[2:]
+    if platform.system() == 'Windows':
+        sys.exit(subprocess.Popen(list(fix_windows(args)), env=env).wait())
+    else:
+        os.execve(args[0], args, env)
diff --git a/build/scripts/wrapcc.py b/build/scripts/wrapcc.py
new file mode 100644
index 0000000000..88a9e6a4fc
--- /dev/null
+++ b/build/scripts/wrapcc.py
@@ -0,0 +1,45 @@
+from __future__ import print_function
+
+import os
+import sys
+import time
+import subprocess
+
+
+def need_retry(text):
+    return 'Stack dump' in text
+
+
+def retry_inf(cmd):
+    while True:
+        try:
+            yield subprocess.check_output(cmd, stderr=subprocess.STDOUT), None
+        except subprocess.CalledProcessError as e:
+            yield e.output, e
+
+
+def retry(cmd):
+    for n, (out, err) in enumerate(retry_inf(cmd)):
+        if out:
+            sys.stderr.write(out)
+
+        if n > 5:
+            raise Exception('all retries failed')
+        elif need_retry(out):
+            time.sleep(1 + n)
+        elif err:
+            raise err
+        else:
+            return
+
+
+if __name__ == '__main__':
+    cmd = sys.argv[1:]
+
+    if '-c' in cmd:
+        try:
+            retry(cmd)
+        except subprocess.CalledProcessError as e:
+            sys.exit(e.returncode)
+    else:
+        os.execv(cmd[0], cmd)
diff --git a/build/scripts/wrapper.py b/build/scripts/wrapper.py
new file mode 100644
index 0000000000..1e9d7955a5
--- /dev/null
+++ b/build/scripts/wrapper.py
@@ -0,0 +1,11 @@
+import os
+import sys
+
+
+if __name__ == '__main__':
+    path = sys.argv[1]
+
+    if path[0] != '/':
+        path = os.path.join(os.path.dirname(__file__), path)
+
+    os.execv(path, [path] + sys.argv[2:])
diff --git a/build/scripts/write_file_size.py b/build/scripts/write_file_size.py
new file mode 100644
index 0000000000..880fb90644
--- /dev/null
+++ b/build/scripts/write_file_size.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+import sys
+import os.path
+
+if __name__ == '__main__':
+    output = sys.argv[1]
+    size_sum = 0
+    for filename in sys.argv[2:]:
+        if os.path.exists(filename):
+            size_sum += os.path.getsize(filename)
+        else:
+            sys.stderr.write('write_file_size.py: {0}: No such file or directory\n'.format(filename))
+            sys.exit(1)
+    with open(output, 'w') as f:
+        f.write(str(size_sum))
diff --git a/build/scripts/writer.py b/build/scripts/writer.py
new file mode 100644
index 0000000000..21bb3006e5
--- /dev/null
+++ b/build/scripts/writer.py
@@ -0,0 +1,40 @@
+import sys
+import argparse
+
+import process_command_files as pcf
+
+
+def parse_args():
+    args = pcf.get_args(sys.argv[1:])
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-f', '--file', dest='file_path')
+    parser.add_argument('-a', '--append', action='store_true', default=False)
+    parser.add_argument('-Q', '--quote', action='store_true', default=False)
+    parser.add_argument('-s', '--addspace', action='store_true', default=False)
+    parser.add_argument('-c', '--content', action='append', dest='content')
+    parser.add_argument('-m', '--content-multiple', nargs='*', dest='content')
+    parser.add_argument('-P', '--path-list', action='store_true', default=False)
+    return parser.parse_args(args)
+
+
+def smart_shell_quote(v):
+    if v is None:
+        return None
+    if ' ' in v or '"' in v or "'" in v:
+        return "\"{0}\"".format(v.replace('"', '\\"'))
+    return v
+
+if __name__ == '__main__':
+    args = parse_args()
+    open_type = 'a' if args.append else 'w'
+
+    content = args.content
+    if args.quote:
+        content = [smart_shell_quote(ln) for ln in content] if content is not None else None
+    content = '\n'.join(content)
+
+    with open(args.file_path, open_type) as f:
+        if args.addspace:
+            f.write(' ')
+        if content is not None:
+            f.write(content)
diff --git a/build/scripts/xargs.py b/build/scripts/xargs.py
new file mode 100644
index 0000000000..5d68929ecc
--- /dev/null
+++ b/build/scripts/xargs.py
@@ -0,0 +1,18 @@
+import sys
+import os
+import subprocess
+
+if __name__ == '__main__':
+    pos = sys.argv.index('--')
+    fname = sys.argv[pos + 1]
+    cmd = sys.argv[pos + 2:]
+
+    with open(fname, 'r') as f:
+        args = [x.strip() for x in f]
+
+    os.remove(fname)
+
+    p = subprocess.Popen(cmd + args, shell=False, stderr=sys.stderr, stdout=sys.stdout)
+    p.communicate()
+
+    sys.exit(p.returncode)
diff --git a/build/scripts/ya.make b/build/scripts/ya.make
new file mode 100644
index 0000000000..837f0e0494
--- /dev/null
+++ b/build/scripts/ya.make
@@ -0,0 +1,110 @@
+OWNER(g:ymake)
+
+PY23_TEST()
+
+IF (PY2)
+    TEST_SRCS(
+        build_dll_and_java.py
+        build_java_codenav_index.py
+        build_java_with_error_prone.py
+        build_java_with_error_prone2.py
+        build_mn.py
+        build_pln_header.py
+        cat.py
+        cgo1_wrapper.py
+        check_config_h.py
+        collect_java_srcs.py
+        compile_cuda.py
+        compile_java.py
+        compile_jsrc.py
+        compile_pysrc.py
+        configure_file.py
+        copy_docs_files.py
+        copy_docs_files_to_dir.py
+        copy_files_to_dir.py
+        copy_to_dir.py
+        coverage-info.py
+        cpp_flatc_wrapper.py
+        create_jcoverage_report.py
+        extract_asrc.py
+        extract_docs.py
+        extract_jacoco_report.py
+        f2c.py
+        fail_module_cmd.py
+        fetch_from.py
+        fetch_from_external.py
+        fetch_from_mds.py
+        fetch_from_npm.py
+        fetch_from_sandbox.py
+        fetch_resource.py
+        filter_zip.py
+        find_and_tar.py
+        fix_msvc_output.py
+        fs_tools.py
+        gen_aar_gradle_script.py
+        gen_java_codenav_entry.py
+        gen_java_codenav_protobuf.py
+        gen_mx_table.py
+        gen_py3_reg.py
+        gen_py_reg.py
+        gen_test_apk_gradle_script.py
+        gen_ub.py
+        generate_pom.py
+        go_proto_wrapper.py
+        go_tool.py
+        ios_wrapper.py
+        java_pack_to_file.py
+        link_asrc.py
+        link_dyn_lib.py
+        link_exe.py
+        link_fat_obj.py
+        link_lib.py
+        llvm_opt_wrapper.py
+        merge_coverage_data.py
+        merge_files.py
+        mkdir.py
+        mkdocs_builder_wrapper.py
+        mkver.py
+        pack_ios.py
+        pack_jcoverage_resources.py
+        perl_wrapper.py
+        postprocess_go_fbs.py
+        preprocess.py
+        py_compile.py
+        run_ios_simulator.py
+        run_javac.py
+        run_junit.py
+        run_llvm_dsymutil.py
+        run_msvc_wine.py
+        run_tool.py
+        sky.py
+        stdout2stderr.py
+        symlink.py
+        tar_directory.py
+        tar_sources.py
+        tared_protoc.py
+        touch.py
+        unpacking_jtest_runner.py
+        vcs_info.py
+        with_coverage.py
+        with_crash_on_timeout.py
+        with_pathsep_resolve.py
+        wrap_groovyc.py
+        wrapper.py
+        writer.py
+        write_file_size.py
+        xargs.py
+        yield_line.py
+        yndexer.py
+    )
+ELSEIF(PY3)
+    TEST_SRCS(
+        build_info_gen.py
+    )
+ENDIF()
+
+PEERDIR(
+    ydb/library/yql/public/udf
+)
+
+END()
diff --git a/build/scripts/yield_line.py b/build/scripts/yield_line.py
new file mode 100644
index 0000000000..c7087e521e
--- /dev/null
+++ b/build/scripts/yield_line.py
@@ -0,0 +1,8 @@
+import sys
+
+
+if __name__ == '__main__':
+    pos = sys.argv.index('--')
+
+    with open(sys.argv[pos + 1], 'a') as f:
+        f.write(' '.join(sys.argv[pos + 2:]) + '\n')
diff --git a/build/scripts/yndexer.py b/build/scripts/yndexer.py
new file mode 100644
index 0000000000..a38e28ba99
--- /dev/null
+++ b/build/scripts/yndexer.py
@@ -0,0 +1,79 @@
+import sys
+import subprocess
+import threading
+import os
+import re
+
+
+rx_resource_dir = re.compile(r'libraries: =([^:]*)')
+
+
+def _try_to_kill(process):
+    try:
+        process.kill()
+    except Exception:
+        pass
+
+
+def touch(path):
+    if not os.path.exists(path):
+        with open(path, 'w'):
+            pass
+
+
+class Process(object):
+    def __init__(self, args):
+        self._process = subprocess.Popen(args)
+        self._event = threading.Event()
+        self._result = None
+        thread = threading.Thread(target=self._run)
+        thread.setDaemon(True)
+        thread.start()
+
+    def _run(self):
+        self._process.communicate()
+        self._result = self._process.returncode
+        self._event.set()
+
+    def wait(self, timeout):
+        self._event.wait(timeout=timeout)
+        _try_to_kill(self._process)
+        return self._result
+
+
+if __name__ == '__main__':
+    args = sys.argv
+
+    yndexer = args[1]
+    timeout = int(args[2])
+    arc_root = args[3]
+    build_root = args[4]
+    input_file = args[5]
+    output_file = args[-1]
+    tail_args = args[6:-1]
+
+    subprocess.check_call(tail_args)
+
+    clang = tail_args[0]
+    out = subprocess.check_output([clang, '-print-search-dirs'])
+    resource_dir = rx_resource_dir.search(out).group(1)
+
+    yndexer_args = [
+        yndexer, input_file,
+        '-pb2',
+        '-i', 'arc::{}'.format(arc_root),
+        '-i', 'build::{}'.format(build_root),
+        '-i', '.IGNORE::/',
+        '-o', os.path.dirname(output_file),
+        '-n', os.path.basename(output_file).rsplit('.ydx.pb2', 1)[0],
+        '--'
+    ] + tail_args + [
+        '-resource-dir', resource_dir,
+    ]
+
+    process = Process(yndexer_args)
+    result = process.wait(timeout=timeout)
+
+    if result != 0:
+        print >> sys.stderr, 'Yndexing process finished with code', result
+        touch(output_file)