intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 63 insertions, 0 deletions

diff --git a/build/scripts/build_info_gen.py b/build/scripts/build_info_gen.py
new file mode 100644
index 0000000000..949e0a1636
--- /dev/null
+++ b/build/scripts/build_info_gen.py
@@ -0,0 +1,63 @@
+import subprocess
+import os
+import sys
+import re
+
+indent = "    "
+
+
+def escape_special_symbols(strval):
+    retval = ""
+    for c in strval:
+        if c in ("\\", "\""):
+            retval += "\\" + c
+        elif ord(c) < 0x20:
+            retval += c.encode("string_escape")
+        else:
+            retval += c
+    return retval
+
+
+def escape_line_feed(strval):
+    return re.sub(r'\\n', r'\\n"\\\n' + indent + '"', strval)
+
+
+def escaped_define(strkey, strval):
+    return "#define " + strkey + " \"" + escape_line_feed(escape_special_symbols(strval)) + "\""
+
+
+def get_build_info(compiler, flags):
+    build_info = "Build info:\n"
+    build_info += indent + "Compiler: " + compiler + "\n"
+    build_info += indent + "Compiler version: \n" + get_compiler_info(compiler) + "\n"
+    build_info += indent + "Compile flags: " + (flags if flags else "no flags info")
+    return build_info
+
+
+def get_compiler_info(compiler):
+    compiler_binary = os.path.basename(compiler).lower()
+    if len(compiler.split(' ')) > 1 or compiler_binary == "ymake" or compiler_binary == "ymake.exe":
+        compiler_ver_out = "Build by wrapper. No useful info here."
+    else:
+        compiler_ver_cmd = [compiler]
+        if compiler_binary not in ("cl", "cl.exe"):
+            compiler_ver_cmd.append('--version')
+        compiler_ver_out = subprocess.Popen(compiler_ver_cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT).stdout.read()
+    return "\n".join(['{}{}'.format(indent * 2, line.strip()) for line in compiler_ver_out.splitlines() if line.strip()])
+
+
+def main():
+    if len(sys.argv) != 4:
+        print >>sys.stderr, "Usage: build_info_gen.py <output file> <CXX compiler> <CXX flags>"
+        sys.exit(1)
+    cxx_compiler = sys.argv[2]
+    cxx_flags = sys.argv[3]
+    with open(sys.argv[1], 'w') as result:
+        print >> result, "#pragma once\n"
+        print >> result, escaped_define("BUILD_INFO", get_build_info(cxx_compiler, cxx_flags))
+        print >> result, escaped_define("BUILD_COMPILER", cxx_compiler)
+        print >> result, escaped_define("BUILD_COMPILER_VERSION", get_compiler_info(cxx_compiler))
+        print >> result, escaped_define("BUILD_COMPILER_FLAGS", cxx_flags)
+
+if __name__ == "__main__":
+    main()