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from __future__ import print_function
import sys
import subprocess
import tempfile
import os
import shutil
import argparse
class Opts(object):
def __init__(self, args):
kvs = args.index('--')
kve = args.index('--', kvs + 1)
kv = args[kvs + 1:kve]
args = args[:kvs] + args[kve + 1:]
parser = argparse.ArgumentParser()
parser.add_argument('--plugin')
kvargs = parser.parse_args(kv)
self.ar_plugin = kvargs.plugin
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.enable_openssl3 = args[5]
self.output = args[6]
auto_input = args[7:]
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)
def run(*args):
return subprocess.check_output(list(args), shell=False).strip()
def gen_renames_1(d):
for l in d.split('\n'):
l = l.strip()
if ' ' in l:
yield l.split(' ')[-1]
def have_prefix(l, p):
for x in l:
if not x.startswith(p):
return False
return True
def gen_renames_2(p, d):
l = list(gen_renames_1(d))
a = have_prefix(l, '_')
for s in l:
if 'asan_globals' in s:
continue
if s in ['HMAC', 'SHA1', 'SHA256', 'SHA256', 'SHA512', 'RC4', 'MD5', 'SHA384']:
continue
if a and s[1:] in ['HMAC', 'SHA1', 'SHA256', 'SHA256', 'SHA512', 'RC4', 'MD5', 'SHA384']:
continue
if a:
yield s + ' _' + p + s[1:]
else:
yield s + ' ' + p + s
def gen_renames(p, d):
return '\n'.join(gen_renames_2(p, d)).strip() + '\n'
def rename_syms(where, ret):
p = 'v1_'
# find symbols to rename
syms = run(where + 'llvm-nm', '--extern-only', '--defined-only', '-A', ret)
# prepare rename plan
renames = gen_renames(p, syms)
tmp = ret + '.syms'
with open(tmp, 'w') as f:
f.write(renames)
# rename symbols
run(where + 'llvm-objcopy', '--redefine-syms=' + tmp, ret)
os.unlink(tmp)
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))
if opts.enable_openssl3 != 'no-openssl3' and os.path.basename(opts.output) in ['libcontrib-libs-openssl.a', 'liblibs-openssl-crypto.a']:
rename_syms(os.path.dirname(opts.archiver) + '/', opts.output)
if opts.ar_plugin:
subprocess.check_call([sys.executable, opts.ar_plugin, opts.output, '--'] + sys.argv[1:])
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