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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'
def fix_cmd(arch, musl, c):
if arch == 'WINDOWS':
prefix = '/DEF:'
f = fix_windows_param
else:
prefix = '-Wl,--version-script='
if arch in ('DARWIN', 'IOS'):
f = fix_darwin_param
else:
f = lambda x: fix_gnu_param(arch, x)
def do_fix(p):
if musl and p in musl_libs:
return []
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 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('--whole-archive-peers', action='append')
parser.add_option('--whole-archive-libs', action='append')
return parser.parse_args()
if __name__ == '__main__':
opts, args = parse_args()
assert opts.arch
assert opts.target
cmd = fix_cmd(opts.arch, opts.musl, args)
cmd = ProcessWholeArchiveOption(opts.arch, opts.whole_archive_peers, opts.whole_archive_libs).construct_cmd(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', False, 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: *;
};
"""
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