The Meson Build System
http://mesonbuild.com/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
4.0 KiB
102 lines
4.0 KiB
#!/usr/bin/env python3 |
|
|
|
# Copyright 2013 Jussi Pakkanen |
|
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); |
|
# you may not use this file except in compliance with the License. |
|
# You may obtain a copy of the License at |
|
|
|
# http://www.apache.org/licenses/LICENSE-2.0 |
|
|
|
# Unless required by applicable law or agreed to in writing, software |
|
# distributed under the License is distributed on an "AS IS" BASIS, |
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
# See the License for the specific language governing permissions and |
|
# limitations under the License. |
|
|
|
# This script extracts the symbols of a given shared library |
|
# into a file. If the symbols have not changed, the file is not |
|
# touched. This information is used to skip link steps if the |
|
# ABI has not changed. |
|
|
|
# This file is basically a reimplementation of |
|
# http://cgit.freedesktop.org/libreoffice/core/commit/?id=3213cd54b76bc80a6f0516aac75a48ff3b2ad67c |
|
|
|
import sys, subprocess, platform |
|
from optparse import OptionParser |
|
|
|
usage_info = '%prog [options] <shared library> <symbol file>' |
|
|
|
parser = OptionParser(usage=usage_info) |
|
|
|
parser.add_option('--cross-host', default=None, dest='cross_host', |
|
help='cross compilation host platform') |
|
|
|
def dummy_syms(outfilename): |
|
"""Just touch it so relinking happens always.""" |
|
open(outfilename, 'w').close() |
|
|
|
def write_if_changed(text, outfilename): |
|
try: |
|
oldtext = open(outfilename, 'r').read() |
|
if text == oldtext: |
|
return |
|
except FileNotFoundError: |
|
pass |
|
open(outfilename, 'w').write(text) |
|
|
|
def linux_syms(libfilename, outfilename): |
|
pe = subprocess.Popen(['readelf', '-d', libfilename], stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
|
output = pe.communicate()[0].decode() |
|
if pe.returncode != 0: |
|
raise RuntimeError('Readelf does not work') |
|
result = [x for x in output.split('\n') if 'SONAME' in x] |
|
assert(len(result) <= 1) |
|
pnm = subprocess.Popen(['nm', '--dynamic', '--extern-only', '--defined-only', '--format=posix', libfilename], |
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
|
output = pnm.communicate()[0].decode() |
|
if pnm.returncode != 0: |
|
raise RuntimeError('nm does not work.') |
|
result += [' '.join(x.split()[0:2]) for x in output.split('\n') if len(x) > 0] |
|
write_if_changed('\n'.join(result) + '\n', outfilename) |
|
|
|
def osx_syms(libfilename, outfilename): |
|
pe = subprocess.Popen(['otool', '-l', libfilename], stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
|
output = pe.communicate()[0].decode() |
|
if pe.returncode != 0: |
|
raise RuntimeError('Otool does not work.') |
|
arr = output.split('\n') |
|
for (i, val) in enumerate(arr): |
|
if 'LC_ID_DYLIB' in val: |
|
match = i |
|
break |
|
result = [arr[match+2], arr[match+5]] # Libreoffice stores all 5 lines but the others seem irrelevant. |
|
pnm = subprocess.Popen(['nm', '-g', '-P', libfilename], stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
|
output = pnm.communicate()[0].decode() |
|
if pnm.returncode != 0: |
|
raise RuntimeError('nm does not work.') |
|
result += [' '.join(x.split()[0:2]) for x in output.split('\n') if len(x) > 0 and not x.endswith('U')] |
|
write_if_changed('\n'.join(result) + '\n', outfilename) |
|
|
|
def gen_symbols(libfilename, outfilename, cross_host): |
|
if cross_host is not None: |
|
# In case of cross builds just always relink. |
|
# In theory we could determine the correct |
|
# toolset but there are more important things |
|
# to do. |
|
dummy_syms(outfilename) |
|
elif platform.system() == 'Linux': |
|
linux_syms(libfilename, outfilename) |
|
elif platform.system() == 'Darwin': |
|
osx_syms(libfilename, outfilename) |
|
else: |
|
dummy_syms(outfilename) |
|
|
|
if __name__ == '__main__': |
|
(options, args) = parser.parse_args(sys.argv) |
|
if len(args) != 3: |
|
print(sys.argv[0], '<shared library file> <output file>') |
|
sys.exit(1) |
|
libfile = sys.argv[1] |
|
outfile = sys.argv[2] |
|
gen_symbols(libfile, outfile, options.cross_host)
|
|
|