125 lines
4.1 KiB
Python
125 lines
4.1 KiB
Python
#!/usr/bin/python
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# Copyright 2016 The WebRTC project authors. All Rights Reserved.
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#
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# Use of this source code is governed by a BSD-style license
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# that can be found in the LICENSE file in the root of the source
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# tree. An additional intellectual property rights grant can be found
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# in the file PATENTS. All contributing project authors may
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# be found in the AUTHORS file in the root of the source tree.
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"""Script for merging generated iOS libraries."""
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import sys
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import argparse
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import os
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import re
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import subprocess
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# Valid arch subdir names.
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VALID_ARCHS = ['arm_libs', 'arm64_libs', 'ia32_libs', 'x64_libs']
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def MergeLibs(lib_base_dir):
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"""Merges generated iOS libraries for different archs.
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Uses libtool to generate FAT archive files for each generated library.
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Args:
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lib_base_dir: directory whose subdirectories are named by architecture and
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contain the built libraries for that architecture
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Returns:
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Exit code of libtool.
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"""
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output_dir_name = 'fat_libs'
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archs = [arch for arch in os.listdir(lib_base_dir)
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if arch in VALID_ARCHS]
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# For each arch, find (library name, libary path) for arch. We will merge
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# all libraries with the same name.
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libs = {}
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for lib_dir in [os.path.join(lib_base_dir, arch) for arch in VALID_ARCHS]:
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if not os.path.exists(lib_dir):
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continue
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for dirpath, _, filenames in os.walk(lib_dir):
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for filename in filenames:
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if not filename.endswith('.a'):
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continue
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entry = libs.get(filename, [])
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entry.append(os.path.join(dirpath, filename))
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libs[filename] = entry
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orphaned_libs = {}
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valid_libs = {}
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for library, paths in libs.items():
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if len(paths) < len(archs):
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orphaned_libs[library] = paths
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else:
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valid_libs[library] = paths
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for library, paths in orphaned_libs.items():
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components = library[:-2].split('_')[:-1]
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found = False
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# Find directly matching parent libs by stripping suffix.
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while components and not found:
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parent_library = '_'.join(components) + '.a'
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if parent_library in valid_libs:
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valid_libs[parent_library].extend(paths)
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found = True
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break
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components = components[:-1]
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# Find next best match by finding parent libs with the same prefix.
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if not found:
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base_prefix = library[:-2].split('_')[0]
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for valid_lib, valid_paths in valid_libs.items():
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if valid_lib[:len(base_prefix)] == base_prefix:
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valid_paths.extend(paths)
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found = True
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break
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assert found
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# Create output directory.
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output_dir_path = os.path.join(lib_base_dir, output_dir_name)
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if not os.path.exists(output_dir_path):
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os.mkdir(output_dir_path)
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# Use this so libtool merged binaries are always the same.
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env = os.environ.copy()
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env['ZERO_AR_DATE'] = '1'
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# Ignore certain errors.
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libtool_re = re.compile(r'^.*libtool:.*file: .* has no symbols$')
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# Merge libraries using libtool.
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libtool_returncode = 0
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for library, paths in valid_libs.items():
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cmd_list = ['libtool', '-static', '-v', '-o',
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os.path.join(output_dir_path, library)] + paths
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libtoolout = subprocess.Popen(cmd_list, stderr=subprocess.PIPE, env=env)
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_, err = libtoolout.communicate()
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for line in err.splitlines():
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if not libtool_re.match(line):
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print >>sys.stderr, line
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# Unconditionally touch the output .a file on the command line if present
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# and the command succeeded. A bit hacky.
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libtool_returncode = libtoolout.returncode
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if not libtool_returncode:
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for i in range(len(cmd_list) - 1):
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if cmd_list[i] == '-o' and cmd_list[i+1].endswith('.a'):
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os.utime(cmd_list[i+1], None)
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break
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return libtool_returncode
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def Main():
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parser_description = 'Merge WebRTC libraries.'
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parser = argparse.ArgumentParser(description=parser_description)
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parser.add_argument('lib_base_dir',
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help='Directory with built libraries. ',
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type=str)
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args = parser.parse_args()
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lib_base_dir = args.lib_base_dir
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MergeLibs(lib_base_dir)
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if __name__ == '__main__':
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sys.exit(Main())
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