diff options
Diffstat (limited to 'third_party/libwebrtc/tools_webrtc/ios/merge_ios_libs.py')
-rwxr-xr-x | third_party/libwebrtc/tools_webrtc/ios/merge_ios_libs.py | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/third_party/libwebrtc/tools_webrtc/ios/merge_ios_libs.py b/third_party/libwebrtc/tools_webrtc/ios/merge_ios_libs.py new file mode 100755 index 0000000000..111825155e --- /dev/null +++ b/third_party/libwebrtc/tools_webrtc/ios/merge_ios_libs.py @@ -0,0 +1,126 @@ +#!/usr/bin/env vpython3 + +# Copyright 2016 The WebRTC project authors. All Rights Reserved. +# +# Use of this source code is governed by a BSD-style license +# that can be found in the LICENSE file in the root of the source +# tree. An additional intellectual property rights grant can be found +# in the file PATENTS. All contributing project authors may +# be found in the AUTHORS file in the root of the source tree. +"""Script for merging generated iOS libraries.""" + +import sys +import argparse +import os +import re +import subprocess +from six.moves import range + + +# Valid arch subdir names. +VALID_ARCHS = ['arm_libs', 'arm64_libs', 'ia32_libs', 'x64_libs'] + + +def MergeLibs(lib_base_dir): + """Merges generated iOS libraries for different archs. + + Uses libtool to generate FAT archive files for each generated library. + + Args: + lib_base_dir: directory whose subdirectories are named by architecture and + contain the built libraries for that architecture + + Returns: + Exit code of libtool. + """ + output_dir_name = 'fat_libs' + archs = [arch for arch in os.listdir(lib_base_dir) if arch in VALID_ARCHS] + # For each arch, find (library name, libary path) for arch. We will merge + # all libraries with the same name. + libs = {} + for lib_dir in [os.path.join(lib_base_dir, arch) for arch in VALID_ARCHS]: + if not os.path.exists(lib_dir): + continue + for dirpath, _, filenames in os.walk(lib_dir): + for filename in filenames: + if not filename.endswith('.a'): + continue + entry = libs.get(filename, []) + entry.append(os.path.join(dirpath, filename)) + libs[filename] = entry + orphaned_libs = {} + valid_libs = {} + for library, paths in list(libs.items()): + if len(paths) < len(archs): + orphaned_libs[library] = paths + else: + valid_libs[library] = paths + for library, paths in list(orphaned_libs.items()): + components = library[:-2].split('_')[:-1] + found = False + # Find directly matching parent libs by stripping suffix. + while components and not found: + parent_library = '_'.join(components) + '.a' + if parent_library in valid_libs: + valid_libs[parent_library].extend(paths) + found = True + break + components = components[:-1] + # Find next best match by finding parent libs with the same prefix. + if not found: + base_prefix = library[:-2].split('_')[0] + for valid_lib, valid_paths in list(valid_libs.items()): + if valid_lib[:len(base_prefix)] == base_prefix: + valid_paths.extend(paths) + found = True + break + assert found + + # Create output directory. + output_dir_path = os.path.join(lib_base_dir, output_dir_name) + if not os.path.exists(output_dir_path): + os.mkdir(output_dir_path) + + # Use this so libtool merged binaries are always the same. + env = os.environ.copy() + env['ZERO_AR_DATE'] = '1' + + # Ignore certain errors. + libtool_re = re.compile(r'^.*libtool:.*file: .* has no symbols$') + + # Merge libraries using libtool. + libtool_returncode = 0 + for library, paths in list(valid_libs.items()): + cmd_list = [ + 'libtool', '-static', '-v', '-o', + os.path.join(output_dir_path, library) + ] + paths + libtoolout = subprocess.Popen(cmd_list, stderr=subprocess.PIPE, env=env) + _, err = libtoolout.communicate() + for line in err.splitlines(): + if not libtool_re.match(line): + print(line, file=sys.stderr) + # Unconditionally touch the output .a file on the command line if present + # and the command succeeded. A bit hacky. + libtool_returncode = libtoolout.returncode + if not libtool_returncode: + for i in range(len(cmd_list) - 1): + if cmd_list[i] == '-o' and cmd_list[i + 1].endswith('.a'): + os.utime(cmd_list[i + 1], None) + break + return libtool_returncode + + +def main(): + parser_description = 'Merge WebRTC libraries.' + parser = argparse.ArgumentParser(description=parser_description) + parser.add_argument('lib_base_dir', + help='Directory with built libraries. ', + type=str) + args = parser.parse_args() + lib_base_dir = args.lib_base_dir + MergeLibs(lib_base_dir) + + +if __name__ == '__main__': + sys.exit(main()) |