Make iOS API Framework script use the src/ dir as cwd for commands.

tools-webrtc/ios/build_ios_libs.py

 #!/usr/bin/env python
 
 # Copyright (c) 2017 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.
 
 """WebRTC iOS FAT libraries build script.
 Each architecture is compiled separately before being merged together.
 By default, the library is created in out_ios_libs/. (Change with -o.)
 The headers will be copied to out_ios_libs/include.
 """
 
 import argparse
 import distutils.dir_util
 import logging
 import os
 import shutil
 import subprocess
 import sys
 
 
 os.environ['PATH'] = '/usr/libexec' + os.pathsep + os.environ['PATH']
 
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
-WEBRTC_BASE_DIR = os.path.abspath(os.path.join(SCRIPT_DIR, '..', '..'))
-SDK_OUTPUT_DIR = os.path.join(WEBRTC_BASE_DIR, 'out_ios_libs')
+WEBRTC_SRC_DIR = os.path.abspath(os.path.join(SCRIPT_DIR, '..', '..'))
+SDK_OUTPUT_DIR = os.path.join(WEBRTC_SRC_DIR, 'out_ios_libs')
 SDK_LIB_NAME = 'librtc_sdk_objc.a'
 SDK_FRAMEWORK_NAME = 'WebRTC.framework'
 
 DEFAULT_ARCHS = ENABLED_ARCHS = ['arm64', 'arm', 'x64', 'x86']
 IOS_DEPLOYMENT_TARGET = '8.0'
 LIBVPX_BUILD_VP9 = False
 
 
 def _ParseArgs():
   parser = argparse.ArgumentParser(description=__doc__)
@@ skipping 22 matching lines @@
   parser.add_argument('--use-goma', action='store_true', default=False,
       help='Use goma to build.')
   parser.add_argument('--extra-gn-args', default=[], nargs='*',
       help='Additional GN args to be used during Ninja generation.')
 
   return parser.parse_args()
 
 
 def _RunCommand(cmd):
   logging.debug('Running: %r', cmd)
-  subprocess.check_call(cmd)
+  subprocess.check_call(cmd, cwd=WEBRTC_SRC_DIR)
 
 
 def _CleanArtifacts(output_dir):
   if os.path.isdir(output_dir):
     logging.info('Deleting %s', output_dir)
     shutil.rmtree(output_dir)
 
 
 def BuildWebRTC(output_dir, target_arch, flavor, build_type,
                 ios_deployment_target, libvpx_build_vp9, use_bitcode,
@@ skipping 128 matching lines @@
            'Set :CFBundleVersion ' + version_number, infoplist_path]
     _RunCommand(cmd)
     _RunCommand(['plutil', '-convert', 'binary1', infoplist_path])
 
   logging.info('Done.')
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())