Compile rtc_api_objc on Mac.

webrtc/api/api.gyp

 # Copyright (c) 2015 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.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 104 matching lines @@
               'java/android',
               '<(webrtc_base_dir)/java/src',
               '<(webrtc_modules_dir)/audio_device/android/java/src',
               '<(webrtc_modules_dir)/video_render/android/java/src',
             ],
           },
           'includes': ['../../build/java.gypi'],
         }, # libjingle_peerconnection_java
       ]
     }],
-    ['OS=="ios"', {
+    ['OS=="ios" or (OS=="mac" and mac_deployment_target=="10.7")', {
       'targets': [
         {
           'target_name': 'rtc_api_objc',
           'type': 'static_library',
+          'includes': [
+            '../build/objc_common.gypi',
+          ],
           'dependencies': [
             '<(webrtc_root)/base/base.gyp:rtc_base_objc',
             'libjingle_peerconnection',
           ],
           'sources': [
-            'objc/RTCAVFoundationVideoSource+Private.h',
-            'objc/RTCAVFoundationVideoSource.h',
-            'objc/RTCAVFoundationVideoSource.mm',
             'objc/RTCAudioTrack+Private.h',
             'objc/RTCAudioTrack.h',
             'objc/RTCAudioTrack.mm',
             'objc/RTCConfiguration+Private.h',
             'objc/RTCConfiguration.h',
             'objc/RTCConfiguration.mm',
             'objc/RTCDataChannel+Private.h',
             'objc/RTCDataChannel.h',
             'objc/RTCDataChannel.mm',
             'objc/RTCDataChannelConfiguration+Private.h',
@@ skipping 36 matching lines @@
             'objc/RTCVideoRenderer.h',
             'objc/RTCVideoRendererAdapter+Private.h',
             'objc/RTCVideoRendererAdapter.h',
             'objc/RTCVideoRendererAdapter.mm',
             'objc/RTCVideoSource+Private.h',
             'objc/RTCVideoSource.h',
             'objc/RTCVideoSource.mm',
             'objc/RTCVideoTrack+Private.h',
             'objc/RTCVideoTrack.h',
             'objc/RTCVideoTrack.mm',
-            'objc/avfoundationvideocapturer.h',
-            'objc/avfoundationvideocapturer.mm',
           ],
           'conditions': [
             ['OS=="ios"', {
               'sources': [
+                'objc/RTCAVFoundationVideoSource+Private.h',
+                'objc/RTCAVFoundationVideoSource.h',
+                'objc/RTCAVFoundationVideoSource.mm',
                 'objc/RTCEAGLVideoView.h',
                 'objc/RTCEAGLVideoView.m',
+                'objc/avfoundationvideocapturer.h',
+                'objc/avfoundationvideocapturer.mm',
               ],
               'all_dependent_settings': {
                 'xcode_settings': {
                   'OTHER_LDFLAGS': [
                     '-framework CoreGraphics',
                     '-framework GLKit',
                     '-framework OpenGLES',
                     '-framework QuartzCore',
                   ]
                 }
               },
               # TODO(kjellander): Make the code compile without disabling these.
               # See https://bugs.chromium.org/p/webrtc/issues/detail?id=3307
               'cflags': [
                 '-Wno-return-type',
               ],
               'xcode_settings': {
                 'WARNING_CFLAGS': [
                   '-Wno-return-type',
                 ],
               },
             }],
             ['OS=="mac"', {
               'sources': [
                 'objc/RTCNSGLVideoView.h',
                 'objc/RTCNSGLVideoView.m',
               ],
             }],
           ],
-          'xcode_settings': {
-            'CLANG_ENABLE_OBJC_ARC': 'YES',
-            'CLANG_WARN_OBJC_MISSING_PROPERTY_SYNTHESIS': 'YES',
-            'GCC_PREFIX_HEADER': 'objc/WebRTC-Prefix.pch',
-          },
         }
       ],
     }],  # OS=="ios"
   ],  # conditions
   'targets': [
     {
       'target_name': 'libjingle_peerconnection',
       'type': 'static_library',
       'dependencies': [
         '<(webrtc_root)/media/media.gyp:rtc_media',
@@ skipping 107 matching lines @@
               'AdditionalOptions': [
                 '-Wno-sign-compare',
               ],
             },
           },
         }],
       ],
     },  # target libjingle_peerconnection
   ],  # targets
 }