[ninja/mac] Add xcode_emulation support for -Wobjc-missing-property-synthesis.

test/ios/app-bundle/test-error.gyp

+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+{
+  'conditions': [
+    ['"<(GENERATOR)"=="ninja"', {
+      'make_global_settings': [
+        ['CC', '/usr/bin/clang'],
+        ['CXX', '/usr/bin/clang++'],
+      ],
+    }],
+  ],
+  'targets': [
+    {
+      'target_name': 'test_app',
+      'product_name': 'Test App Gyp',
+      'type': 'executable',
+      'product_extension': 'bundle',
+      'mac_bundle': 1,
+      'sources': [
+        'TestApp/main.m',
+        'TestApp/ViewController.mm',

[Nico, 2013/10/22 21:52:12]

Please add a c and a cc file too (can be empty)

[justincohen, 2013/10/23 01:58:14]

Done.

+      ],
+      'mac_bundle_resources': [
+        'TestApp/English.lproj/InfoPlist.strings',
+        'TestApp/English.lproj/MainMenu.xib',
+      ],
+      'link_settings': {
+        'libraries': [
+          '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
+          '$(SDKROOT)/System/Library/Frameworks/UIKit.framework',
+        ],
+      },
+      'xcode_settings': {
+        'OTHER_CFLAGS': [
+          '-fobjc-abi-version=2',
+        ],
+        'CLANG_WARN_OBJC_MISSING_PROPERTY_SYNTHESIS': 'YES',
+        'INFOPLIST_FILE': 'TestApp/TestApp-Info.plist',
+        'SDKROOT': 'iphonesimulator',  # -isysroot
+        'IPHONEOS_DEPLOYMENT_TARGET': '4.2',
+        'CONFIGURATION_BUILD_DIR':'build/Default',
+      },
+    },
+  ],
+}