Fix gyptest-type-envvars.py for Xcode 5.0.0

pylib/gyp/xcode_emulation.py

 # Copyright (c) 2012 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.
 
 """
 This module contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
 
 import copy
@@ skipping 1303 matching lines @@
         xcode_settings.GetBundleResourceFolder()
     env['INFOPLIST_PATH'] = xcode_settings.GetBundlePlistPath()
     env['WRAPPER_NAME'] = xcode_settings.GetWrapperName()
 
   install_name = xcode_settings.GetInstallName()
   if install_name:
     env['LD_DYLIB_INSTALL_NAME'] = install_name
   install_name_base = xcode_settings.GetInstallNameBase()
   if install_name_base:
     env['DYLIB_INSTALL_NAME_BASE'] = install_name_base
+  if XcodeVersion() >= '0500' and not env.get('SDKROOT'):
+    sdk_root = xcode_settings._SdkRoot(configuration)
+    if not sdk_root:
+      sdk_root = xcode_settings._XcodeSdkPath('')
+    env['SDKROOT'] = sdk_root
 
   if not additional_settings:
     additional_settings = {}
   else:
     # Flatten lists to strings.
     for k in additional_settings:
       if not isinstance(additional_settings[k], str):
         additional_settings[k] = ' '.join(additional_settings[k])
   additional_settings.update(env)
 
@@ skipping 156 matching lines @@
       _FilterIOSArchitectureForSDKROOT(iphoneos_config_dict['xcode_settings'])
       _FilterIOSArchitectureForSDKROOT(config_dict['xcode_settings'])
   return targets
 
 def CloneConfigurationForDeviceAndEmulator(target_dicts):
   """If |target_dicts| contains any iOS targets, automatically create -iphoneos
   targets for iOS device builds."""
   if _HasIOSTarget(target_dicts):
     return _AddIOSDeviceConfigurations(target_dicts)
   return target_dicts