tools: fix gyp to work on MacOSX without XCode

Shigeki Ohtsu · rvagg · commit cbd358ce3350 · 2015-11-06T11:05:35.000+11:00
This issue has already submitted to the upstream in https://code.google.com/p/gyp/issues/detail?id=477 Use this commit until the upstream is to be fixed. PR-URL: #1325 Reviewed-By: Fedor Indutny <fedor@indutny.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
diff --git a/tools/gyp/pylib/gyp/xcode_emulation.py b/tools/gyp/pylib/gyp/xcode_emulation.py
@@ -1495,6 +1495,8 @@ def _GetXcodeEnv(xcode_settings, built_products_dir, srcroot, configuration,
     sdk_root = xcode_settings._SdkRoot(configuration)
     if not sdk_root:
       sdk_root = xcode_settings._XcodeSdkPath('')
+    if sdk_root is None:
+      sdk_root = ''
     env['SDKROOT'] = sdk_root
 
   if not additional_settings:
