gtest's xcconfig files use USE_INTERNAL_SDK, but never define it. rdar://problem/23566856
Created attachment 268245 [details] proposed fix
Comment on attachment 268245 [details] proposed fix Adding the definition of USE_INTERNAL_SDK looks good. r=me Why are you duplicating the use of it to DebugProject and ReleaseProject? They both include General.xcconfig. This seems unnecessary.
I did it to match other projects, which have this snippet in DebugRelease.xcconfig (so that it doesn't affect production builds). It is possible to avoid duplication, but at the cost of doing things differently, which seems likely to cause confusion again in the future.
Committed http://trac.webkit.org/r194585