[PATCH] [Clang] Implement basic MinGW32 version-independent installation detection

[Chris Kay]

>>! In D4177#7, @yaron.keren wrote:
> What are the problems with the build system? are you using cmake?

I am. It seems add_{clang,llvm}_library() macros were added, but as of yet the rest of the project has not been updated to use them properly. This results in a lot of CMake policy warnings, and about 98% into the build process, I get missing reference errors inside liblibClang.a when trying to build diagtool.exe. I have so far not had much luck in fixing this for myself, as I am fairly uneducated on the changes introduced, and it doesn't look as if I can temporarily disable building diagtool. I can submit a bug report if you wish, as I can still build release 3.4 smoothly.

http://reviews.llvm.org/D4177