[CMake] [macho_embedded] Check to make sure the compiler supports the architectures before generating build targets
[CMake] [macho_embedded] Check to make sure the compiler supports the architectures before generating build targets

If we don't check the compiler's capabilities we end up generating build targets that the compiler might not be able to build.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@252525 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt