You know, as the compile errors all were in thread_win32.cpp I was
suspicious how the build would do with x86_64-win32-seh but that failed
because Mingw-w64 did not have the header file mutex.
As I have the llvm libcxx library with this mutex header file (among other
stuff) would there be a way to have Mingw-w64 use this library during the
build of llvm and clang or wouldn't that work?
Also is there any documentation for specifics in building llvm with