Since df0ba47c36f6bd0865e3286853b76d37e037c2d7 in llvm-project (November 5th 2021), clang built with mingw defaults to producing paths with forward slashes - thus, this hack no longer is needed.
Since df0ba47c36f6bd0865e3286853b76d37e037c2d7 in llvm-project (November 5th 2021), clang built with mingw defaults to producing paths with forward slashes - thus, this hack no longer is needed.