[libcxx-commits] [libcxx] [libcxx] [test] Detect mingw-w64 headers compatible with C++ module builds (PR #92893)

[Jacek Caban via libcxx-commits]

https://github.com/cjacek approved this pull request.

Fair enough. I generally think that checking feature macros is better than hardcoding versions, but `__mingw_static_ovr` not exactly a feature macro. LGTM, thanks.

https://github.com/llvm/llvm-project/pull/92893