[libc-commits] [libc] [libcxx] [libcxxabi] [libunwind] [cmake] Normalize TARGET_SUBDIR paths (PR #138524)

[Louis Dionne via libc-commits]

ldionne wrote:

Merging since this is both small and seems obviously correct. I technically don't have oversight of libc, but I don't think the owners would oppose this change.

https://github.com/llvm/llvm-project/pull/138524