[libcxx-commits] [libcxxabi] [libc++abi] Retain the old CMP0155 behavior for GCC compatibility (PR #232803)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 approved this pull request.

It doesn't make sense to me that libc++abi is affected but not libc++, but I don't want to block updating CMake on my lack of understanding on why this is the case. Worse-case we'll have a follow-up patch.

https://github.com/llvm/llvm-project/pull/232803