[libcxx-commits] [libcxxabi] fix cmake config error in llvm-libgcc (PR #187280)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne requested changes to this pull request.

It seems like `LIBCXXABI_USE_LLVM_UNWINDER` shouldn't be defined if you're using LLVM-libgcc, no? If that's correct, then you wouldn't encounter this error.

https://github.com/llvm/llvm-project/pull/187280