[libcxx-commits] [libcxx] [libcxxabi] [libcxx][cmake] Allow using FatLTO in libc++ builds (PR #112277)

[Petr Hosek via libcxx-commits]

petrhosek wrote:

Why cannot we just set `LLVM_ENABLE_FATLTO` in our cache files?

https://github.com/llvm/llvm-project/pull/112277