[libcxx-commits] [libcxx] [libcxxabi] [libc++] Split the monolithic __threading_support header (PR #79654)

[Nico Weber via libcxx-commits]

nico wrote:

We don't use upstream's cmake files. We do build libc++ and libc++abi at the same time, but sometimes the revisions are off by a bit, since both are autoupdated independently.

Happy to go into as much detail as you want :)

https://github.com/llvm/llvm-project/pull/79654