[libc-commits] [libc] [llvm] [openmp] [LLVM] Fix and adjust runtime multilibs builds (PR #188303)

[Joseph Huber via libc-commits]

jhuber6 wrote:

I think I should split this into the OpenMP / Offload fixes that just set up the subdir correctly. The failures here are due to bizarre handling with the triples. It seems like some of the bots don't build `libc` through the runtimes interface, so these variables aren't always set.

https://github.com/llvm/llvm-project/pull/188303