[Openmp-commits] [openmp] Avoid concurrency issues in LibompGetArchitecture (PR #151313)

[Alexander Grund via Openmp-commits]

Flamefire wrote:

I found the issue: Until CMake 3.19 there was a[ "bug" with ExternalProject](https://gitlab.kitware.com/cmake/cmake/-/issues/27122) that then got fixed, guarded by policy CMP0114 which was only enabled for LLVM 20 with https://github.com/llvm/llvm-project/commit/49de1541655cc71cfedbee10d6b4a4c12fc7e13b

So in LLVM 20+ using CMake 3.19+ avoids the issue.

https://github.com/llvm/llvm-project/pull/151313