[flang-commits] [clang] [flang] [llvm] [openmp] [Flang] Move builtin .mod generation into runtimes (Reapply #137828) (PR #171515)

[Michael Kruse via flang-commits]

Meinersbur wrote:

> moving of `GetToolchainDirs.cmake` to `cmake/Modules`, and changes to `runtimes/CMakeLists.txt` would ideally be split into separate PRs

#171610

https://github.com/llvm/llvm-project/pull/171515