Created attachment 179737 [details] patch to Mk/Uses/compiler.mk Upon advise by swills (mentor), I would like to ask for an exp-run for the change in https://reviews.freebsd.org/D9448 which uses devel/llvm39 for ports requiring a compiler with OpenMP support if clang was selected as compiler and we are on amd64. Looking forward to the fallout! Expected failure: math/openblas (using clang+OpenMP is unsupported upstream, we will need to USE_GCC there)
Patch in 210337 is the preferred solution. Hence, closing this.