Just looking for anyone interested to provide feedback on this: https://github.com/macports/macports-ports/pull/12933
It uses '-Xpreprocessor -fopenmp' to get Apple's clang to compile OpenMP code; it still relies on libomp for omp.h / -lomp, but doesn't require clang-x.x to compile. Not an official route, but it works; thanks to M.P. for the tip. Thanks, - Eric
