https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80502
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- _OPENMP_SIMD is a bad idea, that namespace is reserved for OpenMP, so unless it shows up in the OpenMP standard, it shouldn't be added. Why do you need a macro? Just use #pragma omp simd etc. unconditionally, compilers that don't have support for such pragmas will just ignore those.