llvm (clang++) now complains if OpenMP is not supported
llvm (clang++) now complains if OpenMP is not supported

tempbottle/primesieve,fredwang00/primesieve,kimwalisch/primesieve,kimwalisch/primesieve,ZahidDev/primesieve,fredwang00/primesieve,anatoliyrazin/primesieve,tempbottle/primesieve,kimwalisch/primesieve,tempbottle/primesieve,fredwang00/primesieve,ZahidDev/primesieve,anatoliyrazin/primesieve,anatoliyrazin/primesieve,ZahidDev/primesieve