El 29 ago. 2016 12:36 a. m., "K. Macy" <km...@freebsd.org> escribió: > > On Sun, Aug 28, 2016 at 2:01 PM, K. Macy <km...@freebsd.org> wrote: > >>> > >> > >> With 11, one can even simply install devel/openmp which will only install the libopenmp bits from llvm, and after that, base cc can do openmp. > > > > This isn't really useful unless the clang in base knows where to find > > libomp. Considering that even the devel/llvm ports aren't configured > > properly for that I don't see -fopenmp working. Without patching > > makefiles or configure. So although this is better than having to > > installing a complete copy of the compiler for the sake of a single > > library it's still forcing FreeBSD users to jump through extra hoops > > that they don't have to with gcc or on other platforms. > > I just tried this on Ubuntu and it looks like even there clang doesn't > invoke ld correctly to make -fopenmp work. Both icc and gcc do this > automatically. Thus I wonder if anyone is actually using openmp in > earnest with clang. > > > mmacy@pandemonium:~$ clang++ -fopenmp omp.cpp > /usr/bin/ld: cannot find -liomp5 > clang-3.5: error: linker command failed with exit code 1 (use -v to > see invocation) > mmacy@pandemonium:~$ clang++-3.8 -fopenmp omp.cpp > /usr/bin/ld: cannot find -lomp > clang: error: linker command failed with exit code 1 (use -v to see invocation) > mmacy@pandemonium:~$ g++ -fopenmp omp.cpp > mmacy@pandemonium:~$ g++-4.9 -fopenmp omp.cpp > mmacy@pandemonium:~$ >
I'm writing from my cellphone away from my computer, so take this with a grain of salt: -L/usr/local/llvm38/lib _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"