On 9 Jul 2015, at 03:53, NGie Cooper <yaneurab...@gmail.com> wrote: > > $ cat ~/has_immintrin.c > #include <sys/cdefs.h> > > #if __has_include(<immintrin.h>) > #error "I have immintrin.h" > #else > #error "I don't have immintrin.h" > #endif > $ clang -c ~/has_immintrin.c > /home/ngie/has_immintrin.c:4:2: error: "I have immintrin.h" > #error "I have immintrin.h" > ^ > 1 error generated. > $ gcc -c ~/has_immintrin.c > /home/ngie/has_immintrin.c:6:2: error: #error "I don't have immintrin.h" > > Sadly this macro wasn't added until gcc 5.x: > https://gcc.gnu.org/gcc-5/changes.html
cdefs.h defines __has_include(x) to 0 if the compiler does not provide __has_include(), so this will also work with gcc in base (always claiming not to have immintrin.h). David _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
