http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47571
--- Comment #36 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-14 12:07:54 UTC --- CLOCK_REALTIME should be available, at least on POSIX compliant systems, but must it be defined as preprocessor macro? http://pubs.opengroup.org/onlinepubs/009695399/basedefs/time.h.html talks about manifest constants, not macros. So it wouldn't surprise me if it was defined in an enum rather than using #define. Alternatively to those undefs would be to do #ifdef CLOCK_MONOTONIC #define GF_CLOCK_MONOTONIC CLOCK_MONOTONIC #else #define GF_CLOCK_MONOTONIC CLOCK_REALTIME #endif and just keep using GF_CLOCK_MONOTONIC only in code guarded with HAVE_CLOCK_GETTIME or HAVE_CLOCK_GETTIME_LIBRT, or #ifdef CLOCK_MONOTONIC #define GF_CLOCK_MONOTONIC CLOCK_MONOTONIC #elif defined (HAVE_CLOCK_GETTIME) || defined (HAVE_CLOCK_GETTIME_LIBRT) #define GF_CLOCK_MONOTONIC CLOCK_REALTIME #endif if you prefer that.
