http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47571
--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-02-01 15:29:50 UTC --- For the symbols defined in librt, cf. http://refspecs.freestandards.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/librt.html Regarding http://gcc.gnu.org/ml/fortran/2011-01/msg00326.html >> 2) Uses clock_gettime() if available and (In reply to comment #3) > clock_gettime is defined in librt, so if libgfortran started using librt > symbols It probably means that one needs to use libgfortran.spec for that as f951 has no knowledge whether clock_gettime is available. Is is clear that librt exists if clock_gettime is available? librt seems to be a Linux-specific library-name choice. If not, one could consider moving back to a clock_gettime-free libgfortran.