commit abdf06d8b25e6af0f48a3f1d057a5cbdcf46e2a3 Author: Jacob Appelbaum <jacob@appelbaum.net> Date: Thu Apr 25 15:21:35 2013 -0700 Apparently the Hurd may put clock_gettime in lib rt --- configure.ac | 11 +++++++---- 1 files changed, 7 insertions(+), 4 deletions(-) diff --git a/configure.ac b/configure.ac index 92915fd..b520066 100644 --- a/configure.ac +++ b/configure.ac @@ -307,10 +307,13 @@ case "$host" in ;; *-gnu0.*) dnl This is a generic catch for GNU/Hurd variants - dnl This likely needs to be tuned to catch all - dnl clock_gettime is either part of libc or unavailable. - AC_CHECK_FUNC([clock_gettime], , - [AC_MSG_ERROR([Your system lacks clock_gettime])]) + dnl Check for clock_gettime. Some systems put it into -lc, while + dnl others use -lrt. Try the first and fallback to the latter. + RT_LIB= + AC_CHECK_FUNC([clock_gettime], [:], + [AC_CHECK_LIB([rt], [clock_gettime], [RT_LIB="-lrt"], + [AC_MSG_ERROR([Your system lacks clock_gettime])])]) + AC_SUBST(RT_LIB) dnl If the autoconf goo picks up a compiler that runs in pre-POSIX mode, dnl the fmemopen prototype is hidden causing the unit tests to segfault. dnl This can happen if gcc is a symlink to gcc46 and is preferred to clang.