Add -lrt for clock_gettime() in glibc < 2.17.

Some tools use clock_gettime() which requires building with -lrt for
versions of glibc before 2.17.

Signed-off-by: David Gstir <david@sigma-star.at>

diff --git a/configure.ac b/configure.ac
index 393c2eb9f3a34f654b68b8fa83f4f1c642cf2736..9c8666c4d6af7e2778a758837472a3554e659c04 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,9 @@ AC_PROG_CC
 AC_PROG_INSTALL
 
 
+AC_SEARCH_LIBS([clock_gettime],[rt posix4])
+AC_CHECK_FUNCS([clock_gettime])
+
 AC_ARG_ENABLE([tests],
        [AS_HELP_STRING([--disable-tests], [Compile test programs])],
        [case "${enableval}" in