diff --git a/configure.ac b/configure.ac
index 6f49dd88..0a1f430e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -100,6 +100,7 @@ AC_CHECK_FUNCS([\
 ])
 
 AC_SEARCH_LIBS([dlopen], [dl dld])
+AC_SEARCH_LIBS([clock_gettime], [rt])
 
 save_cflags="${CFLAGS}"
 CFLAGS="${CFLAGS} -std=c99"