--- configure.ac.orig	2011-06-21 17:30:15.000000000 -0500
+++ configure.ac	2011-08-31 09:26:32.000000000 -0500
@@ -796,7 +796,13 @@
 AC_MSG_RESULT($JOBCREATE)
 
 dnl We need pthreads by default in the MOM
-  AC_CHECK_LIB(pthread, pthread_create, MOMLIBS="$MOMLIBS -lpthread -lrt")
+  AC_CHECK_LIB(pthread, pthread_create, MOMLIBS="$MOMLIBS -lpthread")
+
+dnl u_threadpool.c falls back on gettimeofday() if clock_gettime() is unavailable
+  AC_CHECK_FUNC(clock_gettime, AC_DEFINE[HAVE_CLOCK_GETTIME], 
+    AC_CHECK_LIB(rt, clock_gettime,
+      [AC_DEFINE[HAVE_CLOCK_GETTIME]
+        MOMLIBS="$MOMLIBS -lrt"], []))
 
 case "$JOBCREATE" in
   yes) AC_DEFINE([USEJOBCREATE], 1, [Define to enable libjob job_create support])