--- rpl/configure.ac	2017/08/21 09:11:23	1.202
+++ rpl/configure.ac	2017/08/21 12:17:20	1.203
@@ -720,6 +720,9 @@ if test "$MOTIF_SUPPORT" = "-DMOTIF_SUPP
 	AC_CHECK_LIB(Xinerama, XineramaIsActive,,
 				 AC_MSG_ERROR([Can not find libXinerama !]))
 fi
+AC_CHECK_LIB(gomp, omp_get_num_procs,, AC_MSG_ERROR([Can not find libgomp !]))
+OPENMP=-gomp
+AC_SUBST(OPENMP)
 
 dnl Check for union semun
 AC_CHECK_TYPE([union semun], SEMUN=-DUNION_SEMUN, SEMUN=-UUNION_SEMUN, [[