--- rpl/configure.ac	2017/08/03 17:17:41	1.200
+++ rpl/configure.ac	2017/08/21 09:06:02	1.201
@@ -394,7 +394,7 @@ else
 fi)
 
 if test "$MOTIF_SUPPORT" = "-DMOTIF_SUPPORT"; then
-	libX="$X_LIBS -lXt -lX11 -lXext"
+	libX="$X_LIBS -lXt -lX11 -lXext -lXinerama"
 	LIBMOTIF="\$(top_builddir)/tools/$OPENMOTIF/install/lib/libXm.a \
 			\$(top_builddir)/tools/$LIBXPM/src/.libs/libXpm.a"
 	INCMOTIF="-I\$(top_srcdir)/tools/$OPENMOTIF/lib \
@@ -710,6 +710,10 @@ AC_CHECK_LIB(m, main,, AC_MSG_ERROR([Can
 AC_CHECK_LIB(c, pthread_mutex_init,,
 			 [AC_CHECK_LIB(pthread, main,,
 			 AC_MSG_ERROR([Can not find libpthread !]))])
+if test "$MOTIF_SUPPORT" = "-DMOTIF_SUPPORT"; then
+	AC_CHECK_LIB(Xinerama, XineramaIsActive,,
+				 AC_MSG_ERROR([Can not find libXinerama !]))
+fi
 
 dnl Check for union semun
 AC_CHECK_TYPE([union semun], SEMUN=-DUNION_SEMUN, SEMUN=-UUNION_SEMUN, [[