Index: coot-surface/Makefile.am
===================================================================
--- coot-surface/Makefile.am	(revision 3478)
+++ coot-surface/Makefile.am	(working copy)
@@ -29,4 +29,4 @@
 
 libcoot_surface_la_LIBADD = \
 	$(top_builddir)/surface/libccp4mg-surface.la \
-	$(GLUT_LIBS) $(CLIPPER_LIBS) $(MMDB_LIBS) 
+	$(GLUT_LIBS) $(CLIPPER_LIBS) $(MMDB_LIBS) -lGL