Index: pcb-mincut/graph.c
===================================================================
--- pcb-mincut/graph.c	(revision 33395)
+++ pcb-mincut/graph.c	(revision 33396)
@@ -90,6 +90,7 @@
 	}
 }
 
+#ifdef DEBUG_GR
 int gr_draw(gr_t *g, const char *name, const char *type)
 {
 	char *cmd;
@@ -129,6 +130,7 @@
 	pclose(f);
 	return 0;
 }
+#endif
 
 int gr_node_edges(gr_t *g, int node)
 {
Index: pcb-mincut/graph.h
===================================================================
--- pcb-mincut/graph.h	(revision 33395)
+++ pcb-mincut/graph.h	(revision 33396)
@@ -90,8 +90,10 @@
 /* print the connection matrix */
 void gr_print(gr_t *g, FILE *f, const char *prefix);
 
+#ifdef DEBUG_GR
 /* draw graph using graphviz/dot */
 int gr_draw(gr_t *g, const char *name, const char *type);
+#endif
 
 /* return total number of edges of a node */
 int gr_node_edges(gr_t *g, int node);