Prevent multiple inclusions.

diff --git a/src/graph.h b/src/graph.h
index 1b796406c2d416fe4285bf2aae4495d531ed8c39..3ce02f38ad61bed31899296d63823c227701675e 100644 (file)
--- a/src/graph.h
+++ b/src/graph.h
@@ -17,9 +17,14 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: graph.h,v 1.1.2.5 2003/07/12 17:41:45 guus Exp $
+    $Id: graph.h,v 1.1.2.6 2003/09/03 16:20:33 guus Exp $
 */
 
+#ifndef __TINC_GRAPH_H__
+#define __TINC_GRAPH_H__
+
 extern void graph(void);
 extern void mst_kruskal(void);
 extern void sssp_bfs(void);
+
+#endif /* __TINC_GRAPH_H__ */