make basename work

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1666 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 8aa7156..a24889f 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -6,6 +6,7 @@
 
 
 #include <sys/stat.h>
+#include <libgen.h>
 
 #ifdef WIN32
 #include "strftime.h"