diff -urp rrdtool-1.2.21.orig/bindings/tcl/tclrrd.c rrdtool-1.2.21/bindings/tcl/tclrrd.c
--- rrdtool-1.2.21.orig/bindings/tcl/tclrrd.c	2007-05-01 16:42:02.000000000 -0400
+++ rrdtool-1.2.21/bindings/tcl/tclrrd.c	2007-05-02 09:44:32.000000000 -0400
@@ -19,7 +19,7 @@
 #include <unistd.h>
 #include <tcl.h>
 #include "../../src/rrd_tool.h"
-#include "../../rrd_format.h"
+#include "../../src/rrd_format.h"
 
 /* support pre-8.4 tcl */
 
Only in rrdtool-1.2.21.orig: rrdtool-1.2.21