--- fpackutil.c.orig	2012-07-18 05:36:42.000000000 +0900
+++ fpackutil.c	2012-08-10 01:28:12.000000000 +0900
@@ -5,6 +5,7 @@
 #include <time.h>
 #include <float.h>
 #include <signal.h>
+#include <ctype.h>
 
 /* #include  "bzlib.h"  only for experimental purposes */