diff -urNp flex-2.5.35.orig/flex.skl flex-2.5.35/flex.skl
--- flex-2.5.35.orig/flex.skl	2009-04-20 03:09:46.000000000 +0530
+++ flex-2.5.35/flex.skl	2009-04-20 07:46:58.000000000 +0530
@@ -217,6 +217,7 @@ m4preproc_include(`flexint.h')
 /* begin standard C++ headers. */
 #include <iostream> 
 #include <errno.h>
+#include <cstdio>
 #include <cstdlib>
 #include <cstring>
 /* end standard C++ headers. */