diff -durN bird-1.0.5.orig/sysdep/unix/config.Y bird-1.0.5/sysdep/unix/config.Y
--- bird-1.0.5.orig/sysdep/unix/config.Y	Thu Jun  8 13:45:48 2000
+++ bird-1.0.5/sysdep/unix/config.Y	Mon Apr  8 15:08:12 2002
@@ -9,6 +9,7 @@
 CF_HDR
 
 #include "lib/unix.h"
+#include <stdio.h>
 
 CF_DECLS