$OpenBSD$
--- decoder.c.orig	Thu Dec 22 17:30:58 2005
+++ decoder.c	Thu Dec 22 17:30:58 2005
@@ -13,7 +13,6 @@
 # include "config.h"
 #endif
 
-#define _XOPEN_SOURCE	600 /* we need the POSIX version of strerror_r() */
 
 #include <stdio.h>
 #include <string.h>
