$NetBSD: patch-ah,v 1.2 2006/05/23 10:25:47 tonio Exp $

--- chicken.h.orig	2006-05-22 23:05:17.000000000 +0200
+++ chicken.h
@@ -224,7 +224,7 @@ int strncasecmp(const char *one, const c
 # pragma warning(disable: 4101)
 #endif
 
-#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__)
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
 # define C_GNU_ENV
 #endif
 
