$NetBSD: patch-mi,v 1.1 2013/01/10 16:17:10 ryoon Exp $

--- config/config.mk.orig	2012-10-23 19:42:27.000000000 +0000
+++ config/config.mk
@@ -92,7 +92,7 @@ AUTOCONF_TOOLS	= $(topsrcdir)/build/auto
 # but save the version to allow multiple versions of the same base
 # platform to be built in the same tree.
 #
-ifneq (,$(filter FreeBSD HP-UX Linux NetBSD OpenBSD SunOS,$(OS_ARCH)))
+ifneq (,$(filter DragonFly FreeBSD HP-UX Linux NetBSD OpenBSD SunOS,$(OS_ARCH)))
 OS_RELEASE	:= $(basename $(OS_RELEASE))
 
 # Allow the user to ignore the OS_VERSION, which is usually irrelevant.