$NetBSD: patch-aa,v 1.1.1.1 2003/06/03 14:32:21 wiz Exp $

--- Makefile.orig	Sat Jan  5 17:09:37 2002
+++ Makefile	Fri Nov  1 15:25:12 2002
@@ -11,7 +11,9 @@
 
 CFLAGS=-Wall -O2
 #DATA_PREFIX=$(PWD)/data/
+ifndef PREFIX
 PREFIX=/usr/local
+endif
 MAN_PREFIX=$(PREFIX)
 BIN_PREFIX=$(PREFIX)/bin
 DATA_PREFIX=$(PREFIX)/share/defendguin/