--- Makefile.in.orig	Wed Sep 14 00:00:00 2005
+++ Makefile.in	Tue Nov  8 11:27:52 2005
@@ -5,8 +5,8 @@
 TITLE	= FD-
 VERMAJ	= __VERMAJ__
 VERSION	= __VERSION__
-PREFIX	= __PREFIX__
-CONFDIR	= __CONFDIR__
+PREFIX	?= __PREFIX__
+CONFDIR	?= __CONFDIR__
 BUILD	=
 MANSEC	= 1
 TOPDIR	= $(BUILD)$(PREFIX)