--- Makefile.orig	2009-03-21 16:07:49.000000000 +0300
+++ Makefile	2009-10-24 14:55:55.000000000 +0400
@@ -1,4 +1,8 @@
-prefix=/usr/local
+ifdef PREFIX
+prefix = $(PREFIX)
+else
+prefix = '/usr/local'
+endif
 sbindir=$(prefix)/sbin
 datadir=$(prefix)/share
 mandir=$(datadir)/man