--- Makefile.orig	2014-06-27 10:13:06.740734383 +0800
+++ Makefile	2014-06-27 10:13:33.015750707 +0800
@@ -1,8 +1,8 @@
 install:
-	@install jailctl ${PREFIX}/sbin
-	@install jailctl.1.gz ${PREFIX}/man/man1
-	@install jails.conf.1.gz ${PREFIX}/man/man1
-	@install jails.conf.sample ${PREFIX}/etc
-	@install jails.sh ${PREFIX}/etc/rc.d
-	@install -d ${PREFIX}/jails
-	@cp -R addons ${PREFIX}/jails
+	@install jailctl $(DESTDIR)${PREFIX}/sbin
+	@install jailctl.1.gz $(DESTDIR)${PREFIX}/man/man1
+	@install jails.conf.1.gz $(DESTDIR)${PREFIX}/man/man1
+	@install jails.conf.sample $(DESTDIR)${PREFIX}/etc
+	@install jails.sh $(DESTDIR)${PREFIX}/etc/rc.d
+	@install -d $(DESTDIR)${PREFIX}/jails
+	@cp -R addons $(DESTDIR)${PREFIX}/jails