--- makefile.orig	2008-10-09 05:07:40.000000000 +0800
+++ makefile	2014-06-24 15:09:56.936151781 +0800
@@ -3,14 +3,12 @@
 # see README for others
 PLATFORM=linux
 
-prefix = /usr
+prefix = ${PREFIX}
 sbindir = ${prefix}/sbin
-sharedir = ${prefix}/share
-mandir = ${sharedir}/man
+mandir = ${prefix}/man
 
 O=aoe.o bpf.o ${PLATFORM}.o ata.o
 CFLAGS += -Wall -g -O2
-CC = gcc
 
 vblade: $O
 	${CC} -o vblade $O
@@ -38,6 +36,6 @@ clean :
 	rm -f $O vblade
 
 install : vblade vbladed
-	install vblade ${sbindir}/
-	install vbladed ${sbindir}/
-	install vblade.8 ${mandir}/man8/
+	${INSTALL_PROGRAM} vblade $(DESTDIR)${sbindir}/
+	${INSTALL_SCRIPT} vbladed $(DESTDIR)${sbindir}/
+	${INSTALL_MAN} vblade.8 $(DESTDIR)${mandir}/man8/