--- Makefile.orig	2014-06-27 12:10:03.585250543 +0800
+++ Makefile	2014-06-27 12:10:35.801266135 +0800
@@ -7,16 +7,16 @@ INSTALL_SCRIPT?=	install -c -o root -g w
 SUBDIRS=	files lang
 
 install:
-	@rm -rf ${PREFIX}/livecd/
-	@mkdir -p ${PREFIX}/livecd
-	@${INSTALL_DATA} README* CHANGELOG.TXT ${PREFIX}/livecd/
-	@${INSTALL_SCRIPT} livecd.sh ${PREFIX}/livecd/
+	@rm -rf $(DESTDIR)${PREFIX}/livecd/
+	@mkdir -p $(DESTDIR)${PREFIX}/livecd
+	@${INSTALL_DATA} README* CHANGELOG.TXT $(DESTDIR)${PREFIX}/livecd/
+	@${INSTALL_SCRIPT} livecd.sh $(DESTDIR)${PREFIX}/livecd/
 	@for subdir in ${SUBDIRS} ; do \
-		mkdir -p ${PREFIX}/livecd/$${subdir} ; \
-		${INSTALL_DATA} $${subdir}/* ${PREFIX}/livecd/$${subdir}/ ; \
+		mkdir -p $(DESTDIR)${PREFIX}/livecd/$${subdir} ; \
+		${INSTALL_DATA} $${subdir}/* $(DESTDIR)${PREFIX}/livecd/$${subdir}/ ; \
 	done
-	@mkdir -p ${PREFIX}/livecd/scripts
-	@${INSTALL_SCRIPT} scripts/* ${PREFIX}/livecd/scripts/
+	@mkdir -p $(DESTDIR)${PREFIX}/livecd/scripts
+	@${INSTALL_SCRIPT} scripts/* $(DESTDIR)${PREFIX}/livecd/scripts/
 		
 deinstall:
 	@rm -rf ${PREFIX}/livecd/