--- foo/Makefile.orig   2013-04-16 10:25:18.837249297 -0400
+++ foo/Makefile        2013-04-16 10:28:32.113926986 -0400
@@ -24,7 +24,7 @@
 CFLAGS=-Wall -Winline -O2 -g $(BIGFILES)

 # Where you want it installed when you do 'make install'
-PREFIX=/usr/local
+PREFIX=$(BASEDIR)/system


 OBJS= blocksort.o  \