diff -r ca0347086805 Makefile
--- a/Makefile	Thu Nov 02 18:59:50 2006 -0600
+++ b/Makefile	Thu Nov 02 19:00:05 2006 -0600
@@ -1,12 +1,11 @@
 
-KERNELDIR = ../kernel
+KERNELDIR ?= ../kernel
+PREFIX ?= /usr/local
 
 CFLAGS = -I $(KERNELDIR)/include $(autodepend-flags) -g
 CXXFLAGS = $(autodepend-flags) 
 
 autodepend-flags = -MMD -MF $(dir $*).$(notdir $*).d
-
-DESTDIR = /usr/local
 
 ifeq ($(shell uname -m), x86_64)
 LIBDIR = /lib64
@@ -25,10 +24,10 @@ flatfiles: test/simple.flat test/stringi
 	test/irq.flat test/sieve.flat test/bootstrap
 
 install:
-	install -D kvmctl.h $(DESTDIR)/include/kvmctl.h
+	install -D kvmctl.h $(DESTDIR)$(PREFIX)/include/kvmctl.h
 	install -D $(KERNELDIR)/include/linux/kvm.h \
-		$(DESTDIR)/include/linux/kvm.h
-	install -D libkvm.a $(DESTDIR)/$(LIBDIR)/libkvm.a
+		$(DESTDIR)$(PREFIX)/include/linux/kvm.h
+	install -D libkvm.a $(DESTDIR)$(PREFIX)/$(LIBDIR)/libkvm.a
 
 %.flat: %.o
 	gcc -nostdlib -o $@ -Wl,-T,flat.lds $^