--- Makefile.orig	2013-06-13 08:11:38.000000000 +1000
+++ Makefile	2016-01-20 17:07:32.000000000 +1100
@@ -11,10 +11,10 @@
 bf2c.o: $(hdr)
 
 bf2c: $(obj)
-	$(CXX) -o $@ $(obj)
+	$(CXX) $(CXXFLAGS) -o $@ $(obj)
 
 clean:
 	rm bf2c gen_bf $(obj)
 
 install:
-	install bf2c gen_bf $(PREFIX)/bin
+	install bf2c gen_bf $(DESTDIR)$(PREFIX)/bin