Index: bootloader/Makefile
--- bootloader/Makefile.orig
+++ bootloader/Makefile
@@ -14,7 +14,8 @@
 # platforms, make sure to use gmake to build this project
 #
 OBJS= hex.o bootloader.o main.o
-CFLAGS= -g -Wall
+COPTFLAGS= -g -Wall
+CFLAGS?= ${COPTFLAGS}
 CXXFLAGS= $(CFLAGS)
 LDFLAGS= -g
 LDLIBS=
