--- Makefile.orig
+++ Makefile
@@ -1,5 +1,5 @@
 CC ?= gcc
-CFLAGS += -std=c99 -Wall -Wextra -pedantic -MMD -ggdb
+override CFLAGS += -std=c99 -Wall -Wextra -pedantic -MMD -ggdb
 
 TARGETS = f3write f3read
 EXPERIMENTAL_TARGETS = f3probe f3brew f3fix
@@ -23,10 +23,10 @@
 	$(INSTALL) -oroot -groot -m755 $(EXPERIMENTAL_TARGETS) $(PREFIX)/bin
 
 f3write: utils.o f3write.o
-	$(CC) -o $@ $^ -lm
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ -lm
 
 f3read: utils.o f3read.o
-	$(CC) -o $@ $^
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ 
 
 f3probe: libutils.o libdevs.o libprobe.o f3probe.o
 	$(CC) -o $@ $^ -lm -ludev