--- a/Makefile
+++ b/Makefile
@@ -29,8 +29,8 @@ CPPFLAGS_STD ?= -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 \
 CPPFLAGS += $(CPPFLAGS_STD) -DHEXER_VERSION=\"1.0.4\"
 
 #  -- Which compiler? --
-CC ?= cc
-CC_FOR_BUILD ?= $(CC)
+CC := cc
+CC_FOR_BUILD := $(CC)
 CFLAGS ?= -O
 LDFLAGS ?=
 LDLIBS = $(LTERMCAP) -lm
@@ -72,7 +72,7 @@ $(MYC): calc.c config.h
 	$(CC) $(LDFLAGS) $(CPPFLAGS) $(CFLAGS) -DMYCALC=1 -o $@ calc.c -lm
 
 bin2c: bin2c.c
-	$(CC_FOR_BUILD) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ bin2c.c
+	$(CC_FOR_BUILD) $(HOSTCPPFLAGS) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ bin2c.c
 
 helptext.c: help.txt bin2c
 	./bin2c -n helptext -o $@ help.txt
