makefile

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CROSS = arm-elf-

CC =     $(CROSS)gcc
AS =     $(CROSS)as
AR =     $(CROSS)ar
LD =     $(CROSS)ld
NM =     $(CROSS)nm
RM =     rm
OBJCOPY = $(CROSS)objcopy
DUMP = $(CROSS)objdump

CFLAGS = -fno-builtin -nostdlib -fomit-frame-pointer -I.
AFLAGS = -I.
LDFLAGS= -L. -lstubs
DFLAGS  = -Dr

.EXPORT_ALL_VARIABLES:
 

OBJ = head.o  lab3.o

all:  lab3.bin

lab3.bin: lab3
	$(OBJCOPY) -O binary \
		--only-section=.init \
		--only-section=.text \
		--only-section=.rodata \
		--only-section=.data \
		--only-section=.bss lab3 lab3.bin
	rm $^

lab3: $(OBJ)
	$(LD) -p -X -T lab3.ld $(OBJ) $(LDFLAGS) -o lab3 -Map=lab3.map
	$(DUMP) -Dr lab3  > lab3.dump
	

%.o: %.c
	$(CC) $(CFLAGS) -c -o $@ $^
	$(DUMP) $(DFLAGS) $@ > $@.dump

%.o: %.S
	$(CC) $(AFLAGS) -c -o $@ $^
	$(DUMP) $(DFLAGS) $@ > $@.dump
	
.PHONY: clean
clean: 
	rm *.dump *.o *.bin *.map