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# Makefile.avr - AVR part Makefile.
#
# Flags.

AVR_CFLAGS := $(CFLAGS) -mmcu=$(AVR_MCU)
AVR_ASFLAGS := $(ASFLAGS) -mmcu=$(AVR_MCU)
AVR_CPPFLAGS := $(CPPFLAGS) $(AVR_DEFS)
AVR_LDFLAGS := $(LDFLAGS)
AVR_LDLIBS := $(LDLIBS) $(AVR_LIBS)

AVR_CC := avr-gcc
AVR_OBJCOPY := avr-objcopy
AVR_OBJDUMP := avr-objdump
AVR_SIZE := avr-size --mcu=$(AVR_MCU) -C
AVR_COMPILE.c = $(AVR_CC) $(AVR_CFLAGS) $(AVR_CPPFLAGS) -c
ifdef L
AVR_COMPILE.c += -Wa,-adhlns=$(@:%.avr.o=%.c.avr.lst)
endif
AVR_COMPILE.S := $(AVR_CC) $(AVR_ASFLAGS) $(AVR_CPPFLAGS) -c
AVR_LINK.o := $(AVR_CC) $(AVR_CFLAGS) $(AVR_LDFLAGS)

# Main rules.

avr: elf lst hex size

simu: simuelf

.PHONY: avr simu clean.avr clean.simu elf simuelf lst \
	text hex srec bin eeprom ehex esrec ebin

# General rules.

AVR_PROGS += $(PROGS)
AVR_ELFS := $(AVR_PROGS:%=%.avr.elf)
AVR_SIMU_ELFS := $(SIMU_PROGS:%=%.avr.simu.elf)
AVR_SOURCES := $(filter-out %.host.c,$(ALL_SOURCES))
AVR_C_SOURCES := $(filter %.c,$(AVR_SOURCES))
AVR_S_SOURCES := $(filter %.S,$(AVR_SOURCES))
AVR_OBJECTS := $(AVR_C_SOURCES:%.c=$(OBJDIR)/%.avr.o) \
	       $(AVR_S_SOURCES:%.S=$(OBJDIR)/%.avr.o)
AVR_SIMU_OBJECTS := $(AVR_OBJECTS:%.avr.o=%.avr.simu.o)

elf: $(AVR_ELFS)
simuelf: $(AVR_SIMU_ELFS)
lst: $(AVR_PROGS:%=%.avr.lst)

define AVR_PROG_template
$(1).avr.elf: $$(patsubst %.S,$(OBJDIR)/%.avr.o,\
	$$(patsubst %.c,$(OBJDIR)/%.avr.o,\
	$$(filter-out %.host.c,$$($(1)_SOURCES))))
endef

$(foreach prog,$(AVR_PROGS),$(eval $(call AVR_PROG_template,$(prog))))

define SIMU_PROG_template
$(1).avr.simu.elf: $$(patsubst %.S,$(OBJDIR)/%.avr.simu.o,\
	$$(patsubst %.c,$(OBJDIR)/%.avr.simu.o,\
	$$(filter-out %.host.c,$$($(1)_SOURCES))))
endef

$(foreach prog,$(SIMU_PROGS),$(eval $(call SIMU_PROG_template,$(prog))))

$(AVR_ELFS) $(AVR_SIMU_ELFS):
	$(AVR_LINK.o) $^ $(AVR_LDLIBS) -o $@

%.avr.lst: %.avr.elf
	$(AVR_OBJDUMP) -h -S $< > $@

$(OBJDIR)/%.avr.o: %.c | $(OBJDIR)
	$(AVR_COMPILE.c) -o $@ $<

$(OBJDIR)/%.avr.simu.o: %.c | $(OBJDIR)
	$(AVR_COMPILE.c) -DSIMU=1 -o $@ $<

$(OBJDIR)/%.avr.o: %.S | $(OBJDIR)
	$(AVR_COMPILE.S) -o $@ $<

$(OBJDIR)/%.avr.simu.o: %.S | $(OBJDIR)
	$(AVR_COMPILE.S) -DSIMU=1 -o $@ $<

# Dependency checking.
-include $(AVR_OBJECTS:%.avr.o=%.avr.d)
-include $(AVR_SIMU_OBJECTS:%.avr.simu.o=%.avr.d)

# Rules for building the .text rom images.

TEXTS := $(AVR_PROGS:%=%.hex) $(AVR_PROGS:%=%.bin) $(AVR_PROGS:%=%.srec)

text: hex

hex: $(AVR_PROGS:%=%.hex)
bin: $(AVR_PROGS:%=%.bin)
srec: $(AVR_PROGS:%=%.srec)
size: $(AVR_PROGS:%=%.size)

%.hex: %.avr.elf
	$(AVR_OBJCOPY) -j .text -j .data -O ihex $< $@

%.srec: %.avr.elf
	$(AVR_OBJCOPY) -j .text -j .data -O srec $< $@

%.bin: %.avr.elf
	$(AVR_OBJCOPY) -j .text -j .data -O binary $< $@

%.size: %.avr.elf
	$(AVR_SIZE) $< | grep Full

# Rules for building the .eeprom rom images.

EEPROMS := $(AVR_PROGS:%=%_eeprom.hex) $(AVR_PROGS:%=%_eeprom.bin) \
	   $(AVR_PROGS:%=%_eeprom.srec)

eeprom: ehex

ehex: $(AVR_PROGS:%=%_eeprom.hex)
ebin: $(AVR_PROGS:%=%_eeprom.bin)
esrec: $(AVR_PROGS:%=%_eeprom.srec)

%_eeprom.hex: %.avr.elf
	$(AVR_OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@

%_eeprom.srec: %.avr.elf
	$(AVR_OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O srec $< $@

%_eeprom.bin: %.avr.elf
	$(AVR_OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O binary $< $@

# Cleaning.

clean.avr:
	rm -f $(OBJDIR)/*.avr.o $(OBJDIR)/*.avr.d $(AVR_ELFS) \
		*.avr.lst *.avr.map $(TEXTS) $(EEPROMS)

clean.simu:
	rm -f $(OBJDIR)/*.avr.simu.o $(OBJDIR)/*.avr.simu.d $(AVR_SIMU_ELFS)