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MCU ?= attiny88
AVRDUDE_PROGRAMMER ?= usbasp
AVRCC ?= avr-gcc
AVRCXX ?= avr-g++
AVRFLASH ?= avrdude
AVRNM ?= avr-nm
AVROBJCOPY ?= avr-objcopy
AVROBJDUMP ?= avr-objdump
MCU_FLAGS = -mmcu=attiny88 -DF_CPU=8000000UL
SHARED_FLAGS = ${MCU_FLAGS} -I. -Os -Wall -Wextra -pedantic
SHARED_FLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
SHARED_FLAGS += -fwhole-program -flto -mstrict-X
CFLAGS += ${SHARED_FLAGS} -std=c11
CXXFLAGS += ${SHARED_FLAGS} -std=c++11 -fno-rtti -fno-exceptions
ASFLAGS += ${MCU_FLAGS} -wA,--warn
LDFLAGS += -Wl,--gc-sections
AVRFLAGS += -U lfuse:w:0xee:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
AVRFLAGS += -U flash:w:build/main.hex
#AVRFLAGS += -U eeprom:w:main.eep
HEADERS = $(wildcard src/*.h)
ASFILES = $(wildcard src/*.S)
CFILES = $(wildcard src/*.c)
CXXFILES = $(wildcard src/*.cc)
OBJECTS = ${CFILES:src/%.c=build/%.o} ${CXXFILES:src/%.cc=build/%.o} ${ASFILES:src/%.S=build/%.o}
all: build build/main.elf
build:
mkdir -p build
build/%.hex: build/%.elf
${AVROBJCOPY} -O ihex -R .eeprom $< $@
build/%.eep: build/%.elf
${AVROBJCOPY} -j .eeprom --set-section-flags=.eeprom="alloc,load" \
--change-section-lma .eeprom=0 -O ihex $< $@
build/%.o: src/%.cc ${HEADERS}
${AVRCXX} ${CXXFLAGS} -o $@ $< -c -Wl,-Map=main.map,--cref
build/%.o: src/%.c ${HEADERS}
${AVRCC} ${CFLAGS} -o $@ $< -c -Wl,-Map=main.map,--cref
build/main.elf: ${OBJECTS}
${AVRCXX} ${CXXFLAGS} -o $@ $^ ${LDFLAGS}
@echo
@avr-size --format=avr --mcu=${MCU} $@
program: build/main.hex #main.eep
${AVRFLASH} -p ${MCU} -c ${AVRDUDE_PROGRAMMER} ${AVRFLAGS}
secsize: build/main.elf
${AVROBJDUMP} -hw -j.text -j.bss -j.data main.elf
funsize: build/main.elf
${AVRNM} --print-size --size-sort main.elf
.PHONY: all program secsize funsize
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