75 lines
2.3 KiB
Makefile
75 lines
2.3 KiB
Makefile
# -----------------------------------------------------------------------------
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# makefile for the ergoDOX firmware
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# -----------------------------------------------------------------------------
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CFLAGS := -mmcu=atmega32u4 # processor type (teensy 2.0); must match real life
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CFLAGS += -DF_CPU=16000000 # processor frequency; must match initialization in source
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CFLAGS += -std=gnu99 # use C99 plus GCC extensions
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CFLAGS += -Os -flto # optimize for size
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CFLAGS += -Wall -Werror # enable lots of common warnings
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CFLAGS += -fpack-struct # pack all structure members together without holes
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CFLAGS += -fshort-enums # allocate compact enums
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CFLAGS += -ffunction-sections # \ place each function or data into its own
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CFLAGS += -fdata-sections # / section in the output file
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CFLAGS += -pipe # faster build
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LDFLAGS += -Wl,--relax # for some linker optimizations
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LDFLAGS += -Wl,--gc-sections # discard unused functions and data
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SRC := main.c
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CC := avr-gcc
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OBJCOPY := avr-objcopy
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SIZE := avr-size
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CHKSUM := md5sum
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MAKEHEADERS := makeheaders
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# -----------------------------------------------------------------------------
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# -----------------------------------------------------------------------------
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.PHONY: all clean
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all: firmware.hex firmware.eep
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@echo
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@echo '---------------------------------------------------------------'
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@echo
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$(SIZE) --target=ihex firmware.hex
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@echo
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$(SIZE) --target=ihex firmware.eep
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@echo
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$(CHKSUM) firmware.hex firmware.eep
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@echo
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@echo '---------------------------------------------------------------'
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@echo
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clean:
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@echo
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@echo --- cleaning ---
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git clean -dX -f # remove ignored files and directories
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# -----------------------------------------------------------------------------
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.SECONDARY:
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firmware.hex: firmware.elf
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@echo
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@echo --- making $@ ---
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$(OBJCOPY) -O ihex \
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-R .eeprom -R .fuse -R .lock -R .signature \
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$< $@
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firmware.eep: firmware.elf
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@echo
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@echo --- making $@ ---
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-$(OBJCOPY) -O ihex \
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-j .eeprom \
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--set-section-flags=.eeprom="alloc,load" \
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--change-section-lma .eeprom=0 \
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--no-change-warnings \
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$< $@ || exit 0
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firmware.elf:
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@echo
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@echo --- making $@ ---
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$(MAKEHEADERS) $(SRC)
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$(CC) $(strip $(CFLAGS)) $(strip $(LDFLAGS)) $(SRC) --output $@
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