78 lines
1.6 KiB
Makefile
78 lines
1.6 KiB
Makefile
CROSS_COMPILE ?= avr-
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TARGET_FILE ?= avr.elf
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MCU = attiny85
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# MCU = atmega8
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# C_FLAGS += -Wall -Werror
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C_FLAGS += -Os
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C_FLAGS += -mmcu=$(MCU)
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# C_FLAGS += -ffunction-sections
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# C_FLAGS += -fdata-sections
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# C_FLAGS += -std=c11
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# C_FLAGS += -pedantic
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# C_FLAGS += -pedantic-errors
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C_FLAGS += -Iinclude
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LD_FLAGS += -mmcu=$(MCU)
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DUDE_FLAGS = -p $(MCU)
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DUDE_FLAGS += -P /dev/spidev0.0
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DUDE_FLAGS += -c linuxspi
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DUDE_FLAGS += -b 10000
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CC = $(CROSS_COMPILE)gcc
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AS = $(CROSS_COMPILE)as
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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SIZE = $(CROSS_COMPILE)size
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AVRDUDE = avrdude
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OBJ_DIR := objs
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BIN_DIR := bin
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SRC_DIR := src
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C_SRCS = $(wildcard $(SRC_DIR)/*.c)
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C_OBJS = $(patsubst %.c,$(OBJ_DIR)/%.o,$(notdir $(C_SRCS)))
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OBJS = $(C_OBJS)
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TARGET = $(BIN_DIR)/$(TARGET_FILE)
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.PHONY: all
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all: $(TARGET)
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$(TARGET): $(OBJS) Makefile
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@mkdir -p $(BIN_DIR)
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$(CC) $(LD_FLAGS) $(LINKER_SCRIPT) $(OBJS) $(LD_LIBS) -o $@ -Wl,-Map=$(BIN_DIR)/$(notdir $(basename $@)).map
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$(OBJCOPY) -O ihex $(TARGET) $(subst .elf,.hex,$(TARGET))
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$(SIZE) $@
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$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
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@mkdir -p $(dir $@)
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@$(call makedep,$<,$@,$(patsubst %.c,%.d,$(OBJ_DIR)/$(notdir $<)),$(C_FLAGS))
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$(CC) -c $(C_FLAGS) -o $@ $<
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.PHONY: clean
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clean:
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rm -rf \
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$(OBJS) \
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$(patsubst %.o,%.d,$(OBJS)) \
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$(TARGET) \
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$(subst .elf,.map,$(TARGET)) \
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$(subst .elf,.hex,$(TARGET))
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.PHONY: flash
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flash: $(TARGET)
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gpio 22 off
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$(AVRDUDE) $(DUDE_FLAGS) -U flash:w:$(subst .elf,.hex,$(TARGET))
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gpio 22 on
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define makedep
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$(CC) -MM -MF $3 -MP -MT $2 $4 $1
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endef
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ifneq ($(MAKECMDGOALS),clean)
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-include $($(subst .o,.d,$(OBJS))
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endif
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