Initial commit

Makefile

@@ -0,0 +1,39 @@
+OBJCOPY = avr-objcopy
+CC = avr-gcc
+BUILD = .build
+TARGET = main
+
+OPT = s
+CFLAGS = -Wall -Wextra -std=c18 -O$(OPT) -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -Iinclude
+LDFLAGS = -Wall -Wextra -O$(OPT) -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p
+
+SRC = \
+src/main.c \
+src/keyboard.c \
+src/fifo.c \
+src/scancode.c
+
+OBJ = $(addprefix $(BUILD)/, $(notdir $(SRC:.c=.o)))
+vpath %.c $(sort $(dir $(SRC)))
+
+.PHONY: all clean
+
+all: $(BUILD) $(BUILD)/$(TARGET).bin
+
+%.hex: %.elf | $(BUILD)
+	$(OBJCOPY) -O ihex -R .eeprom $< $@
+
+%.bin: %.hex | $(BUILD)
+	$(OBJCOPY) -I ihex -O binary $< $@
+
+$(BUILD)/%.o: %.c Makefile | $(BUILD)
+	$(CC) -c $(CFLAGS) $< -o $@
+
+$(BUILD)/$(TARGET).elf: $(OBJ) Makefile
+	$(CC) $(LDFLAGS) $(OBJ) -o $@
+
+$(BUILD):
+	mkdir $@
+
+clean:
+	rm -fr $(BUILD)