Makefile

export DEVKITPRO ?= /opt/devkitpro
export DEVKITARM ?= $(DEVKITPRO)/devkitARM

PREFIX := arm-none-eabi-
CC := $(PREFIX)gcc
LD := $(PREFIX)gcc
OBJCOPY := $(PREFIX)objcopy

CFLAGS := -mthumb -mthumb-interwork -O2 -Wall -Wextra -ffast-math -fno-builtin -mcpu=arm7tdmi -mtune=arm7tdmi
LDFLAGS := -specs=gba.specs -mthumb-interwork -Wl,-Map,build/output.map
INCLUDES := -I.

BUILD := build
TARGET := false_diagonal_test
SOURCES := main.c
OBJS := $(addprefix $(BUILD)/, $(SOURCES:.c=.o))

all: $(TARGET).gba

$(BUILD):
	@mkdir -p $(BUILD)

$(BUILD)/%.o: %.c | $(BUILD)
	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@

$(TARGET).elf: $(OBJS)
	$(LD) $(OBJS) $(LDFLAGS) -o $@

$(TARGET).gba: $(TARGET).elf
	$(OBJCOPY) -O binary $< $@
	@echo "Built $(TARGET).gba"

clean:
	@rm -rf $(BUILD) *.elf *.gba *.map *.sav

.PHONY: all clean