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|
OUT_DIR = out
SRC = src
BUILD = build
TARGET = i686-elf
ISO = myos
ASM := $(sort $(shell find $(SRC) -name '*.s'))
C := $(sort $(shell find $(SRC) -name '*.c'))
INCLUDE_DIR = $(SRC)/include
INCLUDES := -I$(INCLUDE_DIR)
ASSEMBLER = $(TARGET)-as
CC = $(TARGET)-gcc
CFLAGS = $(INCLUDES) -std=gnu99 -ffreestanding -O2 -Wall -Wextra
TEST_FLAGS = -nographic
LINK_FILE = linker.ld
LDFLAGS = -O2 -nostdlib -lgcc -ffreestanding
OBJS =
C_OBJS := $(C:$(SRC)/%.c=$(BUILD)/C/%.o)
ASM_OBJS := $(ASM:$(SRC)/%.s=$(BUILD)/ASM/%.o)
OBJS += $(C_OBJS)
OBJS += $(ASM_OBJS)
DEPS := $(OBJS:.o=.d)
.PHONY: all
all: $(OUT_DIR)/$(ISO).iso
run: all
qemu-system-i386 -cdrom $(OUT_DIR)/$(ISO).iso
$(OUT_DIR)/$(ISO).iso : $(OUT_DIR)/isodir/boot/$(ISO).bin
grub-mkrescue -o $@ $(OUT_DIR)/isodir
$(OUT_DIR)/isodir/boot/$(ISO).bin : $(OBJS)
$(CC) -T $(SRC)/$(LINK_FILE) -o $@ $(LDFLAGS) $^
$(BUILD)/ASM/%.o: $(SRC)/%.s
mkdir -p $(BUILD)
mkdir -p $(BUILD)/ASM
mkdir -p $(@D)
$(ASSEMBLER) $^ -o $@
$(BUILD)/C/%.o: $(SRC)/%.c
mkdir -p $(BUILD)
mkdir -p $(BUILD)/C
mkdir -p $(@D)
$(CC) $(CFLAGS) -c $^ -o $@
clean:
rm -rf $(BUILD)
rm -rf $(OUT_DIR)/$(ISO).iso
rm -rf $(OUT_DIR)/isodir/boot/$(ISO).bin
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