.PHONY: kernel
kernel:
	./i686-elf-gcc/bin/i686-elf-gcc -c -o boot.o -ffreestanding boot.S
	ldc2 -march=x86 -mcpu=i686 --betterC -release -c -of=kernel_main.o kernel_main.d
	./i686-elf-gcc/bin/i686-elf-gcc -o kernel.elf -ffreestanding -nostdlib -T link.ld boot.o kernel_main.o

.PHONY: image
image: kernel
	rm -rf image
	mkdir -p image/iso/boot/grub
	echo 'set default="0"' >image/iso/boot/grub/grub.cfg
	echo 'set timeout=1' >>image/iso/boot/grub/grub.cfg
	echo 'menuentry "MyKernel" {' >>image/iso/boot/grub/grub.cfg
	echo '  insmod multiboot' >>image/iso/boot/grub/grub.cfg
	echo '  multiboot /kernel.elf' >>image/iso/boot/grub/grub.cfg
	echo '}' >>image/iso/boot/grub/grub.cfg
	cp kernel.elf image/iso
	grub-mkrescue -o image.img image/iso

run: image
	qemu-system-x86_64 -hda image.img