CC=i686-elf-gcc

.PHONY: iso run clean

%.o: %.c
	$(CC) -c $< -o $@ -std=gnu99 -mgeneral-regs-only -ffreestanding -O2 -Wall -Wextra -pedantic -I.

bootstrap.o: bootstrap.s
	i686-elf-as bootstrap.s -o bootstrap.o

kernel.bin: bootstrap.o vga.o std/std.o std/kstd.o cpu/idt.o cpu/pic.o cpu/exception.o kernel.o
	$(CC) -T linker.ld -o $@ -ffreestanding -O2 -nostdlib -lgcc $^

iso: kernel.bin
	mkdir -p isodir/boot/grub
	cp kernel.bin isodir/boot/kernel.bin
	cp extra/grub.cfg isodir/boot/grub/grub.cfg
	grub-mkrescue -o generated-iso.iso isodir

run: iso
	qemu-system-i386 -d int -M smm=off -cdrom generated-iso.iso

clean:
	rm -rf *.o kernel.bin *.iso isodir/