CC = i386-elf-gcc
CFLAGS = -Wall -Wextra -nostdlib -nostartfiles -nodefaultlibs

LD = i386-elf-ld
LDFLAGS = -T linker.ld

OBJ =  loader.o kernel.o io.o mem.o

qemu: os.iso
	qemu -m 16 -boot cd -cdrom os.iso

os.iso: kernel
	cp kernel os-isofiles/boot/kernel
	genisoimage -R -b boot/grub/stage2_eltorito -no-emul-boot -boot-load-size 4 -boot-info-table -o os.iso os-isofiles

loader.o: loader.s
	yasm -f elf -o loader.o loader.s

kernel: linker.ld $(OBJ)
	i386-elf-ld -T linker.ld -o kernel $(OBJ)

clean:
	rm -f *.o
	rm -f kernel

distclean: clean
	rm -f os.iso