KERNEL_VERSION   = 5.11.6
BUSYBOX_VERSION  = 1.33.0
SYSLINUX_VERSION = 6.03

all: check-deps busybox linux initrd

check-deps:
	scripts/check-deps.sh

initrd:
	@mkdir -p $@
	@cp -R busybox-${BUSYBOX_VERSION}/_install/* initrd/
	@rm initrd/linuxrc
	@mkdir initrd/dev initrd/proc initrd/sys
	@echo '#!/bin/sh' > initrd/init
	@echo 'dmesg -n 1' >> initrd/init
	@echo 'mount -t devtmpfs none /dev' >> initrd/init
	@echo 'mount -t proc none /proc' >> initrd/init
	@echo 'mount -t sysfs none /sys' >> initrd/init
	@echo 'setsid cttyhack /bin/sh' >> initrd/init
	@chmod +x initrd/init
	@cd initrd && find . | cpio -R root:root -H newc -o | gzip > ../rootfs.gz
	@echo initrd: creation is completed.

clean:
	rm -rf busybox* kernel* linux* live* *.iso syslinux* initrd* rootfs.gz

include Makefile.busybox
include Makefile.linux
include Makefile.syslinux