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all: initramfs.img

initramfs.img: gen_init_cpio dropbear_rsa_host_key dropbear_ecdsa_host_key
	./make

gen_init_cpio: gen_init_cpio.c
	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) gen_init_cpio.c -o $@

dropbear_rsa_host_key:
	dropbearkey -t rsa -f $@

dropbear_ecdsa_host_key:
	dropbearkey -t ecdsa -f $@

install: initramfs.img
	rm -f /boot/initramfs.img.old /boot/initramfs.img.new
	cp initramfs.img /boot/initramfs.img.new || rm -f /boot/initramfs.img.new
	if [ -e /boot/initramfs.img ]; then mv /boot/initramfs.img /boot/initramfs.img.old; fi
	mv /boot/initramfs.img.new /boot/initramfs.img

clean:
	rm -f initramfs.img initramfs.d gen_init_cpio

-include initramfs.d

.PHONY: all install clean
MAKEFLAGS += -r # slightly faster