.PHONY: all clean
CC := musl-gcc
CPU := $(shell nproc)

all: ./initrd

clean:
	rm -rf ./root ./initrd ./oksh ./nashville

./root/bin/nv:
	if [ ! -e "./nashville" ]; then svn co http://sw.nishi.boats/sw/~nishi/nashville/trunk nashville ; fi
	mkdir -p ./root/bin
	cd nashville && make STATIC=YES CC=$(CC) && cp bin/nashville ../$@

./root/bin/sh:
	if [ ! -e "./oksh" ]; then git clone https://github.com/ibara/oksh ; fi
	mkdir -p ./root/bin
	cd oksh && CC=$(CC) ./configure --enable-static && make -j$(CPU) && cp oksh ../$@

./initrd:	./root/bin/nv \
		./root/bin/sh \
		./dist/inittab \
		./dist/init \
		./dist/login \
		./dist/passwd \
		./dist/shadow \
		./dist/group \
		./dist/mount \
		./dist/startup
	mkdir -p ./root/sbin
	mkdir -p ./root/etc
	mkdir -p ./root/root
	mkdir -p ./root/dev
	mkdir -p ./root/sys
	mkdir -p ./root/tmp
	mkdir -p ./root/run
	mkdir -p ./root/proc
	cp ./dist/inittab ./root/etc/
	cp ./dist/passwd ./root/etc/
	cp ./dist/shadow ./root/etc/
	cp ./dist/group ./root/etc/
	cp ./dist/login ./root/bin/
	chmod +x ./root/bin/login
	cp ./dist/mount ./root/sbin/
	chmod +x ./root/sbin/mount
	cp ./dist/init ./root/sbin/
	chmod +x ./root/sbin/init
	cp ./dist/startup ./root/
	chmod +x ./root/startup
	-strip `find root`
	cd ./root ; \
		ln -sf /bin/nv ./sbin/cinit ; \
		ln -sf /bin/nv ./bin/cgetty ; \
		ln -sf /bin/nv ./bin/clogin ; \
		ln -sf /bin/nv ./sbin/cmount	
	cd root && find . | cpio -o -H newc -R 0:0 > ../initrd