# 
# initramfs/Makefile
#

TOPDIR = $(shell pwd)

include $(TOPDIR)/../toolchain/vars.mk

TARGET = arm-crux-linux-gnueabi
DEVICE = versatile

WORK = $(TOPDIR)/work
CLFS = $(TOPDIR)/../toolchain/clfs
CROSSTOOLS = $(TOPDIR)/../toolchain/crosstools


KERNEL_PATH = $(PWD)/../kernel/$(DEVICE)
KERNEL_VERSION = $(shell grep '^KERNEL_VERSION = ' $(KERNEL_PATH)/Makefile | sed 's|KERNEL_VERSION = ||')

BUSYBOX_VERSION  = 1.20.2
BUSYBOX_SOURCE   = http://busybox.net/downloads/busybox-$(BUSYBOX_VERSION).tar.bz2

DIALOG_VERSION = 1.1-20120215
DIALOG_SOURCE = ftp://dickey.his.com/dialog/dialog-$(DIALOG_VERSION).tgz

NCURSES_HEADER = $(CLFS)/usr/include/ncurses.h

.PHONY: all check-root busybox dialog initramfs clean distclean

all: busybox dialog initramfs

clean: busybox-clean dialog-clean initramfs-clean

dist-clean: busybox-distclean dialog-distclean gen_init_cpio-distclean initramfs-distclean

check-root:
	@if [ "$$UID" != "0" ]; then \
		echo "You need to be root to do this."; \
		echo "Now you should run 'make initramfs' as root to finish compilation or 'sudo make initramfs'."; \
		exit 1; \
	fi

$(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2:
	wget -P $(WORK) -c http://busybox.net/downloads/busybox-$(BUSYBOX_VERSION).tar.bz2

$(WORK)/busybox-$(BUSYBOX_VERSION): $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2 $(PWD)/busybox-$(BUSYBOX_VERSION).config
	tar -C $(WORK) -xvjf $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2
	cp -v $(PWD)/busybox-$(BUSYBOX_VERSION).config $(WORK)/busybox-$(BUSYBOX_VERSION)/.config
	touch $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2

$(WORK)/busybox-$(BUSYBOX_VERSION)/_install/bin/busybox: $(WORK)/busybox-$(BUSYBOX_VERSION)
	export PATH=$(CROSSTOOLS)/bin:$$PATH &&  \
	export LD_LIBRARY_PATH=$(CROSSTOOLS)/lib:$$LD_LIBRARY_PATH && \
	make -C $(WORK)/busybox-$(BUSYBOX_VERSION) ARCH=arm CROSS_COMPILE=$(TARGET)- install && \
	install -D -m 0755 $(WORK)/busybox-$(BUSYBOX_VERSION)/examples/udhcp/simple.script $(WORK)/busybox-$(BUSYBOX_VERSION)/_install/usr/share/udhcpc/default.script && \
	$(TARGET)-strip $(WORK)/busybox-$(BUSYBOX_VERSION)/_install/bin/busybox && \
	touch $(WORK)/busybox-$(BUSYBOX_VERSION)/_install/bin/busybox

busybox: $(WORK)/busybox-$(BUSYBOX_VERSION)/_install/bin/busybox

busybox-clean:
	rm -vrf $(WORK)/busybox-$(BUSYBOX_VERSION)

busybox-distclean: busybox-clean
	rm -vf $(WORK)/busybox-$(BUSYBOX_VERSION).tar.bz2

$(WORK)/dialog-$(DIALOG_VERSION).tgz:
	wget -P $(WORK) -c $(DIALOG_SOURCE)

$(WORK)/dialog-$(DIALOG_VERSION): $(WORK)/dialog-$(DIALOG_VERSION).tgz
	tar -C $(WORK) -xvzf $(WORK)/dialog-$(DIALOG_VERSION).tgz
	touch $(WORK)/dialog-$(DIALOG_VERSION)

$(WORK)/dialog-$(DIALOG_VERSION)/_install/usr/bin/dialog: $(WORK)/dialog-$(DIALOG_VERSION)
	export PATH=$(CROSSTOOLS)/bin:$$PATH && \
	export LD_LIBRARY_PATH=$(CROSSTOOLS)/lib:$$LD_LIBRARY_PATH && \
        cd $(WORK)/dialog-$(DIALOG_VERSION) && \
                ./configure --build=$(BUILD) --host=$(TARGET) --prefix=/usr --with-ncursesw && \
                find -type f -name 'makefile' \
                -exec sed -e "s|-I/usr|-I$(CLFS)/usr|g" -e "s|-L/usr|-L$(CLFS)/usr|g" -i {} \; && \
                make CC="$(TARGET)-gcc -static" && \
                make DESTDIR=$(WORK)/dialog-$(DIALOG_VERSION)/_install install && \
                $(TARGET)-strip $(WORK)/dialog-$(DIALOG_VERSION)/_install/usr/bin/dialog && \
                touch $(WORK)/dialog-$(DIALOG_VERSION)/_install/usr/bin/dialog

dialog: $(NCURSES_HEADER) $(WORK)/dialog-$(DIALOG_VERSION)/_install/usr/bin/dialog

dialog-clean:
	rm -vrf $(WORK)/dialog-$(DIALOG_VERSION)

dialog-distclean: dialog-clean
	rm -vf $(WORK)/dialog-$(DIALOG_VERSION).tgz

$(WORK)/gen_init_cpio: $(WORK)/gen_init_cpio.c
	cd $(WORK) && \
		$(CC) $(CFLAGS) -Wall -o gen_init_cpio gen_init_cpio.c

gen_init_cpio: $(WORK)/gen_init_cpio

gen_init_cpio-clean:
	rm -rf $(WORK)/gen_init_cpio

gen_init_cpio-distclean: gen_init_cpio-clean

$(WORK)/initramfs.cpio.gz-$(KERNEL_VERSION): check-root busybox dialog $(TOPDIR)/filesystem $(WORK)/gen_init_cpio $(WORK)/initramfs.lst
	mkdir -p $(WORK)/mnt/{etc,lib,usr/share/terminfo}
	cp -dRv $(WORK)/busybox-$(BUSYBOX_VERSION)/_install/* $(WORK)/mnt
	install -v -m 0755 $(WORK)/dialog-$(DIALOG_VERSION)/_install/usr/bin/dialog $(WORK)/mnt/usr/bin
	cp -dRv $(CLFS)/lib/libnss_{files*,dns*} $(CLFS)/lib/libresolv* $(WORK)/mnt/lib
	cp -dRv $(CLFS)/usr/share/terminfo/v $(WORK)/mnt/usr/share/terminfo
	install -v -m 0644 $(TOPDIR)/filesystem/{fstab,inittab,profile,protocols,*.conf} $(WORK)/mnt/etc
	install -v -m 0755 $(TOPDIR)/filesystem/rc $(WORK)/mnt/etc
	install -v -m 0755 $(TOPDIR)/filesystem/{setup*,crux} $(WORK)/mnt/usr/bin
	/sbin/ldconfig -r $(WORK)/mnt
	cd $(WORK)/mnt && \
		sed -e "s/#KERNEL_VERSION#/$(KERNEL_VERSION)/g; s/#BUSYBOX_VERSION#/$(BUSYBOX_VERSION)/g" \
		$(WORK)/initramfs.lst > $(WORK)/initramfs.lst-sed && \
		$(WORK)/gen_init_cpio $(WORK)/initramfs.lst-sed | cpio -id && \
		find * | cpio -H newc -o > $(WORK)/initramfs.cpio && \
		gzip -v9 $(WORK)/initramfs.cpio
	mv $(WORK)/initramfs.cpio.gz{,-$(KERNEL_VERSION)}
	rm -rf $(WORK)/mnt

initramfs: $(WORK)/initramfs.cpio.gz-$(KERNEL_VERSION)

initramfs-clean:
	rm -rf $(WORK)/initramfs-$(KERNEL_VERSION) $(WORK)/mnt $(WORK)/initramfs.cpio.gz-$(KERNEL_VERSION)

initramfs-distclean: initramfs-clean

# End of file