path := base
name := kernel
suffix := gz
version_of = src/linux
latest_version = 3.12.0
#latest_version = $(shell $(MAKE) -C src/linux kernelversion)
version_base = $(word 1,$(subst ., ,$(version))).$(word 2,$(subst ., ,$(version)))
version_suffix = $(shell svn info src/linux.config | grep Rev: | tail -n1 | sed "s/.*: //")
image = zImage
src_url = https://github.com/raspberrypi/linux/tarball/rpi-$(version_base).y
src_suffix = tgz
src_files := linux aufs-standalone module-init-tools
deps := gcc mercurial patch libncurses5-dev git lzma

include ../Makefile.default
include ../Makefile.tools


all: $(name).$(suffix)

clean: _clean
	rm -rf lib
	rm -f include
	rm -rf src/linux.$(src_suffix)
	rm -rf src/linux-$(version)
	rm -rf src/aufs
	rm -rf src/aufs-$(version_base)
	rm -rf src/aufs-standalone.tgz
	rm -f $(name).$(suffix)

$(name).$(suffix): src/linux/arch/$(ARCH)/boot/$(image) lib include
	cp -up src/linux/arch/$(ARCH)/boot/$(image) $(modulname)
	ln -fs $(modulname) $@


src/linux/arch/$(ARCH)/boot/$(image): src/linux
	echo "$(indent)Build Kernel..."
	$(MAKE) -C src/linux
	touch src/linux-$(version) -r src/linux/.config

lib: src/linux
	echo "$(indent)Build Kernel Modules..."
	rm -rf lib
	$(MAKE) -C src/linux modules
	INSTALL_MOD_PATH=$$(pwd) $(MAKE) -C src/linux modules_install
	$(depmod) -b . $$(ls lib/modules)
	touch src/linux-$(version) -r src/linux/.config

include: src/linux
	$(MAKE) -C src/linux headers_install
	ln -fns src/linux/usr/include include
	touch src/linux-$(version) -r src/linux/.config


src/linux: src/linux-$(version) src/linux-$(version)/.config
	ln -fns linux-$(version) $@

src/linux-$(version): src/linux.$(src_suffix) src/aufs
	rm -rf $@
	tar xf src/linux.$(src_suffix) -C src
	mv src/raspberrypi-linux-* $@
	$(MAKE) patch src_path=$@ src_name=aufs/aufs3-kbuild
	$(MAKE) patch src_path=$@ src_name=aufs/aufs3-base
	$(MAKE) patch src_path=$@ src_name=aufs/aufs3-mmap
	cp -r src/aufs/{Documentation,fs} $@
	cp -r src/aufs/include/uapi/linux/aufs_type.h $@/include/uapi/linux

src/linux.$(src_suffix):
	$(MAKE) -f ../Makefile.getfile file=$@ url="$(src_url)"

src/linux-$(version)/.config: src/linux.config
	cp src/linux.config $@; \
	sed "s/CONFIG_LOCALVERSION=\".*\"/CONFIG_LOCALVERSION=\"$(version_suffix)\"/" -i $@
	cd $(@D); yes "" | $(MAKE) oldconfig


src/aufs: src/aufs-$(version_base)
	ln -fns $(^F) $@

src/aufs-$(version_base): src/aufs-standalone.tgz
	rm -rf $@*
	mkdir -p $@-src
	tar xf $^ -C $@-src
	mv $@-src/* $@
	rm -r $@-src
	touch $@
	cd $@; patch -p1 -i ../aufs_create.patch
	cd $@; patch -p1 -i ../aufs_cpup.patch
	sed 's/#define AUFS_VERSION.*/#define AUFS_VERSION   "3.x-rcN"/' -i $@/include/uapi/linux/aufs_type.h

src/aufs-standalone.tgz:
	$(MAKE) -f ../Makefile.getfile version=$(version_base) file=$@ rule=src/aufs-HEAD

src/aufs-HEAD:
	git clone git://aufs.git.sourceforge.net/gitroot/aufs/aufs3-standalone.git $@
#	cd $@; git checkout origin/aufs3.x-rcN
	cd $@; git checkout 8e9c589e2184bf5622a3abd4c7654636c9f08f97
	tar -caf $(file) -C $(@D) $(@F)
	rm -rf $@