#!/usr/bin/make -f
#

RELEASE := $(shell dpkg-parsechangelog | sed -ne 's/^Version: 1:\(.*\)/\1/p' | sed 's/-10/.10-/')
REVISION := $(shell echo "$(RELEASE)" | sed 's/.*\./\./')
EXTRAVERSION := EXTRAVERSION=$(REVISION)

PACKAGE := kernel-bfs
FLASHER_PACKAGE := $(PACKAGE)-flasher
SOURCE_PACKAGE := $(PACKAGE)-source
KERNEL_PACKAGE := $(PACKAGE)
BOOTIMG_PACKAGE := $(PACKAGE)-bootimg
MODULES_PACKAGE := $(PACKAGE)-modules
HEADERS_PACKAGE := $(PACKAGE)-headers
KBUILD_PACKAGE := $(PACKAGE)-kbuild
DEBUG_PACKAGE := $(PACKAGE)-debug
DEBUG_MODULES_PACKAGE := $(PACKAGE)-modules-debug
LIBC_PACKAGE := linux-$(PACKAGE)-headers

MULTIBOOTDIR := etc/multiboot.d
MULTIBOOTFILE := $(MULTIBOOTDIR)/01-Maemo-$(PACKAGE)-$(RELEASE).item

BUILDTMP := $(CURDIR)/debian/build
KSRC := $(BUILDTMP)/$(PACKAGE)

DEFCONFIG := rx51-bfs_defconfig
ARCH = $(shell dpkg-architecture -qDEB_HOST_ARCH_CPU)
INCLUDE_HEADERS_ARCH = asm-$(ARCH) config linux
INCLUDE_HEADERS = asm-$(ARCH) linux acpi asm-generic crypto drm Kbuild keys math-emu media mtd net pcmcia rdma rxrpc scsi sound video xen
RM_SCRIPTS = bloat-o-meter show_delta
DEBUG_MODULES = oprofile.ko

ifneq (,$(findstring parallel,$(DEB_BUILD_OPTIONS)))
    PARALLEL_JOBS := $(shell echo $(DEB_BUILD_OPTIONS) | \
        sed -e 's/.*parallel=\([0-9]\+\).*/\1/')
    ifeq ($(DEB_BUILD_OPTIONS),$(PARALLEL_JOBS))
        PARALLEL_JOBS := $(shell if [ -f /proc/cpuinfo ]; \
            then echo `cat /proc/cpuinfo | grep 'processor' | wc -l`; \
            else echo 1; fi)
    endif
    NJOBS := -j$(PARALLEL_JOBS)
endif

get-orig-source:
	wget http://repository.maemo.org/pool/maemo5.0/free/k/kernel/kernel_2.6.28.orig.tar.gz -O kernel-power_2.6.28.orig.tar.gz

source-stamp:
	dh_testdir
	mkdir -p $(KSRC)
	tar cf - `echo * | sed -e 's/ debian//g;s/\.deb//g;s/\.gz//g;s/fiasco//g'` 2>/dev/null | ( cd $(KSRC); umask 000; tar xspf - )
	cd $(KSRC) && ( QUILT_PATCHES=$(CURDIR)/debian/patches quilt push -a -q || test $$? = 2 )
	cp $(CURDIR)/debian/$(DEFCONFIG) $(KSRC)/arch/arm/configs/
	cd $(BUILDTMP) && tar --exclude=".pc" --bzip2 -cf $(SOURCE_PACKAGE)-$(RELEASE).tar.bz2 $(PACKAGE)
	touch $@

configure-stamp: source-stamp
	$(MAKE) -C $(KSRC) $(NJOBS) $(EXTRAVERSION) $(DEFCONFIG)
	touch $@

kernel-stamp: configure-stamp
	$(MAKE) -C $(KSRC) $(NJOBS) $(EXTRAVERSION) zImage
	mkimage  -A arm -O linux -T kernel -C none -a 80008000 -e 80008000 -n kernel-bfs -d $(KSRC)/arch/arm/boot/zImage $(KSRC)/arch/arm/boot/uImage
	cp $(KSRC)/arch/arm/boot/uImage $(CURDIR)/../uImage
	touch $@

modules-stamp: configure-stamp
	$(MAKE) -C $(KSRC) $(NJOBS) $(EXTRAVERSION) modules
	touch $@

headers: kernel-stamp modules-stamp

clean:
	dh_testdir
	dh_testroot
	rm -rf $(BUILDTMP)
	rm -f debian/files debian/$(FLASHER_PACKAGE).postinst debian/$(MODULES_PACKAGE).postinst debian/$(MODULES_PACKAGE).postrm
	rm -f source-stamp configure-stamp kernel-stamp modules-stamp
	dh_clean

install-kernel:
	dh_testdir
	dh_testroot
	mkdir -p $(CURDIR)/debian/$(KERNEL_PACKAGE)/boot
	fiasco-gen -o $(CURDIR)/debian/$(KERNEL_PACKAGE)/boot/zImage-$(RELEASE).fiasco -g -k $(KSRC)/arch/arm/boot/zImage -v $(RELEASE)
	chmod 644 $(CURDIR)/debian/$(KERNEL_PACKAGE)/boot/zImage-$(RELEASE).fiasco

install-bootimg:
	dh_testdir
	dh_testroot
	mkdir -p $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/boot
	mkdir -p $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/$(MULTIBOOTDIR)
	install -m644 $(KSRC)/arch/arm/boot/zImage $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/boot/zImage-$(RELEASE)
	echo "ITEM_NAME=\"Maemo $(PACKAGE) $(RELEASE)\"" > $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/$(MULTIBOOTFILE)
	echo "ITEM_KERNEL=\"$(RELEASE)\"" >> $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/$(MULTIBOOTFILE)
	echo "ITEM_MODULES=\"ext3\"" >> $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/$(MULTIBOOTFILE)
	chmod 644 $(CURDIR)/debian/$(BOOTIMG_PACKAGE)/$(MULTIBOOTFILE)

install-flasher:
	dh_testdir
	dh_testroot
	mkdir -p $(CURDIR)/debian/$(FLASHER_PACKAGE)/etc/sudoers.d
	mkdir -p $(CURDIR)/debian/$(FLASHER_PACKAGE)/usr/sbin
	mkdir -p $(CURDIR)/debian/$(FLASHER_PACKAGE)/usr/share/applications/hildon
	install -m644 $(CURDIR)/debian/kernel-bfs-flasher.sudoers $(CURDIR)/debian/$(FLASHER_PACKAGE)/etc/sudoers.d
	install -m755 $(CURDIR)/debian/kernel-bfs-uninstall $(CURDIR)/debian/$(FLASHER_PACKAGE)/usr/sbin
	install -m644 $(CURDIR)/debian/kernel-bfs-uninstall.desktop $(CURDIR)/debian/$(FLASHER_PACKAGE)/usr/share/applications/hildon

install-debug: install-modules
	mkdir -p $(CURDIR)/debian/$(DEBUG_PACKAGE)/usr/lib/debug/lib/modules/$(RELEASE)
	mkdir -p $(CURDIR)/debian/$(DEBUG_PACKAGE)/lib/modules/$(RELEASE)
	install -m644 $(KSRC)/vmlinux $(CURDIR)/debian/$(DEBUG_PACKAGE)/usr/lib/debug/vmlinux-$(RELEASE)
	for f in $$(find $(CURDIR)/debian/$(MODULES_PACKAGE) -name "*.ko"); do \
		objcopy --only-keep-debug $$f $(CURDIR)/debian/$(DEBUG_PACKAGE)/usr/lib/debug/lib/modules/$(RELEASE)/$$(basename $$f); \
		strip --remove-section=.comment --remove-section=.note --strip-unneeded  $(CURDIR)/debian/$(MODULES_PACKAGE)/lib/modules/$(RELEASE)/$$(basename $$f); \
		objcopy --add-gnu-debuglink $(CURDIR)/debian/$(DEBUG_PACKAGE)/usr/lib/debug/lib/modules/$(RELEASE)/$$(basename $$f) $(CURDIR)/debian/$(MODULES_PACKAGE)/lib/modules/$(RELEASE)/$$(basename $$f); \
	done

install-modules-debug: install-debug
	mkdir -p $(CURDIR)/debian/$(DEBUG_MODULES_PACKAGE)/lib/modules/$(RELEASE)
	-for f in $(DEBUG_MODULES); do \
		mv $(CURDIR)/debian/$(MODULES_PACKAGE)/lib/modules/$(RELEASE)/$$f  \
		   $(CURDIR)/debian/$(DEBUG_MODULES_PACKAGE)/lib/modules/$(RELEASE)/$$f; \
	done

install-modules:
	dh_testdir
	dh_testroot
	mkdir -p $(CURDIR)/debian/$(MODULES_PACKAGE)/lib/modules/$(RELEASE)
	mkdir -p $(CURDIR)/debian/$(MODULES_PACKAGE)/etc/modprobe.d
	for f in $$(find $(KSRC) -name "*.ko"); do \
		install -c -m644 $$f $(CURDIR)/debian/$(MODULES_PACKAGE)/lib/modules/$(RELEASE)/$$(basename $$f); \
		strip --remove-section=.comment --remove-section=.note --strip-unneeded  $(CURDIR)/debian/$(MODULES_PACKAGE)/lib/modules/$(RELEASE)/$$(basename $$f); \
	done
	install -m644 $(CURDIR)/debian/kernel-bfs.blacklist $(CURDIR)/debian/$(MODULES_PACKAGE)/etc/modprobe.d

install-headers:
	dh_testdir
	dh_testroot
	mkdir -p $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/
	install -p -m644 $(KSRC)/.config  $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/
	install -p -m644 $(KSRC)/Makefile $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/
	install -p -m644 $(KSRC)/Module.symvers $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/
	cd $(KSRC) && install -p -m 644 -D include/config/auto.conf \
		$(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/include/config/auto.conf
	cd $(KSRC) && install -p -m 644 -D include/config/kernel.release \
		$(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/include/config/kernel.release
	cd $(KSRC) && \
		find arch/$(ARCH) $(foreach dir,$(INCLUDE_HEADERS),include/$(dir)) -name '*.h' \
			-exec install -D -m644 {} $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/{} \;
	cd $(KSRC) && \
		find $(foreach dir,$(INCLUDE_HEADERS_ARCH),include/$(dir)) -name '*.h' \
			-exec install -D -m644 {} $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/{} \;
	cd $(KSRC) && \
		find ./ -path "./debian" -prune -o -path "./.pc" -prune -o \( -name Makefile -or -name Kbuild -or -name Kconfig\* \) \
			-exec install -D -m644 {} $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/{} \;
	ln -sf asm-$(ARCH) $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/include/asm
	rm -rf $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/scripts
	ln -sf ../$(KBUILD_PACKAGE)/scripts $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)
	cp $(KSRC)/arch/$(ARCH)/kernel/asm-offsets.s $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(HEADERS_PACKAGE)/arch/$(ARCH)/kernel
#install /lib/modules symlink
	mkdir -p $(CURDIR)/debian/$(HEADERS_PACKAGE)/lib/modules/$(RELEASE)
	ln -sf /usr/src/$(HEADERS_PACKAGE) $(CURDIR)/debian/$(HEADERS_PACKAGE)/lib/modules/$(RELEASE)/build
#install kbuild
	mkdir -p $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(KBUILD_PACKAGE)
	cp -a $(KSRC)/scripts $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(KBUILD_PACKAGE)
#kbuild fixes
	cd $(CURDIR)/debian/$(HEADERS_PACKAGE)/usr/src/$(KBUILD_PACKAGE)/scripts && rm -f $(RM_SCRIPTS) && chmod a-x mkcompile_h
	#find $(CURDIR)/debian/$(HEADERS_PACKAGE) -name ".gitignore" -delete

install-libc-headers: source-stamp
	dh_testdir
	dh_testroot
	$(MAKE) -C $(KSRC) headers_check ARCH=$(ARCH)
	$(MAKE) -C $(KSRC) headers_install ARCH=$(ARCH) INSTALL_HDR_PATH=$(CURDIR)/debian/$(LIBC_PACKAGE)/usr

install-indep:
	dh_testdir
	dh_testroot
	mkdir -p debian/$(SOURCE_PACKAGE)/usr/src
	install -m 644 $(BUILDTMP)/$(SOURCE_PACKAGE)-$(RELEASE).tar.bz2 debian/$(SOURCE_PACKAGE)/usr/src

install-arch: build-arch install-kernel install-bootimg install-flasher install-modules install-debug install-modules-debug install-headers install-libc-headers

ifeq ($(ARCH),arm)
build-arch: kernel-stamp modules-stamp headers
else
build-arch:
endif

build-indep: source-stamp

build: build-arch build-indep

binary-indep: install-indep
	dh_testdir
	dh_testroot
	dh_installchangelogs -i
	dh_installdocs -i
	dh_installdeb -i
	dh_gencontrol -i
	dh_md5sums -i
	dh_builddeb -i

ifeq ($(ARCH),arm)
binary-arch: build-arch install-arch
else
binary-arch: install-libc-headers
endif
	sed \
		-e 's,@RELEASE@,$(RELEASE),g' \
		< $(CURDIR)/debian/$(FLASHER_PACKAGE).postinst.in \
		> $(CURDIR)/debian/$(FLASHER_PACKAGE).postinst
	sed \
		-e 's,@RELEASE@,$(RELEASE),g' \
		< $(CURDIR)/debian/$(MODULES_PACKAGE).postinst.in \
		> $(CURDIR)/debian/$(MODULES_PACKAGE).postinst
	sed \
		-e 's,@RELEASE@,$(RELEASE),g' \
		< $(CURDIR)/debian/$(MODULES_PACKAGE).postrm.in \
		> $(CURDIR)/debian/$(MODULES_PACKAGE).postrm
	dh_testdir
	dh_testroot
	dh_installchangelogs -s
	dh_installdocs -s
ifeq ($(ARCH),arm)
	dh_strip -p$(HEADERS_PACKAGE)
endif
	dh_compress -s
	dh_fixperms -s --exclude /usr/src/kernel-headers
	dh_installdeb -s
	dh_shlibdeps -s
	dh_gencontrol -s
	dh_md5sums -s
	dh_builddeb -s
binary: binary-arch binary-indep
.PHONY: build clean binary-indep binary-arch binary install