# abbreviations
define EXTRAVERSION
$(shell $(CAT) EXTRAVERSION)
endef
define COMPLETE_VERSION
$(shell $(CAT) COMPLETE_VERSION)
endef

HOST                ?= $(HOSTNAME)
KERNEL_BASE         ?= lx-$(HOST)
BOOT_LABEL          ?= lx-$(KERNEL_VERSION)-$(RPM_RELEASE)
KERNEL_PKG_SUFFIX   ?= .tar.gz
CUSTOMER            ?= jannet
KERNEL_DLOAD_DIR    ?= /home/samba/dat/exe/linux/os
KERNEL_PKG          ?= $(KERNEL_DLOAD_DIR)/$(shell echo $(KERNEL_VERSION) | $(SED) 's/\([0-9]\.[0-9]*\)\..*/\1/')/linux-$(shell echo $(KERNEL_VERSION) | $(SED) 's/\(2\.6\.[0-9]+\)-..*/\1/')$(KERNEL_PKG_SUFFIX)
UPLOAD_HOST         ?= ftp.jannet.de
UPLOAD_PATH         ?= /home/ftp/dat/pub/packages/$(CUSTOMER)/$(KERNEL_BASE)
UPLOAD_OWNER        ?= $(shell whoami)

KERNEL_MAJOR         = $(shell echo $(KERNEL_VERSION) | cut -d\. -f1)
KERNEL_MINOR         = $(shell echo $(KERNEL_VERSION) | cut -d\. -f2)
KERNEL_RELEASE       = $(shell echo $(KERNEL_VERSION) | cut -d\. -f3)
KERNEL_PKG_BASE      = $(KERNEL_DLOAD_DIR)/$(KERNEL_MAJOR).$(KERNEL_MINOR)/linux-$(KERNEL_VERSION).tar
ifneq ($(wildcard $(KERNEL_PKG_BASE).*),)
	ifneq ($(wildcard $(KERNEL_PKG_BASE).gz),)
	KERNEL_PKG           = $(KERNEL_PKG_BASE).gz
	KERNEL_SRC_DIR       = $(shell tar -tzf $(KERNEL_DIR)/$(KERNEL_PKG) | grep -v pax_global_header | head -1)
	endif
	ifneq ($(wildcard $(KERNEL_PKG_BASE).bz2),)
	KERNEL_PKG           = $(KERNEL_PKG_BASE).bz2
	KERNEL_SRC_DIR       = $(shell tar -tjf $(KERNEL_DIR)/$(KERNEL_PKG) | grep -v pax_global_header | head -1)
	endif
else
	KERNEL_PKG           = $(KERNEL_PKG_BASE).bz2
	KERNEL_SRC_DIR       = linux-$(KERNEL_VERSION)
endif
#HOST                = $(shell cd ../..; pwd | xargs basename)
WD                  := $(shell pwd)
TAG                  = $(shell echo V_$(KERNEL_VERSION)_$(RPM_RELEASE) | $(SED) 's/\./_/g')
ARCH                 = $(shell $(RPMBUILD) --showrc | $(SED) '/build arch / !d; s/.*build arch *://; s/ //g')

RPMBUILD             = $(shell which rpmbuild 2>/dev/null)
ifeq ($(RPMBUILD),)
RPMBUILD             = $(shell which rpm 2>/dev/null)
endif

#ifeq ($(wildcard RELEASE-$(KERNEL_VERSION)),)
#RPM_RELEASE      := $(shell make newrelease; exit 1)
#else
#RPM_RELEASE_NUM  := $(strip $(shell grep Id: RELEASE-$(KERNEL_VERSION) | $(SED) "s/.*RELEASE-$(KERNEL_VERSION),v[ 	]*[0-9]*\.\([0-9]*\)[^0-9]*.*/\1/"))
#ifeq ($(UNAME_SUFFIX),)
#RPM_RELEASE       = $(RPM_RELEASE_NUM)
#else
#RPM_RELEASE       = $(UNAME_SUFFIX)$(RPM_RELEASE_NUM)
#endif
#endif
BASE                 = $(KERNEL_BASE)-$(COMPLETE_VERSION)
TMP_INSTALL          = $(KERNEL_BASE)-$(COMPLETE_VERSION)
BASE_RUN             = $(KERNEL_BASE)-run-$(COMPLETE_VERSION)
BASE_DEVEL           = $(KERNEL_BASE)-devel-$(COMPLETE_VERSION)

ifeq ($(BOOT_LABEL),)
BOOT_LABEL = lx-$(COMPLETE_VERSION)
endif

KERNEL_TGZ           = $(notdir $(KERNEL_PKG))
F_SPEC               = $(BASE).spec
F_TGZ                = $(BASE).tar.gz
F_SPM                = $(BASE).src.rpm
F_RPM_RUN            = $(BASE_RUN).$(ARCH).rpm
F_RPM_DEVEL          = $(BASE_DEVEL).$(ARCH).rpm
F_RPMS               = $(F_RPM_RUN) $(F_RPM_DEVEL)
F_BOOTFILES          = $(addsuffix -$(COMPLETE_VERSION),$(addprefix $(TMP_INSTALL)/boot/,vmlinuz config System.map))
F_CURRENT            = $(addprefix CURRENT_, SRC RPM_SRC RPM_RUN_I386 RPM_DEVEL_I386)
F_ULDONE             = $(addsuffix .uldone,$(F_RPMS) $(F_TGZ) $(F_SPM) current)
# note that order matters for F_ULDONE and F_RPMS (remote directory attributes)
KERNEL_INSTALL_PREFIX= $(shell pwd)/$(TMP_INSTALL)

BUILD = sh $(MODDIR)/devutil/jcs/build_linux.sh \
		-c config-$(KERNEL_VERSION) \
		-t $(HOST) \
		-b $(WD) \
		-a i386 \
		-s $(KERNEL_SRC_DIR) \
		-i $(TMP_INSTALL)
MKSPEC := $(MODDIR)/devutil/jcs/mkspec-linux.sh

# exports
export KERNEL_VERSION
export KERNEL_INSTALL_PREFIX

# first target
all: rpm

# file rules
%.lxdone: config-$(KERNEL_VERSION) $(LOCAL_PRE_BUILD) linux-$(KERNEL_VERSION)/Makefile
	$(BUILD) $(basename $@)
	touch $@

$(TMP_INSTALL)/$(F_SPEC): linux-$(KERNEL_VERSION)/Makefile $(MKSPEC) Makefile
	sh $(MKSPEC) -d $(TMP_INSTALL) -b $(KERNEL_BASE) -v $(shell echo $(COMPLETE_VERSION) | $(SED) 's/-[0-9][0-9]*.*//') -r $(RPM_RELEASE) -a $(ARCH) -l $(BOOT_LABEL) > $@

$(TMP_INSTALL)/boot/%-$(KERNEL_VERSION)-$(RPM_RELEASE): build.lxdone $(LOCAL_AFTER_KERNEL_BUILD)
	@echo -n

.PRECIOUS: $(TMP_INSTALL)/boot/%-$(KERNEL_VERSION)

$(TMP_INSTALL)/boot/%-$(KERNEL_VERSION)-$(RPM_RELEASE): $(TMP_INSTALL)/boot/%-$(KERNEL_VERSION)
	cp $< $@

$(F_TGZ): Makefile build.lxdone $(F_BOOTFILES) $(TMP_INSTALL)/$(F_SPEC) 
	tar -czf $@ \
		$(F_BOOTFILES)  \
		$(addprefix $(TMP_INSTALL)/, \
			lib		\
			$(F_SPEC)	\
	)

%.src.rpm: %.tar.gz
	$(RPMBUILD) -ts $<
	cp /usr/src/packages/SRPMS/$@ .

rpm.done: $(F_SPM)
	$(RPMBUILD) --rebuild $(F_SPM)
	touch $@

%.$(ARCH).rpm: rpm.done
	cp /usr/src/packages/RPMS/$(ARCH)/$@ .

CURRENT_RPM_RUN_I386: $(F_RPM_RUN)
	echo $(UPLOAD_PATH)/rpm/run/$(F_RPM_RUN) > $@

CURRENT_RPM_DEVEL_I386: $(F_RPM_RUN)
	echo $(UPLOAD_PATH)/rpm/devel/$(F_RPM_DEVEL) > $@

CURRENT_RPM_SRC: $(F_RPM_RUN)
	echo $(UPLOAD_PATH)/rpm/src/$(F_RPM_SRC) > $@

CURRENT_SRC: $(F_RPM_RUN)
	echo $(UPLOAD_PATH)/src/$(F_TGZ) > $@

update.done:
	cvs update -dP
	make rpm
	touch $@

upload.done: $(F_RPMS)
	touch $@

%.tar.gz.uldone: %.tar.gz
	upload.sh $< rsync_ssh://$(UPLOAD_HOST):$(UPLOAD_PATH)/src/$<:640:750:$(UPLOAD_OWNER).$(CUSTOMER)
	touch $@

%.src.rpm.uldone: %.src.rpm
	upload.sh $< rsync_ssh://$(UPLOAD_HOST):$(UPLOAD_PATH)/rpm/src/$<:640:750:$(UPLOAD_OWNER).$(CUSTOMER)
	touch $@

%.rpm.uldone: %.rpm
	upload.sh $< rsync_ssh://$(UPLOAD_HOST):$(UPLOAD_PATH)/rpm/$(shell echo $@ | $(SED) 's/.*\(run\|devel\).*/\1/')/$<:640:750:$(UPLOAD_OWNER).$(CUSTOMER)
	touch $@

current.uldone: $(F_CURRENT)
	upload.sh $^ rsync_ssh://$(UPLOAD_HOST):$(UPLOAD_PATH)/:640:750:$(UPLOAD_OWNER).$(CUSTOMER)
	touch $@

tag.done:
	cvs tag $(TAG)
	touch $@

copy-run.done: $(F_RPM_RUN)
	scp $< root@$(HOST):/root/rpm/
	touch $@
copy-devel.done: $(F_RPM_DEVEL)
	scp $< root@$(HOST):/root/rpm/
	touch $@

ping:
	ping $(HOST)
ssh:
	$(CVS_RSH) -l root $(HOST)
	
# user targets
unpack: unpack.done
build: build.lxdone 
driver: driver.done
tgz: $(F_TGZ)
spm: $(F_SPM)
rpm: $(F_RPMS)
upload: update.done rpm $(F_ULDONE)
tag: tag.done
install: build.lxdone install.lxdone
copy-run: copy-run.done
copy-devel: copy-devel.done
copy: copy-run copy-devel
patch: patches.done
shutdown:
	$(CVS_RSH) -l root $(HOST) "shutdown -h now"
reboot:
	 -l root $(HOST) "reboot"
update-rpm: copy
	$(CVS_RSH) -l root $(HOST) rpm -U $(addprefix rpm/,$(F_RPMS))
erase-rpm:
	$(CVS_RSH) -l root $(HOST) rpm -e $(KERNEL_BASE)-run $(KERNEL_BASE)-devel
dist: clean
	cd ..;\
	tar -czf kernel.tar.gz `find kernel -maxdepth 1 -type f | grep -ve "setup\|trash\|CVS"`
	mv ../kernel.tar.gz .
clean:
	rm -rf $(KERNEL_BASE)-*
	rm -rf install/* reiser.patch *~ *.done *.lxdone *.uldone *.patch *.diff *.rpm *.tar.gz *.tar \
		$(SCOPE_DRIVER_BASE)
	rm -rf linux linux-$(KERNEL_VERSION) CURRENT_* pax_global_header
	rm -f toplevel-makefile EXTRAVERSION COMPLETE_VERSION

distclean: clean