include /usr/share/dpkg/pkg-info.mk

# also bump proxmox-kernel-meta if the default MAJ.MIN version changes!
KERNEL_MAJ=6
KERNEL_MIN=2
KERNEL_PATCHLEVEL=16
# increment KREL for every published package release!
# rebuild packages with new KREL and run 'make abiupdate'
KREL=9

KERNEL_MAJMIN=$(KERNEL_MAJ).$(KERNEL_MIN)
KERNEL_VER=$(KERNEL_MAJMIN).$(KERNEL_PATCHLEVEL)

EXTRAVERSION=-$(KREL)-pve
KVNAME=$(KERNEL_VER)$(EXTRAVERSION)
PACKAGE=proxmox-kernel-$(KVNAME)
HDRPACKAGE=proxmox-headers-$(KVNAME)

ARCH=$(shell dpkg-architecture -qDEB_BUILD_ARCH)

# amd64/x86_64/x86 share the arch subdirectory in the kernel, 'x86' so we need
# a mapping
KERNEL_ARCH=x86
ifneq ($(ARCH), amd64)
KERNEL_ARCH=$(ARCH)
endif

GITVERSION:=$(shell git rev-parse HEAD)

SKIPABI=0

BUILD_DIR=proxmox-kernel-$(KERNEL_VER)

KERNEL_SRC=ubuntu-kernel
KERNEL_SRC_SUBMODULE=submodules/$(KERNEL_SRC)
KERNEL_CFG_ORG=config-$(KERNEL_VER).org

ZFSONLINUX_SUBMODULE=submodules/zfsonlinux
ZFSDIR=pkg-zfs

MODULES=modules
MODULE_DIRS=$(ZFSDIR)

# exported to debian/rules via debian/rules.d/dirs.mk
DIRS=KERNEL_SRC ZFSDIR MODULES

DSC=proxmox-kernel-$(KERNEL_MAJMIN)_$(KERNEL_VER)-$(KREL).dsc
DST_DEB=$(PACKAGE)_$(KERNEL_VER)-$(KREL)_$(ARCH).deb
META_DEB=proxmox-kernel-$(KERNEL_MAJMIN)_$(KERNEL_VER)-$(KREL)_all.deb
HDR_DEB=$(HDRPACKAGE)_$(KERNEL_VER)-$(KREL)_$(ARCH).deb
META_HDR_DEB=proxmox-headers-$(KERNEL_MAJMIN)_$(KERNEL_VER)-$(KREL)_all.deb
USR_HDR_DEB=proxmox-kernel-libc-dev_$(KERNEL_VER)-$(KREL)_$(ARCH).deb
LINUX_TOOLS_DEB=linux-tools-$(KERNEL_MAJMIN)_$(KERNEL_VER)-$(KREL)_$(ARCH).deb
LINUX_TOOLS_DBG_DEB=linux-tools-$(KERNEL_MAJMIN)-dbgsym_$(KERNEL_VER)-$(KREL)_$(ARCH).deb

DEBS=$(DST_DEB) $(META_DEB) $(HDR_DEB) $(META_HDR_DEB) $(LINUX_TOOLS_DEB) $(LINUX_TOOLS_DBG_DEB) # $(USR_HDR_DEB)

all: deb
deb: $(DEBS)

$(META_DEB) $(META_HDR_DEB) $(LINUX_TOOLS_DEB) $(HDR_DEB): $(DST_DEB)
$(DST_DEB): $(BUILD_DIR).prepared
	cd $(BUILD_DIR); dpkg-buildpackage --jobs=auto -b -uc -us
	lintian $(DST_DEB)
	#lintian $(HDR_DEB)
	lintian $(LINUX_TOOLS_DEB)

dsc:
	$(MAKE) $(DSC)
	lintian $(DSC)

$(DSC): $(BUILD_DIR).prepared
	cd $(BUILD_DIR); dpkg-buildpackage -S -uc -us -d

sbuild: $(DSC)
	sbuild $(DSC)

$(BUILD_DIR).prepared: $(addsuffix .prepared,$(KERNEL_SRC) $(MODULES) debian)
	cp -a fwlist-previous $(BUILD_DIR)/
	cp -a abi-prev-* $(BUILD_DIR)/
	cp -a abi-blacklist $(BUILD_DIR)/
	touch $@

debian.prepared: debian
	rm -rf $(BUILD_DIR)/debian
	mkdir -p $(BUILD_DIR)
	cp -a debian $(BUILD_DIR)/debian
	echo "git clone git://git.proxmox.com/git/pve-kernel.git\\ngit checkout $(GITVERSION)" > $(BUILD_DIR)/debian/SOURCE
	@$(foreach dir, $(DIRS),echo "$(dir)=$($(dir))" >> $(BUILD_DIR)/debian/rules.d/env.mk;)
	echo "KVNAME=$(KVNAME)" >> $(BUILD_DIR)/debian/rules.d/env.mk
	echo "KERNEL_MAJMIN=$(KERNEL_MAJMIN)" >> $(BUILD_DIR)/debian/rules.d/env.mk
	cd $(BUILD_DIR); debian/rules debian/control
	touch $@

$(KERNEL_SRC).prepared: $(KERNEL_SRC_SUBMODULE) | submodule
	rm -rf $(BUILD_DIR)/$(KERNEL_SRC) $@
	mkdir -p $(BUILD_DIR)
	cp -a $(KERNEL_SRC_SUBMODULE) $(BUILD_DIR)/$(KERNEL_SRC)
# TODO: split for archs, track and diff in our repository?
	cd $(BUILD_DIR)/$(KERNEL_SRC); python3 debian/scripts/misc/annotations --arch amd64 --export >../../$(KERNEL_CFG_ORG)
	cp $(KERNEL_CFG_ORG) $(BUILD_DIR)/$(KERNEL_SRC)/.config
	sed -i $(BUILD_DIR)/$(KERNEL_SRC)/Makefile -e 's/^EXTRAVERSION.*$$/EXTRAVERSION=$(EXTRAVERSION)/'
	rm -rf $(BUILD_DIR)/$(KERNEL_SRC)/debian $(BUILD_DIR)/$(KERNEL_SRC)/debian.master
	set -e; cd $(BUILD_DIR)/$(KERNEL_SRC); \
	  for patch in ../../patches/kernel/*.patch; do \
	    echo "applying patch '$$patch'"; \
	    patch --batch -p1 < "$${patch}"; \
	  done
	touch $@

$(MODULES).prepared: $(addsuffix .prepared,$(MODULE_DIRS))
	touch $@

$(ZFSDIR).prepared: $(ZFSONLINUX_SUBMODULE)
	rm -rf $(BUILD_DIR)/$(MODULES)/$(ZFSDIR) $(BUILD_DIR)/$(MODULES)/tmp $@
	mkdir -p $(BUILD_DIR)/$(MODULES)/tmp
	cp -a $(ZFSONLINUX_SUBMODULE)/* $(BUILD_DIR)/$(MODULES)/tmp
	cd $(BUILD_DIR)/$(MODULES)/tmp; make kernel
	rm -rf $(BUILD_DIR)/$(MODULES)/tmp
	touch $(ZFSDIR).prepared

.PHONY: upload
upload: UPLOAD_DIST ?= $(DEB_DISTRIBUTION)
upload: $(DEBS)
	tar cf - $(DEBS)|ssh -X repoman@repo.proxmox.com -- upload --product pve,pmg,pbs --dist $(UPLOAD_DIST) --arch $(ARCH)

.PHONY: distclean
distclean: clean
	git submodule deinit --all

# upgrade to current master
.PHONY: update_modules
update_modules: submodule
	git submodule foreach 'git pull --ff-only origin master'
	cd $(ZFSONLINUX_SUBMODULE); git pull --ff-only origin master

# make sure submodules were initialized
.PHONY: submodule
submodule:
	test -f "$(KERNEL_SRC_SUBMODULE)/README" || git submodule update --init $(KERNEL_SRC_SUBMODULE)
	test -f "$(ZFSONLINUX_SUBMODULE)/Makefile" || git submodule update --init --recursive $(ZFSONLINUX_SUBMODULE)

# call after ABI bump with header deb in working directory
.PHONY: abiupdate
abiupdate: abi-prev-$(KVNAME)
abi-prev-$(KVNAME): abi-tmp-$(KVNAME)
ifneq ($(strip $(shell git status --untracked-files=no --porcelain -z)),)
	@echo "working directory unclean, aborting!"
	@false
else
	git rm "abi-prev-*"
	mv $< $@
	git add $@
	git commit -s -m "update ABI file for $(KVNAME)" -m "(generated with debian/scripts/abi-generate)"
	@echo "update abi-prev-$(KVNAME) committed!"
endif

abi-tmp-$(KVNAME):
	@ test -e $(HDR_DEB) || (echo "need $(HDR_DEB) to extract ABI data!" && false)
	debian/scripts/abi-generate $(HDR_DEB) $@ $(KVNAME) 1

.PHONY: clean
clean:
	rm -rf *~ proxmox-kernel-[0-9]*/ *.prepared $(KERNEL_CFG_ORG)
	rm -f *.deb *.dsc *.changes *.buildinfo *.build proxmox-kernel*.tar.*