# SPDX-License-Identifier: GPL-2.0-only

  # Makefile for the different targets used to generate full packages of a kernel

  
  include $(srctree)/scripts/Kbuild.include

  # RPM target
  # ---------------------------------------------------------------------------
  # The rpm target generates two rpm files:
  # /usr/src/packages/SRPMS/kernel-2.6.7rc2-1.src.rpm
  # /usr/src/packages/RPMS/i386/kernel-2.6.7rc2-1.<arch>.rpm
  # The src.rpm files includes all source for the kernel being built
  # The <arch>.rpm includes kernel configuration, modules etc.
  #
  # Process to create the rpm files
  # a) clean the kernel
  # b) Generate .spec file
  # c) Build a tar ball, using symlink to make kernel version
  #    first entry in the path
  # d) and pack the result to a tar.gz file
  # e) generate the rpm files, based on kernel.spec
  # - Use /. to avoid tar packing just the symlink

  # Note that the rpm-pkg target cannot be used with KBUILD_OUTPUT,
  # but the binrpm-pkg target can; for some reason O= gets ignored.

  # Remove hyphens since they have special meaning in RPM filenames

  KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASE))

  KDEB_SOURCENAME ?= linux-$(KERNELRELEASE)

  KBUILD_PKG_ROOTCMD ?="fakeroot -u"

  export KDEB_SOURCENAME

  # Include only those top-level files that are needed by make, plus the GPL copy

  TAR_CONTENT := $(KBUILD_ALLDIRS) .config .scmversion Makefile \

                 Kbuild Kconfig COPYING $(wildcard localversion*)

  MKSPEC     := $(srctree)/scripts/package/mkspec

  quiet_cmd_src_tar = TAR     $(2).tar.gz
        cmd_src_tar = \
  if test "$(objtree)" != "$(srctree)"; then \

  	echo >&2; \
  	echo >&2 "  ERROR:"; \
  	echo >&2 "  Building source tarball is not possible outside the"; \
  	echo >&2 "  kernel source tree. Don't set KBUILD_OUTPUT, or use the"; \
  	echo >&2 "  binrpm-pkg or bindeb-pkg target instead."; \
  	echo >&2; \

  	false; \
  fi ; \
  $(srctree)/scripts/setlocalversion --save-scmversion; \

  tar -I $(KGZIP) -c $(RCS_TAR_IGNORE) -f $(2).tar.gz \

  	--transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3); \
  rm -f $(objtree)/.scmversion

  # rpm-pkg

  # ---------------------------------------------------------------------------

  PHONY += rpm-pkg
  rpm-pkg:

  	$(MAKE) clean

  	$(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec

  	$(call cmd,src_tar,$(KERNELPATH),kernel.spec)

  	+rpmbuild $(RPMOPTS) --target $(UTS_MACHINE) -ta $(KERNELPATH).tar.gz \
  	--define='_smp_mflags %{nil}'

  
  # binrpm-pkg

  # ---------------------------------------------------------------------------

  PHONY += binrpm-pkg
  binrpm-pkg:

  	$(MAKE) -f $(srctree)/Makefile

  	$(CONFIG_SHELL) $(MKSPEC) prebuilt > $(objtree)/binkernel.spec

  	+rpmbuild $(RPMOPTS) --define "_builddir $(objtree)" --target \

  		$(UTS_MACHINE) -bb $(objtree)/binkernel.spec

  PHONY += deb-pkg
  deb-pkg:

  	$(MAKE) clean

  	$(CONFIG_SHELL) $(srctree)/scripts/package/mkdebian

  	$(call cmd,src_tar,$(KDEB_SOURCENAME))

  	origversion=$$(dpkg-parsechangelog -SVersion |sed 's/-[^-]*$$//');\
  		mv $(KDEB_SOURCENAME).tar.gz ../$(KDEB_SOURCENAME)_$${origversion}.orig.tar.gz

  	+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -i.git -us -uc

  PHONY += bindeb-pkg
  bindeb-pkg:

  	$(CONFIG_SHELL) $(srctree)/scripts/package/mkdebian

  	+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -b -nc -uc

  PHONY += intdeb-pkg
  intdeb-pkg:

  	+$(CONFIG_SHELL) $(srctree)/scripts/package/builddeb

  # snap-pkg
  # ---------------------------------------------------------------------------

  PHONY += snap-pkg
  snap-pkg:

  	rm -rf $(objtree)/snap
  	mkdir $(objtree)/snap
  	$(MAKE) clean
  	$(call cmd,src_tar,$(KERNELPATH))
  	sed "s@KERNELRELEASE@$(KERNELRELEASE)@; \
  		s@SRCTREE@$(shell realpath $(KERNELPATH).tar.gz)@" \
  		$(srctree)/scripts/package/snapcraft.template > \
  		$(objtree)/snap/snapcraft.yaml
  	cd $(objtree)/snap && \
  	snapcraft --target-arch=$(UTS_MACHINE)

  # tarball targets
  # ---------------------------------------------------------------------------

  tar-pkgs := dir-pkg tar-pkg targz-pkg tarbz2-pkg tarxz-pkg

  PHONY += $(tar-pkgs)
  $(tar-pkgs):

  	$(MAKE) -f $(srctree)/Makefile

  	+$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@

  # perf-pkg - generate a source tarball with perf source
  # ---------------------------------------------------------------------------
  
  perf-tar=perf-$(KERNELVERSION)
  
  quiet_cmd_perf_tar = TAR
        cmd_perf_tar = \

  git --git-dir=$(srctree)/.git archive --prefix=$(perf-tar)/         \
  	HEAD^{tree} $$(cd $(srctree);                               \

  		       echo $$(cat tools/perf/MANIFEST)) \

  	-o $(perf-tar).tar;                                         \

  mkdir -p $(perf-tar);                                               \

  git --git-dir=$(srctree)/.git rev-parse HEAD > $(perf-tar)/HEAD;    \

  (cd $(srctree)/tools/perf;                                          \

  util/PERF-VERSION-GEN $(CURDIR)/$(perf-tar)/);              \

  tar rf $(perf-tar).tar $(perf-tar)/HEAD $(perf-tar)/PERF-VERSION-FILE; \

  rm -r $(perf-tar);                                                  \
  $(if $(findstring tar-src,$@),,                                     \

  $(if $(findstring bz2,$@),$(KBZIP2),                                 \
  $(if $(findstring gz,$@),$(KGZIP),                                  \

  $(if $(findstring xz,$@),$(XZ),                                     \

  $(error unknown target $@))))                                       \

  	-f -9 $(perf-tar).tar)

  perf-tar-pkgs := perf-tar-src-pkg perf-targz-src-pkg perf-tarbz2-src-pkg perf-tarxz-src-pkg
  PHONY += $(perf-tar-pkgs)
  $(perf-tar-pkgs):

  	$(call cmd,perf_tar)

  # Help text displayed when executing 'make help'
  # ---------------------------------------------------------------------------

  PHONY += help
  help:

  	@echo '  rpm-pkg             - Build both source and binary RPM kernel packages'

  	@echo '  binrpm-pkg          - Build only the binary kernel RPM package'
  	@echo '  deb-pkg             - Build both source and binary deb kernel packages'
  	@echo '  bindeb-pkg          - Build only the binary kernel deb package'

  	@echo '  snap-pkg            - Build only the binary kernel snap package'
  	@echo '                        (will connect to external hosts)'

  	@echo '  dir-pkg             - Build the kernel as a plain directory structure'

  	@echo '  tar-pkg             - Build the kernel as an uncompressed tarball'
  	@echo '  targz-pkg           - Build the kernel as a gzip compressed tarball'
  	@echo '  tarbz2-pkg          - Build the kernel as a bzip2 compressed tarball'

  	@echo '  tarxz-pkg           - Build the kernel as a xz compressed tarball'

  	@echo '  perf-tar-src-pkg    - Build $(perf-tar).tar source tarball'
  	@echo '  perf-targz-src-pkg  - Build $(perf-tar).tar.gz source tarball'
  	@echo '  perf-tarbz2-src-pkg - Build $(perf-tar).tar.bz2 source tarball'

  	@echo '  perf-tarxz-src-pkg  - Build $(perf-tar).tar.xz source tarball'

  
  .PHONY: $(PHONY)