kbuild: add script and target to generate pacman package

pacman is the package manager used by Arch Linux and its derivates. Creating native packages from the kernel tree has multiple advantages: * The package triggers the correct hooks for initramfs generation and bootloader configuration * Uninstallation is complete and also invokes the relevant hooks * New UAPI headers can be installed without any manual bookkeeping The PKGBUILD file is a modified version of the one used for the downstream Arch Linux "linux" package. Extra steps that should not be necessary for a development kernel have been removed and an UAPI header package has been added.

Thomas Weißschuh committed 2 years ago

Commit c8578531 parent 3554a455 files · +136 −1Browse files

Unified · Split

5 files

.gitignore +6 −0
MAINTAINERS +7 −0
Makefile +1 −1
scripts/Makefile.package +14 −0
scripts/package/PKGBUILD +108 −0

.gitignore+6−0

 #
 /tar-install/
+#
+# pacman files (make pacman-pkg)
+#
+/PKGBUILD
+/pacman/
 #
 # We don't want to ignore the following even if they are dot-files
 #

MAINTAINERS+7−0

@@ -11998,6 +11998,13 @@ F: include/uapi/linux/nfsd/ · 11997 unmodified lines
11998	F: include/uapi/linux/sunrpc/	11998	F: include/uapi/linux/sunrpc/
11999	F: net/sunrpc/	11999	F: net/sunrpc/
12000		12000
		12001	KERNEL PACMAN PACKAGING (in addition to generic KERNEL BUILD)
		12002	M: Thomas Weißschuh <linux@weissschuh.net>
		12003	R: Christian Heusel <christian@heusel.eu>
		12004	R: Nathan Chancellor <nathan@kernel.org>
		12005	S: Maintained
		12006	F: scripts/package/PKGBUILD
		12007
12001	KERNEL REGRESSIONS	12008	KERNEL REGRESSIONS
12002	M: Thorsten Leemhuis <linux@leemhuis.info>	12009	M: Thorsten Leemhuis <linux@leemhuis.info>
12003	L: regressions@lists.linux.dev	12010	L: regressions@lists.linux.dev

Makefile+1−1

@@ -1489,7 +1489,7 @@ CLEAN_FILES += vmlinux.symvers modules-only.symvers \ · 1488 unmodified lines
1489	# Directories & files removed with 'make mrproper'	1489	# Directories & files removed with 'make mrproper'
1490	MRPROPER_FILES += include/config include/generated \	1490	MRPROPER_FILES += include/config include/generated \
1491	arch/$(SRCARCH)/include/generated .objdiff \	1491	arch/$(SRCARCH)/include/generated .objdiff \
1492	debian snap tar-install \	1492	debian snap tar-install PKGBUILD pacman \
1493	.config .config.old .version \	1493	.config .config.old .version \
1494	Module.symvers \	1494	Module.symvers \
1495	certs/signing_key.pem \	1495	certs/signing_key.pem \

scripts/Makefile.package+14−0

@@ -141,6 +141,19 @@ snap-pkg: · 140 unmodified lines
141	cd $(objtree)/snap && \	141	cd $(objtree)/snap && \
142	snapcraft --target-arch=$(UTS_MACHINE)	142	snapcraft --target-arch=$(UTS_MACHINE)
143		143
		144	# pacman-pkg
		145	# ---------------------------------------------------------------------------
		146
		147	PHONY += pacman-pkg
		148	pacman-pkg:
		149	@ln -srf $(srctree)/scripts/package/PKGBUILD $(objtree)/PKGBUILD
		150	+objtree="$(realpath $(objtree))" \
		151	BUILDDIR="$(realpath $(objtree))/pacman" \
		152	CARCH="$(UTS_MACHINE)" \
		153	KBUILD_MAKEFLAGS="$(MAKEFLAGS)" \
		154	KBUILD_REVISION="$(shell $(srctree)/scripts/build-version)" \
		155	makepkg $(MAKEPKGOPTS)
		156
144	# dir-pkg tar*-pkg - tarball targets	157	# dir-pkg tar*-pkg - tarball targets
145	# ---------------------------------------------------------------------------	158	# ---------------------------------------------------------------------------
146		159
@@ -221,6 +234,7 @@ help: · 74 unmodified lines
221	@echo ' bindeb-pkg - Build only the binary kernel deb package'	234	@echo ' bindeb-pkg - Build only the binary kernel deb package'
222	@echo ' snap-pkg - Build only the binary kernel snap package'	235	@echo ' snap-pkg - Build only the binary kernel snap package'
223	@echo ' (will connect to external hosts)'	236	@echo ' (will connect to external hosts)'
		237	@echo ' pacman-pkg - Build only the binary kernel pacman package'
224	@echo ' dir-pkg - Build the kernel as a plain directory structure'	238	@echo ' dir-pkg - Build the kernel as a plain directory structure'
225	@echo ' tar-pkg - Build the kernel as an uncompressed tarball'	239	@echo ' tar-pkg - Build the kernel as an uncompressed tarball'
226	@echo ' targz-pkg - Build the kernel as a gzip compressed tarball'	240	@echo ' targz-pkg - Build the kernel as a gzip compressed tarball'

scripts/package/PKGBUILD+108−0

@@ -0,0 +1,108 @@
	1	# SPDX-License-Identifier: GPL-2.0-only
	2	# Maintainer: Thomas Weißschuh <linux@weissschuh.net>
	3	# Contributor: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
	4
	5	pkgbase=${PACMAN_PKGBASE:-linux-upstream}
	6	pkgname=("${pkgbase}" "${pkgbase}-api-headers")
	7	if grep -q CONFIG_MODULES=y include/config/auto.conf; then
	8	pkgname+=("${pkgbase}-headers")
	9	fi
	10	pkgver="${KERNELRELEASE//-/_}"
	11	# The PKGBUILD is evaluated multiple times.
	12	# Running scripts/build-version from here would introduce inconsistencies.
	13	pkgrel="${KBUILD_REVISION}"
	14	pkgdesc='Upstream Linux'
	15	url='https://www.kernel.org/'
	16	# Enable flexible cross-compilation
	17	arch=(${CARCH})
	18	license=(GPL-2.0-only)
	19	makedepends=(
	20	bc
	21	bison
	22	cpio
	23	flex
	24	gettext
	25	kmod
	26	libelf
	27	openssl
	28	pahole
	29	perl
	30	python
	31	rsync
	32	tar
	33	)
	34	options=(!debug !strip !buildflags !makeflags)
	35
	36	build() {
	37	# MAKEFLAGS from makepkg.conf override the ones inherited from kbuild.
	38	# Bypass this override with a custom variable.
	39	export MAKEFLAGS="${KBUILD_MAKEFLAGS}"
	40	cd "${objtree}"
	41
	42	${MAKE} KERNELRELEASE="${KERNELRELEASE}" KBUILD_BUILD_VERSION="${pkgrel}"
	43	}
	44
	45	_package() {
	46	pkgdesc="The ${pkgdesc} kernel and modules"
	47
	48	export MAKEFLAGS="${KBUILD_MAKEFLAGS}"
	49	cd "${objtree}"
	50	local modulesdir="${pkgdir}/usr/${MODLIB}"
	51
	52	echo "Installing boot image..."
	53	# systemd expects to find the kernel here to allow hibernation
	54	# https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
	55	install -Dm644 "$(${MAKE} -s image_name)" "${modulesdir}/vmlinuz"
	56
	57	# Used by mkinitcpio to name the kernel
	58	echo "${pkgbase}" > "${modulesdir}/pkgbase"
	59
	60	echo "Installing modules..."
	61	${MAKE} INSTALL_MOD_PATH="${pkgdir}/usr" INSTALL_MOD_STRIP=1 \
	62	DEPMOD=true modules_install
	63
	64	if [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
	65	echo "Installing dtbs..."
	66	${MAKE} INSTALL_DTBS_PATH="${modulesdir}/dtb" dtbs_install
	67	fi
	68
	69	# remove build link, will be part of -headers package
	70	rm -f "${modulesdir}/build"
	71	}
	72
	73	_package-headers() {
	74	pkgdesc="Headers and scripts for building modules for the ${pkgdesc} kernel"
	75
	76	export MAKEFLAGS="${KBUILD_MAKEFLAGS}"
	77	cd "${objtree}"
	78	local builddir="${pkgdir}/usr/${MODLIB}/build"
	79
	80	echo "Installing build files..."
	81	"${srctree}/scripts/package/install-extmod-build" "${builddir}"
	82
	83	echo "Installing System.map and config..."
	84	cp System.map "${builddir}/System.map"
	85	cp .config "${builddir}/.config"
	86
	87	echo "Adding symlink..."
	88	mkdir -p "${pkgdir}/usr/src"
	89	ln -sr "${builddir}" "${pkgdir}/usr/src/${pkgbase}"
	90	}
	91
	92	_package-api-headers() {
	93	pkgdesc="Kernel headers sanitized for use in userspace"
	94	provides=(linux-api-headers)
	95	conflicts=(linux-api-headers)
	96
	97	export MAKEFLAGS="${KBUILD_MAKEFLAGS}"
	98	cd "${objtree}"
	99
	100	${MAKE} headers_install INSTALL_HDR_PATH="${pkgdir}/usr"
	101	}
	102
	103	for _p in "${pkgname[@]}"; do
	104	eval "package_$_p() {
	105	$(declare -f "_package${_p#$pkgbase}")
	106	_package${_p#$pkgbase}
	107	}"
	108	done

kbuild: add script and target to generate pacman package

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