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sys-kernel/vanilla-kernel: New package providing built kernel
New package whose primary purpose is to provide a zero-effort way of ensuring that your system is running a working distribution kernel that gets cleanly upgraded as part of @world upgrades. The secondary goal is to make it possible to build universal binary packages that can be afterwards installed on variety of systems with different hardware, /boot layouts and bootloaders. Closes: https://github.com/gentoo/gentoo/pull/13871 Signed-off-by: Michał Górny <mgorny@gentoo.org>
This commit is contained in:
Michał Górny
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# Copyright 1999-2019 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# Michał Górny <mgorny@gentoo.org> (2019-12-06)
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# Non-initramfs builds do not work with the default .config. Force
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# the mask, so that users don't brick their systems. If somebody wants
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# to avoid initramfs, he needs to use a custom .config and unforce
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# the flag.
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sys-kernel/vanilla-kernel initramfs
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# Sergei Trofimovich <slyfox@gentoo.org> (2019-11-06)
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# Upstream plans to drop libcrypt.so.1/crypt.h from glibc
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# distribution and rely on external providers lke libxcrypt.
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2
sys-kernel/vanilla-kernel/Manifest
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2
sys-kernel/vanilla-kernel/Manifest
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DIST linux-5.4.1.arch1-1.config 241587 BLAKE2B 71db76bf30a8d7f4dc680399b9f9fbb4236d1938bb86e23eb1ab236a667a959fc1cff788f7e432c43a6173e1bac4e20f3a6c3391d84275d46f1f66bd338bf538 SHA512 34d66658963dbd72fa3e96f2c5d5bccafb781fa14f6ebafe7859953929ba2fbb112f1435ca68cec8389d789cf0efa81d5fc0f5ac6dfa23a704348ab83709e9db
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DIST linux-5.4.2.tar.xz 109441848 BLAKE2B 126e00ef6a084049089f6733e480e68271083cc5f88bd2c64cba198c983c78c3e5f61a9cded8357d1767c4faadec5ab81c1a7231cc65f41913de2820e02a3467 SHA512 42bd0e1887555cf92d424243d85bb39911669da814b0201503319604f1d45f7f0b45d535ee08ca7831f47047db96125496159945c3cd05dac491e0f5e0685854
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15
sys-kernel/vanilla-kernel/metadata.xml
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sys-kernel/vanilla-kernel/metadata.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
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<pkgmetadata>
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<maintainer type="person">
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<email>mgorny@gentoo.org</email>
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<name>Michał Górny</name>
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</maintainer>
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<maintainer type="person">
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<email>zlogene@gentoo.org</email>
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<name>Mikle Kolyada</name>
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</maintainer>
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<use>
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<flag name='initramfs'>Build initramfs along with the kernel.</flag>
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</use>
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</pkgmetadata>
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168
sys-kernel/vanilla-kernel/vanilla-kernel-5.4.2.ebuild
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168
sys-kernel/vanilla-kernel/vanilla-kernel-5.4.2.ebuild
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# Copyright 2019 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=7
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inherit mount-boot savedconfig toolchain-funcs
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MY_P=linux-${PV}
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CONFIG_VER=5.4.1.arch1-1
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CONFIG_HASH=d6bbb261bd2c8f83b9c93041dae9aa4175e20e6e
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DESCRIPTION="Linux kernel built from vanilla upstream sources"
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HOMEPAGE="https://www.kernel.org/"
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SRC_URI="https://cdn.kernel.org/pub/linux/kernel/v5.x/${MY_P}.tar.xz
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https://git.archlinux.org/svntogit/packages.git/plain/trunk/config?h=packages/linux&id=${CONFIG_HASH}
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-> linux-${CONFIG_VER}.config"
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S=${WORKDIR}/${MY_P}
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LICENSE="GPL-2"
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SLOT="${PV}"
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KEYWORDS="~amd64"
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IUSE="+initramfs"
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# install-DEPEND actually
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# note: we need installkernel with initramfs support!
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RDEPEND="
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|| (
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sys-kernel/installkernel-gentoo
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sys-kernel/installkernel-systemd-boot
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)
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initramfs? ( sys-kernel/dracut )"
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pkg_pretend() {
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mount-boot_pkg_pretend
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ewarn "This is an experimental package. The built kernel and/or initramfs"
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ewarn "may not work at all or fail with your bootloader configuration. Please"
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ewarn "make sure to keep a backup kernel available before testing it."
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}
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src_configure() {
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# force ld.bfd if we can find it easily
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local LD="$(tc-getLD)"
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if type -P "${LD}.bfd" &>/dev/null; then
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LD+=.bfd
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fi
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MAKEARGS=(
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V=1
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HOSTCC="$(tc-getCC)"
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HOSTCXX="$(tc-getCXX)"
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HOSTCFLAGS="${CFLAGS}"
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HOSTLDFLAGS="${LDFLAGS}"
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AS="$(tc-getAS)"
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CC="$(tc-getCC)"
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LD="${LD}"
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AR="$(tc-getAR)"
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NM="$(tc-getNM)"
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STRIP=":"
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OBJCOPY="$(tc-getOBJCOPY)"
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OBJDUMP="$(tc-getOBJDUMP)"
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# we need to pass it to override colliding Gentoo envvar
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ARCH=x86
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)
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cp "${DISTDIR}"/linux-${CONFIG_VER}.config .config || die
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# while Arch config is cool, we don't want gcc plugins as they
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# break distcc
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sed -i -e '/GCC_PLUGIN/d' .config || die
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# module compression prevents us from stripping them post-inst
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sed -i -e '/MODULE_COMPRESS/d' .config || die
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# shove our theft under the carpet!
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sed -i -e '/HOSTNAME/s:archlinux:gentoo:' .config || die
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restore_config .config
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mkdir -p "${WORKDIR}"/modprep || die
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mv .config "${WORKDIR}"/modprep/ || die
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emake O="${WORKDIR}"/modprep "${MAKEARGS[@]}" olddefconfig
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emake O="${WORKDIR}"/modprep "${MAKEARGS[@]}" modules_prepare
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cp -pR "${WORKDIR}"/modprep "${WORKDIR}"/build || die
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}
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src_compile() {
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emake O="${WORKDIR}"/build "${MAKEARGS[@]}" all
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}
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src_test() {
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:
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}
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src_install() {
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# do not use 'make install' as it behaves differently based
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# on what kind of installkernel is installed
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emake O="${WORKDIR}"/build "${MAKEARGS[@]}" \
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INSTALL_MOD_PATH="${ED}" modules_install
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# install headers and prepared objects on top of them
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# note: we're using mv rather than doins to save space and time
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find -name '*.c' -delete || die
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rm -r Documentation || die
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dodir /usr/src
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cd "${WORKDIR}" || die
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mv "${S}" "${ED}"/usr/src/ || die
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# strip out-of-source build stuffs from modprep
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find modprep -type f '(' \
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-name Makefile -o \
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-name '*.[ao]' -o \
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'(' -name '.*' -a -not -name '.config' ')' \
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')' -delete || die
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rm modprep/source || die
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cp -pR modprep/. "${ED}/usr/src/linux-${PV}"/ || die
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# install the kernel and files needed for module builds
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cp build/{arch/x86/boot/bzImage,System.map,Module.symvers} \
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"${ED}/usr/src/linux-${PV}"/ || die
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# fix source tree and build dir symlinks
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dosym ../../../usr/src/linux-${PV} /lib/modules/${PV}/build
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dosym ../../../usr/src/linux-${PV} /lib/modules/${PV}/source
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save_config build/.config
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}
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pkg_preinst() {
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:
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}
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pkg_postinst() {
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if [[ -z ${ROOT} ]]; then
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mount-boot_pkg_preinst
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local fail=
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if use initramfs; then
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ebegin "Building initramfs via dracut"
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# putting it alongside kernel image as 'initrd' makes
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# kernel-install happier
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dracut --force "${EROOT}/usr/src/linux-${PV}/initrd" "${PV}"
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eend || die "Building initramfs failed"
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fi
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ebegin "Installing the kernel via installkernel"
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# note: .config is taken relatively to System.map;
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# initrd relatively to bzImage
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installkernel "${PV}" \
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"${EROOT}/usr/src/linux-${PV}/bzImage" \
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"${EROOT}/usr/src/linux-${PV}/System.map"
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eend || fail=1
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[[ ${fail} ]] && die "Installing the kernel failed"
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# TODO: update /usr/src/linux symlink?
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fi
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savedconfig_pkg_postinst
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}
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pkg_prerm() {
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:
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}
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pkg_postrm() {
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rm -f "${EROOT}/usr/src/linux-${PV}/initrd" &&
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rmdir --ignore-fail-on-non-empty "${EROOT}/usr/src/linux-${PV}"
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}
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