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https://github.com/gentoo-mirror/guru.git
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283 lines
8.2 KiB
Bash
283 lines
8.2 KiB
Bash
# Copyright 2020-2022 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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inherit kernel-build toolchain-funcs
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MY_P=linux-${PV%.*}
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GENPATCHES_P=genpatches-${PV%.*}-$(( ${PV##*.} + 0 ))
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# https://koji.fedoraproject.org/koji/packageinfo?packageID=8
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# forked to https://github.com/projg2/fedora-kernel-config-for-gentoo
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CONFIG_VER=6.0.8-gentoo
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GENTOO_CONFIG_VER=g3
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DESCRIPTION="Linux kernel built with Gentoo patches"
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HOMEPAGE="https://www.kernel.org/"
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SRC_URI+="
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https://cdn.kernel.org/pub/linux/kernel/v$(ver_cut 1).x/${MY_P}.tar.xz
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https://dev.gentoo.org/~alicef/dist/genpatches/${GENPATCHES_P}.base.tar.xz
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https://dev.gentoo.org/~alicef/dist/genpatches/${GENPATCHES_P}.extras.tar.xz
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https://github.com/projg2/gentoo-kernel-config/archive/${GENTOO_CONFIG_VER}.tar.gz
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-> gentoo-kernel-config-${GENTOO_CONFIG_VER}.tar.gz
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amd64? (
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https://raw.githubusercontent.com/projg2/fedora-kernel-config-for-gentoo/${CONFIG_VER}/kernel-x86_64-fedora.config
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-> kernel-x86_64-fedora.config.${CONFIG_VER}
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)
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arm64? (
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https://raw.githubusercontent.com/projg2/fedora-kernel-config-for-gentoo/${CONFIG_VER}/kernel-aarch64-fedora.config
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-> kernel-aarch64-fedora.config.${CONFIG_VER}
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)
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ppc64? (
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https://raw.githubusercontent.com/projg2/fedora-kernel-config-for-gentoo/${CONFIG_VER}/kernel-ppc64le-fedora.config
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-> kernel-ppc64le-fedora.config.${CONFIG_VER}
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)
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x86? (
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https://raw.githubusercontent.com/projg2/fedora-kernel-config-for-gentoo/${CONFIG_VER}/kernel-i686-fedora.config
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-> kernel-i686-fedora.config.${CONFIG_VER}
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)
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"
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S=${WORKDIR}/${MY_P}
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LICENSE="GPL-2"
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KEYWORDS="~amd64 ~arm ~x86"
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IUSE="debug hardened pic static +hostfs +iomem"
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REQUIRED_USE="arm? ( savedconfig )
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hppa? ( savedconfig )
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riscv? ( savedconfig )"
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RDEPEND="
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sys-apps/usermode-utilities
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"
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BDEPEND="
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debug? ( dev-util/pahole )
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"
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QA_FLAGS_IGNORED="
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usr/src/linux-.*/scripts/gcc-plugins/.*.so
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usr/src/linux-.*/vmlinux
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usr/src/linux-.*/arch/powerpc/kernel/vdso.*/vdso.*.so.dbg
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"
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src_prepare() {
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local PATCHES=(
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# meh, genpatches have no directory
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"${WORKDIR}"/*.patch
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)
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default
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local biendian=false
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# prepare the default config
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case ${ARCH} in
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amd64)
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cp "${DISTDIR}/kernel-x86_64-fedora.config.${CONFIG_VER}" .config || die
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;;
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arm)
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return
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;;
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arm64)
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cp "${DISTDIR}/kernel-aarch64-fedora.config.${CONFIG_VER}" .config || die
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biendian=true
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;;
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hppa)
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return
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;;
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ppc)
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# assume powermac/powerbook defconfig
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# we still package.use.force savedconfig
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cp "${WORKDIR}/${MY_P}/arch/powerpc/configs/pmac32_defconfig" .config || die
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;;
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ppc64)
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cp "${DISTDIR}/kernel-ppc64le-fedora.config.${CONFIG_VER}" .config || die
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biendian=true
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;;
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riscv)
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return
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;;
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x86)
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cp "${DISTDIR}/kernel-i686-fedora.config.${CONFIG_VER}" .config || die
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;;
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*)
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die "Unsupported arch ${ARCH}"
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;;
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esac
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local myversion="-usermode-gentoo"
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use hardened && myversion+="-hardened"
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echo "CONFIG_LOCALVERSION=\"${myversion}\"" > "${T}"/version.config || die
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local dist_conf_path="${WORKDIR}/gentoo-kernel-config-${GENTOO_CONFIG_VER}"
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local merge_configs=(
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"${T}"/version.config
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"${dist_conf_path}"/base.config
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)
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use debug || merge_configs+=(
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"${dist_conf_path}"/no-debug.config
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)
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if use hardened; then
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merge_configs+=( "${dist_conf_path}"/hardened-base.config )
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tc-is-gcc && merge_configs+=( "${dist_conf_path}"/hardened-gcc-plugins.config )
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if [[ -f "${dist_conf_path}/hardened-${ARCH}.config" ]]; then
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merge_configs+=( "${dist_conf_path}/hardened-${ARCH}.config" )
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fi
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fi
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# this covers ppc64 and aarch64_be only for now
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if [[ ${biendian} == true && $(tc-endian) == big ]]; then
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merge_configs+=( "${dist_conf_path}/big-endian.config" )
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fi
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kernel-build_merge_configs "${merge_configs[@]}"
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}
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src_configure() {
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default
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MAKEARGS+=( ARCH="um" )
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if use pic; then
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MAKEARGS+=( KCFLAGS="-fPIC" )
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fi
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restore_config .config
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emake O="${WORKDIR}"/modprep "${MAKEARGS[@]}" mrproper
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mv .config "${WORKDIR}"/modprep/.config || die
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# UML
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if use static; then
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echo "CONFIG_STATIC_LINK=y" >> "${WORKDIR}"/modprep/.config || die
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fi
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if use hostfs; then
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echo "CONFIG_HOSTFS=y" >> "${WORKDIR}"/modprep/.config || die
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fi
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if use iomem; then
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echo "CONFIG_MMAPPER=y" >> "${WORKDIR}"/modprep/.config || die
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fi
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echo "CONFIG_UML_TIME_TRAVEL_SUPPORT=y" >> "${WORKDIR}"/modprep/.config || die
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# Character Devices
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echo "CONFIG_STDERR_CONSOLE=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_SSL=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_NULL_CHAN=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_PORT_CHAN=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_PTY_CHAN=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_TTY_CHAN=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_XTERM_CHAN=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_UML_SOUND=y" >> "${WORKDIR}"/modprep/.config || die
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# Network Devices
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echo "CONFIG_UML_NET=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_UML_NET_VECTOR=y" >> "${WORKDIR}"/modprep/.config || die
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# Kernel
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echo "CONFIG_VIRTIO_UML=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_UML_RTC=y" >> "${WORKDIR}"/modprep/.config || die
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# Block Devices
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echo "CONFIG_BLK_DEV_UBD=y" >> "${WORKDIR}"/modprep/.config || die
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echo "CONFIG_BLK_DEV_UBD_SYNC=y" >> "${WORKDIR}"/modprep/.config || die
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# Watchdog Timer
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echo "CONFIG_UML_WATCHDOG=y" >> "${WORKDIR}"/modprep/.config || die
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# Character Devices
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echo "CONFIG_UML_RANDOM=y" >> "${WORKDIR}"/modprep/.config || 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_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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local targets=( modules_install )
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emake O="${WORKDIR}"/build "${MAKEARGS[@]}" \
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INSTALL_MOD_PATH="${ED}" INSTALL_PATH="${ED}/boot" "${targets[@]}"
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# note: we're using mv rather than doins to save space and time
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# install main and arch-specific headers first, and scripts
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local kern_arch="um"
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local mods_arch="x86" # hardcoded!
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local dir_ver=${PV}${KV_LOCALVERSION}
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local kernel_dir=/usr/src/linux-${dir_ver}
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dodir "${kernel_dir}/arch/${kern_arch}"
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dodir "${kernel_dir}/arch/${mods_arch}"
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mv include scripts "${ED}${kernel_dir}/" || die
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mv "arch/${kern_arch}/include" \
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"${ED}${kernel_dir}/arch/${kern_arch}/" || die
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mv "arch/${mods_arch}/include" \
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"${ED}${kernel_dir}/arch/${mods_arch}/" || die
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# remove everything but Makefile* and Kconfig*
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find -type f '!' '(' -name 'Makefile*' -o -name 'Kconfig*' ')' \
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-delete || die
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find -type l -delete || die
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cp -p -R * "${ED}${kernel_dir}/" || die
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cd "${WORKDIR}" || die
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# strip out-of-source build stuffs from modprep
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# and then copy built files as well
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find modprep -type f '(' \
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-name Makefile -o \
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-name '*.[ao]' -o \
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'(' -name '.*' -a -not -name '.config' ')' \
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')' -delete || die
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rm modprep/source || die
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cp -p -R modprep/. "${ED}${kernel_dir}"/ || die
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# install the kernel and files needed for module builds
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insinto "${kernel_dir}"
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doins build/{System.map,Module.symvers}
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local image_path="linux"
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cp -p "build/${image_path}" "${ED}${kernel_dir}/${image_path}" || die
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# building modules fails with 'vmlinux has no symtab?' if stripped
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use ppc64 && dostrip -x "${kernel_dir}/${image_path}"
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# Install vmlinux with debuginfo when requested
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if use debug; then
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if [[ "${image_path}" != "linux" ]]; then
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mv "build/linux" "${ED}${kernel_dir}/linux" || die
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fi
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dostrip -x "${kernel_dir}/linux"
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fi
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dobin "${kernel_dir}/linux"
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# strip empty directories
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find "${D}" -type d -empty -exec rmdir {} + || die
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local relfile=${ED}${kernel_dir}/include/config/kernel.release
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local module_ver
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module_ver=$(<"${relfile}") || die
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# fix source tree and build dir symlinks
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dosym "../../../${kernel_dir}" "/lib/modules/${module_ver}/build"
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dosym "../../../${kernel_dir}" "/lib/modules/${module_ver}/source"
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save_config build/.config
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}
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pkg_postinst() {
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# disable kernel-install_pkg_postinst
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setcap cap_net_admin+ep "/usr/bin/linux" || die
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}
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pkg_prerm() {
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# disable kernel-install_pkg_prerm
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true
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}
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pkg_postrm() {
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# disable kernel-install_pkg_postrm
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true
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}
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