sys-kernel/libre-kernel: fallback URI for kernel releases, smarter discovery of gentoo patches, drop non-amd64 arches.
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# Copyright 2020-2023 Gentoo Authors, projectmoon
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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 verify-sig
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BASE_VER="$(ver_cut 1).$(ver_cut 2).$(ver_cut 3)"
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RESTRICT="mirror"
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GENPATCHES_P=genpatches-${PV%.*}-$(( ${PV##*.} + 4 ))
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CONFIG_VER=5.15.19
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CONFIG_HASH=ec69da7a42b5b7c3da91572ef22097b069ddbd01
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GENTOO_CONFIG_VER=g6
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DESCRIPTION="GNU Linux-libre kernel built from upstream sources"
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HOMEPAGE="https://www.fsfla.org/ikiwiki/selibre/linux-libre/"
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SRC_URI+="
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https://git.agnos.is/projectmoon/projectmoon-overlay-files/media/branch/main/sys-kernel/libre-kernel/linux-libre-${BASE_VER}-gnu.tar.xz
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https://linux-libre.fsfla.org/pub/linux-libre/releases/${BASE_VER}-gnu/linux-libre-${BASE_VER}-gnu.tar.xz
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https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.base.tar.xz
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https://dev.gentoo.org/~mpagano/dist/genpatches/${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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verify-sig? (
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https://git.agnos.is/projectmoon/projectmoon-overlay-files/media/branch/main/sys-kernel/libre-kernel/linux-libre-${BASE_VER}-gnu.tar.xz.sign
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)
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amd64? (
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https://raw.githubusercontent.com/projg2/fedora-kernel-config-for-gentoo/${CONFIG_VER}/kernel-x86_64-fedora.config
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-> kernel-x86_64-fedora.config.${CONFIG_VER}
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)
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"
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# Workdir is named linux-PV.
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MY_P=linux-${PV}
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S=${WORKDIR}/${MY_P}
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LICENSE="GPL-2"
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KEYWORDS="amd64"
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IUSE="debug +gentoo"
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BDEPEND="
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debug? ( dev-util/pahole )
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verify-sig? ( sec-keys/openpgp-keys-linux-libre )
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"
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PDEPEND="
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>=virtual/dist-kernel-${PV}
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"
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VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/linux-libre.asc
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pkg_pretend() {
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if has_version -d sys-kernel/linux-firmware[redistributable]; then
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ewarn "sys-kernel/linux-firmware was found installed on your system,"
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ewarn "but it is configured to install non-Free firmware files."
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ewarn "The non-Free firmware files may be required for some hardware"
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ewarn "work. The Linux-libre kernel cannot load non-Free firmware."
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ewarn "To install only the Free firmware, set the -redistributable"
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ewarn "USE flag on sys-kernel/linux-firmware."
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if use initramfs; then
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elog
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elog "If you decide to change or remove linux-firmware later, you"
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elog "can rebuild the initramfs via issuing a command equivalent to:"
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elog
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elog " emerge --config ${CATEGORY}/${PN}:${SLOT}"
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fi
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else
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if ! has_version -d sys-kernel/linux-firmware; then
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ewarn "sys-kernel/linux-firmware[-redistributable] not found installed"
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ewarn "on your system. This package provides various firmware files that"
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ewarn "may be needed for your hardware to work. If in doubt, it is recommended"
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ewarn "to pause or abort the build process and install it before"
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ewarn "resuming."
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if use initramfs; then
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elog
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elog "If you decide to install linux-firmware later, you can rebuild"
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elog "the initramfs via issuing a command equivalent to:"
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elog
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elog " emerge --config ${CATEGORY}/${PN}:${SLOT}"
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fi
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fi
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fi
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}
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src_unpack() {
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if use verify-sig; then
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FILE="${DISTDIR}"/linux-libre-${PV}-gnu.tar.xz
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SIGFILE="${DISTDIR}"/linux-libre-${PV}-gnu.tar.xz.sign
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verify-sig_verify_detached $FILE $SIGFILE
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fi
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default
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}
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src_prepare() {
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local PATCHES
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if use gentoo; then
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# Fiters out the kernel incremenetal version upgrade patches,
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# leaving only the Gentoo bug fix/functionality changes. The
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# regex removes any patches starting with 10XX to 14XX.
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MY_PATCHES=$(find "${WORKDIR}"/*.patch -printf "%f\n" | grep -v -E -e '^1[01234][[:digit:]][[:digit:]]_.+.patch')
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PATCHES=$(echo "$MY_PATCHES" | sed 's|^|'"${WORKDIR}/"'|g')
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else
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# If no patches are to be applied, apply only the config changes
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# for a Gentoo installation, as this does not change any actual
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# Kernel functionality.
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PATCHES="${WORKDIR}/4567_distro-Gentoo-Kconfig.patch"
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fi
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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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*)
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die "Unsupported arch ${ARCH}"
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;;
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esac
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sed -i 's/EXTRAVERSION = -gnu/EXTRAVERSION = /' "${S}"/Makefile || \
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die 'could not remove EXTRAVERSION'
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local myversion="-gnu-dist"
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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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# 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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