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# Copyright 2020-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
inherit kernel-build toolchain-funcs
MY_P=linux-${PV%.*}
GENPATCHES_P=genpatches-${PV%.*}-$(( ${PV##*.} + 2 ))
CONFIG_VER=5.15.10
CONFIG_HASH=4882b85cc85fb2b7df396c4d671cc6432596eca0
GENTOO_CONFIG_VER=5.15.5
DESCRIPTION="Linux kernel built with Gentoo patches"
HOMEPAGE="https://www.kernel.org/"
SRC_URI+=" https://cdn.kernel.org/pub/linux/kernel/v$(ver_cut 1).x/${MY_P}.tar.xz
https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.base.tar.xz
https://dev.gentoo.org/~mpagano/dist/genpatches/${GENPATCHES_P}.extras.tar.xz
https://github.com/mgorny/gentoo-kernel-config/archive/v${GENTOO_CONFIG_VER}.tar.gz
-> gentoo-kernel-config-${GENTOO_CONFIG_VER}.tar.gz
amd64? (
https://src.fedoraproject.org/rpms/kernel/raw/${CONFIG_HASH}/f/kernel-x86_64-fedora.config
-> kernel-x86_64-fedora.config.${CONFIG_VER}
)
arm64? (
https://src.fedoraproject.org/rpms/kernel/raw/${CONFIG_HASH}/f/kernel-aarch64-fedora.config
-> kernel-aarch64-fedora.config.${CONFIG_VER}
)
ppc64? (
https://src.fedoraproject.org/rpms/kernel/raw/${CONFIG_HASH}/f/kernel-ppc64le-fedora.config
-> kernel-ppc64le-fedora.config.${CONFIG_VER}
)
x86? (
https://src.fedoraproject.org/rpms/kernel/raw/${CONFIG_HASH}/f/kernel-i686-fedora.config
-> kernel-i686-fedora.config.${CONFIG_VER}
)"
S=${WORKDIR}/${MY_P}
LICENSE="GPL-2"
KEYWORDS="amd64 ~arm arm64 ~ppc ppc64 ~x86"
IUSE="debug hardened"
REQUIRED_USE="arm? ( savedconfig )"
RDEPEND="
!sys-kernel/gentoo-kernel-bin:${SLOT}"
BDEPEND="
debug? ( dev-util/pahole )"
PDEPEND="
>=virtual/dist-kernel-${PV}"
QA_FLAGS_IGNORED="
usr/src/linux-.*/scripts/gcc-plugins/.*.so
usr/src/linux-.*/vmlinux
usr/src/linux-.*/arch/powerpc/kernel/vdso.*/vdso.*.so.dbg
"
src_prepare() {
local PATCHES=(
# meh, genpatches have no directory
"${WORKDIR}"/*.patch
)
default
local biendian=false
# prepare the default config
case ${ARCH} in
amd64)
cp "${DISTDIR}/kernel-x86_64-fedora.config.${CONFIG_VER}" .config || die
;;
arm)
return
;;
arm64)
cp "${DISTDIR}/kernel-aarch64-fedora.config.${CONFIG_VER}" .config || die
biendian=true
;;
ppc)
# assume powermac/powerbook defconfig
# we still package.use.force savedconfig
cp "${WORKDIR}"/linux-*/arch/powerpc/configs/pmac32_defconfig .config || die
;;
ppc64)
cp "${DISTDIR}/kernel-ppc64le-fedora.config.${CONFIG_VER}" .config || die
biendian=true
;;
x86)
cp "${DISTDIR}/kernel-i686-fedora.config.${CONFIG_VER}" .config || die
;;
*)
die "Unsupported arch ${ARCH}"
;;
esac
local myversion="-gentoo-dist"
use hardened && myversion+="-hardened"
echo "CONFIG_LOCALVERSION=\"${myversion}\"" > "${T}"/version.config || die
local dist_conf_path="${WORKDIR}/gentoo-kernel-config-${GENTOO_CONFIG_VER}"
local merge_configs=(
"${T}"/version.config
"${dist_conf_path}"/base.config
)
use debug || merge_configs+=(
"${dist_conf_path}"/no-debug.config
)
if use hardened; then
merge_configs+=( "${dist_conf_path}"/hardened-base.config )
tc-is-gcc && merge_configs+=( "${dist_conf_path}"/hardened-gcc-plugins.config )
if [[ -f "${dist_conf_path}/hardened-${ARCH}.config" ]]; then
merge_configs+=( "${dist_conf_path}/hardened-${ARCH}.config" )
fi
fi
# this covers ppc64 and aarch64_be only for now
if [[ ${biendian} == true && $(tc-endian) == big ]]; then
merge_configs+=( "${dist_conf_path}/big-endian.config" )
fi
kernel-build_merge_configs "${merge_configs[@]}"
}
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