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# Copyright 2020-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
KERNEL_EFI_ZBOOT=1
KERNEL_IUSE_GENERIC_UKI=1
KERNEL_IUSE_SECUREBOOT=1
inherit kernel-install toolchain-funcs unpacker
MY_P=linux-${PV%.*}
GENPATCHES_P=genpatches-${PV%.*}-$(( ${PV##*.} + 1 ))
BINPKG=${PF/-bin}-1
DESCRIPTION="Pre-built Linux kernel 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
amd64? (
https://dev.gentoo.org/~mgorny/binpkg/amd64/kernel/sys-kernel/gentoo-kernel/${BINPKG}.gpkg.tar
-> ${BINPKG/-2/-1}.amd64.gpkg.tar
)
arm64? (
https://dev.gentoo.org/~mgorny/binpkg/arm64/kernel/sys-kernel/gentoo-kernel/${BINPKG}.gpkg.tar
-> ${BINPKG}.arm64.gpkg.tar
)
ppc64? (
https://dev.gentoo.org/~mgorny/binpkg/ppc64le/kernel/sys-kernel/gentoo-kernel/${BINPKG}.gpkg.tar
-> ${BINPKG}.ppc64le.gpkg.tar
)
x86? (
https://dev.gentoo.org/~mgorny/binpkg/x86/kernel/sys-kernel/gentoo-kernel/${BINPKG}.gpkg.tar
-> ${BINPKG}.x86.gpkg.tar
)
"
S=${WORKDIR}
KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86"
RDEPEND="
!sys-kernel/gentoo-kernel:${SLOT}
"
PDEPEND="
>=virtual/dist-kernel-${PV}
"
BDEPEND="
app-alternatives/bc
app-alternatives/lex
dev-util/pahole
virtual/libelf
app-alternatives/yacc
"
QA_PREBUILT='*'
KV_LOCALVERSION='-gentoo-dist'
KPV=${PV}${KV_LOCALVERSION}
src_prepare() {
local PATCHES=(
# meh, genpatches have no directory
"${WORKDIR}"/*.patch
)
cd "${MY_P}" || die
default
}
src_configure() {
# force ld.bfd if we can find it easily
local HOSTLD="$(tc-getBUILD_LD)"
if type -P "${HOSTLD}.bfd" &>/dev/null; then
HOSTLD+=.bfd
fi
local LD="$(tc-getLD)"
if type -P "${LD}.bfd" &>/dev/null; then
LD+=.bfd
fi
tc-export_build_env
local makeargs=(
V=1
HOSTCC="$(tc-getBUILD_CC)"
HOSTCXX="$(tc-getBUILD_CXX)"
HOSTLD="${HOSTLD}"
HOSTAR="$(tc-getBUILD_AR)"
HOSTCFLAGS="${BUILD_CFLAGS}"
HOSTLDFLAGS="${BUILD_LDFLAGS}"
CROSS_COMPILE=${CHOST}-
AS="$(tc-getAS)"
CC="$(tc-getCC)"
LD="${LD}"
AR="$(tc-getAR)"
NM="$(tc-getNM)"
STRIP="$(tc-getSTRIP)"
OBJCOPY="$(tc-getOBJCOPY)"
OBJDUMP="$(tc-getOBJDUMP)"
READELF="$(tc-getREADELF)"
# we need to pass it to override colliding Gentoo envvar
ARCH="$(tc-arch-kernel)"
O="${WORKDIR}"/modprep
)
local kernel_dir="${BINPKG}/image/usr/src/linux-${KPV}"
local image="${kernel_dir}/$(dist-kernel_get_image_path)"
local uki="${image%/*}/uki.efi"
if [[ -s ${uki} ]]; then
# We need to extract the plain image for the test phase
# and USE=-generic-uki.
kernel-install_extract_from_uki linux "${uki}" "${image}"
fi
mkdir modprep || die
cp "${kernel_dir}/.config" modprep/ || die
emake -C "${MY_P}" "${makeargs[@]}" modules_prepare
}
src_test() {
local kernel_dir="${BINPKG}/image/usr/src/linux-${KPV}"
kernel-install_test "${KPV}" \
"${WORKDIR}/${kernel_dir}/$(dist-kernel_get_image_path)" \
"${BINPKG}/image/lib/modules/${KPV}"
}
src_install() {
local kernel_dir="${BINPKG}/image/usr/src/linux-${KPV}"
local image="${kernel_dir}/$(dist-kernel_get_image_path)"
local uki="${image%/*}/uki.efi"
if [[ -s ${uki} ]]; then
# Keep the kernel image type we don't want out of install tree
# Replace back with placeholder
if use generic-uki; then
> "${image}" || die
else
> "${uki}" || die
fi
fi
# Overwrite the identifier in the prebuilt package
echo "${CATEGORY}/${PF}:${SLOT}" > "${kernel_dir}/dist-kernel" || die
mv "${BINPKG}"/image/{lib,usr} "${ED}"/ || die
# FIXME: requires proper mount-boot
if [[ -d ${BINPKG}/image/boot/dtbs ]]; then
mv "${BINPKG}"/image/boot "${ED}"/ || die
fi
# strip out-of-source build stuffs from modprep
# and then copy built files
find modprep -type f '(' \
-name Makefile -o \
-name '*.[ao]' -o \
'(' -name '.*' -a -not -name '.config' ')' \
')' -delete || die
rm modprep/source || die
cp -p -R modprep/. "${ED}/usr/src/linux-${KPV}"/ || die
# Update timestamps on all modules to ensure cleanup works correctly
# when switching USE=modules-compress.
find "${ED}/lib" -name '*.ko' -exec touch {} + || die
# Modules were already stripped before signing
dostrip -x /lib/modules
kernel-install_compress_modules
}
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