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# Copyright 2020-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit dist-kernel-utils toolchain-funcs verify-sig
BASE_P=linux-${PV%.*}
PATCH_PV=${PV%_p*}
PATCHSET=linux-gentoo-patches-6.6.145
SHA256SUM_DATE=20260914
DESCRIPTION="Minimal subset of gentoo-kernel-bin for building modules, for containers"
HOMEPAGE="
https://wiki.gentoo.org/wiki/Project:Distribution_Kernel
https://www.kernel.org/
"
SRC_URI+="
https://cdn.kernel.org/pub/linux/kernel/v$(ver_cut 1).x/${BASE_P}.tar.xz
https://cdn.kernel.org/pub/linux/kernel/v$(ver_cut 1).x/patch-${PATCH_PV}.xz
https://distfiles.gentoo.org/pub/proj/dist-kernel/patchsets/$(ver_cut 1-2)/${PATCHSET}.tar.xz
https://distfiles.gentoo.org/pub/proj/dist-kernel/binpkg/modprep/$(ver_cut 1-2)/${P}.tar.xz
verify-sig? (
https://cdn.kernel.org/pub/linux/kernel/v$(ver_cut 1).x/sha256sums.asc
-> linux-$(ver_cut 1).x-sha256sums-${SHA256SUM_DATE}.asc
)
"
S=${WORKDIR}
LICENSE="GPL-2"
SLOT=${PV}
KEYWORDS="amd64 arm64 ppc64 x86"
RDEPEND="
virtual/libelf
!sys-kernel/gentoo-kernel-bin:${SLOT}
"
PDEPEND="
>=virtual/dist-kernel-${PV}
"
BDEPEND="
app-alternatives/bc
app-alternatives/lex
app-alternatives/yacc
dev-util/pahole
virtual/libelf
verify-sig? ( >=sec-keys/openpgp-keys-kernel-20250702 )
"
KV_LOCALVERSION='-gentoo-dist-bin'
KV_FULL=${PV/_p/-p}${KV_LOCALVERSION}
VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/kernel.org.asc
src_unpack() {
if use verify-sig; then
cd "${DISTDIR}" || die
verify-sig_verify_signed_checksums \
"linux-$(ver_cut 1).x-sha256sums-${SHA256SUM_DATE}.asc" \
sha256 "${BASE_P}.tar.xz patch-${PATCH_PV}.xz"
cd "${WORKDIR}" || die
fi
unpack "${BASE_P}.tar.xz" "patch-${PATCH_PV}.xz" "${PATCHSET}.tar.xz"
local pkg_arch=${ARCH}
[[ ${ARCH} == ppc64 ]] && pkg_arch=ppc64le
tar -x -f "${DISTDIR}/${P}.tar.xz" "${P}/${pkg_arch}" || die
}
src_prepare() {
local patch
cd "${BASE_P}" || die
eapply "${WORKDIR}/patch-${PATCH_PV}"
eapply "${WORKDIR}/${PATCHSET}"
default
# add Gentoo patchset version
local extraversion=${PV#${PATCH_PV}}
sed -i -e "s:^\(EXTRAVERSION =\).*:\1 ${extraversion/_/-}:" Makefile || die
}
src_configure() {
# force ld.bfd if we can find it easily
local HOSTLD="$(tc-getBUILD_LD)"
if type -P "${HOSTLD}.bfd" &>/dev/null; then
HOSTLD+=.bfd
fi
local LD="$(tc-getLD)"
if type -P "${LD}.bfd" &>/dev/null; then
LD+=.bfd
fi
tc-export_build_env
local makeargs=(
V=1
WERROR=0
HOSTCC="$(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="${WORKDIR}"/modprep
)
local kernel_dir=( "${P}"/*/usr/src/"linux-${KV_FULL}" )
mkdir modprep || die
cp "${kernel_dir}/.config" modprep/ || die
emake -C "${BASE_P}" "${makeargs[@]}" modules_prepare
}
src_install() {
local rel_kernel_dir=/usr/src/linux-${KV_FULL}
local pkg_dir=( "${P}"/* )
local kernel_dir="${pkg_dir}/usr/src/linux-${KV_FULL}"
local image="${kernel_dir}/$(dist-kernel_get_image_path)"
local uki="${image%/*}/uki.efi"
mv "${pkg_dir}"/lib "${ED}"/ || die
cd "${kernel_dir}" || die
insinto "${rel_kernel_dir}"
doins System.map Module.symvers
doins -r certs include scripts
local kern_arch=$(tc-arch-kernel)
insinto "${rel_kernel_dir}/arch/${kern_arch}"
doins -r "arch/${kern_arch}/include"
# Add the identifier
echo "${CATEGORY}/${PF}:${SLOT}" > "${ED}${rel_kernel_dir}/dist-kernel" || die
cd "${WORKDIR}/${BASE_P}" || die
insinto "${rel_kernel_dir}"
doins -r include
# remove everything but Makefile* and Kconfig*
find -type f '!' '(' -name 'Makefile*' -o -name 'Kconfig*' ')' \
-delete || die
find -type l -delete || die
cp -p -R * "${ED}${rel_kernel_dir}/" || die
# strip out-of-source build stuffs from modprep
# and then copy built files
cd "${WORKDIR}" || die
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/. "${ED}${rel_kernel_dir}"/ || die
}
pkg_preinst() {
dist-kernel_update_lib_symlinks
}
pkg_postinst() {
dist-kernel_update_src_symlink "${EROOT}/usr/src/linux" "${KV_FULL}"
}
|
