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# Maintainer: Gabor Pali <pali.gabor@gmail.com>
pkgname=linux-lts
pkgver=6.1.53
case $pkgver in
*.*.*) _kernver=${pkgver%.*};;
*.*) _kernver=$pkgver;;
esac
pkgrel=0
pkgdesc="Linux LTS kernel"
url="https://www.kernel.org"
depends=
_depends_dev="perl gmp-dev mpc1-dev mpfr-dev elfutils-dev bash flex bison zstd"
makedepends="$_depends_dev sed installkernel bc linux-headers linux-firmware-any openssl-dev>3 mawk
diffutils findutils zstd pahole>=1.25 python3"
options="!strip"
install=
source="https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/linux-$_kernver.tar.xz
awk.patch
config-lts.x86_64
"
subpackages="$pkgname-dev:_dev:$CBUILD_ARCH"
builddir="$srcdir"/linux-"$_kernver"
if [ "${pkgver%.0}" = "$pkgver" ]; then
source="$source
https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/patch-$pkgver.xz"
fi
arch="x86_64"
license="GPL-2.0-only"
prepare() {
if [ "$_kernver" != "$pkgver" ]; then
msg "Applying patch-$pkgver.xz"
unxz -c < "$srcdir"/patch-$pkgver.xz | patch -p1 -N
fi
default_prepare
# remove localversion from patch if any
rm -f localversion*
}
_prepareconfig() {
local _config="config-lts.x86_64"
local _builddir="$srcdir"/build-lts.x86_64
mkdir -p "$_builddir"
echo "-$pkgrel-lts" > "$_builddir"/localversion-alpine
cp "$srcdir"/"$_config" "$_builddir"/.config
msg "Configuring the kernel"
make -C "$srcdir"/linux-"$_kernver" \
O="$_builddir" \
ARCH=x86_64 \
olddefconfig
}
build() {
unset LDFLAGS
# for some reason these sometimes leak into the kernel build,
# -Werror=format-security breaks some stuff
unset CFLAGS CPPFLAGS CXXFLAGS
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"
_prepareconfig
msg "Building the kernel"
cd "$srcdir"/build-lts.x86_64
make ARCH="x86_64" \
CC="${CC:-gcc}" \
AWK="${AWK:-mawk}" \
KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine"
}
package() {
local _outdir="$pkgdir"
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"
cd "$srcdir"/build-lts.x86_64
local _abi_release="$(make -s kernelrelease)"
# modules_install seems to regenerate a defect Modules.symvers on s390x. Work
# around it by backing it up and restore it after modules_install
cp Module.symvers Module.symvers.backup
mkdir -p "$_outdir"/boot "$_outdir"/lib/modules
make modules_install install \
ARCH="x86_64" \
INSTALL_MOD_PATH="$_outdir" \
INSTALL_MOD_STRIP=1 \
INSTALL_PATH="$_outdir"/boot \
INSTALL_DTBS_PATH="$_outdir/boot/dtbs-lts"
cp Module.symvers.backup Module.symvers
rm -f "$_outdir"/lib/modules/"$_abi_release"/build \
"$_outdir"/lib/modules/"$_abi_release"/source \
"$_outdir"/boot/System.map-lts \
"$_outdir"/boot/config-lts
rm -rf "$_outdir"/lib/firmware
}
_dev() {
local _builddir="$srcdir"/build-lts.x86_64
local _abi_release="$(make -C "$_builddir" -s kernelrelease)"
# copy the only the parts that we really need for build 3rd party
# kernel modules and install those as /usr/src/linux-headers,
# simlar to what ubuntu does
#
# this way you dont need to install the 300-400 kernel sources to
# build a tiny kernel module
#
pkgdesc="Headers and script for third party modules for lts kernel"
depends="$_depends_dev"
local dir="$subpkgdir"/usr/src/linux-headers-"$_abi_release"
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"
# first we import config, run prepare to set up for building
# external modules, and create the scripts
mkdir -p "$dir"
cp -a "$_builddir"/.config "$_builddir"/localversion-alpine \
"$dir"/
make -C "$srcdir"/linux-"$_kernver" \
O="$dir" \
ARCH="x86_64" \
AWK="${AWK:-mawk}" \
prepare modules_prepare scripts
# remove the stuff that points to real sources. we want 3rd party
# modules to believe this is the soruces
rm "$dir"/Makefile "$dir"/source
# copy the needed stuff from real sources
#
# this is taken from ubuntu kernel build script
# http://kernel.ubuntu.com/git/ubuntu/ubuntu-zesty.git/tree/debian/rules.d/3-binary-indep.mk
cd "$srcdir"/linux-"$_kernver"
find . -path './include/*' -prune \
-o -path './scripts/*' -prune -o -type f \
\( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
-name '*.sh' -o -name '*.pl' -o -name '*.lds' -o -name 'Platform' \) \
-print | cpio -pdm "$dir"
cp -a scripts include "$dir"
find arch/x86 -name include -type d -print | while IFS='' read -r folder; do
find "$folder" -type f
done | sort -u | cpio -pdm "$dir"
install -Dm644 "$srcdir"/build-lts.$CARCH/Module.symvers \
"$dir"/Module.symvers
# remove unneeded things
msg "Removing documentation..."
rm -rf "$dir"/Documentation
find "$dir" -type f -name '*.o' -printf 'Removing %P\n' -delete
mkdir -p "$subpkgdir"/lib/modules/"$_abi_release"
ln -sf /usr/src/linux-headers-"$_abi_release" \
"$subpkgdir"/lib/modules/"$_abi_release"/build
}
sha512sums="
6ed2a73c2699d0810e54753715635736fc370288ad5ce95c594f2379959b0e418665cd71bc512a0273fe226fe90074d8b10d14c209080a6466498417a4fdda68 linux-6.1.tar.xz
3816cfc8dd14d1c5ced05bbf19b099472c9bbbd1abced32cbb4b6b5baecfaa28c345e4e522648837d98e5bc7c311810cae9160f4c91019bb857a3857076b8e0e awk.patch
4084cfdfca1a3dd85816be4f59c30f0f6f8e007ce2a063d11385a841d879dc096b0ab60e2ef36e0ef9ea7dbe60aa03a84bbbd7a369cd4a4c3a2433f034ebde2a config-lts.x86_64
b5442dead51ac824dde986f08a62371e94a6743f7d27ed40410a30d2da9e31602068a8929cc693a15b7b2d41d23e09e702f2ddd5e0485ec1bbf5750765eba2e0 patch-6.1.53.xz
"
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