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build/pkg/linux-lts/build

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VERSION="4.19.57"
SRCDIR="linux-$VERSION"
TARBALL="linux-$VERSION.tar.xz"
URL="https://www.kernel.org/pub/linux/kernel/v4.x"
SHA256SUM="327c5759d5888361d6c9d6adb0c8ad7e3c624eb05bb9e5869d9f3078dd0d3f87"
DEPENDS="initrd"
SUBPKG="linux linux-modules"
get_linux_cpu() {
case "$TARGET" in
i*86-*)
echo "x86"
;;
x86_64-*)
echo "x86_64"
;;
arm-*)
echo "arm"
;;
*)
echo "don't know how to map $TARGET to Linux arch" >&2
exit 1
;;
esac
}
prepare() {
return
}
build() {
local INITRDDIR="$PKGDEPLOYDIR/initrd"
local INITRDLIST="$INITRDDIR/initrd.list"
local LINUX_CPU=$(get_linux_cpu)
pkg install -omLD -r "$INITRDDIR" initrd
pkg install -r "$INITRDDIR" -l initrd initrd > "$INITRDLIST"
export KBUILD_OUTPUT="$PKGBUILDDIR"
make -C "$1" O="$PKGBUILDDIR" ARCH="$LINUX_CPU" CROSS_COMPILE="${TARGET}-" mrproper
cat_file_override "linux.config" > "$PKGBUILDDIR/.config"
sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_CROSS_COMPILE=.*,CONFIG_CROSS_COMPILE="'$TARGET'-",'
sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_INITRAMFS_SOURCE=.*,CONFIG_INITRAMFS_SOURCE="'$INITRDLIST'",'
sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_LOCALVERSION=.*,CONFIG_LOCALVERSION="-'${OS_NAME}-${OS_RELEASE}'",'
make -C "$1" O="$PKGBUILDDIR" ARCH="$LINUX_CPU" CROSS_COMPILE="${TARGET}-" oldconfig
make -C "$1" O="$PKGBUILDDIR" ARCH="$LINUX_CPU" CROSS_COMPILE="${TARGET}-" -j $NUMJOBS $LINUX_TGT
rm -rf "$INITRDDIR"
}
deploy() {
local SOURCE="$1"
local LINUX_CPU=$(get_linux_cpu)
local target
mkdir -p "$PKGDEPLOYDIR/boot" "$PKGDEPLOYDIR/lib/modules"
touch "$PKGDEPLOYDIR/linux.desc" "$PKGDEPLOYDIR/linux.files"
touch "$PKGDEPLOYDIR/linux-modules.desc"
touch "$PKGDEPLOYDIR/linux-modules.files"
for target in $LINUX_TGT; do
case $target in
*Image)
cp "arch/$LINUX_CPU/boot/$target" "$PKGDEPLOYDIR/vmlinuz"
echo "file vmlinuz 0755 0 0" > "$PKGDEPLOYDIR/linux.files"
;;
modules)
export KBUILD_OUTPUT="$PKGBUILDDIR"
make -C "$SOURCE" O="$PKGBUILDDIR" ARCH="$LINUX_CPU" CROSS_COMPILE="${TARGET}-" INSTALL_MOD_PATH="$PKGDEPLOYDIR" modules_install
echo "dir lib 0755 0 0" > "$PKGDEPLOYDIR/linux-modules.files"
pkg_scan_dir "$PKGDEPLOYDIR/lib" | \
sed "s#$PKGDEPLOYDIR/##g" \
>> "$PKGDEPLOYDIR/linux-modules.files"
;;
esac
done
}
check_update() {
curl --silent -L https://www.kernel.org/feeds/kdist.xml | \
grep -o "[0-9.]*: longterm" | grep -o "[0-9.]*" | \
verson_find_greatest "$VERSION"
}