slackbuilds/a/kernel-gwh/SlackBuild

#!/bin/sh

set -e

CWD=$(pwd)

PRGNAM=$(basename $CWD)-$(hostname -s)
BUILD=${BUILD:-1}
BRANCH=${BRANCH:-stable}        # stable ; mainline
ARCH=$(uname -m)

TAG=gwh
TMP=/tmp/$TAG
PKG=$TMP/pkg-$PRGNAM
OUTPUT=/tmp

NUMJOBS=${NUMJOBS:-" -j4 "}

GIT=${GIT:-"NO"}

rm -fr $PKG

VERSION=${VERSION:-$(curl https://www.kernel.org/feeds/kdist.xml | grep -o "[0-9.rc-]*: $BRANCH" | head -n1 | cut -d: -f1)}

if [ $BRANCH == "stable" ]; then
    SRC_URL="https://cdn.kernel.org/pub/linux/kernel/v$(echo $VERSION | cut -d. -f1).x"
else
    SRC_URL="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/snapshot"
fi
[ ! -e $CWD/linux-$VERSION.tar.?z* ] && wget -c "$SRC_URL/linux-$VERSION.tar.gz" -O $CWD/linux-$VERSION.tar.gz
mkdir -p $PKG/usr/src/
tar xf $CWD/linux-$VERSION.tar.gz -C $PKG/usr/src/

cd $PKG/usr/src/linux-$VERSION

if [ -e $CWD/config-$VERSION ] ; then
    cp $CWD/config-$VERSION .config
else
    if [ -e $CWD/config ]; then
        cp $CWD/config .config
    else
        zcat /proc/config.gz > .config
    fi
fi

make oldconfig $*

make $NUMJOBS
if [[ "$ARCH" == "aarch64" ]]; then
    make dtbs
    make dtbs_install INSTALL_DTBS_PATH=$PKG/boot/dtb
fi
make modules_install INSTALL_MOD_PATH=$PKG

VERSION=$(basename $(ls $PKG/lib/modules/ | head -n1))

mkdir -p $PKG/install
mkdir -p $PKG/boot/
cp System.map $PKG/boot/System.map-gwh-$VERSION
cp .config $PKG/boot/config-gwh-$VERSION
if [[ "$ARCH" == "aarch64" ]]; then
    cp arch/arm64/boot/Image $PKG/boot/vmlinux-gwh-$VERSION
    ( cd $PKG/boot/
      ln -s vmlinux-gwh-$VERSION vmlinux-gwh
    )
    cat <<EOF > $PKG/install/doinst.sh
[ -e /boot/Image ] && mv /boot/Image /boot/Image.old
cp /boot/vmlinux-gwh-$VERSION /boot/Image
eval \$(/usr/share/mkinitrd/mkinitrd_command_generator.sh -k $VERSION -r )
cp /boot/initrd.gz /boot/initrd-gwh.gz
EOF
else
    cp arch/${ARCH}/boot/bzImage $PKG/boot/vmlinuz-gwh-$VERSION
    ( cd $PKG/boot/
      ln -s vmlinuz-gwh-$VERSION vmlinuz-gwh
    )

    cat <<EOF > $PKG/install/doinst.sh
cp /boot/elilo-x86_64.efi /boot/efi/EFI/Slackware/elilo.efi
cp /boot/vmlinuz-gwh-$VERSION /boot/efi/EFI/Slackware/vmlinuz-gwh
cp /boot/intel-ucode.cpio /boot/efi/EFI/Slackware/

eval \$(/usr/share/mkinitrd/mkinitrd_command_generator.sh -a '-P /boot/intel-ucode.cpio' -k $VERSION -r -m crc32-pclmul:crc32c-intel:crc32_generic\$(lspci | grep -iq radeon && echo ':amdgpu:radeon'))
cp /boot/initrd.gz /boot/efi/EFI/Slackware/initrd-gwh.gz
EOF
fi

make clean

cat <<EOF > $PKG/install/slack-desc
$PRGNAM: $PRGNAM (kernel)
$PRGNAM:
$PRGNAM: Linux is a clone of the operating system Unix, written from scratch by
$PRGNAM: Linus Torvalds with assistance from a loosely-knit team of hackers
$PRGNAM: across the Net. It aims towards POSIX and Single UNIX Specification
$PRGNAM: compliance.
$PRGNAM:
$PRGNAM: It has all the features you would expect in a modern fully-fledged Unix
$PRGNAM:
$PRGNAM: http://www.kernel.org
$PRGNAM:
EOF

cd $PKG
rm -f $PKG/{,usr/}lib$(uname -m | grep -o 64)/*.la
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$(echo $VERSION | tr - _)-$ARCH-$BUILD$TAG.txz