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File PKGBUILD of Package linux-cjktty

# Compile ONLY used modules to VASTLY reduce the number of modules built
# and the build time.
#
# To keep track of which modules are needed for your specific system/hardware,
# give module_db script a try: https://aur.archlinux.org/packages/modprobed-db
# This PKGBUILD read the database kept if it exists
#
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed-db
if [ -z ${_localmodcfg} ]; then
  _localmodcfg=n
fi

# Tweak kernel options prior to a build via nconfig
if [ -z ${_makenconfig} ]; then
  _makenconfig=n
fi

pkgname=(
  "linux-cjktty"
  "linux-cjktty-headers"
)
pkgbase=linux-cjktty
_major=6.9
pkgver=${_major}.5.arch1
_branch=6.x
pkgrel=1
pkgdesc='Linux patched with cjktty'
url='https://github.com/archlinux/linux'
arch=(x86_64)
license=(GPL-2.0-only)
makedepends=(
  bc
  cpio
  gettext
  libelf
  pahole
  perl
  python
  tar
  xz
)
options=(
  !debug
  !strip
)
_srcname=linux-${pkgver%.*}
_srctag=v${pkgver%.*}-${pkgver##*.}
source=(
  https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/${_srcname}.tar.xz
  $url/releases/download/$_srctag/linux-$_srctag.patch.zst
  config # the main kernel config file
  cjktty.patch::https://github.com/zhmars/cjktty-patches/raw/master/v${_branch}/cjktty-6.7.patch
)

b2sums=('a120ee2517ff9bdc164a55cbd78929b545d77d8f3b4d09e8903ea9c2f1a85ef837b079524dd465b3f0cf268ee1f6db5166ccb5676ac67b31bca1927ea0a6997b'
        'fcc4a45448386f158b20487035037e03694901b63d77a3ce92906f5f7faaaf36346e540bebdb035f8fb42647632efa6d452d2fb52c97996bda81c3032d9fa055'
        '59275c61c530d0bafb3866402d538fc8b4be0c88193bcaf6b378e88fa1fc9bf93a87dd73d7d4defb660b054403fa246fbcca14510fa7b36d71918cb5820ce10e'
        '8e08152d7413fbd00f71e5f09c680ad7b6b4f8bdfbd56b07659ea7ce54a7d738b73c0fa240f3c90133d4cb2e566be94ffaad5ba1ffddbd4dff99ea6587c44b42')

export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"

prepare() {
  cd $_srcname

echo "Setting version..."
  echo "-$pkgrel" >localversion.10-pkgrel
  echo "${pkgbase#linux}" >localversion.20-pkgname

local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    src="${src%.zst}"
    [[ $src = *.patch ]] || continue
    echo "Applying patch $src..."
    patch -Np1 <"../$src"
  done

echo "Setting config..."
  cp ../config .config

### Optionally load needed modules for the make localmodconfig
  # See https://aur.archlinux.org/packages/modprobed-db
  if [ "$_localmodcfg" = "y" ]; then
    if [ -f $HOME/.config/modprobed.db ]; then
      msg2 "Running Steven Rostedt's make localmodconfig now"
      make ${_compiler_flags} LSMOD=$HOME/.config/modprobed.db localmodconfig
    else
      msg2 "No modprobed.db data found"
      exit 1
    fi
  fi

make olddefconfig
  diff -u ../config .config || :

make -s kernelrelease >version
  echo "Prepared $pkgbase version $(<version)"

if [ "$_makenconfig" = "y" ]; then
    make ${_compiler_flags} nconfig
  fi
}

build() {
  cd $_srcname
  make -j$(nproc) all
  make -j$(nproc) -C tools/bpf/bpftool vmlinux.h feature-clang-bpf-co-re=1
}

_package() {
  pkgdesc="The $pkgdesc kernel and modules"
  depends=(
    coreutils
    initramfs
    kmod
  )
  optdepends=(
    'wireless-regdb: to set the correct wireless channels of your country'
    'linux-firmware: firmware images needed for some devices'
  )
  provides=(
    KSMBD-MODULE
    VIRTUALBOX-GUEST-MODULES
    WIREGUARD-MODULE
  )
  replaces=(
    virtualbox-guest-modules-arch
    wireguard-arch
  )

cd $_srcname
  local modulesdir="$pkgdir/usr/lib/modules/$(<version)"

echo "Installing boot image..."
  # systemd expects to find the kernel here to allow hibernation
  # https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
  install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"

# Used by mkinitcpio to name the kernel
  echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"

echo "Installing modules..."
  ZSTD_CLEVEL=19 make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
    DEPMOD=/doesnt/exist modules_install # Suppress depmod

# remove build link
  rm "$modulesdir"/build
}

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
  depends=(pahole)

cd $_srcname
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

echo "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux tools/bpf/bpftool/vmlinux.h
  install -Dt "$builddir/kernel" -m644 kernel/Makefile
  install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
  cp -t "$builddir" -a scripts

# required when STACK_VALIDATION is enabled
  install -Dt "$builddir/tools/objtool" tools/objtool/objtool

# required when DEBUG_INFO_BTF_MODULES is enabled
  install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids

echo "Installing headers..."
  cp -t "$builddir" -a include
  cp -t "$builddir/arch/x86" -a arch/x86/include
  install -Dt "$builddir/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s

install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
  install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h

# https://bugs.archlinux.org/task/13146
  install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h

# https://bugs.archlinux.org/task/20402
  install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
  install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
  install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h

# https://bugs.archlinux.org/task/71392
  install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h

echo "Installing KConfig files..."
  find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

echo "Removing unneeded architectures..."
  local arch
  for arch in "$builddir"/arch/*/; do
    [[ $arch = */x86/ ]] && continue
    echo "Removing $(basename "$arch")"
    rm -r "$arch"
  done

echo "Removing documentation..."
  rm -r "$builddir/Documentation"

echo "Removing broken symlinks..."
  find -L "$builddir" -type l -printf 'Removing %P\n' -delete

echo "Removing loose objects..."
  find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

echo "Stripping build tools..."
  local file
  while read -rd '' file; do
    case "$(file -Sib "$file")" in
    application/x-sharedlib\;*) # Libraries (.so)
      strip -v $STRIP_SHARED "$file" ;;
    application/x-archive\;*) # Libraries (.a)
      strip -v $STRIP_STATIC "$file" ;;
    application/x-executable\;*) # Binaries
      strip -v $STRIP_BINARIES "$file" ;;
    application/x-pie-executable\;*) # Relocatable binaries
      strip -v $STRIP_SHARED "$file" ;;
    esac
  done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)

echo "Stripping vmlinux..."
  strip -v $STRIP_STATIC "$builddir/vmlinux"

echo "Adding symlink..."
  mkdir -p "$pkgdir/usr/src"
  ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}

for _p in "${pkgname[@]}"; do
  eval "package_$_p() {
    $(declare -f "_package${_p#$pkgbase}")
    _package${_p#$pkgbase}
  }"
done

# vim:set ts=8 sts=2 sw=2 et:

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