# Maintainer: NobodyDBG <niemandausduisburg@gmx.net>

pkgbase=linux-vanilla-selinux-419
pkgname=linux-vanilla-selinux-419
pkgver=4.19.159
pkgrel=1
pkgdesc="Vanilla-Linux-Kernel (4.19) from kernel.org with Selinux enabled."
arch=('x86_64')
url="https://www.kernel.org/"
license=('GPL2')
makedepends=(bc kmod libelf
  xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick
  git)
options=('!strip')
_srcname=linux-vailla-selinux-419${pkgver}
_origsrcname=linux-${pkgver}
source=(https://www.kernel.org/pub/linux/kernel/v4.x/${_origsrcname}.tar.{xz,sign}
        'config'         # the main kernel config file
        'linux-vanilla-selinux-419.install' # Installfile
        '60-linux.hook'  # pacman hook for depmod
        '90-linux.hook'  # pacman hook for initramfs regeneration
        'linux-vanilla-selinux-419.preset'   # standard config files for mkinitcpio ramdisk
        'sphinx-workaround.patch' # patch for Sphinx HTMLDOCS
)
validpgpkeys=('ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds <torvalds@linux-foundation.org>
              '647F28654894E3BD457199BE38DBBDC86092693E' # Greg Kroah-Hartman (Linux kernel stable release signing key) <greg@kroah.com>
              )
# https://www.kernel.org/pub/linux/kernel/v4.x/sha256sums.asc
sha256sums=('60cb0bdb79ef76063ad6d99c5945164200fa82b2e1cc0c509d42e99ff2a6b0a4'
            'bd0861213999f862678fca8283215204ce2b9693052b2042b872ae718f00e8f6'
	    '9e20ecea75ea42016f6c730805ba92f8885ee8a677b8f617d1a3864c86432f6a'
            'f9b13f3c00be95205ccb77ead42881ecbf0f7ba0d0ad12af294e054272859d81'
            '5c7af03d9b4cade110543ba706bcbd49fc6447726258b4bfec0edff7ca9994d1'
            '9089c8d44982dc03b0dde47632f8aa2fda14754b911acbc266feee85da94b0f5'
            'ad6344badc91ad0630caacde83f7f9b97276f80d26a20619a87952be65492c65'
            '4befd6244fd1e933519f7e589aa4dc24639500e3e911620636be5e0c0aa5f719')

_kernelname=${pkgbase#}
: ${_kernelname:=-Arch-vanilla-selinux-419}

prepare() {
  cd $_origsrcname

  msg2 "Setting version..."
  scripts/setlocalversion --save-scmversion
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "$_kernelname" > localversion.20-pkgname

  local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    [[ $src = *.patch ]] || continue
    msg2 "Applying patch $src..."
    patch -Np1 < "../$src"
  done

  msg2 "Setting config..."
  cp ../config .config
  make olddefconfig

  make -s kernelrelease > version
  msg2 "Prepared %s version %s" "$pkgbase" "$(<version)"

  # save configuration for later reuse
  cat .config > "${startdir}/config.last"
}

build() {
  cd $_origsrcname
  make all
  make htmldocs
}

_package() {
  pkgdesc="The ${pkgbase/linux/Linux} kernel and modules"
  depends=(coreutils kmod initramfs)
  optdepends=('crda: to set the correct wireless channels of your country'
              'linux-firmware: firmware images needed for some devices')
  backup=("etc/mkinitcpio.d/$pkgbase.preset")
  install=$pkgbase.install

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

  msg2 "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"
  install -Dm644 "$modulesdir/vmlinuz" "$pkgdir/boot/vmlinuz-$pkgbase"

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

  msg2 "Installing modules..."
  make INSTALL_MOD_PATH="$pkgdir/usr" modules_install

  # remove build and source links
  rm "$modulesdir"/{source,build}

  msg2 "Installing hooks..."
  # sed expression for following substitutions
  local subst="
    s|%PKGBASE%|$pkgbase|g
    s|%KERNVER%|$kernver|g
  "

  # hack to allow specifying an initially nonexisting install file
  sed "$subst" "$startdir/$install" > "$startdir/$install.pkg"
  true && install=$install.pkg

  # fill in mkinitcpio preset and pacman hooks
  sed "$subst" ../$pkgbase.preset | install -Dm644 /dev/stdin \
    "$pkgdir/etc/mkinitcpio.d/$pkgbase.preset"
  sed "$subst" ../60-linux.hook | install -Dm644 /dev/stdin \
    "$pkgdir/usr/share/libalpm/hooks/60-$pkgbase.hook"
  sed "$subst" ../90-linux.hook | install -Dm644 /dev/stdin \
    "$pkgdir/usr/share/libalpm/hooks/90-$pkgbase.hook"

  msg2 "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

_package-headers() {
  pkgdesc="Header files and scripts for building modules for ${pkgbase/linux/Linux} kernel"

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

  msg2 "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux
  install -Dt "$builddir/kernel" -m644 kernel/Makefile
  install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
  cp -t "$builddir" -a scripts

  # add objtool for external module building and enabled VALIDATION_STACK option
  install -Dt "$builddir/tools/objtool" tools/objtool/objtool

  # add xfs and shmem for aufs building
  mkdir -p "$builddir"/{fs/xfs,mm}

  # this is gone in v5.3
  mkdir "$builddir/.tmp_versions"

  msg2 "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

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

  # http://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

  msg2 "Installing KConfig files..."
  find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

  msg2 "Removing unneeded architectures..."
  local arch
  for arch in "$builddir"/arch/*/; do
    [[ $arch = */x86/ ]] && continue
    echo "Removing $(basename "$arch")"
    rm -r "$arch"
  done

  msg2 "Removing documentation..."
  rm -r "$builddir/Documentation"

  msg2 "Removing broken symlinks..."
  find -L "$builddir" -type l -printf 'Removing %P\n' -delete

  msg2 "Removing loose objects..."
  find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

  msg2 "Stripping build tools..."
  local file
  while read -rd '' file; do
    case "$(file -bi "$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)

  msg2 "Adding symlink..."
  mkdir -p "$pkgdir/usr/src"
  ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"

  msg2 "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

_package-docs() {
  pkgdesc="Kernel hackers manual - HTML documentation that comes with the ${pkgbase/linux/Linux} kernel"

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

  msg2 "Installing documentation..."
  mkdir -p "$builddir"
  cp -t "$builddir" -a Documentation

  msg2 "Removing doctrees..."
  rm -r "$builddir/Documentation/output/.doctrees"

  msg2 "Moving HTML docs..."
  local src dst
  while read -rd '' src; do
    dst="$builddir/Documentation/${src#$builddir/Documentation/output/}"
    mkdir -p "${dst%/*}"
    mv "$src" "$dst"
    rmdir -p --ignore-fail-on-non-empty "${src%/*}"
  done < <(find "$builddir/Documentation/output" -type f -print0)

  msg2 "Adding symlink..."
  mkdir -p "$pkgdir/usr/share/doc"
  ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"

  msg2 "Fixing permissions..."
  chmod -Rc u=rwX,go=rX "$pkgdir"
}

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