# Maintainer: graysky <graysky AT archlinux DOT us>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>

pkgbase=linux-rc
pkgrel=1
_srcname=linux-5.5
_major=5.5
### on initial release this is null otherwise it is the current stable subversion
### ie 1,2,3 corresponding $_major.1, $_major.3 etc.
_minor=8
### on initial release comment this out and set to =1
_minorc=$((_minor+1))
#_minorc=1
### on initial release this is just $_major
_fullver=$_major.$_minor
#_fullver=$_major
_rcver=1
_rcpatch=patch-${_major}.${_minorc}-rc${_rcver}
pkgver=${_major}.${_minorc}rc${_rcver}
arch=(x86_64)
license=(GPL2)
url="https://www.kernel.org/"
makedepends=(
       kmod inetutils bc libelf
)
options=('!strip')
source=(
  https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/"$_rcpatch".{xz,sign}
  # https://lkml.org/lkml/2019/8/23/712
  # "$_rcpatch.patch::https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/patch/?id=$_srcname.y&id2=v${_major}.${_minor}"
  https://www.kernel.org/pub/linux/kernel/v5.x/linux-$_fullver.tar.{xz,sign}
  config         # the main kernel config file
  0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
0002-iwlwifi-pcie-restore-support-for-Killer-Qu-C0-NICs.patch
0003-iwlwifi-mvm-Do-not-require-PHY_SKU-NVM-section-for-3.patch
0004-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch
0005-drm-i915-Serialise-i915_active_acquire-with-__active.patch
0006-drm-i915-gem-Take-runtime-pm-wakeref-prior-to-unbind.patch
0007-drm-i915-gem-Avoid-parking-the-vma-as-we-unbind.patch
0008-drm-i915-gem-Try-to-flush-pending-unbind-events.patch
0009-drm-i915-gem-Reinitialise-the-local-list-before-repe.patch
0010-drm-i915-Add-a-simple-is-bound-check-before-unbindin.patch
0011-drm-i915-Introduce-a-vma.kref.patch
)
validpgpkeys=(
  'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
  '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
)
sha256sums=('4eb5b407e56b35338d621a2a59b554525275bb98ae1a1064ce6c58b7228d7b78'
            'SKIP'
            'e5b6f6938e99a39fb359618e92349ca4e2cd9db31e1b81b7d14d2fa7dc03fc06'
            'SKIP'
            'a841aa011edf6bae0ffbe8ead8177e5056de5a6d7333bb96e16917903de4d868'
            'd4412be5c95843577937534051571d852690b01e1e21ffed36c1aeb91e728bcf'
            '83af12e6073856d1557c439c8f96fc14af3ff202e5a2bdeb3fcecb01f0db6672'
            '0e1b524d287a1b7415eab644e4add083f3e2649175af551d0646c81e822c2bb0'
            '92404a0534c5934d73420408707f474b151e2e01e4bbf8ad7141c55274e88aef'
            '83bc4c6d7fdf8b37a3804eef8bb4a6d44302fa2cabea40512859fa956eb78769'
            '6b1d8ec648f4e37d358d369bc2e20072a6d445234580dcfe2320df0dc24087d1'
            'ed325f82071216c966008a8cffb3437c6561736418e4cd643abdf49bfed6e44c'
            'b5e47e45d2fdaec040c6a7c28e9122408a539d5b2202f909bd94b0e5c158640d'
            'd1fd21ccd8c4aaf35aa22abe26950132fd9dc4b69ee65908a69ca9c7a437fa16'
            '8c39a418e20934b60801885b76376bfdabd2b1dcf514762eff831d7138ca6b04'
            'ff775e9b89dd08567f8b8fab65940b1a848b1bb4e67c4b280ed4f977fa5c96b2')

_kernelname=${pkgbase#linux}

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 linux-${_fullver}

  echo "Setting version..."
  scripts/setlocalversion --save-scmversion
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "${pkgbase#linux}" > localversion.20-pkgname

  echo "Applying $_rcpatch..."
  patch -Np1 <"../$_rcpatch"

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

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

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

build() {
  cd linux-${_fullver}

  make bzImage modules
}

_package() {
  pkgdesc="The release candidate 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')

  cd linux-${_fullver}
  local kernver="$(<version)"
  local modulesdir="$pkgdir/usr/lib/modules/$kernver"

  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..."
  make INSTALL_MOD_PATH="$pkgdir/usr" modules_install

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

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

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the linux-rc kernel"

  cd linux-${_fullver}
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

  echo "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux
  install -Dt "$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}

  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

  # 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

  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 "$(file -bi "$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)

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

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

pkgname=("$pkgbase" "$pkgbase-headers")
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: