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

pkgbase=linux-rc
pkgrel=2
_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, $_major.3 etc.
_minor=13
### on initial release comment this out and set to =1
_minorc=$((_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-drm-Remove-PageReserved-manipulation-from-drm_pci_al.patch
0004-drm-i915-Serialise-i915_active_acquire-with-__active.patch
0005-drm-i915-gem-Take-runtime-pm-wakeref-prior-to-unbind.patch
0006-drm-i915-gem-Avoid-parking-the-vma-as-we-unbind.patch
0007-drm-i915-gem-Try-to-flush-pending-unbind-events.patch
0008-drm-i915-gem-Reinitialise-the-local-list-before-repe.patch
0009-drm-i915-Add-a-simple-is-bound-check-before-unbindin.patch
0010-drm-i915-Introduce-a-vma.kref.patch
0011-iwlwifi-don-t-send-GEO_TX_POWER_LIMIT-if-no-wgds-tab.patch
0012-Revert-bpf-Provide-better-register-bounds-after-jmp3.patch
)
validpgpkeys=(
  'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
  '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
)
sha256sums=('3957619b036c50667d86775c039073d6005df188e34a0af2471b24751b2faed1'
            'SKIP'
            '1f3b3614a06bffc9c621c82f98d8ca88c60538a8c6dd77f96f2e7fee310a4ee2'
            'SKIP'
            'cefc4c5853c1df6595380fb7259289f5850662cd7aa9600dce114e4e525114e1'
            '62b087dd679e096a18611648308c05c896c587b488631fef4df51524dc4d2b6c'
            'ab9b3259ca838688a02beb37df3ba0d058b3b3847b703e99352b193a1be961e6'
            '32c0ca29f46c7335ed8f7c2052ee1eccc88287d88680e7d4d1a6104134abf5a2'
            '2dfd1fc8c6115a7633dca86df1098cc55e6401ec7cbee1c2d0f1cbcfa1d7bf78'
            'ef83a35e3516b456923be416606ccabfd05abe8ca587007a2fc00001c609ecca'
            'd8cb6bf029d5a3729149bdd6fb88b4d57691d37baf4e6d280283197693c82f24'
            '8da1046091242178219de63805bf08f2d8bfe72874ab5f2b616249d7b87227ea'
            '70f0e78e7335cb713c06a1e0b886d4c8edebf2048c588f00d12e95c930483cd9'
            '6d305596dc9be86a65b9200bf69c001a8e4ddd41cad471289c3c769b5530c359'
            'a4a10bcb55fc1991200c3835b359b81f5e3e858f5be77c6b9eaef033885c8bfc'
            'a578a12239e39728c63038db6539abcee422bed4d04ee5bf99f6ba5be8884a9a'
            '4e59212ab1951d1064132cf54c6531d9245a987648de2cad3ca448ae183a53c7')

_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: