# $Id: PKGBUILD 328966 2018-07-18 10:54:20Z heftig $
# Maintainer: Tobias Powalowski <tpowa@archlinux.org>
# Maintainer: Thomas Baechler <thomas@archlinux.org>

pkgbase=linux               # Build stock -ARCH kernel
#pkgbase=linux-custom       # Build kernel with a different name
_srcname=linux-4.17
pkgver=4.17.8
pkgrel=1
arch=('x86_64')
url="https://www.kernel.org/"
license=('GPL2')
makedepends=('xmlto' 'kmod' 'inetutils' 'bc' 'libelf')
options=('!strip')
source=(
  https://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar
  https://www.kernel.org/pub/linux/kernel/v4.x/patch-${pkgver}.{xz,sign}
  config         # the main kernel config file
  60-linux.hook  # pacman hook for depmod
  90-linux.hook  # pacman hook for initramfs regeneration
  linux.preset   # standard config files for mkinitcpio ramdisk
  0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
  0002-Revert-drm-i915-edp-Allow-alternate-fixed-mode-for-e.patch
  0003-ACPI-watchdog-Prefer-iTCO_wdt-always-when-WDAT-table.patch
  0004-mac80211-disable-BHs-preemption-in-ieee80211_tx_cont.patch
)
validpgpkeys=(
  'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
  '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
)
sha256sums=('4b4ab6ea3a2497fe79a38e5c6694654f8f8faa7dab3b38417c74296b49a54368'
            '146f68fa5ded4c33f3bafba23224ed8fae2a27f701257c899c6a4a7fa61eb6d0'
            'SKIP'
            'f8e890eac9779a89009c1e2339f757e9781864df09805211fad005146fe2578b'
            'ae2e95db94ef7176207c690224169594d49445e04249d2499e9d2fbc117a0b21'
            '75f99f5239e03238f88d1a834c50043ec32b1dc568f2cc291b07d04718483919'
            'ad6344badc91ad0630caacde83f7f9b97276f80d26a20619a87952be65492c65'
            '92f848d0e21fbb2400e50d1c1021514893423641e5450896d7b1d88aa880b2b9'
            'fc3c50ae6bd905608e0533a883ab569fcf54038fb9d6569b391107d9fd00abbc'
            'bc50c605bd0e1fa7437c21ddef728b83b6de3322b988e14713032993dfa1fc69'
            '66284102261c4ed53db050e9045c8672ba0e5171884b46e58f6cd417774d8578')

_kernelname=${pkgbase#linux}
: ${_kernelname:=-ARCH}

prepare() {
  cd ${_srcname}

  # add upstream patch
  patch -p1 -i ../patch-${pkgver}

  # add latest fixes from stable queue, if needed
  # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git

  # disable USER_NS for non-root users by default
  patch -Np1 -i ../0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch

  # https://bugs.archlinux.org/task/56711
  patch -Np1 -i ../0002-Revert-drm-i915-edp-Allow-alternate-fixed-mode-for-e.patch

  # https://bugs.archlinux.org/task/56780
  patch -Np1 -i ../0003-ACPI-watchdog-Prefer-iTCO_wdt-always-when-WDAT-table.patch

  # Fix iwd provoking a BUG
  patch -Np1 -i ../0004-mac80211-disable-BHs-preemption-in-ieee80211_tx_cont.patch

  cat ../config - >.config <<END
CONFIG_LOCALVERSION="${_kernelname}"
CONFIG_LOCALVERSION_AUTO=n
END

  # set extraversion to pkgrel and empty localversion
  sed -e "/^EXTRAVERSION =/s/=.*/= -${pkgrel}/" \
      -e "/^EXTRAVERSION =/aLOCALVERSION =" \
      -i Makefile

  # don't run depmod on 'make install'. We'll do this ourselves in packaging
  sed -i '2iexit 0' scripts/depmod.sh

  # get kernel version
  make prepare

  # load configuration
  # Configure the kernel. Replace the line below with one of your choice.
  #make menuconfig # CLI menu for configuration
  #make nconfig # new CLI menu for configuration
  #make xconfig # X-based configuration
  #make oldconfig # using old config from previous kernel version
  # ... or manually edit .config

  # rewrite configuration
  yes "" | make config >/dev/null
}

build() {
  cd ${_srcname}

  ###
  echo
  echo
  echo
  export DISTCC_VERBOSE=1
  type -a gcc

  make bzImage
}

_package() {
  pkgdesc="The ${pkgbase/linux/Linux} kernel and modules"
  [ "${pkgbase}" = "linux" ] && groups=('base')
  depends=('coreutils' 'linux-firmware' 'kmod' 'mkinitcpio>=0.7')
  optdepends=('crda: to set the correct wireless channels of your country')
  backup=("etc/mkinitcpio.d/${pkgbase}.preset")
  install=linux.install

  cd ${_srcname}

  # get kernel version
  _kernver="$(make kernelrelease)"
  _basekernel=${_kernver%%-*}
  _basekernel=${_basekernel%.*}

  mkdir -p "${pkgdir}"/{boot,usr/lib/modules}
}

pkgname=("${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: