#!/usr/bin/bash
# JOBoRun		: Jwm OpenBox Obarun RUNit
# Maintainer	: Joe Bo Run <joborun@disroot.org>
# PkgSource		: url="https://gittea.disroot.org/joborun-pkg/jobcore/$pkgname"
# Website		: https://pozol.eu
#-----------------------------------------| DESCRIPTION |---------------------------------------

pkgbase=linux
pkgver=5.15.29
pkgrel=01
pkgdesc='Linux 5.15 no zstd no ipv6'
url="https://www.kernel.org/"
arch=(x86_64)
makedepends=(  bc kmod libelf pahole cpio perl tar xz
  xmlto python-sphinx python-sphinx_rtd_theme graphviz imagemagick)
options=('!strip')
_srcname=linux-$pkgver
source=( https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/${_srcname}.tar.{xz,sign}
	config         # the main kernel config file
	0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
	0002-PCI_Add_more_NVIDIA_controllers_to_the_MSI_masking_quirk.patch
	0003-iommu_intel_do_deep_dma-unmapping_to_avoid_kernel-flooding.patch
	0004-cpufreq_intel_pstate_ITMT_support_for_overclocked_system.patch
	0005-Bluetooth_btintel_Fix_bdaddress_comparison_with_garbage_value.patch
	0006-lg-laptop_Recognize_more_models.patch
	0007_fix_NFSv4_mount_regression.diff
	sha256sums)

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

prepare() {
  cd $_srcname

  # fix NFSv4 mounting issue regression - FS#73838 / FS#73860
  # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/patch/?id=6f2836341d8a39e1e000572b10959347d7e61fd9
  patch -Rp1 -i ../0007_fix_NFSv4_mount_regression.diff

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

  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
#  diff -u ../config .config || :
#return 1
  make -s kernelrelease > version
  echo "Prepared $pkgbase version $(<version)"
}

build() {
  cd $_srcname
  make all
}
#  make htmldocs  ##  Add this into the build to make docs and uncomment the package section

_package() {
  pkgdesc="The $pkgdesc 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')
  provides=(VIRTUALBOX-GUEST-MODULES WIREGUARD-MODULE)
  replaces=(wireguard-lts)

  cd $_srcname
  local kernver="$(<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" INSTALL_MOD_STRIP=1 modules_install

  # remove build and source links
  rm "$modulesdir"/{source,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 "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux
  install -Dt "$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

  # 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 "$(file -bi "$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 "Stripping vmlinux..."
  strip -v $STRIP_STATIC "$builddir/vmlinux"

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

#_package-docs() {
#  pkgdesc="Documentation for the $pkgdesc kernel"
#
#  cd $_srcname
#  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"
#
#  echo "Installing documentation..."
#  local src dst
#  while read -rd '' src; do
#    dst="${src#Documentation/}"
#    dst="$builddir/Documentation/${dst#output/}"
#    install -Dm644 "$src" "$dst"
#  done < <(find Documentation -name '.*' -prune -o ! -type d -print0)
#
#  echo "Adding symlink..."
#  mkdir -p "$pkgdir/usr/share/doc"
#  ln -sr "$builddir/Documentation" "$pkgdir/usr/share/doc/$pkgbase"
#}

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

#---- license gpg-key sha256sums ----

license=(GPL2)

validpgpkeys=(ABAF11C65A2970B130ABE3C479BE3E4300411886  # Linus Torvalds
	647F28654894E3BD457199BE38DBBDC86092693E) # Greg Kroah-Hartman

# https://www.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc
sha256sums=(5905e684602c47ae95746d4003cb834335e5451aca4ac7c3013f15dd49ed876e # linux-5.15.29.tar.xz
	f39b69f4dea8e58119eda3d6c0ead1b97b60f046ffd149ee89dc7731e14677b2 # linux-5.15.29.tar.sign
	4c3f9bc2af54be6640d2d1070e97946ba1f302415b366eede0477a204db1a024 # config
	99df282c594cc269d9a5d19bb86ea887892d3654cfc53c4ce94a644cf3278423 # 0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
	c35018601f04ae81e0a2018a8597595db6ae053158c206845399cdebb2d2b706 # 0002-PCI_Add_more_NVIDIA_controllers_to_the_MSI_masking_quirk.patch
	7c7707c738983f3683d76295b496f578996b7341fa39ad334ec2833bfe4b966e # 0003-iommu_intel_do_deep_dma-unmapping_to_avoid_kernel-flooding.patch
	420844779356286057d931e30bbe1dabb8ee52bff575845a8fbf3c34e1a1d29e # 0004-cpufreq_intel_pstate_ITMT_support_for_overclocked_system.patch
	3fa8a4af66d5a3b99b48ca979a247c61e81c9b2d3bcdffa9d3895a5532a420b4 # 0005-Bluetooth_btintel_Fix_bdaddress_comparison_with_garbage_value.patch
	79266c6cc970733fd35881d9a8f0a74c25c00b4d81741b8d4bba6827c48f7c78 # 0006-lg-laptop_Recognize_more_models.patch
	e9527ad81d5b1821a7b17c56cb3abaec85785563f51e448cb3c06f1c68e2966f # 0007_fix_NFSv4_mount_regression.diff
	4fb00695e6587b95a3c8105701a577720158ff606360a6a7aabd440c5be1204c) # sha256sums