abslibre/libre/linux-libre-lts/PKGBUILD

# Maintainer: David P. <megver83@parabola.nu>
# Contributor: André Silva <emulatorman@hyperbola.info>
# Contributor: Márcio Silva <coadde@hyperbola.info>
# Contributor: fauno <fauno@parabola.nu>
# Contributor: Sorin-Mihai Vârgolici <smv@yobicore.org>
# Contributor: Michał Masłowski <mtjm@mtjm.eu>
# Contributor: Luke R. <g4jc@openmailbox.org>
# Contributor: Andreas Grapentin <andreas@grapentin.org>

# Based on linux-lts package

_replacesarchkernel=('linux%') # '%' gets replaced with kernel suffix
_replacesoldkernels=() # '%' gets replaced with kernel suffix
_replacesoldmodules=() # '%' gets replaced with kernel suffix

pkgbase=linux-libre-lts
pkgver=6.6.14
pkgrel=2
pkgdesc='LTS Linux-libre'
url='https://linux-libre.fsfla.org/'
arch=(i686 x86_64 armv7h)
license=(GPL2)
makedepends=(
  bc
  cpio
  gettext
  libelf
  pahole
  perl
  python
  tar
  xz

  # htmldocs
  graphviz
  imagemagick
  python-sphinx
  texlive-latexextra
)
options=('!strip')
_srcname=linux-6.6
source=(
  "https://linux-libre.fsfla.org/pub/linux-libre/releases/${_srcname##*-}-gnu/linux-libre-${_srcname##*-}-gnu.tar.xz"{,.sign}
  "https://linux-libre.fsfla.org/pub/linux-libre/releases/$pkgver-gnu/patch-${_srcname##*-}-gnu-$pkgver-gnu.xz"{,.sign}
  "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_"{clut224.ppm,vga16.ppm,mono.pbm}{,.sig}
  config.i686 config.x86_64 config.armv7h    # the main kernel config files
  linux-armv7h.preset                        # armv7h preset file for mkinitcpio ramdisk

  # maintain the TTY over USB disconnects
  # http://www.coreboot.org/EHCI_Gadget_Debug
  0001-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch
  # fix Atmel maXTouch touchscreen support
  # https://labs.parabola.nu/issues/877
  # http://www.fsfla.org/pipermail/linux-libre/2015-November/003202.html
  0002-fix-Atmel-maXTouch-touchscreen-support.patch
  # Arch Linux patches
  # https://gitlab.archlinux.org/archlinux/packaging/packages/linux-lts
  0001-ZEN-Add-sysctl-and-CONFIG-to-disallow-unprivileged-C.patch
  0002-skip-simpledrm-if-nvidia-drm.modeset=1-is.patch
  0003-Default-to-maximum-amount-of-ASLR-bits.patch
)
source_i686=(
  # avoid using zstd compression in ultra mode (exhausts virtual memory)
  no-ultra-zstd.patch
)
validpgpkeys=(
  474402C8C582DAFBE389C427BCB7CF877E7D47A7 # Alexandre Oliva
  6DB9C4B4F0D8C0DC432CF6E4227CA7C556B2BA78 # David P.
)
sha256sums=('d71785bdb694fefaa4f183e5dd2ffc453c179db6f9427cc37e1ed046f0073ccf'
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sha256sums_i686=('a044d2ed2ac13f0435e94e567f6fd5d8380b694f74e344857ca64ef0c9424a07')
b2sums=('e3e753fed07258f34e2e44e1acd4be0c22a3c58a3ae4856b518a4f99358f5bf6e8f38e41f422d9a434b33b0d7ee972e93ac7d37c9734949d6db263afe4c4f47c'
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b2sums_i686=('e7915714b504b92155c983a30df6d97966c14520dc9eb004671003dbdecf454b061138a6d237cabe86be32ae2ea4c598cdb821cb1dd52f6a9bfe5e280bffa321')

_replacesarchkernel=("${_replacesarchkernel[@]/\%/${pkgbase#linux-libre}}")
_replacesoldkernels=("${_replacesoldkernels[@]/\%/${pkgbase#linux-libre}}")
_replacesoldmodules=("${_replacesoldmodules[@]/\%/${pkgbase#linux-libre}}")

case "$CARCH" in
  i686|x86_64) KARCH=x86;;
  armv7h) KARCH=arm;;
esac

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

prepare() {
  cd $_srcname

  if [ "${_srcname##*-}" != "$pkgver" ]; then
    echo "Applying upstream patch..."
    patch -Np1 < "../patch-${_srcname##*-}-gnu-$pkgver-gnu"
  fi

  echo "Adding freedo as boot logo..."
  install -m644 -t drivers/video/logo \
    ../logo_linux_{clut224.ppm,vga16.ppm,mono.pbm}

  echo "Setting version..."
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "${pkgbase#linux-libre}" > localversion.20-pkgname

  local source=("${source[@]}")
  case "$CARCH" in
    "armv7h")
      source+=("${source_armv7h[@]}") ;;
    "i686")
      source+=("${source_i686[@]}") ;;
  esac

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

  echo "Setting config..."
  cp ../config.$CARCH .config
  make olddefconfig
  diff -u ../config.$CARCH .config || :

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

build() {
  cd $_srcname
  make all

  # temporarily disabled documentation due to sphinx_rtd_theme (FS32#163)
  if [ "$CARCH" != "i686" ]; then
    make htmldocs
  fi
}

_package() {
  pkgdesc="The $pkgdesc kernel and modules"
  depends=(
    coreutils
    initramfs
    kmod
  )
  optdepends=(
    'wireless-regdb: to set the correct wireless channels of your country'
    'linux-libre-firmware: firmware images needed for some devices'
  )
  provides=(
    KSMBD-MODULE
    VIRTUALBOX-GUEST-MODULES
    WIREGUARD-MODULE
  )
  replaces=(
    wireguard-lts
  )
  provides+=("${_replacesarchkernel[@]/%/=$pkgver}" "LINUX-ABI_VERSION=$pkgver")
  conflicts+=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")
  replaces+=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")

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

  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"

  # On armv7h, the uboot4extlinux-* packages provide and use a extlinux.conf
  # file in /boot/extlinux/. This file is needed for the bootloader to find the
  # kernel, initramfs and devicetree. Because of that we need the kernel image
  # to also be installed in /boot for several reasons:
  #
  # - First the $modulesdir name contains the kernel version, and extlinux.conf
  #   is supposed to be edited by hand by users. Users can't be expected to do
  #   that at each kernel updates beause at some point they will forget and get
  #   a mismatch between the kernel image and modules which often breaks boot.
  #   In addition people know that the kernel image is in /boot. Having it in
  #   $moduledir instead is not documented anywhere. And we don't have code that
  #   can automatically generate an extlinux.conf.
  #
  # - Then we also need the kernel image in /boot to be able to use LVM rootfs
  #   as this requires a separate /boot partition and u-boot can't read LVM.
  #
  # - Finally, doing the copy manually might be straigtforward in some cases,
  #   as computers like the Lime 2 A20 are well supported, boot on a microSD or
  #   other removable storage that can be read by a laptop/desktop computer and
  #   even has a display that works at boot. But some of the supported ARM
  #   computers have an internal eMMC and no display that works at boot (like
  #   the TBS2910 or beaglebone black) and no way to export the internal storage
  #   as an usb mass storage (because the ums command is not compiled in u-boot)
  #   and sometimes even no way to connect a display at all (like the BegaleBone
  #   green). So that makes the simple way of copying a file way more complex.
  #   So it is a good idea not to break the boot if possible.
  if [ "$CARCH" = "armv7h" ]; then
      install -Dm644 "$(make -s image_name)" "$pkgdir/boot/vmlinuz-${pkgbase}"
  fi

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

  echo "Installing modules..."
  ZSTD_CLEVEL=19 make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
    DEPMOD=/doesnt/exist modules_install  # Suppress depmod

  # remove build link
  rm "$modulesdir"/build

  if [ "$CARCH" = "armv7h" ]; then
    echo "Installing device tree binaries..."
    make INSTALL_DTBS_PATH="$pkgdir/boot/dtbs/$pkgbase" dtbs_install

    # armv7h presets only work with ALL_kver=$(<version)
    backup+=("etc/mkinitcpio.d/$pkgbase.preset")
    echo "Installing mkinitcpio preset..."
    sed "s|%PKGBASE%|$pkgbase|g;s|%KERNVER%|$(<version)|g" ../linux-armv7h.preset \
      | install -Dm644 /dev/stdin "$pkgdir/etc/mkinitcpio.d/$pkgbase.preset"
  fi
}

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
  depends=(pahole)
  provides=("${_replacesarchkernel[@]/%/-headers=$pkgver}")
  conflicts=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")
  replaces=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")

  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 "$builddir/arch/$KARCH" -m644 arch/$KARCH/Makefile
  if [[ $CARCH = i686 ]]; then
    install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile_32.cpu
  fi
  cp -t "$builddir" -a scripts

  # required when STACK_VALIDATION is enabled
  if [[ -e tools/objtool/objtool ]]; then
    install -Dt "$builddir/tools/objtool" tools/objtool/objtool
  fi

  # required when DEBUG_INFO_BTF_MODULES is enabled
  if [[ -e tools/bpf/resolve_btfids/resolve_btfids ]]; then
    install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids
  fi

  echo "Installing headers..."
  cp -t "$builddir" -a include
  cp -t "$builddir/arch/$KARCH" -a arch/$KARCH/include
  install -Dt "$builddir/arch/$KARCH/kernel" -m644 arch/$KARCH/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
    [[ $arch = */$KARCH/ ]] && 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 "$(file -Sib "$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 $pkgdesc kernel"
  provides=("${_replacesarchkernel[@]/%/-docs=$pkgver}")
  conflicts=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")
  replaces=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")

  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

# vim:set ts=8 sts=2 sw=2 et: