path: root/PKGBUILD

# Maintainer: Piotr Gorski <lucjan.lucjanov@gmail.com>
# Contributor:  Timofey Titovets <nefelim4ag@gmail.com>

pkgbase=linux-next-git
#pkgname=("${pkgbase}")
_srcname=linux-next
pkgver=20180608.0.g8a91a2caa8c1
pkgrel=1
arch=('x86_64')
url="http://www.kernel.org/"
license=('GPL2')
makedepends=('kmod' 'inetutils' 'bc' 'libelf' 'git')
options=('!strip')
source=( git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
         # the main kernel config files
        'config'
         # pacman hook for depmod
        '60-linux.hook'
         # pacman hook for initramfs regeneration
        '90-linux.hook'
         # pacman hook for remove initramfs
        '99-linux.hook'
         # standard config files for mkinitcpio ramdisk
        'linux.preset')
md5sums=('SKIP'
         '7abf6e18a471519399d3cf45f3b2c457'
         'ce6c81ad1ad1f8b333fd6077d47abdaf'
         'a85bfae59eb537b973c388ffadb281ff'
         '44a27afc12a89b2269dd22d1ec4c30f7'
         'a329f9581060d555dc7358483de9760a')

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

#######
# Set to e.g. menuconfig, xconfig or gconfig and etc.
#
# For a full list of supported commands, please have a look
# at "Configuration targets" section of `make help`'s output
# or the help target in scripts/kconfig/Makefile
# https://kernel.org/doc/makehelp.txt
#
# If unset or set to an empty or space-only string, the
# (manual) kernel configuration step will be skipped.
#
linux_next_git_config_cmd="${linux_next_git_config_cmd:-olddefconfig}"

#######
# Directory with patches
# linux_next_git_patches_dir="path"

#######
# Use local config (non empty -> yes)
# linux_next_git_local_config=1

######
# Reset to specified tag
# linux_next_git_tag=""

pkgver() {
  cd "${_srcname}"
  git describe --long --tags | sed 's/next.//;s/-/./g'
}

prepare() {
  cd "${srcdir}/${_srcname}"

  if [ -n "${linux_next_git_tag}" ]; then
    msg "Reset to git tag: ${linux_next_git_tag}"
    git reset --hard ${linux_next_git_tag}
  fi

  #################
  # Apply patches #
  #################
  if [ -d "${linux_next_git_patches_dir}" ]; then
    msg "Applying patches..."
    for i in "${linux_next_git_patches_dir}"/*; do
      [[ ${i##*/} =~ .*\.patch$ ]] && msg "Applying ${i##*/}..." && \
      git apply "$i" || (error "Applying ${i##*/} failed" && return 1)
      msg "---"
    done
  fi

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

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

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

  if [ -n "${linux_next_git_local_config}" ]; then
          [ -f /proc/config.gz ] && zcat /proc/config.gz > ./.config
  fi

  # 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
  make ${linux_next_git_config_cmd}
  
  # save configuration for later reuse
  cat .config > "${startdir}/config.last"
}

build() {
  cd "${srcdir}/${_srcname}"

  make bzImage modules
}

_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 "${srcdir}/${_srcname}"

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

    mkdir -p "${pkgdir}"/{boot,usr/lib/modules}
    make INSTALL_MOD_PATH="${pkgdir}/usr" modules_install
    cp arch/x86/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"

    # make room for external modules
    local _extramodules="extramodules-${_basekernel}${_kernelname}"
    ln -s "../${_extramodules}" "${pkgdir}/usr/lib/modules/${_kernver}/extramodules"

    # add real version for building modules and running depmod from hook
    echo "${_kernver}" |
        install -Dm644 /dev/stdin "${pkgdir}/usr/lib/modules/${_extramodules}/version"

    # remove build and source links
    rm "${pkgdir}"/usr/lib/modules/${_kernver}/{source,build}

    # now we call depmod...
    depmod -b "${pkgdir}/usr" -F System.map "${_kernver}"

    # add vmlinux
    install -Dt "${pkgdir}/usr/lib/modules/${_kernver}/build" -m644 vmlinux

    # sed expression for following substitutions
    local _subst="
        s|%PKGBASE%|${pkgbase}|g
        s|%KERNVER%|${_kernver}|g
        s|%EXTRAMODULES%|${_extramodules}|g
    "

    # hack to allow specifying an initially nonexisting install file
    sed "${_subst}" "${startdir}/${install}" > "${startdir}/${install}.pkg"
    true && install=${install}.pkg

    # install mkinitcpio preset file
    sed "${_subst}" ../linux.preset |
        install -Dm644 /dev/stdin "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"

    # install pacman hooks
    sed "${_subst}" ../60-linux.hook |
        install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/60-${pkgbase}.hook"
    sed "${_subst}" ../90-linux.hook |
        install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/90-${pkgbase}.hook"
    sed "${_subst}" ../99-linux.hook |
        install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/99-${pkgbase}.hook"     
}

_package-headers() {
  pkgdesc="Header files and scripts for building modules for ${pkgbase/linux/Linux} kernel"

    cd "${srcdir}/${_srcname}"
    local _builddir="${pkgdir}/usr/lib/modules/${_kernver}/build"

    install -Dt "${_builddir}" -m644 Makefile .config Module.symvers
    install -Dt "${_builddir}/kernel" -m644 kernel/Makefile

    mkdir "${_builddir}/.tmp_versions"

    cp -t "${_builddir}" -a include scripts

    install -Dt "${_builddir}/arch/x86" -m644 arch/x86/Makefile
    install -Dt "${_builddir}/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s

    cp -t "${_builddir}/arch/x86" -a arch/x86/include

    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

    # add xfs and shmem for aufs building
    mkdir -p "${_builddir}"/{fs/xfs,mm}

    # copy in Kconfig files
    find . -name Kconfig\* -exec install -Dm644 {} "${_builddir}/{}" \;

    # add objtool for external module building and enabled VALIDATION_STACK option
    install -Dt "${_builddir}/tools/objtool" tools/objtool/objtool

    # remove unneeded architectures
    local _arch
    for _arch in "${_builddir}"/arch/*/; do
        [[ ${_arch} == */x86/ ]] && continue
        rm -r "${_arch}"
    done

    # remove files already in linux-uksml-docs package
    rm -r "${_builddir}/Documentation"
    
    # remove now broken symlinks
    find -L "${_builddir}" -type l -printf 'Removing %P\n' -delete

    # Fix permissions
    chmod -R u=rwX,go=rX "${_builddir}"

    # strip scripts directory
    local _binary _strip
    while read -rd '' _binary; do
        case "$(file -bi "${_binary}")" in
        *application/x-sharedlib*)  _strip="${STRIP_SHARED}"   ;; # Libraries (.so)
        *application/x-archive*)    _strip="${STRIP_STATIC}"   ;; # Libraries (.a)
        *application/x-executable*) _strip="${STRIP_BINARIES}" ;; # Binaries
        *) continue ;;
        esac
        /usr/bin/strip ${_strip} "${_binary}"
    done < <(find "${_builddir}/scripts" -type f -perm -u+w -print0 2>/dev/null)
}

_package-docs() {
  pkgdesc="Kernel hackers manual - HTML documentation that comes with the ${pkgbase/linux/Linux} kernel"

    cd "${srcdir}/${_srcname}"

    local _builddir="${pkgdir}/usr/lib/modules/${_kernver}/build"

    mkdir -p "${_builddir}"
    cp -t "${_builddir}" -a Documentation

    # Fix permissions
    chmod -R u=rwX,go=rX "${_builddir}"
}

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: