# Maintainer: Daniel Micay <danielmicay@gmail.com>
# Contributor: Tobias Powalowski <tpowa@archlinux.org>
# Contributor: Thomas Baechler <thomas@archlinux.org>
# Contributor: henning mueller <henning@orgizm.net>
# Contributor: Thomas Dwyer http://tomd.tel
# Maintainer (Parabola): André Silva <emulatorman@parabola.nu>
# Contributor (Parabola): Nicolás Reynolds <fauno@kiwwwi.com.ar>
# Contributor (Parabola): Sorin-Mihai Vârgolici <smv@yobicore.org>
# Contributor (Parabola): Michał Masłowski <mtjm@mtjm.eu>
# Contributor (Parabola): Márcio Silva <coadde@parabola.nu>

pkgbase=linux-libre-grsec   # Build stock -LIBRE-GRSEC kernel
#pkgbase=linux-libre-custom # Build kernel with a different name
_basekernel=3.14
_sublevel=4
_grsecver=3.0
_timestamp=201405141623
_pkgver=${_basekernel}.${_sublevel}
pkgver=${_basekernel}.${_sublevel}.${_timestamp}
pkgrel=1
_lxopkgver=${_basekernel}.4 # nearly always the same as pkgver
arch=('i686' 'x86_64' 'mips64el')
url="https://grsecurity.net/"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'kmod' 'inetutils' 'bc')
options=('!strip')
source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_basekernel}-gnu/linux-libre-${_basekernel}-gnu.tar.xz"
        "http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgver}-gnu/patch-${_basekernel}-gnu-${_pkgver}-gnu.xz"
        "https://grsecurity.net/test/grsecurity-${_grsecver}-${_pkgver}-${_timestamp}.patch"
        "https://grsecurity.net/test/grsecurity-${_grsecver}-${_pkgver}-${_timestamp}.patch.sig"
        # the main kernel config files
        'config.i686' 'config.x86_64'
        # standard config files for mkinitcpio ramdisk
        "${pkgbase}.preset"
        'Kbuild'
        'Kbuild.platforms'
        'boot-logo.patch'
        'change-default-console-loglevel.patch'
        '0001-Bluetooth-allocate-static-minor-for-vhci.patch'
        '0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch'
        '0003-module-remove-MODULE_GENERIC_TABLE.patch'
        '0004-fs-Don-t-return-0-from-get_anon_bdev.patch'
        '0005-Revert-Bluetooth-Enable-autosuspend-for-Intel-Blueto.patch'
        '0006-genksyms-fix-typeof-handling.patch'
        '0010-iwlwifi-mvm-delay-enabling-smart-FIFO-until-after-be.patch'
        '0011-kernfs-fix-removed-error-check.patch'
        '0012-fix-saa7134.patch'
        '0013-net-Start-with-correct-mac_len-in-skb_network_protocol.patch'
        '0015-fix-xsdt-validation.patch'
        'sysctl.conf'
        "http://www.linux-libre.fsfla.org/pub/linux-libre/lemote/gnewsense/pool/debuginfo/linux-patches-${_lxopkgver}-gnu_0loongsonlibre_mipsel.tar.xz")
sha256sums=('477555c709b9407fe37dbd70d3331ff9dde1f9d874aba2741f138d07ae6f281b'
            '01de5e15a2081197859e617c441de5cac9ddf60bed6fcf4dcff7a54e210e7815'
            'e41e5dea54db4311655ccc68b371ac15dcc48f8767ca0a02150af70e831d2e4d'
            'SKIP'
            '0b6dbdf4d1677a39b9a0d55e8d7c66fe644fa77d769e3b673064181222b17467'
            '8207a533f4fbad05ad26061f924957a7a92436d44a5dd7ca10e61d730c5e0ef9'
            '9d2f34f1a8c514a7117b9b017a1f7312fb351f4d0b079eed102f89361534d486'
            'c5451d5e1eafc4f8d28b1a2958ec3102c124433a414a86450fc32058e004156b'
            '55bf07738a3286168a7929ae16dbca29defd14e77b9d24c487ae4c3d12bb9eb9'
            'f913384dd6dbafca476fcf4ccd35f0f497dda5f3074866022facdb92647771f6'
            'faced4eb4c47c4eb1a9ee8a5bf8a7c4b49d6b4d78efbe426e410730e6267d182'
            '6d72e14552df59e6310f16c176806c408355951724cd5b48a47bf01591b8be02'
            '52dec83a8805a8642d74d764494acda863e0aa23e3d249e80d4b457e20a3fd29'
            '65d58f63215ee3c5f9c4fc6bce36fc5311a6c7dbdbe1ad29de40647b47ff9c0d'
            '1e1ae0f31f722e80da083ecada1f1be57f9ddad133941820c4483b0240e494c1'
            '3fffb01cf97a5a7ab9601cb277d2468c0fb1e1cceba4225915f3ffae3a5694ec'
            'cf2e7a2d00787f754028e7459688c2755a406e632ce48b60952fa4ff7ed6f4b7'
            'c0af4622f75c89fef62183e18b7d49998228d4eaa906c6accaf4aa4ff0134f85'
            '04f44bf5c181d6dc31905937c1bdccb0f5aecaad3a579e99b302502b9cbe0f7a'
            '79359454c9d8446eb55add2b1cdbf8332bd67dafb01fefb5b1ca090225f64d18'
            'f2a5e22c1ba6e9b8a32a7bd4a5327ee95538aa10edcee3cd12578f8ff49bf6be'
            '384dd13fd4248fd6809da8c6ae29ced55d4a5cacc33ac2ae7522093ec0fb26d4'
            'a37823f0cdf3f318ec3f486f6e4035a7a8f887522d3a563d4dfe155f143ba24f'
            '3cd53473e049a4809d9dde8ebef73307ce87076d707f3fd5c100844d4a9e8255')
if [ "$CARCH" != "mips64el" ]; then
    # don't use the Loongson-specific patches on non-mips64el arches.
    unset source[${#source[@]}-1]
    unset sha256sums[${#sha256sums[@]}-1]
fi

_kernelname=${pkgbase#linux-libre}
_localversionname=-LIBRE-GRSEC

prepare() {
  cd "${srcdir}/linux-${_basekernel}"

  if [ "${_basekernel}" != "${_pkgver}" ]; then
    patch -p1 -i "${srcdir}/patch-${_basekernel}-gnu-${_pkgver}-gnu"
  fi

  # add grsecurity patches
  patch -Np1 -i "${srcdir}/grsecurity-${_grsecver}-${_pkgver}-${_timestamp}.patch"
  rm localversion-grsec

  # add freedo as boot logo
  patch -p1 -i "${srcdir}/boot-logo.patch"

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

  # set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param)
  # remove this when a Kconfig knob is made available by upstream
  # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)
  patch -p1 -i "${srcdir}/change-default-console-loglevel.patch"

  # Fix vhci warning in kmod (to restore every kernel maintainer's sanity)
  patch -p1 -i "${srcdir}/0001-Bluetooth-allocate-static-minor-for-vhci.patch"

  # Fix atkbd aliases
  patch -p1 -i "${srcdir}/0002-module-allow-multiple-calls-to-MODULE_DEVICE_TABLE-p.patch"
  patch -p1 -i "${srcdir}/0003-module-remove-MODULE_GENERIC_TABLE.patch"

  # Fix various bugs caused by rootfs having FSID 0
  # See http://www.spinics.net/lists/kernel/msg1716924.html
  patch -p1 -i "${srcdir}/0004-fs-Don-t-return-0-from-get_anon_bdev.patch"

  # Disable usb autosuspend for intel btusb
  # See http://www.spinics.net/lists/kernel/msg1716461.html
  # Until a solution is found, make sure the driver leaves autosuspend alone
  patch -p1 -i "${srcdir}/0005-Revert-Bluetooth-Enable-autosuspend-for-Intel-Blueto.patch"

  # Fix generation of symbol CRCs
  # http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dc53324060f324e8af6867f57bf4891c13c6ef18
  patch -p1 -i "${srcdir}/0006-genksyms-fix-typeof-handling.patch"

  # https://git.kernel.org/cgit/linux/kernel/git/iwlwifi/iwlwifi-fixes.git/commit/?id=12f853a89e29f50b17698e17e73c328a35f1498d
  # FS#39815
  patch -p1 -i "${srcdir}/0010-iwlwifi-mvm-delay-enabling-smart-FIFO-until-after-be.patch"

  # fix Xorg crash with i810 chipset due to wrong removed error check
  # References: http://lkml.kernel.org/g/533D01BD.1010200@googlemail.com
  patch -Np1 -i "${srcdir}/0011-kernfs-fix-removed-error-check.patch"

  # fix saa7134 video
  # https://bugs.archlinux.org/task/39904
  # https://bugzilla.kernel.org/show_bug.cgi?id=73361
  patch -Np1 -i "${srcdir}/0012-fix-saa7134.patch"

  # fix tun/openvpn performance
  # https://bugs.archlinux.org/task/40089
  # https://bugzilla.kernel.org/show_bug.cgi?id=74051
  patch -Np1 -i "${srcdir}/0013-net-Start-with-correct-mac_len-in-skb_network_protocol.patch"

  # fix xsdt validation bug
  # https://bugs.archlinux.org/task/39811
  # https://bugzilla.kernel.org/show_bug.cgi?id=73911
  patch -Np1 -i "${srcdir}/0015-fix-xsdt-validation.patch"

  if [ "$CARCH" == "mips64el" ]; then
    sed -i "s|^EXTRAVERSION.*|EXTRAVERSION =-libre-grsec|" Makefile
    sed -r "s|^( SUBLEVEL = ).*|\1$_sublevel|" \
        < "${srcdir}/lxo-config.patch" > lxo-config.patch
    msg2 "Adding loongson-community patches"
    patch -p1 -i ${srcdir}/${_basekernel}*-*-loongson-community.patch
    patch -p0 -i lxo-config.patch

  # ensure N32, add localversion, remove uevent helper as per
  # https://git.kernel.org/?p=linux/hotplug/udev.git;a=blob_plain;f=README
  # and make USB storage support builtin (e.g. for booting from USB
  # disks without slowly loading an initramfs)
    sed -ri \
        -e "s|CONFIG_MIPS32_N32=.*|CONFIG_MIPS32_N32=y|g" \
        -e "s|CONFIG_UEVENT_HELPER_PATH=.*|CONFIG_UEVENT_HELPER_PATH=\"\"|g" \
        -e "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_localversionname}\"|g" \
        -e "s;(CONFIG_USB(_COMMON|_EHCI_HCD|_OHCI_HCD|_STORAGE.*|_UAS)?)=.*;\1=y;g" \
        ./.config
  else
    cat "${srcdir}/config.${CARCH}" > ./.config # simpler
  fi

  if [ "${_kernelname}" != "" ]; then
    sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_localversionname}\"|g" ./.config
    sed -i "s|CONFIG_LOCALVERSION_AUTO=.*|CONFIG_LOCALVERSION_AUTO=n|" ./.config
  fi

  # set extraversion to pkgrel
  sed -ri "s|^(EXTRAVERSION =).*|\1 .${_timestamp}-${pkgrel}|" 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 "${srcdir}/linux-${_basekernel}"

  if [ "$CARCH" == "mips64el" ]; then
    # The build system passes it directly to linker, disable to avoid
    # having unknown -Wl,... options.
    export LDFLAGS=""
    # bzImage is arch-specific and not supported on mips; vmlinux is
    # useful for oprofile.
    make ${MAKEFLAGS} LOCALVERSION= vmlinux vmlinuz modules
  else
    make ${MAKEFLAGS} LOCALVERSION= bzImage modules
  fi
}

_package() {
  pkgdesc="The ${pkgbase^} kernel and modules with grsecurity/PaX patches"
  [ "${pkgbase}" = "linux-libre" ] && groups=('base')
  depends=('coreutils' 'linux-libre-firmware' 'kmod')
  optdepends=('crda: to set the correct wireless channels of your country')
  provides=("kernel26${_kernelname}=${pkgver}" "linux${_kernelname}=${pkgver}")
  conflicts=("kernel26${_kernelname}" "kernel26-libre${_kernelname}" "linux${_kernelname}")
  replaces=("kernel26${_kernelname}" "kernel26-libre${_kernelname}" "linux${_kernelname}")
  backup=("etc/mkinitcpio.d/${pkgbase}.preset" 'etc/sysctl.d/05-grsecurity.conf')
  install=${pkgbase}.install
  if [ "$CARCH" = "mips64el" ]; then
      optdepends+=('mkinitcpio: to make the initramfs (needs reinstall of this package)')
      conflicts+=('mkinitcpio<0.7')
  else
      depends+=('mkinitcpio>=0.7')
  fi

  cd "${srcdir}/linux-${_basekernel}"

  KARCH=x86
  [ $CARCH = "mips64el" ] && KARCH=mips

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

  mkdir -p "${pkgdir}"/{lib/modules,lib/firmware,boot}
  make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}" modules_install

  if [ "$CARCH" == "mips64el" ]; then
    cp vmlinuz "${pkgdir}/boot/vmlinuz-${pkgbase}"
    cp vmlinux "${pkgdir}/boot/vmlinux-${pkgbase}"
  else
    cp arch/${KARCH}/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
  fi

  # set correct depmod command for install
  cp -f "${startdir}/${install}" "${startdir}/${install}.pkg"
  true && install=${install}.pkg
  sed \
    -e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/" \
    -e  "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/" \
    -i "${startdir}/${install}"

  # install mkinitcpio preset file for kernel
  install -D -m644 "${srcdir}/${pkgbase}.preset" "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"
  sed \
    -e "1s|'linux*.*'|'${pkgbase}'|" \
    -e "s|ALL_kver=.*|ALL_kver=\"/boot/vmlinuz-${pkgbase}\"|" \
    -e "s|default_image=.*|default_image=\"/boot/initramfs-${pkgbase}.img\"|" \
    -e "s|fallback_image=.*|fallback_image=\"/boot/initramfs-${pkgbase}-fallback.img\"|" \
    -i "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"

  # mkinitcpio 0.7 relies on bzImage to find the kernel version
  if [ "$CARCH" == "mips64el" ]; then
    sed -e "s|ALL_kver=.*|ALL_kver=\"${_kernver}\"|" \
        -i "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"
  fi

  # remove build and source links
  rm -f "${pkgdir}"/lib/modules/${_kernver}/{source,build}
  # remove the firmware
  rm -rf "${pkgdir}/lib/firmware"
  # gzip -9 all modules to save 100MB of space
  find "${pkgdir}" -name '*.ko' -exec gzip -9 {} \;
  # make room for external modules
  ln -s "../extramodules-${_basekernel}${_localversionname:--LIBRE-GRSEC}" "${pkgdir}/lib/modules/${_kernver}/extramodules"
  # add real version for building modules and running depmod from post_install/upgrade
  mkdir -p "${pkgdir}/lib/modules/extramodules-${_basekernel}${_localversionname:--LIBRE-GRSEC}"
  echo "${_kernver}" > "${pkgdir}/lib/modules/extramodules-${_basekernel}${_localversionname:--LIBRE-GRSEC}/version"

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

  # move module tree /lib -> /usr/lib
  mkdir -p "${pkgdir}/usr"
  mv "${pkgdir}/lib" "${pkgdir}/usr/"

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

  # add grsecurity gcc plugins
  mkdir -p "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc"
  cp -a tools/gcc/*.h "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/"
  cp -a tools/gcc/Makefile "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/"
  install -m644 tools/gcc/*.so "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/"

  # install sysctl configuration for grsecurity switches
  install -Dm600 "${srcdir}/sysctl.conf" "${pkgdir}/etc/sysctl.d/05-grsecurity.conf"
}

_package-headers() {
  pkgdesc="Header files and scripts for building modules for ${pkgbase^} kernel"
  provides=("kernel26${_kernelname}-headers=${pkgver}" "linux${_kernelname}-headers=${pkgver}")
  conflicts=("kernel26${_kernelname}-headers" "kernel26-libre${_kernelname}-headers" "linux${_kernelname}-headers")
  replaces=("kernel26${_kernelname}-headers" "kernel26-libre${_kernelname}-headers" "linux${_kernelname}-headers")

  KARCH=x86
  [ $CARCH = "mips64el" ] && KARCH=mips

  # in case of repackaging this is empty
  if [ -z "${_kernver}" ]; then
    cd "${srcdir}/linux-${_basekernel}"
    _kernver="$(make LOCALVERSION= kernelrelease)"
  fi

  install -dm755 "${pkgdir}/usr/lib/modules/${_kernver}"

  cd "${srcdir}/linux-${_basekernel}"
  install -D -m644 Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/Makefile"
  install -D -m644 kernel/Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/kernel/Makefile"
  install -D -m644 .config \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/.config"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include"

  for i in acpi asm-generic config crypto drm generated keys linux math-emu \
    media net pcmcia scsi sound trace uapi video xen; do
    cp -a include/${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/include/"
  done

  # copy arch includes for external modules
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}"
  cp -a arch/${KARCH}/include "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"

  # copy files necessary for later builds
  cp Module.symvers "${pkgdir}/usr/lib/modules/${_kernver}/build"
  cp -a scripts "${pkgdir}/usr/lib/modules/${_kernver}/build"

  if [ "$CARCH" = "mips64el" ]; then
    cp arch/${KARCH}/Kbuild "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
    cp -a arch/${KARCH}/loongson "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
    cp ${srcdir}/Kbuild.platforms "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
  fi

  # fix permissions on scripts dir
  chmod og-w -R "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/.tmp_versions"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel"

  cp arch/${KARCH}/Makefile "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"

  if [ "${CARCH}" = "i686" ]; then
    cp arch/${KARCH}/Makefile_32.cpu "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
  fi

  cp arch/${KARCH}/kernel/asm-offsets.s "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel/"

  # add docbook makefile
  install -D -m644 Documentation/DocBook/Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/DocBook/Makefile"

  # add dm headers
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"
  cp drivers/md/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"

  # add inotify.h
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux"
  cp include/linux/inotify.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux/"

  # add wireless headers
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"
  cp net/mac80211/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"

  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/9912
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-core"
  cp drivers/media/dvb-core/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-core/"
  # and...
  # http://bugs.archlinux.org/task/11194
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"
  cp include/config/dvb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"

  # add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
  # in reference to:
  # http://bugs.archlinux.org/task/13146
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  cp drivers/media/dvb-frontends/lgdt330x.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"
  cp drivers/media/i2c/msp3400-driver.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"

  # add dvb headers
  # in reference to:
  # http://bugs.archlinux.org/task/20402
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb"
  cp drivers/media/usb/dvb-usb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends"
  cp drivers/media/dvb-frontends/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners"
  cp drivers/media/tuners/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners/"

  # add xfs and shmem for aufs building
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/mm"
  cp fs/xfs/xfs_sb.h "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs/xfs_sb.h"

  # copy in Kconfig files
  for i in $(find . -name "Kconfig*"); do
    mkdir -p "${pkgdir}"/usr/lib/modules/${_kernver}/build/`echo ${i} | sed 's|/Kconfig.*||'`
    cp ${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/${i}"
  done

  chown -R root.root "${pkgdir}/usr/lib/modules/${_kernver}/build"
  find "${pkgdir}/usr/lib/modules/${_kernver}/build" -type d -exec chmod 755 {} \;

  # strip scripts directory
  find "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts" -type f -perm -u+w 2>/dev/null | while read binary ; do
    case "$(file -bi "${binary}")" in
      *application/x-sharedlib*) # Libraries (.so)
        /usr/bin/strip ${STRIP_SHARED} "${binary}";;
      *application/x-archive*) # Libraries (.a)
        /usr/bin/strip ${STRIP_STATIC} "${binary}";;
      *application/x-executable*) # Binaries
        /usr/bin/strip ${STRIP_BINARIES} "${binary}";;
    esac
  done

  # remove unneeded architectures
  rm -rf "${pkgdir}"/usr/lib/modules/${_kernver}/build/arch/{alpha,arc,arm,arm26,arm64,avr32,blackfin,c6x,cris,frv,h8300,hexagon,ia64,m32r,m68k,m68knommu,metag,microblaze,mn10300,openrisc,parisc,powerpc,ppc,s390,score,sh,sh64,sparc,sparc64,tile,unicore32,um,v850,xtensa}
  if [ "$CARCH" = "mips64el" ]; then
    rm -rf ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/x86
  else
    rm -rf ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/mips
  fi
}

_package-docs() {
  pkgdesc="Kernel hackers manual - HTML documentation that comes with the ${pkgbase^} kernel"
  provides=("kernel26${_kernelname}-docs=${pkgver}" "linux${_kernelname}-docs=${pkgver}")
  conflicts=("kernel26${_kernelname}-docs" "kernel26-libre${_kernelname}-docs" "linux${_kernelname}-docs")
  replaces=("kernel26${_kernelname}-docs" "kernel26-libre${_kernelname}-docs" "linux${_kernelname}-docs")

  cd "${srcdir}/linux-${_basekernel}"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build"
  cp -al Documentation "${pkgdir}/usr/lib/modules/${_kernver}/build"
  find "${pkgdir}" -type f -exec chmod 444 {} \;
  find "${pkgdir}" -type d -exec chmod 755 {} \;

  # remove a file already in linux package
  rm -f "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/DocBook/Makefile"
}

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

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