# $Id$
# Maintainer: Tobias Powalowski <tpowa@archlinux.org>
# Maintainer: Thomas Baechler <thomas@archlinux.org>
pkgbase="kernel26-libre"
pkgname=('kernel26-libre' 'kernel26-libre-headers' 'kernel26-libre-docs') # Build stock -LIBRE kernel

_kernelname=${pkgname#kernel26-libre}
_basekernel=2.6.38
pkgver=${_basekernel}.4
pkgrel=1
makedepends=('xmlto' 'docbook-xsl')
_patchname="patch-${pkgver}-${pkgrel}-LIBRE"
arch=(i686 x86_64 mips64el)
license=('GPL2')
url="http://linux-libre.fsfla.org/"
options=(!strip)
source=(http://linux-libre.fsfla.org/pub/linux-libre/releases/${pkgver}-libre/linux-${pkgver}-libre.tar.bz2
        http://linux-libre.fsfla.org/pub/linux-libre/lemote/gnewsense/pool/linux-patches-${pkgver}-libre-lemote_0lxo_mipsel.tar.bz2
        http://repo.parabolagnulinux.org/other/kernel26/${_patchname}.bz2
        # the main kernel config files
        config.i686 config.x86_64
        # standard config files for mkinitcpio ramdisk
        kernel26.preset
        kernel26.install
        Kbuild
        Kbuild.platforms)
md5sums=('0f1a5d184d4029c9d9b38a4b9407c392'
         'bff27ebb220bd720d622047174511d94'
         '8395aac2f31718b45afe57794c21ab81'
         'a6b673aead69b12f50b8ca53d1f14b14'
         'fa7d6abea1e2163b1ab2b1acfe117f51'
         '25584700a0a679542929c4bed31433b6'
         '2d68b4cf4caedd1f0188f4877eca1d43'
         '2967cecc3af9f954ccc822fd63dca6ff'
         '8267264d9a8966e57fdacd1fa1fc65c4')

build() {
  cd ${srcdir}/linux-$pkgver
  # Add -LIBRE patches
  # See http://projects.parabolagnulinux.org/linux-libre-2.6-LIBRE.git/
  patch -Np1 -i ${srcdir}/${_patchname}
  sed -i "s|^EXTRAVERSION.*|EXTRAVERSION = .${pkgver##*.}-libre|" Makefile

  if [ "$CARCH" == "mips64el" ]; then
    msg2 "Adding loongson-community patches"
    patch -Np1 -i ${srcdir}/$pkgver-*-loongson-community.patch
    patch -Np0 -i ${srcdir}/lxo-config.patch

# ensure N32
    sed -i "s|CONFIG_MIPS32_O32=.*|# CONFIG_MIPS32_O32 is not set|g" ./.config
    sed -i "s|CONFIG_MIPS32_N32=.*|CONFIG_MIPS32_N32=y|g" ./.config

# build with -Wno-error
    cp --remove-destination ${srcdir}/Kbuild arch/mips/
  else
    cat $srcdir/config.$CARCH > ./.config # simpler
  fi

  for this_doesnt_build in CONFIG_WLAGS49_H2 CONFIG_WLAGS49_H25; do
      sed -i "s|^${this_doesnt_build}=.*|# ${this_doesnt_build} is not set|g" ./.config
  done

  # Disable obnoxious kernel release names
  sed -i "s|EXTRAVERSION =.*|EXTRAVERSION =|g" ./Makefile
  sed -i "s|CONFIG_LOCALVERSION_AUTO=.*|# CONFIG_LOCALVERSION_AUTO is not set|g" ./.config

  if [ "${_kernelname}" != "" ]; then
    sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
  fi
  # 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
  ####################
  # stop here
  # this is useful to configure the kernel
  #msg "Stopping build"
  #return 1
  ####################
  yes "" | make config
  # build!
  if [ "$CARCH" == "mips64el" ]; then
    make ${MAKEFLAGS} vmlinuz modules
  else
    make ${MAKEFLAGS} bzImage modules
  fi
}

package_kernel26-libre() {
  pkgdesc="The Linux-libre Kernel and modules"
  groups=('base')
  backup=(etc/mkinitcpio.d/kernel26${_kernelname}.preset)
  depends=('coreutils' 'module-init-tools' 'mkinitcpio>=0.5.20')
  # pwc, ieee80211 and hostap-driver26 modules are included in kernel26 now
  # nforce package support was abandoned by nvidia, kernel modules should cover everything now.
  # kernel24 support is dropped since glibc24
  replaces=('kernel24' 'kernel24-scsi' 'kernel26-scsi'
            'alsa-driver' 'ieee80211' 'hostap-driver26'
            'pwc' 'nforce' 'squashfs' 'unionfs' 'ivtv'
            'zd1211' 'kvm-modules' 'iwlwifi' 'rt2x00-cvs'
            'gspcav1' 'atl2' 'wlan-ng26' 'rt2500' 'nouveau-drm' 'kernel26')
  provides=("kernel26=$pkgver")
  conflicts=('kernel26')
  install=kernel26.install
  optdepends=('crda: to set the correct wireless channels of your country')

  KARCH=x86
  [[ $CARCH = "mips64el" ]] && KARCH=mips
  cd ${srcdir}/linux-$pkgver
  # get kernel version
  _kernver="$(make kernelrelease)"
  mkdir -p ${pkgdir}/{lib/modules,lib/firmware,boot}
  make INSTALL_MOD_PATH=${pkgdir} modules_install
  cp System.map ${pkgdir}/boot/System.map26${_kernelname}

  if [ "$CARCH" == "mips64el" ]; then
    cp vmlinuz ${pkgdir}/boot/vmlinuz26${_kernelname}
  else
    cp arch/$KARCH/boot/bzImage ${pkgdir}/boot/vmlinuz26${_kernelname}
    install -m644 -D vmlinux.32 ${pkgdir}/usr/src/linux-${_kernver}/vmlinux32
  fi
  #  # add vmlinux
  install -m644 -D vmlinux ${pkgdir}/usr/src/linux-${_kernver}/vmlinux

  # install fallback mkinitcpio.conf file and preset file for kernel
  install -m644 -D ${srcdir}/kernel26.preset ${pkgdir}/etc/mkinitcpio.d/kernel26${_kernelname}.preset
  # set correct depmod command for install
  sed \
    -e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/g" \
    -e  "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/g" \
    -i $startdir/kernel26.install
  sed \
    -e "s|source .*|source /etc/mkinitcpio.d/kernel26${_kernelname}.kver|g" \
    -e "s|default_image=.*|default_image=\"/boot/kernel26${_kernelname}.img\"|g" \
    -e "s|fallback_image=.*|fallback_image=\"/boot/kernel26${_kernelname}-fallback.img\"|g" \
    -i ${pkgdir}/etc/mkinitcpio.d/kernel26${_kernelname}.preset

  echo -e "# DO NOT EDIT THIS FILE\nALL_kver='${_kernver}'" > ${pkgdir}/etc/mkinitcpio.d/kernel26${_kernelname}.kver
  # remove build and source links
  rm -f ${pkgdir}/lib/modules/${_kernver}/{source,build}
  # remove the firmware
  rm -rf ${pkgdir}/lib/firmware
  # gzip -9 all modules to safe 100MB of space
  find "$pkgdir" -name '*.ko' -exec gzip -9 {} \;
}

package_kernel26-libre-headers() {
  pkgdesc="Header files and scripts for building modules for kernel26-libre"
  provides=("kernel26-headers=$pkgver")
  replaces=('kernel26-headers')
  conflicts=('kernel26-headers')
  KARCH=x86
  [[ $CARCH = "mips64el" ]] && KARCH=mips
  cd ${srcdir}/linux-$pkgver
  _kernver="$(make kernelrelease)"
  mkdir -p ${pkgdir}/lib/modules/${_kernver}
  cd ${pkgdir}/lib/modules/${_kernver}
  ln -sf ../../../usr/src/linux-${_kernver} build
  cd ${srcdir}/linux-$pkgver
  install -D -m644 Makefile \
    ${pkgdir}/usr/src/linux-${_kernver}/Makefile
  install -D -m644 kernel/Makefile \
    ${pkgdir}/usr/src/linux-${_kernver}/kernel/Makefile
  install -D -m644 .config \
    ${pkgdir}/usr/src/linux-${_kernver}/.config
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/include

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

  # copy arch includes for external modules
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH
  cp -a arch/$KARCH/include ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
  if [ "$CARCH" = "mips64el" ]; then
    cp -a arch/$KARCH/Kbuild ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
    cp -a arch/$KARCH/loongson ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
    cp -a $srcdir/Kbuild.platforms ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
  fi

  # copy files necessary for later builds, like nvidia and vmware
  cp Module.symvers ${pkgdir}/usr/src/linux-${_kernver}
  cp -a scripts ${pkgdir}/usr/src/linux-${_kernver}
  # fix permissions on scripts dir
  chmod og-w -R ${pkgdir}/usr/src/linux-${_kernver}/scripts
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/.tmp_versions

  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/kernel

  cp arch/$KARCH/Makefile ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
  if [ "$CARCH" = "i686" ]; then
    cp arch/$KARCH/Makefile_32.cpu ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
  fi
  cp arch/$KARCH/kernel/asm-offsets.s ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/kernel/

  # add headers for lirc package
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video
  cp drivers/media/video/*.h  ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video/
  for i in bt8xx cpia2 cx25840 cx88 em28xx et61x251 pwc saa7134 sn9c102; do
   mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video/$i
   cp -a drivers/media/video/$i/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video/$i
  done
  if [ "$CARCH" != "mips64el" ]; then
    mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/staging/usbvideo/
    cp -a drivers/staging/usbvideo/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/staging/usbvideo/
  fi
  # add docbook makefile
  install -D -m644 Documentation/DocBook/Makefile \
    ${pkgdir}/usr/src/linux-${_kernver}/Documentation/DocBook/Makefile
  # add dm headers
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/md
  cp drivers/md/*.h  ${pkgdir}/usr/src/linux-${_kernver}/drivers/md
  # add inotify.h
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/include/linux
  cp include/linux/inotify.h ${pkgdir}/usr/src/linux-${_kernver}/include/linux/
  # add wireless headers
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/net/mac80211/
  cp net/mac80211/*.h ${pkgdir}/usr/src/linux-${_kernver}/net/mac80211/
  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/9912
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core
  cp drivers/media/dvb/dvb-core/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core/
  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/11194
  if [ "$CARCH" != "mips64el" ]; then
    mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/
    cp include/config/dvb/*.h ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/
  fi
  # add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
  # in reference to:
  # http://bugs.archlinux.org/task/13146
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/
  cp drivers/media/dvb/frontends/lgdt330x.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/
  cp drivers/media/video/msp3400-driver.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/
  # add dvb headers  
  # in reference to:
  # http://bugs.archlinux.org/task/20402
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-usb
  cp drivers/media/dvb/dvb-usb/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-usb/
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends
  cp drivers/media/dvb/frontends/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/common/tuners
  cp drivers/media/common/tuners/*.h ${pkgdir}/usr/src/linux-${_kernver}/drivers/media/common/tuners/
  # add xfs and shmem for aufs building
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/fs/xfs
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/mm
  cp fs/xfs/xfs_sb.h ${pkgdir}/usr/src/linux-${_kernver}/fs/xfs/xfs_sb.h
  # copy in Kconfig files
  for i in `find . -name "Kconfig*"`; do 
    mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/`echo $i | sed 's|/Kconfig.*||'`
    cp $i ${pkgdir}/usr/src/linux-${_kernver}/$i
  done

  chown -R root.root ${pkgdir}/usr/src/linux-${_kernver}
  find ${pkgdir}/usr/src/linux-${_kernver} -type d -exec chmod 755 {} \;
  # strip scripts directory
  find ${pkgdir}/usr/src/linux-${_kernver}/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 ${pkgdir}/usr/src/linux-${_kernver}/arch/{alpha,arm,arm26,avr32,blackfin,cris,frv,h8300,ia64,m32r,m68k,m68knommu,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,xtensa}
  if [ "$CARCH" = "mips64el" ]; then
    rm -rf ${pkgdir}/usr/src/linux-${_kernver}/arch/x86
  else
    rm -rf ${pkgdir}/usr/src/linux-${_kernver}/arch/mips
  fi
}

package_kernel26-libre-docs() {
pkgdesc="Kernel hackers manual - HTML documentation that comes with the Linux kernel."
provides=("kernel26-docs=$pkgver")
replaces=('kernel26-docs')
conflicts=('kernel26-docs')

cd ${srcdir}/linux-$pkgver
mkdir -p $pkgdir/usr/src/linux-$_kernver
mv Documentation $pkgdir/usr/src/linux-$_kernver
find $pkgdir -type f -exec chmod 444 {} \;
find $pkgdir -type d -exec chmod 755 {} \;
# remove a file already in kernel26 package
rm -f $pkgdir/usr/src/linux-$_kernver/Documentation/DocBook/Makefile
}