# Maintainer: Andreas Radke <andyrtr at archlinux.org>

pkgname=kernel26-lts
_kernelname=${pkgname#kernel26}
_basekernel=2.6.27
pkgver=${_basekernel}.35
pkgrel=1
pkgdesc="The Linux Kernel and modules - stable longtime supported kernel package suitable for servers"
arch=('i686' 'x86_64')
license=('GPL2')
url="http://www.kernel.org"
backup=(etc/mkinitcpio.d/${pkgname}.preset)
depends=('coreutils' 'kernel26-firmware>=2.6.27' 'module-init-tools' 'mkinitcpio>=0.5.20')
install=${pkgname}.install
source=(ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-$_basekernel.tar.bz2
        ftp://ftp.kernel.org/pub/linux/kernel/v2.6/patch-$pkgver.bz2
	# the main kernel config files
        config config.x86_64
        # standard config files for mkinitcpio ramdisk
        ${pkgname}.preset
	# ext4 patches from Fedora
	#http://cvs.fedoraproject.org/viewvc/rpms/kernel/F-10/?pathrev=kernel-2_6_27_29-170_2_79_fc10
	linux-2.6.27-ext4-rename-ext4dev-to-ext4.patch
	linux-2.6.27.9-ext4-cap-check-delay.patch)
md5sums=('b3e78977aa79d3754cb7f8143d7ddabd'
         '6d49b54ff6ed54896db5d9e2ab7a6c0c'
         '4e11657846beba397a004e81fa70ec9d'
         '8390d0e61bbe4873cc690160b1e0a346'
         'a13338958d1b241f8dfd4c6014cad3d4'
         '659953c9c437d311bf93eff505ef8e67'
         '8cd12e9727d9221aacfa52ad9b9a42f9')

build() {
  KARCH=x86

  cd ${srcdir}/linux-$_basekernel
   if [ "$_basekernel" != "$pkgver" ]; then
     # add latest kernel stable patch
     patch -Np1 -i ${srcdir}/patch-$pkgver
   fi

  # add full ext4 support
  patch -Np1 -i ${srcdir}/linux-2.6.27-ext4-rename-ext4dev-to-ext4.patch || return 1
  patch -Np1 -i ${srcdir}/linux-2.6.27.9-ext4-cap-check-delay.patch || return 1

  if [ "$CARCH" = "x86_64" ]; then
    cat ../config.x86_64 >./.config
  else
    cat ../config >./.config
  fi
  if [ "${_kernelname}" != "" ]; then
    sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
  fi
  # get kernel version  
  make prepare
  _kernver="$(make kernelrelease)"
  # load configuration
  # Configure the kernel. Replace the line below with one of your choice.
  #make menuconfig # 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!
  make bzImage modules || return 1
  mkdir -p ${pkgdir}/{lib/modules,boot}
  make INSTALL_MOD_PATH=${pkgdir} modules_install || return 1
  cp System.map ${pkgdir}/boot/System.map26${_kernelname}
  cp arch/$KARCH/boot/bzImage ${pkgdir}/boot/vmlinuz26${_kernelname}
  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,x86} config linux math-emu media net pcmcia scsi sound video; do
    cp -a include/$i ${pkgdir}/usr/src/linux-${_kernver}/include/
  done

  # 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 usbvideo zc0301; 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
  # 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
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/
  cp include/config/dvb/*.h ${pkgdir}/usr/src/linux-${_kernver}/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 ${pkgdir}/usr/src/linux-${_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 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
  # add headers vor virtualbox
  # in reference to:
  # http://bugs.archlinux.org/task/14568
  cp -a include/drm $pkgdir/usr/src/linux-${_kernver}/include/
  
  
  # add vmlinux
  cp vmlinux ${pkgdir}/usr/src/linux-${_kernver}
  # 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

  cd ${pkgdir}/usr/src/linux-${_kernver}/include && ln -s asm-$KARCH asm

  chown -R root.root ${pkgdir}/usr/src/linux-${_kernver}
  find ${pkgdir}/usr/src/linux-${_kernver} -type d -exec chmod 755 {} \;
  cd ${pkgdir}/lib/modules/${_kernver} && \
    (rm -f source build; ln -sf ../../../usr/src/linux-${_kernver} build)
  # install fallback mkinitcpio.conf file and preset file for kernel
  install -m644 -D ${srcdir}/${pkgname}.preset ${pkgdir}/etc/mkinitcpio.d/${pkgname}.preset || return 1
  # set correct depmod command for install
  sed \
    -e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/g" \
    -e  "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/g" \
    -i $startdir/${pkgname}.install
  sed \
    -e "s|source .*|source /etc/mkinitcpio.d/kernel26${_kernelname}.kver|g" \
    -e "s|default_image=.*|default_image=\"/boot/${pkgname}.img\"|g" \
    -e "s|fallback_image=.*|fallback_image=\"/boot/${pkgname}-fallback.img\"|g" \
    -i ${pkgdir}/etc/mkinitcpio.d/${pkgname}.preset

  echo -e "# DO NOT EDIT THIS FILE\nALL_kver='${_kernver}'" > ${startdir}/pkg/etc/mkinitcpio.d/${pkgname}.kver
  # remove unneeded architectures
  rm -rf ${pkgdir}/usr/src/linux-${_kernver}/arch/{alpha,arm,arm26,avr32,blackfin,cris,frv,h8300,ia64,m32r,m68k,m68knommu,mips,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,xtensa}
  # remove the firmware
  rm -rf ${pkgdir}/lib/firmware
}