# Maintainer: Sébastien Luttringer <seblu@aur.archlinux.org>
# Customized version of linux for seblu computers

shopt -s nullglob

pkgbase=linux-seblu
pkgname=$pkgbase
pkgver=3.3
pkgrel=1
[[ ${pkgver##*rc} != $pkgver ]] && testing='testing'
kernelver=${pkgver//_/-}
kernelsuf=${pkgbase#linux}
arch=('i686' 'x86_64')
license=('GPL2')
url='http://www.kernel.org'
options=('!strip')
makedepends=('xmlto' 'docbook-xsl')
source=(
  "http://www.kernel.org/pub/linux/kernel/v3.0/$testing/linux-${kernelver}.tar.xz"
  'config.x86_64'
  'config.i686'
  '01-ips-re-enable-cpu-turbo-and-clean-up-error-messages.patch'
)
# small hack to avoid makepkg to check checksum
SKIPCHECKSUMS=1

build() {
  msg2 "Kernel version: $kernelver"
  msg2 "Kernel suffix: $kernelsuf"

  cd linux-$kernelver

  if (( NOEXTRACT==0 )); then
    # patching sources
    for _f in ../*.patch; do
      msg2 "  Applying patch $(basename $_f)"
      patch -N -p1 -i "$_f"
    done

	  # loading default config
    # use make localmodconfig to check .config is correct
    msg2 'Copying config'
    install ../config.$CARCH .config

	  # removing last dot if zero
	  #sed -ri 's/^SUBLEVEL = 0$/SUBLEVEL =/' Makefile
  fi

	# updating suffixe in config (must be the right!)
	msg2 'Setting kernel suffix'
	sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${kernelsuf}\"|g" .config

  # define current build version
  echo $((pkgrel - 1)) > .version

  # Preapre compilation
  msg2 "Preparing compilation"
  yes "" | make config &>/dev/null
  nice -n 19 make prepare &>/dev/null
  cpucount=$(grep -c processor /proc/cpuinfo 2>/dev/null)
  jc=$((${cpucount:-1}))

  # Compiling sources
  msg2 "Compiling (jobs=$jc)"
  nice -n 19 make -j $jc bzImage modules
}

package() {
  cd linux-$kernelver
  # get real compiled kernel version
  compver=$(make kernelrelease)
  pkgname=linux-${compver}
  pkgdesc="The Linux Kernel, version $compver"
  provides=('linux' 'linux-headers' 'linux-docs')
  depends=('coreutils' 'linux-firmware' 'module-init-tools' 'mkinitcpio')
  install='install'

  sed -ri "s/pkgname=.*/pkgname='$pkgname'/" "$startdir/install"

  # installing modules
  install -d "$pkgdir"/{lib/modules,boot}
  make INSTALL_MOD_PATH="$pkgdir" modules_install

  # install kernel and map
  cp arch/x86/boot/bzImage "$pkgdir/boot/kernel-${compver}"

  # install mkinitcpio preset file for kernel
  install -d "${pkgdir}/etc/mkinitcpio.d/"
  cat > "${pkgdir}/etc/mkinitcpio.d/${pkgname}.preset" << EOF 
# mkinitcpio preset file for ${pkgname}

ALL_config="/etc/mkinitcpio.conf"
ALL_kver="/boot/kernel-${compver}"

PRESETS=('default' 'fallback')

#default_config="/etc/mkinitcpio.conf"
default_image="/boot/initramfs-${compver}.img"
#default_options=""

#fallback_config="/etc/mkinitcpio.conf"
fallback_image="/boot/initramfs-${compver}-fallback.img"
fallback_options="-S autodetect"
EOF

  # setup current version package (used by install script)
  install -d "${pkgdir}/usr/share/${pkgname}"
  cat > "${pkgdir}/usr/share/${pkgname}/info" << EOF
KERNEL_NAME=${pkgname}
KERNEL_VERSION=${kernelver}
KERNEL_SUFFIX=${kernelsuf}
KERNEL_BUILD=${compver}
EOF
  
  # remove build and source links
  rm -f "$pkgdir/lib/modules/$compver"/{source,build}

  # remove the firmware (avoiding conflict with 2.6
  rm -rf "$pkgdir/lib/firmware"
  
  # copy documentation
  install -d "$pkgdir/usr/src/linux-$compver"
  cp -r Documentation "$pkgdir/usr/src/linux-$compver"

  # copy headers
  copy_headers
  
  # check rights
  chown -R root.root "$pkgdir/usr/src/linux-$compver"
  chmod -R u=rwX,go=rX "$pkgdir/usr/src/linux-$compver"

  # gzip -9 all modules to safe 100MB of space
  find "$pkgdir" -name '*.ko' -exec gzip -9 {} \;
}

copy_headers() {
  install -d "$pkgdir/lib/modules/$compver"
  ln -sf ../../../usr/src/linux-$compver "$pkgdir/lib/modules/$compver/build"
  cd "$srcdir/linux-$kernelver"
  install -D -m644 Makefile "$pkgdir/usr/src/linux-$compver/Makefile"
  install -D -m644 kernel/Makefile "$pkgdir/usr/src/linux-$compver/kernel/Makefile"
  install -D -m644 .config "$pkgdir/usr/src/linux-$compver/.config"
  for i in localversion*; do
    install -m644 "$i" "$pkgdir/usr/src/linux-$compver/$i"
  done
  install -d "$pkgdir/usr/src/linux-$compver/include"

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

  # copy arch includes for external modules
  install -d "$pkgdir/usr/src/linux-$compver/arch/x86"
  cp -a arch/x86/include "$pkgdir/usr/src/linux-$compver/arch/x86/"

  # copy files necessary for later builds, like nvidia and vmware
  cp Module.symvers "$pkgdir/usr/src/linux-$compver"
  cp -a scripts "$pkgdir/usr/src/linux-$compver"
  # fix permissions on scripts dir
  chmod og-w -R "$pkgdir/usr/src/linux-$compver/scripts"
  install -d "$pkgdir/usr/src/linux-$compver/.tmp_versions"

  install -d "$pkgdir/usr/src/linux-$compver/arch/x86/kernel"

  cp arch/x86/Makefile "$pkgdir/usr/src/linux-$compver/arch/x86/"
  cp arch/x86/kernel/asm-offsets.s "$pkgdir/usr/src/linux-$compver/arch/x86/kernel/"

  # add headers for lirc package
  install -d "$pkgdir/usr/src/linux-$compver/drivers/media/video"
  cp drivers/media/video/*.h  "$pkgdir/usr/src/linux-$compver/drivers/media/video/"
  for i in bt8xx cpia2 cx25840 cx88 em28xx et61x251 pwc saa7134 sn9c102; do
   install -d "$pkgdir/usr/src/linux-$compver/drivers/media/video/$i"
   cp -a drivers/media/video/$i/*.h "$pkgdir/usr/src/linux-$compver/drivers/media/video/$i"
  done
  # add docbook makefile
  install -D -m644 Documentation/DocBook/Makefile \
    "$pkgdir/usr/src/linux-$compver/Documentation/DocBook/Makefile"
  # add dm headers
  install -d "$pkgdir/usr/src/linux-$compver/drivers/md"
  cp drivers/md/*.h  "$pkgdir/usr/src/linux-$compver/drivers/md"
  # add inotify.h
  install -d "$pkgdir/usr/src/linux-$compver/include/linux"
  cp include/linux/inotify.h "$pkgdir/usr/src/linux-$compver/include/linux/"
  # add wireless headers
  install -d "$pkgdir/usr/src/linux-$compver/net/mac80211/"
  cp net/mac80211/*.h "$pkgdir/usr/src/linux-$compver/net/mac80211/"
  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/9912
  install -d "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/dvb-core"
  cp drivers/media/dvb/dvb-core/*.h "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/dvb-core/"
  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/11194
  install -d "$pkgdir/usr/src/linux-$compver/include/config/dvb/"
  cp include/config/dvb/*.h "$pkgdir/usr/src/linux-$compver/include/config/dvb/"
  # add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
  # in reference to:
  # http://bugs.archlinux.org/task/13146
  install -d "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/frontends/"
  cp drivers/media/dvb/frontends/lgdt330x.h "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/frontends/"
  cp drivers/media/video/msp3400-driver.h "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/frontends/"
  # add dvb headers  
  # in reference to:
  # http://bugs.archlinux.org/task/20402
  install -d "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/dvb-usb"
  cp drivers/media/dvb/dvb-usb/*.h "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/dvb-usb/"
  install -d "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/frontends"
  cp drivers/media/dvb/frontends/*.h "$pkgdir/usr/src/linux-$compver/drivers/media/dvb/frontends/"
  install -d "$pkgdir/usr/src/linux-$compver/drivers/media/common/tuners"
  cp drivers/media/common/tuners/*.h "$pkgdir/usr/src/linux-$compver/drivers/media/common/tuners/"
  # add xfs and shmem for aufs building
  install -d "$pkgdir/usr/src/linux-$compver/fs/xfs"
  install -d "$pkgdir/usr/src/linux-$compver/mm"
  cp fs/xfs/xfs_sb.h "$pkgdir/usr/src/linux-$compver/fs/xfs/xfs_sb.h"
  # add headers vor virtualbox
  # in reference to:
  # http://bugs.archlinux.org/task/14568
  cp -a include/drm "$pkgdir/usr/src/linux-$compver/include/"
  # add headers for broadcom wl
  # in reference to:
  # http://bugs.archlinux.org/task/14568
  cp -a include/trace "$pkgdir/usr/src/linux-$compver/include/"
  # copy in Kconfig files
  for i in `find . -name "Kconfig*"`; do 
    install -d "$pkgdir/usr/src/linux-$compver"/$(echo $i | sed 's|/Kconfig.*||')
    cp "$i" "$pkgdir/usr/src/linux-$compver/$i"
  done

  # remove unneeded architectures
  rm -rf "$pkgdir/usr/src/linux-$compver/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}
}

# vim:set ts=2 sw=2 ft=sh et: