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# $Id: PKGBUILD 130991 2011-07-09 12:23:51Z thomas $
# Maintainer: Tobias Powalowski <tpowa@archlinux.org>
# Maintainer: Thomas Baechler <thomas@archlinux.org>
# Maintainer (Parabola: Nicolás Reynolds <fauno@kiwwwi.com.ar>
pkgbase="linux-libre"
pkgname=('linux-libre' 'linux-libre-headers' 'linux-libre-docs') # Build stock -LIBRE kernel
# pkgname=linux-custom       # Build kernel with a different name
_kernelname=${pkgname#linux-libre}
_basekernel=3.0
pkgver=${_basekernel}
pkgrel=2
makedepends=('xmlto' 'docbook-xsl')
arch=(i686 x86_64)
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.xz
        # the main kernel config files
        config.i686 config.x86_64
        # standard config files for mkinitcpio ramdisk
        ${pkgname}.preset
        boot-logo.patch
        fix-i915.patch)
md5sums=('44e7bc20c235a193f9b6123a8d5e9509'
         'd4805e76a2b0c883ed8269f3dad601fb'
         'fbefcac9fecd28e4d2e12dbee77f6602'
         '18341549f090fc403d7f4c47fff395a4'
         '04b21c79df0a952c22d681dd4f4562df'
         'fe04ae7274a1f76ba2a8054aec60ef08')

build() {

  cd ${srcdir}/linux-$pkgver
  #patch -p1 -i ${srcdir}/patch-${pkgver}
  
  # fix #19234 i1915 display size
  patch -Np1 -i ${srcdir}/fix-i915.patch

# Add freedo as boot logo
  patch -Np1 -i ${srcdir}/boot-logo.patch

  cat $srcdir/config.$CARCH > ./.config # simpler

  if [ "${_kernelname}" != "" ]; then
    sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
  fi
  # remove the extraversion from Makefile
  # this ensures our kernel version is always 3.X-LIBRE
  # this way, minor kernel updates will not break external modules
  # we need to change this soon, see FS#16702
  sed -i 's|^EXTRAVERSION =.*$|EXTRAVERSION =|g' Makefile
  # 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!
  make ${MAKEFLAGS} bzImage modules
}

package_linux-libre() {
  pkgdesc="The Linux-libre Kernel and modules"
  groups=('base')
  backup=(etc/mkinitcpio.d/${pkgname}.preset)
  depends=('coreutils' 'module-init-tools>=3.16' 'mkinitcpio>=0.7')
  provides=('kernel26' "linux=$pkgver")
  conflicts=('kernel26' 'linux')
  replaces=('kernel26' 'linux')
  install=${pkgname}.install
  optdepends=('crda: to set the correct wireless channels of your country')

  KARCH=x86
  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 arch/$KARCH/boot/bzImage ${pkgdir}/boot/vmlinuz-${pkgname}
  # 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 ${srcdir}/${pkgname}.preset ${pkgdir}/etc/mkinitcpio.d/${pkgname}.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 $startdir/${pkgname}.install
  sed \
    -e "s|default_image=.*|default_image=\"/boot/initramfs-${pkgname}.img\"|g" \
    -e "s|fallback_image=.*|fallback_image=\"/boot/initramfs-${pkgname}-fallback.img\"|g" \
    -i ${pkgdir}/etc/mkinitcpio.d/${pkgname}.preset

  # remove build and source links
  rm -f ${pkgdir}/lib/modules/${_kernver}/{source,build}
  # add compat symlink for the kernel image
  ln -sf vmlinuz-${pkgname} ${pkgdir}/boot/vmlinuz26${_kernelname}
  # 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_linux-libre-headers() {
  pkgdesc="Header files and scripts for building modules for linux-libre kernel"
  provides=('kernel26-headers' "linux-headers=$pkgver")
  conflicts=('kernel26-headers' 'linux-headers')
  replaces=('kernel26-headers' 'linux-headers')
  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/x86
  cp -a arch/x86/include ${pkgdir}/usr/src/linux-${_kernver}/arch/x86/

  # 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
  # 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 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,mips,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,xtensa}
}

package_linux-libre-docs() {
  pkgdesc="Kernel hackers manual - HTML documentation that comes with the Linux-libre kernel."
  provides=('kernel26-docs' "linux-docs=$pkgver")
  conflicts=('kernel26-docs' 'linux-docs')
  replaces=('kernel26-docs' 'linux-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 linux package
  rm -f $pkgdir/usr/src/linux-$_kernver/Documentation/DocBook/Makefile
}