config/chroot_local-hooks/50-virtualbox

   1 #!/bin/sh
   2
   3 set -e
   4
   5 echo "Building VirtualBox guest modules"
   6
   7 hw_arch="`dpkg --print-architecture`"
   8 if [ "$hw_arch" != i386 -a "$hw_arch" != amd64 ]; then
   9    exit 0
  10 fi
  11
  12 available_gcc_version=4.4
  13 wanted_gcc_version=4.6
  14
  15 # the -dkms package must be installed *after* dkms to be properly registered
  16 apt-get install --yes build-essential dkms dpatch
  17
  18 # temporary workaround: pretend the "wanted" GCC is available, so that
  19 # the modules can build.
  20 # /usr/src/linux-headers-3.*-common/scripts/gcc-version.sh
  21 # is the one who says they should be run using that version.
  22 apt-get install --yes gcc-${available_gcc_version}
  23 ln -s /usr/bin/gcc-${available_gcc_version} /usr/bin/gcc-${wanted_gcc_version}
  24
  25 # At this time of the build, we've got a recent enough X.Org installed,
  26 # so we can install the X11 tools eventually.
  27 dpkg --install \
  28    /usr/share/amnesia/packages/virtualbox-guest-utils_*.deb \
  29    /usr/share/amnesia/packages/virtualbox-guest-x11_*.deb
  30
  31 # Have the modules built for every installed kernel
  32 for KERNEL in /boot/vmlinuz-* ; do
  33    KERNEL_VERSION="$(basename ${KERNEL} | sed -e 's|vmlinuz-||')"
  34    VERSION_SCHEME="[[:digit:]]\+\(\.[[:digit:]]\+\)*-[[:digit:]]\+"
  35    KERNEL_ARCH="$(echo ${KERNEL_VERSION} | sed -e "s|${VERSION_SCHEME}-||")"
  36
  37    # dkms uses uname to find out what kernel to build modules for.
  38    # So, after installing dkms, but before installing
  39    # virtualbox-guest-dkms, we divert uname to a fake one that
  40    # emulates 'uname -r' by reporting the kernel version found in /boot rather
  41    # than the build system's one.
  42
  43    mv /bin/uname /bin/uname.$$
  44    cat > /bin/uname <<EOF
  45 #! /bin/sh
  46 echo "$KERNEL_VERSION"
  47 EOF
  48    chmod 755 /bin/uname
  49
  50    # Install the headers for the kernel we are build modules for
  51    apt-get install --yes linux-headers-$(uname -r)
  52
  53    # Have the modules automagically built by dkms for all kernels.
  54    dpkg --install /usr/share/amnesia/packages/virtualbox-guest-dkms_*.deb
  55    apt-get -f install --yes
  56
  57    # Revert to the real uname.
  58    mv /bin/uname.$$ /bin/uname
  59 done
  60
  61 # clean the build directory
  62 rm -r /var/lib/dkms/virtualbox-guest/
  63
  64 # virtualbox-guest-dkms's postrm script deletes any previously
  65 # built binary module; let's delete it before purging the package.
  66 rm /var/lib/dpkg/info/virtualbox-guest-dkms.prerm
  67
  68 # remove temporary workaround
  69 rm /usr/bin/gcc-${wanted_gcc_version}