kvm/kernel/configure

   1 #!/bin/bash
   2
   3 kernelsourcedir=
   4 kerneldir=/lib/modules/$(uname -r)/build
   5 cc=gcc
   6 ld=ld
   7 objcopy=objcopy
   8 ar=ar
   9 want_module=1
  10 kvm_trace=
  11 cross_prefix=
  12 arch=`uname -m`
  13 # don't use uname if kerneldir is set
  14 no_uname=
  15 depmod_version=
  16 if [ -z "TMPDIR" ] ; then
  17     TMPDIR=.
  18 fi
  19
  20 usage() {
  21     cat <<-EOF
  22         Usage: $0 [options]
  23
  24         Options include:
  25             --arch=ARCH            architecture to compile for ($arch)
  26             --cross-prefix=PREFIX  prefix for cross compile
  27             --with-kvm-trace       Enable kvm_trace
  28             --kerneldir=DIR        kernel build directory ($kerneldir)
  29             --help                 this helpful text
  30 EOF
  31     exit 1
  32 }
  33
  34 while [[ "$1" = -* ]]; do
  35     opt="$1"; shift
  36     arg=
  37     hasarg=
  38     if [[ "$opt" = *=* ]]; then
  39         arg="${opt#*=}"
  40         opt="${opt%%=*}"
  41         hasarg=1
  42     fi
  43     case "$opt" in
  44         --kerneldir)
  45             kerneldir="$arg"
  46             no_uname=1
  47             ;;
  48         --with-patched-kernel)
  49             want_module=
  50             ;;
  51         --with-kvm-trace)
  52             kvm_trace=y
  53             ;;
  54         --arch)
  55             arch="$arg"
  56             ;;
  57         --cross-prefix)
  58             cross_prefix="$arg"
  59             ;;
  60         --help)
  61             usage
  62             ;;
  63         *)
  64             usage
  65             ;;
  66     esac
  67 done
  68
  69 case $arch in
  70     i?86*|x86_64*)
  71         arch=${arch/#i?86/i386}
  72         ;;
  73 esac
  74
  75 processor=${arch#*-}
  76 arch=${arch%%-*}
  77
  78 # see if we have split build and source directories
  79 if [ -d "$kerneldir/include2" ]; then
  80     kernelsourcedir=${kerneldir%/*}/source
  81 fi
  82
  83 if [ -n "$no_uname" ]; then
  84     if [ -e "$kerneldir/.kernelrelease" ]; then
  85         depmod_version=`cat "$kerneldir/.kernelrelease"`
  86
  87     elif [ -e "$kerneldir/include/config/kernel.release" ]; then
  88             depmod_version=`cat "$kerneldir/include/config/kernel.release"`
  89     elif [ -e "$kerneldir/.config" ]; then
  90         depmod_version=$(awk '/Linux kernel version:/ { print $NF }' \
  91                          "$kerneldir/.config")
  92     else
  93         echo
  94         echo "Error: kernelversion not found"
  95         echo "Please make sure your kernel is configured"
  96         echo
  97         exit 1
  98     fi
  99 fi
 100
 101 cat <<EOF > config.mak
 102 ARCH=$arch
 103 PROCESSOR=$processor
 104 PREFIX=$prefix
 105 KERNELDIR=$kerneldir
 106 KERNELSOURCEDIR=$kernelsourcedir
 107 CROSS_COMPILE=$cross_prefix
 108 CC=$cross_prefix$cc
 109 LD=$cross_prefix$ld
 110 OBJCOPY=$cross_prefix$objcopy
 111 AR=$cross_prefix$ar
 112 DEPMOD_VERSION=$depmod_version
 113 EOF
 114
 115 cat <<EOF > config.kbuild
 116 EXT_CONFIG_KVM_TRACE=$kvm_trace
 117 EOF