Archipelago » qemu

#!/bin/sh

#

# qemu configure script (c) 2003 Fabrice Bellard

#

# set temporary file name

if test ! -z "$TMPDIR" ; then

    TMPDIR1="${TMPDIR}"

elif test ! -z "$TEMPDIR" ; then

    TMPDIR1="${TEMPDIR}"

else

    TMPDIR1="/tmp"

fi

TMPC="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.c"

TMPO="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.o"

TMPE="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.exe"

# NB: do not call "exit" in the trap handler; this is buggy with some shells;

# see <1285349658-3122-1-git-send-email-loic.minier@linaro.org>

trap "rm -f $TMPC $TMPO $TMPE" EXIT INT QUIT TERM

rm -f config.log

# Print a helpful header at the top of config.log

echo "# QEMU configure log $(date)" >> config.log

printf "# Configured with:" >> config.log

printf " '%s'" "$0" "$@" >> config.log

echo >> config.log

echo "#" >> config.log

error_exit() {

    echo

    echo "ERROR: $1"

    while test -n "$2"; do

        echo "       $2"

        shift

    done

    echo

    exit 1

}

do_cc() {

    # Run the compiler, capturing its output to the log.

    echo $cc "$@" >> config.log

    $cc "$@" >> config.log 2>&1 || return $?

    # Test passed. If this is an --enable-werror build, rerun

    # the test with -Werror and bail out if it fails. This

    # makes warning-generating-errors in configure test code

    # obvious to developers.

    if test "$werror" != "yes"; then

        return 0

    fi

    # Don't bother rerunning the compile if we were already using -Werror

    case "$*" in

        *-Werror*)

           return 0

        ;;

    esac

    echo $cc -Werror "$@" >> config.log

    $cc -Werror "$@" >> config.log 2>&1 && return $?

    error_exit "configure test passed without -Werror but failed with -Werror." \

        "This is probably a bug in the configure script. The failing command" \

        "will be at the bottom of config.log." \

        "You can run configure with --disable-werror to bypass this check."

}

compile_object() {

  do_cc $QEMU_CFLAGS -c -o $TMPO $TMPC

}

compile_prog() {

  local_cflags="$1"

  local_ldflags="$2"

  do_cc $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC $LDFLAGS $local_ldflags

}

# symbolically link $1 to $2.  Portable version of "ln -sf".

symlink() {

  rm -rf "$2"

  mkdir -p "$(dirname "$2")"

  ln -s "$1" "$2"

}

# check whether a command is available to this shell (may be either an

# executable or a builtin)

has() {

    type "$1" >/dev/null 2>&1

}

# search for an executable in PATH

path_of() {

    local_command="$1"

    local_ifs="$IFS"

    local_dir=""

    # pathname has a dir component?

    if [ "${local_command#*/}" != "$local_command" ]; then

        if [ -x "$local_command" ] && [ ! -d "$local_command" ]; then

            echo "$local_command"

            return 0

        fi

    fi

    if [ -z "$local_command" ]; then

        return 1

    fi

    IFS=:

    for local_dir in $PATH; do

        if [ -x "$local_dir/$local_command" ] && [ ! -d "$local_dir/$local_command" ]; then

            echo "$local_dir/$local_command"

            IFS="${local_ifs:-$(printf ' \t\n')}"

            return 0

        fi

    done

    # not found

    IFS="${local_ifs:-$(printf ' \t\n')}"

    return 1

}

# default parameters

source_path=`dirname "$0"`

cpu=""

interp_prefix="/usr/gnemul/qemu-%M"

static="no"

cross_prefix=""

audio_drv_list=""

audio_card_list="ac97 es1370 sb16 hda"

audio_possible_cards="ac97 es1370 sb16 cs4231a adlib gus hda"

block_drv_whitelist=""

host_cc="cc"

libs_softmmu=""

libs_tools=""

audio_pt_int=""

audio_win_int=""

cc_i386=i386-pc-linux-gnu-gcc

libs_qga=""

debug_info="yes"

# Don't accept a target_list environment variable.

unset target_list

# Default value for a variable defining feature "foo".

#  * foo="no"  feature will only be used if --enable-foo arg is given

#  * foo=""    feature will be searched for, and if found, will be used

#              unless --disable-foo is given

#  * foo="yes" this value will only be set by --enable-foo flag.

#              feature will searched for,

#              if not found, configure exits with error

#

# Always add --enable-foo and --disable-foo command line args.

# Distributions want to ensure that several features are compiled in, and it

# is impossible without a --enable-foo that exits if a feature is not found.

bluez=""

brlapi=""

curl=""

curses=""

docs=""

fdt=""

nptl=""

pixman=""

sdl=""

virtfs=""

vnc="yes"

sparse="no"

uuid=""

vde=""

vnc_tls=""

vnc_sasl=""

vnc_jpeg=""

vnc_png=""

vnc_ws=""

xen=""

xen_ctrl_version=""

xen_pci_passthrough=""

linux_aio=""

cap_ng=""

attr=""

libattr=""

xfs=""

vhost_net="no"

kvm="no"

gprof="no"

debug_tcg="no"

debug="no"

strip_opt="yes"

tcg_interpreter="no"

bigendian="no"

mingw32="no"

gcov="no"

gcov_tool="gcov"

EXESUF=""

prefix="/usr/local"

mandir="\${prefix}/share/man"

datadir="\${prefix}/share"

qemu_docdir="\${prefix}/share/doc/qemu"

bindir="\${prefix}/bin"

libdir="\${prefix}/lib"

libexecdir="\${prefix}/libexec"

includedir="\${prefix}/include"

sysconfdir="\${prefix}/etc"

local_statedir="\${prefix}/var"

confsuffix="/qemu"

slirp="yes"

fmod_lib=""

fmod_inc=""

oss_lib=""

bsd="no"

linux="no"

solaris="no"

profiler="no"

cocoa="no"

softmmu="yes"

linux_user="no"

bsd_user="no"

guest_base="yes"

uname_release=""

mixemu="no"

aix="no"

blobs="yes"

pkgversion=""

pie=""

zero_malloc=""

trace_backend="nop"

trace_file="trace"

spice=""

rbd=""

smartcard_nss=""

libusb=""

usb_redir=""

glx=""

zlib="yes"

guest_agent="yes"

want_tools="yes"

libiscsi=""

coroutine=""

seccomp=""

glusterfs=""

virtio_blk_data_plane=""

gtk=""

gtkabi="2.0"

tpm="no"

libssh2=""

# parse CC options first

for opt do

  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`

  case "$opt" in

  --cross-prefix=*) cross_prefix="$optarg"

  ;;

  --cc=*) CC="$optarg"

  ;;

  --source-path=*) source_path="$optarg"

  ;;

  --cpu=*) cpu="$optarg"

  ;;

  --extra-cflags=*) QEMU_CFLAGS="$optarg $QEMU_CFLAGS"

                    EXTRA_CFLAGS="$optarg"

  ;;

  --extra-ldflags=*) LDFLAGS="$optarg $LDFLAGS"

                     EXTRA_LDFLAGS="$optarg"

  ;;

  --enable-debug-info) debug_info="yes"

  ;;

  --disable-debug-info) debug_info="no"

  ;;

  esac

done

# OS specific

# Using uname is really, really broken.  Once we have the right set of checks

# we can eliminate its usage altogether.

# Preferred compiler:

#  ${CC} (if set)

#  ${cross_prefix}gcc (if cross-prefix specified)

#  system compiler

if test -z "${CC}${cross_prefix}"; then

  cc="$host_cc"

else

  cc="${CC-${cross_prefix}gcc}"

fi

ar="${AR-${cross_prefix}ar}"

as="${AS-${cross_prefix}as}"

cpp="${CPP-$cc -E}"

objcopy="${OBJCOPY-${cross_prefix}objcopy}"

ld="${LD-${cross_prefix}ld}"

libtool="${LIBTOOL-${cross_prefix}libtool}"

strip="${STRIP-${cross_prefix}strip}"

windres="${WINDRES-${cross_prefix}windres}"

pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"

query_pkg_config() {

    "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"

}

pkg_config=query_pkg_config

sdl_config="${SDL_CONFIG-${cross_prefix}sdl-config}"

# default flags for all hosts

QEMU_CFLAGS="-fno-strict-aliasing $QEMU_CFLAGS"

QEMU_CFLAGS="-Wall -Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"

QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"

QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"

QEMU_INCLUDES="-I. -I\$(SRC_PATH) -I\$(SRC_PATH)/include"

if test "$debug_info" = "yes"; then

    CFLAGS="-g $CFLAGS"

    LDFLAGS="-g $LDFLAGS"

fi

# make source path absolute

source_path=`cd "$source_path"; pwd`

check_define() {

cat > $TMPC <<EOF

#if !defined($1)

#error $1 not defined

#endif

int main(void) { return 0; }

EOF

  compile_object

}

if check_define __linux__ ; then

  targetos="Linux"

elif check_define _WIN32 ; then

  targetos='MINGW32'

elif check_define __OpenBSD__ ; then

  targetos='OpenBSD'

elif check_define __sun__ ; then

  targetos='SunOS'

elif check_define __HAIKU__ ; then

  targetos='Haiku'

else

  targetos=`uname -s`

fi

# Some host OSes need non-standard checks for which CPU to use.

# Note that these checks are broken for cross-compilation: if you're

# cross-compiling to one of these OSes then you'll need to specify

# the correct CPU with the --cpu option.

case $targetos in

Darwin)

  # on Leopard most of the system is 32-bit, so we have to ask the kernel if we can

  # run 64-bit userspace code.

  # If the user didn't specify a CPU explicitly and the kernel says this is

  # 64 bit hw, then assume x86_64. Otherwise fall through to the usual detection code.

  if test -z "$cpu" && test "$(sysctl -n hw.optional.x86_64)" = "1"; then

    cpu="x86_64"

  fi

  ;;

SunOS)

  # `uname -m` returns i86pc even on an x86_64 box, so default based on isainfo

  if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then

    cpu="x86_64"

  fi

esac

if test ! -z "$cpu" ; then

  # command line argument

  :

elif check_define __i386__ ; then

  cpu="i386"

elif check_define __x86_64__ ; then

  cpu="x86_64"

elif check_define __sparc__ ; then

  if check_define __arch64__ ; then

    cpu="sparc64"

  else

    cpu="sparc"

  fi

elif check_define _ARCH_PPC ; then

  if check_define _ARCH_PPC64 ; then

    cpu="ppc64"

  else

    cpu="ppc"

  fi

elif check_define __mips__ ; then

  cpu="mips"

elif check_define __ia64__ ; then

  cpu="ia64"

elif check_define __s390__ ; then

  if check_define __s390x__ ; then

    cpu="s390x"

  else

    cpu="s390"

  fi

elif check_define __arm__ ; then

  cpu="arm"

elif check_define __hppa__ ; then

  cpu="hppa"

else

  cpu=`uname -m`

fi

ARCH=

# Normalise host CPU name and set ARCH.

# Note that this case should only have supported host CPUs, not guests.

case "$cpu" in

  ia64|ppc|ppc64|s390|s390x|sparc64)

    cpu="$cpu"

  ;;

  i386|i486|i586|i686|i86pc|BePC)

    cpu="i386"

  ;;

  x86_64|amd64)

    cpu="x86_64"

  ;;

  armv*b|armv*l|arm)

    cpu="arm"

  ;;

  hppa|parisc|parisc64)

    cpu="hppa"

  ;;

  mips*)

    cpu="mips"

  ;;

  sparc|sun4[cdmuv])

    cpu="sparc"

  ;;

  *)

    # This will result in either an error or falling back to TCI later

    ARCH=unknown

  ;;

esac

if test -z "$ARCH"; then

  ARCH="$cpu"

fi

# OS specific

case $targetos in

CYGWIN*)

  mingw32="yes"

  QEMU_CFLAGS="-mno-cygwin $QEMU_CFLAGS"

  audio_possible_drivers="winwave sdl"

  audio_drv_list="winwave"

;;

MINGW32*)

  mingw32="yes"

  audio_possible_drivers="winwave dsound sdl fmod"

  audio_drv_list="winwave"

;;

GNU/kFreeBSD)

  bsd="yes"

  audio_drv_list="oss"

  audio_possible_drivers="oss sdl esd pa"

;;

FreeBSD)

  bsd="yes"

  make="${MAKE-gmake}"

  audio_drv_list="oss"

  audio_possible_drivers="oss sdl esd pa"

  # needed for kinfo_getvmmap(3) in libutil.h

  LIBS="-lutil $LIBS"

;;

DragonFly)

  bsd="yes"

  make="${MAKE-gmake}"

  audio_drv_list="oss"

  audio_possible_drivers="oss sdl esd pa"

;;

NetBSD)

  bsd="yes"

  make="${MAKE-gmake}"

  audio_drv_list="oss"

  audio_possible_drivers="oss sdl esd"

  oss_lib="-lossaudio"

;;

OpenBSD)

  bsd="yes"

  make="${MAKE-gmake}"

  audio_drv_list="oss"

  audio_possible_drivers="oss sdl esd"

  oss_lib="-lossaudio"

;;

Darwin)

  bsd="yes"

  darwin="yes"

  if [ "$cpu" = "x86_64" ] ; then

    QEMU_CFLAGS="-arch x86_64 $QEMU_CFLAGS"

    LDFLAGS="-arch x86_64 $LDFLAGS"

  else

    QEMU_CFLAGS="-mdynamic-no-pic $QEMU_CFLAGS"

  fi

  cocoa="yes"

  audio_drv_list="coreaudio"

  audio_possible_drivers="coreaudio sdl fmod"

  LDFLAGS="-framework CoreFoundation -framework IOKit $LDFLAGS"

  libs_softmmu="-F/System/Library/Frameworks -framework Cocoa -framework IOKit $libs_softmmu"

  # Disable attempts to use ObjectiveC features in os/object.h since they

  # won't work when we're compiling with gcc as a C compiler.

  QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"

;;

SunOS)

  solaris="yes"

  make="${MAKE-gmake}"

  install="${INSTALL-ginstall}"

  ld="gld"

  smbd="${SMBD-/usr/sfw/sbin/smbd}"

  needs_libsunmath="no"

  solarisrev=`uname -r | cut -f2 -d.`

  if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then

    if test "$solarisrev" -le 9 ; then

      if test -f /opt/SUNWspro/prod/lib/libsunmath.so.1; then

        needs_libsunmath="yes"

        QEMU_CFLAGS="-I/opt/SUNWspro/prod/include/cc $QEMU_CFLAGS"

        LDFLAGS="-L/opt/SUNWspro/prod/lib -R/opt/SUNWspro/prod/lib $LDFLAGS"

        LIBS="-lsunmath $LIBS"

      else

        error_exit "QEMU will not link correctly on Solaris 8/X86 or 9/x86 without" \

            "libsunmath from the Sun Studio compilers tools, due to a lack of" \

            "C99 math features in libm.so in Solaris 8/x86 and Solaris 9/x86" \

            "Studio 11 can be downloaded from www.sun.com."

      fi

    fi

  fi

  if test -f /usr/include/sys/soundcard.h ; then

    audio_drv_list="oss"

  fi

  audio_possible_drivers="oss sdl"

# needed for CMSG_ macros in sys/socket.h

  QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"

# needed for TIOCWIN* defines in termios.h

  QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"

  QEMU_CFLAGS="-std=gnu99 $QEMU_CFLAGS"

  solarisnetlibs="-lsocket -lnsl -lresolv"

  LIBS="$solarisnetlibs $LIBS"

  libs_qga="$solarisnetlibs $libs_qga"

;;

AIX)

  aix="yes"

  make="${MAKE-gmake}"

;;

Haiku)

  haiku="yes"

  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS $QEMU_CFLAGS"

  LIBS="-lposix_error_mapper -lnetwork $LIBS"

;;

*)

  audio_drv_list="oss"

  audio_possible_drivers="oss alsa sdl esd pa"

  linux="yes"

  linux_user="yes"

  usb="linux"

  kvm="yes"

  vhost_net="yes"

  if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then

    audio_possible_drivers="$audio_possible_drivers fmod"

  fi

  QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers $QEMU_INCLUDES"

;;

esac

if [ "$bsd" = "yes" ] ; then

  if [ "$darwin" != "yes" ] ; then

    usb="bsd"

    bsd_user="yes"

  fi

fi

: ${make=${MAKE-make}}

: ${install=${INSTALL-install}}

: ${python=${PYTHON-python}}

: ${smbd=${SMBD-/usr/sbin/smbd}}

# Default objcc to clang if available, otherwise use CC

if has clang; then

  objcc=clang

else

  objcc="$cc"

fi

if test "$mingw32" = "yes" ; then

  EXESUF=".exe"

  QEMU_CFLAGS="-DWIN32_LEAN_AND_MEAN -DWINVER=0x501 $QEMU_CFLAGS"

  # enable C99/POSIX format strings (needs mingw32-runtime 3.15 or later)

  QEMU_CFLAGS="-D__USE_MINGW_ANSI_STDIO=1 $QEMU_CFLAGS"

  if test "$cpu" = "i386"; then

    # We need something better than i386 for __sync_val_compare_and_swap

    # and can expect that QEMU will only run on i686 or later.

    QEMU_CFLAGS="-march=i686 $QEMU_CFLAGS"

  fi

  LIBS="-lwinmm -lws2_32 -liphlpapi $LIBS"

cat > $TMPC << EOF

int main(void) { return 0; }

EOF

  if compile_prog "" "-liberty" ; then

    LIBS="-liberty $LIBS"

  fi

  prefix="c:/Program Files/QEMU"

  mandir="\${prefix}"

  datadir="\${prefix}"

  qemu_docdir="\${prefix}"

  bindir="\${prefix}"

  sysconfdir="\${prefix}"

  local_statedir="\${prefix}"

  confsuffix=""

  libs_qga="-lws2_32 -lwinmm -lpowrprof $libs_qga"

fi

werror=""

for opt do

  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`

  case "$opt" in

  --help|-h) show_help=yes

  ;;

  --version|-V) exec cat $source_path/VERSION

  ;;

  --prefix=*) prefix="$optarg"

  ;;

  --interp-prefix=*) interp_prefix="$optarg"

  ;;

  --source-path=*)

  ;;

  --cross-prefix=*)

  ;;

  --cc=*)

  ;;

  --host-cc=*) host_cc="$optarg"

  ;;

  --objcc=*) objcc="$optarg"

  ;;

  --make=*) make="$optarg"

  ;;

  --install=*) install="$optarg"

  ;;

  --python=*) python="$optarg"

  ;;

  --gcov=*) gcov_tool="$optarg"

  ;;

  --smbd=*) smbd="$optarg"

  ;;

  --extra-cflags=*)

  ;;

  --extra-ldflags=*)

  ;;

  --enable-debug-info)

  ;;

  --disable-debug-info)

  ;;

  --cpu=*)

  ;;

  --target-list=*) target_list="$optarg"

  ;;

  --enable-trace-backend=*) trace_backend="$optarg"

  ;;

  --with-trace-file=*) trace_file="$optarg"

  ;;

  --enable-gprof) gprof="yes"

  ;;

  --enable-gcov) gcov="yes"

  ;;

  --static)

    static="yes"

    LDFLAGS="-static $LDFLAGS"

    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"

  ;;

  --mandir=*) mandir="$optarg"

  ;;

  --bindir=*) bindir="$optarg"

  ;;

  --libdir=*) libdir="$optarg"

  ;;

  --libexecdir=*) libexecdir="$optarg"

  ;;

  --includedir=*) includedir="$optarg"

  ;;

  --datadir=*) datadir="$optarg"

  ;;

  --with-confsuffix=*) confsuffix="$optarg"

  ;;

  --docdir=*) qemu_docdir="$optarg"

  ;;

  --sysconfdir=*) sysconfdir="$optarg"

  ;;

  --localstatedir=*) local_statedir="$optarg"

  ;;

  --sbindir=*|--sharedstatedir=*|\

  --oldincludedir=*|--datarootdir=*|--infodir=*|--localedir=*|\

  --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)

    # These switches are silently ignored, for compatibility with

    # autoconf-generated configure scripts. This allows QEMU's

    # configure to be used by RPM and similar macros that set

    # lots of directory switches by default.

  ;;

  --with-system-pixman) pixman="system"

  ;;

  --without-system-pixman) pixman="internal"

  ;;

  --without-pixman) pixman="none"

  ;;

  --disable-sdl) sdl="no"

  ;;

  --enable-sdl) sdl="yes"

  ;;

  --disable-virtfs) virtfs="no"

  ;;

  --enable-virtfs) virtfs="yes"

  ;;

  --disable-vnc) vnc="no"

  ;;

  --enable-vnc) vnc="yes"

  ;;

  --fmod-lib=*) fmod_lib="$optarg"

  ;;

  --fmod-inc=*) fmod_inc="$optarg"

  ;;

  --oss-lib=*) oss_lib="$optarg"

  ;;

  --audio-card-list=*) audio_card_list=`echo "$optarg" | sed -e 's/,/ /g'`

  ;;

  --audio-drv-list=*) audio_drv_list="$optarg"

  ;;

  --block-drv-whitelist=*) block_drv_whitelist=`echo "$optarg" | sed -e 's/,/ /g'`

  ;;

  --enable-debug-tcg) debug_tcg="yes"

  ;;

  --disable-debug-tcg) debug_tcg="no"

  ;;

  --enable-debug)

      # Enable debugging options that aren't excessively noisy

      debug_tcg="yes"

      debug="yes"

      strip_opt="no"

  ;;

  --enable-sparse) sparse="yes"

  ;;

  --disable-sparse) sparse="no"

  ;;

  --disable-strip) strip_opt="no"

  ;;

  --disable-vnc-tls) vnc_tls="no"

  ;;

  --enable-vnc-tls) vnc_tls="yes"

  ;;

  --disable-vnc-sasl) vnc_sasl="no"

  ;;

  --enable-vnc-sasl) vnc_sasl="yes"

  ;;

  --disable-vnc-jpeg) vnc_jpeg="no"

  ;;

  --enable-vnc-jpeg) vnc_jpeg="yes"

  ;;

  --disable-vnc-png) vnc_png="no"

  ;;

  --enable-vnc-png) vnc_png="yes"

  ;;

  --disable-vnc-ws) vnc_ws="no"

  ;;

  --enable-vnc-ws) vnc_ws="yes"

  ;;

  --disable-slirp) slirp="no"

  ;;

  --disable-uuid) uuid="no"

  ;;

  --enable-uuid) uuid="yes"

  ;;

  --disable-vde) vde="no"

  ;;

  --enable-vde) vde="yes"

  ;;

  --disable-xen) xen="no"

  ;;

  --enable-xen) xen="yes"

  ;;

  --disable-xen-pci-passthrough) xen_pci_passthrough="no"

  ;;

  --enable-xen-pci-passthrough) xen_pci_passthrough="yes"

  ;;

  --disable-brlapi) brlapi="no"

  ;;

  --enable-brlapi) brlapi="yes"

  ;;

  --disable-bluez) bluez="no"

  ;;

  --enable-bluez) bluez="yes"

  ;;

  --disable-kvm) kvm="no"

  ;;

  --enable-kvm) kvm="yes"

  ;;

  --disable-tcg-interpreter) tcg_interpreter="no"

  ;;

  --enable-tcg-interpreter) tcg_interpreter="yes"

  ;;

  --disable-cap-ng)  cap_ng="no"

  ;;

  --enable-cap-ng) cap_ng="yes"

  ;;

  --disable-spice) spice="no"

  ;;

  --enable-spice) spice="yes"

  ;;

  --disable-libiscsi) libiscsi="no"

  ;;

  --enable-libiscsi) libiscsi="yes"

  ;;

  --enable-profiler) profiler="yes"

  ;;

  --disable-cocoa) cocoa="no"

  ;;

  --enable-cocoa)

      cocoa="yes" ;

      sdl="no" ;

      audio_drv_list="coreaudio `echo $audio_drv_list | sed s,coreaudio,,g`"

  ;;

  --disable-system) softmmu="no"

  ;;

  --enable-system) softmmu="yes"

  ;;

  --disable-user)

      linux_user="no" ;

      bsd_user="no" ;

  ;;

  --enable-user) ;;

  --disable-linux-user) linux_user="no"

  ;;

  --enable-linux-user) linux_user="yes"

  ;;

  --disable-bsd-user) bsd_user="no"

  ;;

  --enable-bsd-user) bsd_user="yes"

  ;;

  --enable-guest-base) guest_base="yes"

  ;;

  --disable-guest-base) guest_base="no"

  ;;

  --enable-pie) pie="yes"

  ;;

  --disable-pie) pie="no"

  ;;

  --enable-uname-release=*) uname_release="$optarg"

  ;;

  --enable-werror) werror="yes"

  ;;

  --disable-werror) werror="no"

  ;;

  --disable-curses) curses="no"

  ;;

  --enable-curses) curses="yes"

  ;;

  --disable-curl) curl="no"

  ;;

  --enable-curl) curl="yes"

  ;;

  --disable-fdt) fdt="no"

  ;;

  --enable-fdt) fdt="yes"

  ;;

  --disable-nptl) nptl="no"

  ;;

  --enable-nptl) nptl="yes"

  ;;

  --enable-mixemu) mixemu="yes"

  ;;

  --disable-linux-aio) linux_aio="no"

  ;;

  --enable-linux-aio) linux_aio="yes"

  ;;

  --disable-attr) attr="no"

  ;;

  --enable-attr) attr="yes"

  ;;

  --disable-blobs) blobs="no"

  ;;

  --with-pkgversion=*) pkgversion=" ($optarg)"

  ;;

  --with-coroutine=*) coroutine="$optarg"

  ;;

  --disable-docs) docs="no"

  ;;

  --enable-docs) docs="yes"

  ;;

  --disable-vhost-net) vhost_net="no"

  ;;

  --enable-vhost-net) vhost_net="yes"

  ;;

  --disable-glx) glx="no"

  ;;

  --enable-glx) glx="yes"

  ;;

  --disable-rbd) rbd="no"

  ;;

  --enable-rbd) rbd="yes"

  ;;

  --disable-xfsctl) xfs="no"

  ;;

  --enable-xfsctl) xfs="yes"

  ;;

  --disable-smartcard-nss) smartcard_nss="no"

  ;;

  --enable-smartcard-nss) smartcard_nss="yes"

  ;;

  --disable-libusb) libusb="no"

  ;;

  --enable-libusb) libusb="yes"

  ;;

  --disable-usb-redir) usb_redir="no"

  ;;

  --enable-usb-redir) usb_redir="yes"

  ;;

  --disable-zlib-test) zlib="no"

  ;;

  --enable-guest-agent) guest_agent="yes"

  ;;

  --disable-guest-agent) guest_agent="no"

  ;;

  --enable-tools) want_tools="yes"

  ;;

  --disable-tools) want_tools="no"

  ;;

  --enable-seccomp) seccomp="yes"

  ;;

  --disable-seccomp) seccomp="no"

  ;;

  --disable-glusterfs) glusterfs="no"

  ;;

  --enable-glusterfs) glusterfs="yes"

  ;;

  --disable-virtio-blk-data-plane) virtio_blk_data_plane="no"

  ;;

  --enable-virtio-blk-data-plane) virtio_blk_data_plane="yes"

  ;;

  --disable-gtk) gtk="no"

  ;;

  --enable-gtk) gtk="yes"

  ;;

  --with-gtkabi=*) gtkabi="$optarg"

  ;;

  --enable-tpm) tpm="yes"

  ;;

  --disable-libssh2) libssh2="no"

  ;;

  --enable-libssh2) libssh2="yes"

  ;;

  *) echo "ERROR: unknown option $opt"; show_help="yes"

  ;;

  esac

done

case "$cpu" in

    sparc)

           LDFLAGS="-m32 $LDFLAGS"

           CPU_CFLAGS="-m32 -mcpu=ultrasparc"

           ;;

    sparc64)

           LDFLAGS="-m64 $LDFLAGS"

           CPU_CFLAGS="-m64 -mcpu=ultrasparc"

           ;;

    s390)

           CPU_CFLAGS="-m31 -march=z990"

           LDFLAGS="-m31 $LDFLAGS"

           ;;

    s390x)

           CPU_CFLAGS="-m64 -march=z990"

           LDFLAGS="-m64 $LDFLAGS"

           ;;

    i386)

           CPU_CFLAGS="-m32"

           LDFLAGS="-m32 $LDFLAGS"

           cc_i386='$(CC) -m32'

           ;;

    x86_64)

           CPU_CFLAGS="-m64"

           LDFLAGS="-m64 $LDFLAGS"

           cc_i386='$(CC) -m32'

           ;;

    # No special flags required for other host CPUs

esac

QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS"

EXTRA_CFLAGS="$CPU_CFLAGS $EXTRA_CFLAGS"

default_target_list=""

# these targets are portable

if [ "$softmmu" = "yes" ] ; then

    default_target_list="\

i386-softmmu \

x86_64-softmmu \

alpha-softmmu \

arm-softmmu \

cris-softmmu \

lm32-softmmu \

m68k-softmmu \

microblaze-softmmu \

microblazeel-softmmu \

mips-softmmu \

mipsel-softmmu \

mips64-softmmu \

mips64el-softmmu \

moxie-softmmu \

or32-softmmu \

ppc-softmmu \

ppcemb-softmmu \

ppc64-softmmu \

sh4-softmmu \

sh4eb-softmmu \

sparc-softmmu \

sparc64-softmmu \

s390x-softmmu \

xtensa-softmmu \

xtensaeb-softmmu \

unicore32-softmmu \

"

fi

# the following are Linux specific

if [ "$linux_user" = "yes" ] ; then

    default_target_list="${default_target_list}\

i386-linux-user \

x86_64-linux-user \

alpha-linux-user \

arm-linux-user \

armeb-linux-user \

cris-linux-user \

m68k-linux-user \

microblaze-linux-user \

microblazeel-linux-user \

mips-linux-user \

mipsel-linux-user \

mips64-linux-user \

mips64el-linux-user \

mipsn32-linux-user \

mipsn32el-linux-user \

or32-linux-user \

ppc-linux-user \

ppc64-linux-user \

ppc64abi32-linux-user \

sh4-linux-user \

sh4eb-linux-user \

sparc-linux-user \

sparc64-linux-user \

sparc32plus-linux-user \

unicore32-linux-user \

s390x-linux-user \

"

fi

# the following are BSD specific

if [ "$bsd_user" = "yes" ] ; then

    default_target_list="${default_target_list}\

i386-bsd-user \

x86_64-bsd-user \

sparc-bsd-user \

sparc64-bsd-user \

"

fi

if test x"$show_help" = x"yes" ; then

cat << EOF

Usage: configure [options]

Options: [defaults in brackets after descriptions]

EOF

echo "Standard options:"

echo "  --help                   print this message"

echo "  --prefix=PREFIX          install in PREFIX [$prefix]"

echo "  --interp-prefix=PREFIX   where to find shared libraries, etc."

echo "                           use %M for cpu name [$interp_prefix]"

echo "  --target-list=LIST       set target list (default: build everything)"

echo "Available targets: $default_target_list" | \

    fold -s -w 53 | sed -e 's/^/                           /'

echo ""

echo "Advanced options (experts only):"

echo "  --source-path=PATH       path of source code [$source_path]"

echo "  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]"

echo "  --cc=CC                  use C compiler CC [$cc]"

echo "  --host-cc=CC             use C compiler CC [$host_cc] for code run at"

echo "                           build time"

echo "  --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]"

echo "  --extra-cflags=CFLAGS    append extra C compiler flags QEMU_CFLAGS"

echo "  --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS"

echo "  --make=MAKE              use specified make [$make]"

echo "  --install=INSTALL        use specified install [$install]"

echo "  --python=PYTHON          use specified python [$python]"

echo "  --smbd=SMBD              use specified smbd [$smbd]"

echo "  --static                 enable static build [$static]"

echo "  --mandir=PATH            install man pages in PATH"

echo "  --datadir=PATH           install firmware in PATH$confsuffix"

echo "  --docdir=PATH            install documentation in PATH$confsuffix"

echo "  --bindir=PATH            install binaries in PATH"

echo "  --libdir=PATH            install libraries in PATH"

echo "  --sysconfdir=PATH        install config in PATH$confsuffix"

echo "  --localstatedir=PATH     install local state in PATH"

echo "  --with-confsuffix=SUFFIX suffix for QEMU data inside datadir and sysconfdir [$confsuffix]"

echo "  --enable-debug-tcg       enable TCG debugging"

echo "  --disable-debug-tcg      disable TCG debugging (default)"

echo "  --enable-debug-info       enable debugging information (default)"

echo "  --disable-debug-info      disable debugging information"

echo "  --enable-debug           enable common debug build options"

echo "  --enable-sparse          enable sparse checker"

echo "  --disable-sparse         disable sparse checker (default)"

echo "  --disable-strip          disable stripping binaries"

echo "  --disable-werror         disable compilation abort on warning"

echo "  --disable-sdl            disable SDL"

echo "  --enable-sdl             enable SDL"

echo "  --disable-gtk            disable gtk UI"

echo "  --enable-gtk             enable gtk UI"

echo "  --disable-virtfs         disable VirtFS"

echo "  --enable-virtfs          enable VirtFS"

echo "  --disable-vnc            disable VNC"

echo "  --enable-vnc             enable VNC"

echo "  --disable-cocoa          disable Cocoa (Mac OS X only)"

echo "  --enable-cocoa           enable Cocoa (default on Mac OS X)"

echo "  --audio-drv-list=LIST    set audio drivers list:"

echo "                           Available drivers: $audio_possible_drivers"

echo "  --audio-card-list=LIST   set list of emulated audio cards [$audio_card_list]"

echo "                           Available cards: $audio_possible_cards"

echo "  --block-drv-whitelist=L  set block driver whitelist"

echo "                           (affects only QEMU, not qemu-img)"

echo "  --enable-mixemu          enable mixer emulation"

echo "  --disable-xen            disable xen backend driver support"

echo "  --enable-xen             enable xen backend driver support"

echo "  --disable-xen-pci-passthrough"

echo "  --enable-xen-pci-passthrough"

echo "  --disable-brlapi         disable BrlAPI"

echo "  --enable-brlapi          enable BrlAPI"

echo "  --disable-vnc-tls        disable TLS encryption for VNC server"

echo "  --enable-vnc-tls         enable TLS encryption for VNC server"

echo "  --disable-vnc-sasl       disable SASL encryption for VNC server"

echo "  --enable-vnc-sasl        enable SASL encryption for VNC server"

echo "  --disable-vnc-jpeg       disable JPEG lossy compression for VNC server"

echo "  --enable-vnc-jpeg        enable JPEG lossy compression for VNC server"

echo "  --disable-vnc-png        disable PNG compression for VNC server (default)"

echo "  --enable-vnc-png         enable PNG compression for VNC server"

echo "  --disable-vnc-ws         disable Websockets support for VNC server"

echo "  --enable-vnc-ws          enable Websockets support for VNC server"

echo "  --disable-curses         disable curses output"

echo "  --enable-curses          enable curses output"

echo "  --disable-curl           disable curl connectivity"

echo "  --enable-curl            enable curl connectivity"

echo "  --disable-fdt            disable fdt device tree"

echo "  --enable-fdt             enable fdt device tree"

echo "  --disable-bluez          disable bluez stack connectivity"

echo "  --enable-bluez           enable bluez stack connectivity"

echo "  --disable-slirp          disable SLIRP userspace network connectivity"

echo "  --disable-kvm            disable KVM acceleration support"

echo "  --enable-kvm             enable KVM acceleration support"

echo "  --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)"

echo "  --disable-nptl           disable usermode NPTL support"

echo "  --enable-nptl            enable usermode NPTL support"

echo "  --enable-system          enable all system emulation targets"

echo "  --disable-system         disable all system emulation targets"

echo "  --enable-user            enable supported user emulation targets"

echo "  --disable-user           disable all user emulation targets"

echo "  --enable-linux-user      enable all linux usermode emulation targets"

echo "  --disable-linux-user     disable all linux usermode emulation targets"

echo "  --enable-bsd-user        enable all BSD usermode emulation targets"

echo "  --disable-bsd-user       disable all BSD usermode emulation targets"

echo "  --enable-guest-base      enable GUEST_BASE support for usermode"

echo "                           emulation targets"

echo "  --disable-guest-base     disable GUEST_BASE support"

echo "  --enable-pie             build Position Independent Executables"

echo "  --disable-pie            do not build Position Independent Executables"

echo "  --fmod-lib               path to FMOD library"

echo "  --fmod-inc               path to FMOD includes"

echo "  --oss-lib                path to OSS library"

echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"

echo "  --cpu=CPU                Build for host CPU [$cpu]"

echo "  --disable-uuid           disable uuid support"

echo "  --enable-uuid            enable uuid support"

echo "  --disable-vde            disable support for vde network"

echo "  --enable-vde             enable support for vde network"

echo "  --disable-linux-aio      disable Linux AIO support"

echo "  --enable-linux-aio       enable Linux AIO support"

echo "  --disable-cap-ng         disable libcap-ng support"

echo "  --enable-cap-ng          enable libcap-ng support"

echo "  --disable-attr           disables attr and xattr support"

echo "  --enable-attr            enable attr and xattr support"

echo "  --disable-blobs          disable installing provided firmware blobs"

echo "  --enable-docs            enable documentation build"

echo "  --disable-docs           disable documentation build"

echo "  --disable-vhost-net      disable vhost-net acceleration support"

echo "  --enable-vhost-net       enable vhost-net acceleration support"

echo "  --enable-trace-backend=B Set trace backend"

echo "                           Available backends:" $($python "$source_path"/scripts/tracetool.py --list-backends)

echo "  --with-trace-file=NAME   Full PATH,NAME of file to store traces"

echo "                           Default:trace-<pid>"

echo "  --disable-spice          disable spice"

echo "  --enable-spice           enable spice"

echo "  --enable-rbd             enable building the rados block device (rbd)"

echo "  --disable-libiscsi       disable iscsi support"

echo "  --enable-libiscsi        enable iscsi support"

echo "  --disable-smartcard-nss  disable smartcard nss support"

echo "  --enable-smartcard-nss   enable smartcard nss support"

echo "  --disable-libusb         disable libusb (for usb passthrough)"

echo "  --enable-libusb          enable libusb (for usb passthrough)"

echo "  --disable-usb-redir      disable usb network redirection support"

echo "  --enable-usb-redir       enable usb network redirection support"

echo "  --disable-guest-agent    disable building of the QEMU Guest Agent"

echo "  --enable-guest-agent     enable building of the QEMU Guest Agent"

echo "  --disable-seccomp        disable seccomp support"

echo "  --enable-seccomp         enables seccomp support"

echo "  --with-coroutine=BACKEND coroutine backend. Supported options:"

echo "                           gthread, ucontext, sigaltstack, windows"

echo "  --enable-glusterfs       enable GlusterFS backend"

echo "  --disable-glusterfs      disable GlusterFS backend"

echo "  --enable-gcov            enable test coverage analysis with gcov"

echo "  --gcov=GCOV              use specified gcov [$gcov_tool]"

echo "  --enable-tpm             enable TPM support"

echo "  --disable-libssh2        disable ssh block device support"

echo "  --enable-libssh2         enable ssh block device support"

echo ""

echo "NOTE: The object files are built at the place where configure is launched"

exit 1

fi

# Now we have handled --enable-tcg-interpreter and know we're not just

# printing the help message, bail out if the host CPU isn't supported.

if test "$ARCH" = "unknown"; then

    if test "$tcg_interpreter" = "yes" ; then

        echo "Unsupported CPU = $cpu, will use TCG with TCI (experimental)"

        ARCH=tci

    else

        error_exit "Unsupported CPU = $cpu, try --enable-tcg-interpreter"

    fi

fi

# check that the C compiler works.

cat > $TMPC <<EOF

int main(void) { return 0; }

EOF

if compile_object ; then

  : C compiler works ok

else

    error_exit "\"$cc\" either does not exist or does not work"

fi

# Consult white-list to determine whether to enable werror

# by default.  Only enable by default for git builds

z_version=`cut -f3 -d. $source_path/VERSION`

if test -z "$werror" ; then

    if test -d "$source_path/.git" -a \

        "$linux" = "yes" ; then

        werror="yes"

    else

        werror="no"

    fi

fi

gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits"

gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers $gcc_flags"

gcc_flags="-Wmissing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"

gcc_flags="-fstack-protector-all -Wendif-labels $gcc_flags"

gcc_flags="-Wno-initializer-overrides $gcc_flags"

# Note that we do not add -Werror to gcc_flags here, because that would

# enable it for all configure tests. If a configure test failed due

# to -Werror this would just silently disable some features,

# so it's too error prone.

cat > $TMPC << EOF

int main(void) { return 0; }

EOF

for flag in $gcc_flags; do

    # Use the positive sense of the flag when testing for -Wno-wombat

    # support (gcc will happily accept the -Wno- form of unknown

    # warning options).

    optflag="$(echo $flag | sed -e 's/^-Wno-/-W/')"

    if compile_prog "-Werror $optflag" "" ; then

	QEMU_CFLAGS="$QEMU_CFLAGS $flag"

    fi

done

# Workaround for http://gcc.gnu.org/PR55489.  Happens with -fPIE/-fPIC and

# large functions that use global variables.  The bug is in all releases of

# GCC, but it became particularly acute in 4.6.x and 4.7.x.  It is fixed in

# 4.7.3 and 4.8.0.  We should be able to delete this at the end of 2013.

cat > $TMPC << EOF

#if __GNUC__ == 4 && (__GNUC_MINOR__ == 6 || (__GNUC_MINOR__ == 7 && __GNUC_PATCHLEVEL__ <= 2))

int main(void) { return 0; }

#else

#error No bug in this compiler.

#endif

EOF

if compile_prog "-Werror -fno-gcse" "" ; then

  TRANSLATE_OPT_CFLAGS=-fno-gcse

fi

if test "$static" = "yes" ; then

  if test "$pie" = "yes" ; then

    error_exit "static and pie are mutually incompatible"

  else

    pie="no"

  fi

fi

if test "$pie" = ""; then

  case "$cpu-$targetos" in

    i386-Linux|x86_64-Linux|i386-OpenBSD|x86_64-OpenBSD)

      ;;

    *)

      pie="no"

      ;;

  esac

fi

if test "$pie" != "no" ; then

  cat > $TMPC << EOF

#ifdef __linux__

#  define THREAD __thread

#else

#  define THREAD

#endif

static THREAD int tls_var;

int main(void) { return tls_var; }

EOF

  if compile_prog "-fPIE -DPIE" "-pie"; then

    QEMU_CFLAGS="-fPIE -DPIE $QEMU_CFLAGS"

    LDFLAGS="-pie $LDFLAGS"

    pie="yes"

    if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then

      LDFLAGS="-Wl,-z,relro -Wl,-z,now $LDFLAGS"

    fi

  else

    if test "$pie" = "yes"; then

      error_exit "PIE not available due to missing toolchain support"

    else

      echo "Disabling PIE due to missing toolchain support"

      pie="no"

    fi

  fi

fi

#

# Solaris specific configure tool chain decisions

#

if test "$solaris" = "yes" ; then

  if has $install; then

    :

  else

    error_exit "Solaris install program not found. Use --install=/usr/ucb/install or" \

        "install fileutils from www.blastwave.org using pkg-get -i fileutils" \

        "to get ginstall which is used by default (which lives in /opt/csw/bin)"

  fi

  if test "`path_of $install`" = "/usr/sbin/install" ; then

    error_exit "Solaris /usr/sbin/install is not an appropriate install program." \

        "try ginstall from the GNU fileutils available from www.blastwave.org" \

        "using pkg-get -i fileutils, or use --install=/usr/ucb/install"

  fi

  if has ar; then

    :

  else

    if test -f /usr/ccs/bin/ar ; then

      error_exit "No path includes ar" \

          "Add /usr/ccs/bin to your path and rerun configure"

    fi

    error_exit "No path includes ar"

  fi

fi

if ! has $python; then

  error_exit "Python not found. Use --python=/path/to/python"

fi

# Note that if the Python conditional here evaluates True we will exit

# with status 1 which is a shell 'false' value.

if ! "$python" -c 'import sys; sys.exit(sys.version_info < (2,4) or sys.version_info >= (3,))'; then

  error_exit "Cannot use '$python', Python 2.4 or later is required." \

      "Note that Python 3 or later is not yet supported." \

      "Use --python=/path/to/python to specify a supported Python."

fi

if test -z "${target_list+xxx}" ; then

    target_list="$default_target_list"

else

    target_list=`echo "$target_list" | sed -e 's/,/ /g'`

fi

# see if system emulation was really requested

case " $target_list " in

  *"-softmmu "*) softmmu=yes

  ;;

  *) softmmu=no

  ;;

esac

feature_not_found() {

  feature=$1

  error_exit "User requested feature $feature" \

      "configure was not able to find it"

}

if test -z "$cross_prefix" ; then

# ---

# big/little endian test

cat > $TMPC << EOF

#include <inttypes.h>

int main(void) {

        volatile uint32_t i=0x01234567;

        return (*((uint8_t*)(&i))) == 0x67;

}

EOF

if compile_prog "" "" ; then

$TMPE && bigendian="yes"

else

echo big/little test failed

fi

else

# if cross compiling, cannot launch a program, so make a static guess

case "$cpu" in

  arm)

    # ARM can be either way; ask the compiler which one we are

    if check_define __ARMEB__; then

      bigendian=yes

    fi

  ;;

  hppa|m68k|mips|mips64|ppc|ppc64|s390|s390x|sparc|sparc64)

    bigendian=yes

  ;;

esac

fi

##########################################

# pkg-config probe

if ! has "$pkg_config_exe"; then

  error_exit "pkg-config binary '$pkg_config_exe' not found"

fi

##########################################

# NPTL probe

if test "$nptl" != "no" ; then

  cat > $TMPC <<EOF

#include <sched.h>

#include <linux/futex.h>

int main(void) {

#if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)

#error bork

#endif

  return 0;

}

EOF

  if compile_object ; then

    nptl=yes

  else

    if test "$nptl" = "yes" ; then

      feature_not_found "nptl"

    fi

    nptl=no

  fi

fi

##########################################

# zlib check

if test "$zlib" != "no" ; then

    cat > $TMPC << EOF

#include <zlib.h>

int main(void) { zlibVersion(); return 0; }

EOF

    if compile_prog "" "-lz" ; then

        :

    else

        error_exit "zlib check failed" \

            "Make sure to have the zlib libs and headers installed."

    fi

fi

##########################################

# libseccomp check

if test "$seccomp" != "no" ; then

    if $pkg_config --atleast-version=1.0.0 libseccomp --modversion >/dev/null 2>&1; then

        libs_softmmu="$libs_softmmu `$pkg_config --libs libseccomp`"

	seccomp="yes"

    else

	if test "$seccomp" = "yes"; then

            feature_not_found "libseccomp"

	fi

	seccomp="no"

    fi

fi

##########################################

# xen probe

if test "$xen" != "no" ; then

  xen_libs="-lxenstore -lxenctrl -lxenguest"

  # First we test whether Xen headers and libraries are available.

  # If no, we are done and there is no Xen support.

  # If yes, more tests are run to detect the Xen version.

  # Xen (any)

  cat > $TMPC <<EOF

#include <xenctrl.h>

int main(void) {

  return 0;

}

EOF

  if ! compile_prog "" "$xen_libs" ; then

    # Xen not found

    if test "$xen" = "yes" ; then

      feature_not_found "xen"

    fi

    xen=no

  # Xen unstable

  elif

      cat > $TMPC <<EOF &&

#include <xenctrl.h>

#include <xenstore.h>

#include <stdint.h>

#include <xen/hvm/hvm_info_table.h>

#if !defined(HVM_MAX_VCPUS)

# error HVM_MAX_VCPUS not defined

#endif

int main(void) {

  xc_interface *xc;

  xs_daemon_open();

  xc = xc_interface_open(0, 0, 0);

  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);

  xc_gnttab_open(NULL, 0);

  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);

  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);

  return 0;

}

EOF

      compile_prog "" "$xen_libs"

    then

    xen_ctrl_version=420

    xen=yes

  elif

      cat > $TMPC <<EOF &&

#include <xenctrl.h>

#include <xs.h>

#include <stdint.h>

#include <xen/hvm/hvm_info_table.h>

#if !defined(HVM_MAX_VCPUS)

# error HVM_MAX_VCPUS not defined

#endif

int main(void) {

  xs_daemon_open();

  xc_interface_open(0, 0, 0);

  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);

  xc_gnttab_open(NULL, 0);

  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);

  return 0;

}

EOF

      compile_prog "" "$xen_libs"

    then

    xen_ctrl_version=410

    xen=yes

  # Xen 4.0.0

  elif

      cat > $TMPC <<EOF &&

#include <xenctrl.h>

#include <xs.h>

#include <stdint.h>

#include <xen/hvm/hvm_info_table.h>

#if !defined(HVM_MAX_VCPUS)

# error HVM_MAX_VCPUS not defined

#endif

int main(void) {

  struct xen_add_to_physmap xatp = {

    .domid = 0, .space = XENMAPSPACE_gmfn, .idx = 0, .gpfn = 0,

  };

  xs_daemon_open();

  xc_interface_open();

  xc_gnttab_open();

  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);

  xc_memory_op(0, XENMEM_add_to_physmap, &xatp);

  return 0;

}

EOF

      compile_prog "" "$xen_libs"

    then

    xen_ctrl_version=400

    xen=yes

  # Xen 3.4.0

  elif