AC_PREREQ([2.57])

AC_INIT([spice-gtk], [m4_esyscmd(build-aux/git-version-gen .tarball-version)],
        [spice-devel@lists.freedesktop.org])

AC_CONFIG_MACRO_DIR([m4])
AM_CONFIG_HEADER([config.h])
AC_CONFIG_AUX_DIR([build-aux])

AM_INIT_AUTOMAKE([foreign dist-bzip2 -Wall -Werror])
LT_INIT
AM_MAINTAINER_MODE

IT_PROG_INTLTOOL([0.40.0])
GETTEXT_PACKAGE=spice-gtk
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE],"$GETTEXT_PACKAGE", [GETTEXT package name])
AM_GLIB_GNU_GETTEXT


SPICE_GTK_LOCALEDIR=[${datadir}/locale]
AC_SUBST(SPICE_GTK_LOCALEDIR)

GTK_DOC_CHECK([1.14],[--flavour no-tmpl])

# Define default SPICE_COMMON_SRCDIR
SPICE_COMMON_SRCDIR='$(top_srcdir)'/common

AC_PROG_CC
AC_PROG_CC_C99
if test "x$ac_cv_prog_cc_c99" = xno; then
    AC_MSG_ERROR([C99 compiler is required.])
fi

AC_PROG_INSTALL
AC_CANONICAL_HOST
AC_PROG_LIBTOOL
AM_PROG_CC_C_O
AC_C_BIGENDIAN
AC_PATH_PROGS(PYTHON, python2 python)
RRA_LD_VERSION_SCRIPT

AC_MSG_CHECKING([for native Win32])
case "$host_os" in
     *mingw*|*cygwin*)
        os_win32=yes
        gio_os=gio-windows-2.0
        red_target=Windows
        ;;
     *)
        os_win32=no
        gio_os=gio-unix-2.0
        red_target=Unix
        ;;
esac
AC_MSG_RESULT([$os_win32])
AM_CONDITIONAL([OS_WIN32],[test "$os_win32" = "yes"])

AC_CHECK_HEADERS([sys/ipc.h sys/shm.h])
AC_CHECK_HEADERS([sys/socket.h netinet/in.h arpa/inet.h])

dnl =========================================================================
dnl Chek optional features
PKG_CHECK_MODULES(PROTOCOL, spice-protocol >= 0.10.2)
AC_SUBST(PROTOCOL_CFLAGS)

AC_CHECK_LIBM
AC_SUBST(LIBM)

srcdir="$(dirname $0)"
if test ! -e "$srcdir/gtk/generated_marshallers.c"; then
  AC_MSG_CHECKING([for pyparsing python module])
  echo "import pyparsing" | ${PYTHON} - >/dev/null 2>&1
  if test $? -ne 0 ; then
    AC_MSG_RESULT([not found])
    AC_MSG_ERROR([pyparsing python module is required to compile this package])
  fi
  AC_MSG_RESULT([found])
fi

if test ! -e "$srcdir/gtk/vncdisplaykeymap_osx2xtkbd.c"; then
  AC_MSG_CHECKING([for Text::CSV Perl module])
  perl -MText::CSV -e "" >/dev/null 2>&1
  if test $? -ne 0 ; then
    AC_MSG_RESULT([not found])
    AC_MSG_ERROR([Text::CSV Perl module is required to compile this package])
  fi
  AC_MSG_RESULT([found])
fi

SPICE_GLIB_REQUIRES=""
SPICE_GTK_REQUIRES=""

PKG_CHECK_MODULES(PIXMAN, pixman-1 >= 0.17.7)
AC_SUBST(PIXMAN_CFLAGS)
AC_SUBST(PIXMAN_LIBS)
SPICE_GLIB_REQUIRES+=" pixman-1 >= 0.17.7"

PKG_CHECK_MODULES(CELT051, celt051 >= 0.5.1.1)
AC_SUBST(CELT051_CFLAGS)
AC_SUBST(CELT051_LIBS)
AC_SUBST(CELT051_LIBDIR)
SPICE_GLIB_REQUIRES+=" celt051 >= 0.5.1.1"

PKG_CHECK_MODULES(SSL, openssl)
AC_SUBST(SSL_CFLAGS)
AC_SUBST(SSL_LIBS)
SPICE_GLIB_REQUIRES+=" openssl"

dnl Cyrus SASL
AC_ARG_WITH([sasl],
  [AS_HELP_STRING([--with-sasl=@<:@yes/no/auto@:>@], [use cyrus SASL for authentication @<:@default=auto@:>@])],
  [],
  [with_sasl="auto"])

SASL_CFLAGS=
SASL_LIBS=
enable_sasl=no
if test "x$with_sasl" != "xno"; then
  if test "x$with_sasl" != "xyes" -a "x$with_sasl" != "xauto"; then
    SASL_CFLAGS="-I$with_sasl"
    SASL_LIBS="-L$with_sasl"
  fi
  fail=0
  old_cflags="$CFLAGS"
  old_libs="$LIBS"
  CFLAGS="$CFLAGS $SASL_CFLAGS"
  LIBS="$LIBS $SASL_LIBS"
  AC_CHECK_HEADER([sasl/sasl.h],[],[
    if test "x$with_sasl" != "xauto" ; then
        with_sasl=no
    else
        fail=1
    fi])
  if test "x$with_sasl" != "xno" ; then
    AC_CHECK_LIB([sasl2], [sasl_client_init],[with_sasl2=yes],[with_sasl2=no])
  fi
  if test "x$with_sasl2" = "xno" -a "x$with_sasl" != "xno" ; then
    AC_CHECK_LIB([sasl], [sasl_client_init],[with_sasl=yes],[with_sasl=no])
  fi
  if test "x$with_sasl2" = "xyes"; then
    SASL_LIBS="$SASL_LIBS -lsasl2"
  elif test "x$with_sasl" = "xyes"; then
    SASL_LIBS="$SASL_LIBS -lsasl"
  else
    AC_MSG_ERROR([You must install the Cyrus SASL development package in order to compile spice-gtk])
 fi
  CFLAGS="$old_cflags"
  LIBS="$old_libs"
  if test "x$with_sasl2" = "xyes" -o "x$with_sasl" = "xyes" ; then
    AC_DEFINE_UNQUOTED([HAVE_SASL], 1,
      [whether Cyrus SASL is available for authentication])
    enable_sasl=yes
  fi
fi
AM_CONDITIONAL([HAVE_SASL], [test "x$with_sasl2" = "xyes" -o "x$with_sasl" = "xyes"])
AC_SUBST([SASL_CFLAGS])
AC_SUBST([SASL_LIBS])


AC_MSG_CHECKING([which gtk+ version to compile against])
AC_ARG_WITH([gtk],
  [AS_HELP_STRING([--with-gtk=@<:@2.0/3.0@:>@],[which gtk+ version to compile against @<:@default=3.0@:>@])],
  [case "$with_gtk" in
     2.0|3.0) ;;
     *) AC_MSG_ERROR([invalid gtk version specified]) ;;
   esac],
  [with_gtk=3.0])
AC_MSG_RESULT([$with_gtk])

case "$with_gtk" in
  2.0) GTK_API_VERSION=2.0
       GTK_REQUIRED=2.18.0
       SPICE_GTK_API_VERSION=2.0
       ;;
  3.0) GTK_API_VERSION=3.0
       GTK_REQUIRED=2.91.3
       SPICE_GTK_API_VERSION=3.0
       ;;
esac

AC_SUBST([GTK_API_VERSION])
AC_SUBST([GTK_REQUIRED])
AC_SUBST([SPICE_GTK_API_VERSION])
AM_CONDITIONAL([HAVE_GTK_2],[test "$with_gtk" = "2.0"])
AM_CONDITIONAL([HAVE_GTK_3],[test "$with_gtk" = "3.0"])

PKG_CHECK_MODULES(GTK, gtk+-$GTK_API_VERSION >= $GTK_REQUIRED)
AC_SUBST(GTK_CFLAGS)
AC_SUBST(GTK_LIBS)
SPICE_GTK_REQUIRES+=" gtk+-$GTK_API_VERSION >= $GTK_REQUIRED"

PKG_CHECK_EXISTS([gtk+-x11-$with_gtk], [have_x11=yes], [have_x11=no])
AS_IF([test "x$have_x11" = "xyes"], [AC_DEFINE([HAVE_X11], 1, [Have x11?])])
AM_CONDITIONAL([WITH_DISPLAY_X11], [test "x$have_x11" = "xyes"])

PKG_CHECK_EXISTS([gtk+-quartz-$with_gtk], [have_quartz=yes], [have_quartz=no])
AS_IF([test "x$have_quartz" = "xyes"], [AC_DEFINE([HAVE_QUARTZ], 1, [Have Quartz?])])
AM_CONDITIONAL([WITH_DISPLAY_QUARTZ], [test "x$have_quartz" = "xyes"])

PKG_CHECK_EXISTS([gtk+-win32-$with_gtk], [have_win32=yes], [have_win32=no])
AS_IF([test "x$have_win32" = "xyes"], [AC_DEFINE([HAVE_WINDOWS], 1, [Have Win32?])])
AM_CONDITIONAL([WITH_DISPLAY_WINDOWS], [test "x$have_win32" = "xyes"])

if [test "x$have_x11" = "xyes" ]
then
  PKG_CHECK_MODULES(XRANDR, x11 xrandr, [have_xrandr=yes], [have_xrandr=no])
  AC_SUBST(XRANDR_CFLAGS)
  AC_SUBST(XRANDR_LIBS)
  AS_IF([test "x$have_xrandr" = "xyes"], [AC_DEFINE([HAVE_RANDR], 1, [Have xrandr?])])

  AC_CHECK_HEADERS([X11/XKBlib.h])
fi

AC_ARG_WITH([x11],
  AS_HELP_STRING([--with-x11], [Use x11/shm display backend instead of cairo @<:@default=no@:>@]))

AC_MSG_CHECKING([What rendering backend to use..])
if [test "x$with_x11" = "xyes" ]
then
  if [test "$GTK_API_VERSION" = "3.0" ]
  then
    AC_MSG_ERROR([X11 SHM backend is not compatible with GTK3])
  fi
  AC_MSG_RESULT([x11])
  AC_DEFINE([WITH_X11], 1, [Use X11 backend?])
else
  AC_MSG_RESULT([cairo])
fi
AM_CONDITIONAL([WITH_X11], [test "x$with_x11" = "xyes"])

AC_ARG_WITH([pnp-ids-path],
  AC_HELP_STRING([--with-pnp-ids-path],
                 [Specify the path to pnp.ids @<:@default=(internal)@:>@]),
  [],
  [with_pnp_ids_path="\${pnpdatadir}/pnp.ids"])

AM_CONDITIONAL(USE_INTERNAL_PNP_IDS, test "x$with_pnp_ids_path" = "x\${pnpdatadir}/pnp.ids")
PNP_IDS=$with_pnp_ids_path
AC_SUBST(PNP_IDS)
if test "x$with_pnp_ids_path" = "x\${pnpdatadir}/pnp.ids"; then
        EXTERNAL_PNP_IDS="no (internal)"
else
        EXTERNAL_PNP_IDS="$with_pnp_ids_path"
fi

PKG_CHECK_MODULES(GLIB2, glib-2.0 >= 2.22)
AC_SUBST(GLIB2_CFLAGS)
AC_SUBST(GLIB2_LIBS)

PKG_CHECK_MODULES(GOBJECT2, gobject-2.0)
AC_SUBST(GOBJECT2_CFLAGS)
AC_SUBST(GOBJECT2_LIBS)

PKG_CHECK_MODULES(GIO, gio-2.0 >= 2.10.0 $gio_os)
AC_SUBST(GIO_CFLAGS)
AC_SUBST(GIO_LIBS)

PKG_CHECK_MODULES(CAIRO, cairo >= 1.2.0)
AC_SUBST(CAIRO_CFLAGS)
AC_SUBST(CAIRO_LIBS)

PKG_CHECK_MODULES(GTHREAD, gthread-2.0 > 2.0.0)
AC_SUBST(GTHREAD_CFLAGS)
AC_SUBST(GTHREAD_LIBS)

AC_ARG_WITH([audio],
  AS_HELP_STRING([--with-audio=@<:@gstreamer/pulse/no@:>@], [Select audio backend @<:@default=pulse@:>@]),
  [],
  [with_audio="pulse"])

case "$with_audio" in
  gstreamer|pulse|no*)
    ;;
  *) AC_MSG_ERROR(Unsupported audio backend)
esac

AS_IF([test "x$with_audio" = "xpulse"],
      [PKG_CHECK_MODULES(PULSE, libpulse libpulse-mainloop-glib, [have_pulse=yes], [have_pulse=no])],
      [have_pulse=no])

AS_IF([test "x$have_pulse" = "xyes"],
      [AC_DEFINE([WITH_PULSE], 1, [Have pulseaudio?])],
      [AS_IF([test "x$with_audio" = "xpulse"],
             [AC_MSG_ERROR([PulseAudio requested but not found])
      ])
])
AM_CONDITIONAL([WITH_PULSE], [test "x$have_pulse" = "xyes"])
AC_SUBST(PULSE_CFLAGS)
AC_SUBST(PULSE_LIBS)

AS_IF([test "x$with_audio" = "xgstreamer"],
      [PKG_CHECK_MODULES(GST, gstreamer-0.10 gstreamer-base-0.10 gstreamer-app-0.10 gstreamer-audio-0.10, [have_gst=yes], [have_gst=no])],
      [have_gst=no])

AS_IF([test "x$have_gst" = "xyes"],
      [AC_DEFINE([WITH_GSTAUDIO], 1, [Have GStreamer?])],
      [AS_IF([test "x$with_audio" = "xgstreamer"],
             [AC_MSG_ERROR([GStreamer requested but not found])
      ])
])
AM_CONDITIONAL([WITH_GSTAUDIO], [test "x$have_gst" = "xyes"])
AC_SUBST(GST_CFLAGS)
AC_SUBST(GST_LIBS)

AC_CHECK_LIB(jpeg, jpeg_destroy_decompress,
    AC_MSG_CHECKING([for jpeglib.h])
    AC_TRY_CPP(
[#include <stdio.h>
#undef PACKAGE
#undef VERSION
#undef HAVE_STDLIB_H
#include <jpeglib.h>],
        JPEG_LIBS='-ljpeg'
        AC_MSG_RESULT($jpeg_ok),
	AC_MSG_ERROR([jpeglib.h not found])),
    AC_MSG_ERROR([libjpeg not found]))
AC_SUBST(JPEG_LIBS)

AC_CHECK_LIB(z, deflate, Z_LIBS='-lz', AC_MSG_ERROR([zlib not found]))
AC_SUBST(Z_LIBS)

AC_ARG_ENABLE([smartcard],
  AS_HELP_STRING([--enable-smartcard=@<:@yes/no@:>@],
                 [Enable smartcard support @<:@default=yes@:>@]),
  [],
  [enable_smartcard="yes"])

if test "x$enable_smartcard" = "xno"; then
  AM_CONDITIONAL(WITH_SMARTCARD, false)
else
  PKG_CHECK_MODULES(SMARTCARD, libcacard >= 0.1.2)
  AC_DEFINE(USE_SMARTCARD, [1], [Define if supporting smartcard proxying])
  AM_CONDITIONAL(WITH_SMARTCARD, true)
fi

AC_ARG_ENABLE([usbredir],
  AS_HELP_STRING([--enable-usbredir=@<:@auto/yes/no@:>@],
                 [Enable usbredir support @<:@default=auto@:>@]),
  [],
  [enable_usbredir="auto"])

if test "x$enable_usbredir" = "xno"; then
  AM_CONDITIONAL(WITH_USBREDIR, false)
else
  PKG_CHECK_MODULES([USBREDIR],
                    [gudev-1.0 libusb-1.0 >= 1.0.9 libusbredirhost >= 0.3.3 libusbredirparser >= 0.3.3],
                    [have_usbredir=yes],
                    [have_usbredir=no])
  if test "x$have_usbredir" = "xno" && test "x$enable_usbredir" = "xyes"; then
    AC_MSG_ERROR([usbredir support explicitly requested, but some required packages are not available])
  fi
  if test "x$have_usbredir" = "xyes"; then
    AC_DEFINE(USE_USBREDIR, [1], [Define if supporting usbredir proxying])
  fi
  AM_CONDITIONAL([WITH_USBREDIR], [test "x$have_usbredir" = "xyes"])
fi

AC_ARG_ENABLE([polkit],
  AS_HELP_STRING([--enable-polkit=@<:@auto/yes/no@:>@],
                 [Enable PolicyKit support (for the usb acl helper)@<:@default=auto@:>@]),
  [],
  [enable_polkit="auto"])

if test "x$have_usbredir" = "xyes" && test "x$enable_polkit" != "xno"; then
  PKG_CHECK_MODULES([POLKIT], [polkit-gobject-1 >= 0.96],
                              [have_polkit=yes],
                              [have_polkit=no])
  AC_CHECK_HEADER([acl/libacl.h], [], [have_polkit=no])
  AC_CHECK_LIB([acl], [acl_get_file], [ACL_LIBS=-lacl], [have_polkit=no])
  if test "x$enable_polkit" = "xyes" && test "x$have_polkit" = "xno"; then
    AC_MSG_ERROR([PolicyKit support explicitly requested, but some required packages are not available])
  fi

  if test "x$have_polkit" = "xyes"; then
    AC_SUBST(ACL_LIBS)
    AC_DEFINE(USE_POLKIT, [1], [Define if supporting polkit])
  fi
  AM_CONDITIONAL([WITH_POLKIT], [test "x$have_polkit" = "xyes"])
  POLICYDIR=`${PKG_CONFIG} polkit-gobject-1 --variable=policydir`
  AC_SUBST(POLICYDIR)
  # Check for polkit_authority_get_sync()
  AC_CHECK_LIB([polkit-gobject-1], [polkit_authority_get_sync], ac_have_pk_auth_get_sync="1", ac_have_pk_auth_get_sync="0")
  AC_DEFINE_UNQUOTED(HAVE_POLKIT_AUTHORITY_GET_SYNC, $ac_have_pk_auth_get_sync, [Define if you have a polkit with polkit_authority_get_sync()])
else
  AM_CONDITIONAL(WITH_POLKIT, false)
fi

if test "x$have_usbredir" = "xyes" && test "x$have_polkit" != "xyes"; then
  AC_MSG_WARN([Building with usbredir support, but *not* building the usb acl helper])
fi

AC_ARG_ENABLE([pie],
  AS_HELP_STRING([--enable-pie=@<:@auto/yes/no@:>@],
                 [Enable position-independent-executable support (for the usb acl helper)@<:@default=auto@:>@]),
  [],
  [enable_pie="auto"])

if test "x$have_polkit" = "xyes" && test "x$enable_pie" != "xno"; then
  save_CFLAGS="$CFLAGS"
  save_LDFLAGS="$LDFLAGS"
  CFLAGS="$CFLAGS -fPIE"
  LDFLAGS="$LDFLAGS -pie -Wl,-z,relro -Wl,-z,now"
  AC_MSG_CHECKING([for PIE support])
  AC_LINK_IFELSE([AC_LANG_SOURCE([void main () {}])],
                 [have_pie=yes],
                 [have_pie=no])
  AC_MSG_RESULT([$have_pie])
  if test "x$have_pie" = "xno" && test "x$enable_pie" = "xyes"; then
    AC_MSG_ERROR([pie support explicitly requested, but your toolchain does not support it])
  fi
  if test "x$have_pie" = "xyes"; then
    PIE_CFLAGS="-fPIE"
    PIE_LDFLAGS="-pie -Wl,-z,relro -Wl,-z,now"
    AC_SUBST(PIE_CFLAGS)
    AC_SUBST(PIE_LDFLAGS)
  fi
  CFLAGS="$save_CFLAGS"
  LDFLAGS="$save_LDFLAGS"
fi

AC_ARG_WITH([usb-acl-helper-dir],
  AS_HELP_STRING([--with-usb-acl-helper-dir=DIR],
                 [Directory where the USB ACL helper binary should be installed]),
  [ACL_HELPER_DIR="$with_usb_acl_helper_dir"],
  [ACL_HELPER_DIR="${bindir}/"])
AC_SUBST([ACL_HELPER_DIR])

AC_ARG_WITH([usb-ids-path],
  AC_HELP_STRING([--with-usb-ids-path],
                 [Specify the path to usb.ids @<:@default=auto@:>@]),
  [USB_IDS="$with_usb_ids_path"],
  [USB_IDS="auto"])
AC_MSG_CHECKING([for usb.ids])
if test "x$USB_IDS" = "xauto"; then
  if test -n "$PKG_CONFIG"; then
    USB_IDS=$($PKG_CONFIG --variable=usbids usbutils)
  else
    USB_IDS=
  fi
fi
if test -n "$USB_IDS"; then
  AC_MSG_RESULT([$USB_IDS])
  AC_SUBST(USB_IDS)
  AC_DEFINE(WITH_USBIDS, [1], [Define if compiling with usb.ids support])
else
  AC_MSG_RESULT([not found])
fi

AC_ARG_WITH([coroutine],
  AS_HELP_STRING([--with-coroutine=@<:@ucontext/gthread/winfiber/auto@:>@],
                 [use ucontext or GThread for coroutines @<:@default=auto@:>@]),
  [],
  [with_coroutine=auto])

case $with_coroutine in
  ucontext|gthread|winfiber|auto) ;;
  *) AC_MSG_ERROR(Unsupported coroutine type)
esac

if test "$with_coroutine" = "auto"; then
  if test "$os_win32" = "yes"; then
    with_coroutine=winfiber
  else
    with_coroutine=ucontext
  fi
fi

if test "$with_coroutine" = "ucontext"; then
  AC_CHECK_FUNC(makecontext, [],[with_coroutine=gthread])
  AC_CHECK_FUNC(swapcontext, [],[with_coroutine=gthread])
  AC_CHECK_FUNC(getcontext, [],[with_coroutine=gthread])
fi

WITH_UCONTEXT=0
WITH_GTHREAD=0
WITH_WINFIBER=0

case $with_coroutine in
  ucontext) WITH_UCONTEXT=1 ;;
  gthread) WITH_GTHREAD=1 ;;
  winfiber) WITH_WINFIBER=1 ;;
  *) AC_MSG_ERROR(Unsupported coroutine type)
esac

AC_DEFINE_UNQUOTED(WITH_UCONTEXT,[$WITH_UCONTEXT], [Whether to use ucontext coroutine impl])
AM_CONDITIONAL(WITH_UCONTEXT, [test "x$WITH_UCONTEXT" = "x1"])

AC_DEFINE_UNQUOTED(WITH_WINFIBER,[$WITH_WINFIBER], [Whether to use fiber coroutine impl])
AM_CONDITIONAL(WITH_WINFIBER, [test "x$WITH_WINFIBER" = "x1"])

AC_DEFINE_UNQUOTED(WITH_GTHREAD,[$WITH_GTHREAD], [Whether to use gthread coroutine impl])
AM_CONDITIONAL(WITH_GTHREAD, [test "x$WITH_GTHREAD" = "x1"])

AM_CONDITIONAL([HAVE_INTROSPECTION], [test "0" != "1"])
PKG_CHECK_EXISTS([GOBJECT_INTROSPECTION],
        [gobject-introspection-1.0 >= 0.9.4],
        [has_symbol_prefix=yes], [:])
GOBJECT_INTROSPECTION_CHECK([0.6.7])
AM_CONDITIONAL([G_IR_SCANNER_SYMBOL_PREFIX], [test "x$has_symbol_prefix" = "xyes"])

AC_ARG_ENABLE([vala],
  AS_HELP_STRING([--enable-vala], [Check for vala requirements @<:@default=no@:>@]),
  [],
  enable_vala="no")

VALA_REQUIRED=0.14
if test x$enable_vala = xyes ; then
    # check for vala
    AM_PROG_VALAC([$VALA_REQUIRED])
    AC_PATH_PROG(VAPIGEN, vapigen, no)
    if test "x$VAPIGEN" == "xno"; then
        AC_MSG_ERROR([Cannot find the "vapigen" binary in your PATH])
    fi
    AC_SUBST(VAPIGEN)
fi

AM_CONDITIONAL(WITH_VALA, [test "x$enable_vala" = "xyes"])

VAPIDIR="${datadir}/vala/vapi"
AC_SUBST(VAPIDIR)

AC_ARG_WITH([python],
  AS_HELP_STRING([--with-python], [build python bindings @<:@default=yes@:>@]),
  [case "${withval}" in
     yes|no) ;;
     *) AC_MSG_ERROR([bad value ${withval} for python option]) ;;
   esac],
  [withval=yes])

if test "$with_gtk" = "3.0"
then
  WITH_PYTHON=no
else
  WITH_PYTHON=$withval
fi

if test "$WITH_PYTHON" = "yes"; then
  PKG_CHECK_MODULES(PYGTK, pygtk-2.0 >= 2.0.0)
  AC_SUBST(PYGTK_CFLAGS)
  AC_SUBST(PYGTK_LIBS)

  AM_PATH_PYTHON

  AC_MSG_CHECKING([whether $PYTHON version >= 2.0])
  HAVE_PYTHON_REQUIRED=no
  AM_PYTHON_CHECK_VERSION([$PYTHON], [2.0],
      [HAVE_PYTHON_REQUIRED="yes"],
      [HAVE_PYTHON_REQUIRED="no"])

  AC_MSG_RESULT($HAVE_PYTHON_REQUIRED)

  if test "x$HAVE_PYTHON_REQUIRED" != "xyes"
  then
    AC_MSG_ERROR("No suitable python found")
  fi

  AM_CHECK_PYTHON_HEADERS(have_python_headers=yes,have_python_headers=no)

  if test "x$have_python_headers" != "xyes"
  then
    AC_MSG_ERROR("No python development headers found")
  fi
fi

AM_CONDITIONAL(WITH_PYTHON, [test "$WITH_PYTHON" = "yes"])

dnl ===========================================================================
dnl check compiler flags

AC_DEFUN([SPICE_CC_TRY_FLAG], [
  AC_MSG_CHECKING([whether $CC supports $1])

  spice_save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS $1"

  AC_COMPILE_IFELSE([AC_LANG_SOURCE([ ])], [spice_cc_flag=yes], [spice_cc_flag=no])
  CFLAGS="$spice_save_CFLAGS"

  if test "x$spice_cc_flag" = "xyes"; then
    ifelse([$2], , :, [$2])
  else
    ifelse([$3], , :, [$3])
  fi
  AC_MSG_RESULT([$spice_cc_flag])
])


dnl Use lots of warning flags with with gcc and compatible compilers

dnl Note: if you change the following variable, the cache is automatically
dnl skipped and all flags rechecked.  So there's no need to do anything
dnl else.  If for any reason you need to force a recheck, just change
dnl MAYBE_WARN in an ignorable way (like adding whitespace)

dnl MAYBE_WARN="-Wall -Wno-sign-compare -Werror -Wno-deprecated-declarations"

MAYBE_WARN="-Wall -Wno-sign-compare -Wno-deprecated-declarations"

AC_ARG_ENABLE([werror],
  AS_HELP_STRING([--enable-werror], [Use -Werror (if supported)]),
  [set_werror="$enableval"],
  [if test -d $srcdir/.git; then
     is_git_version=true
     set_werror=yes
   else
     set_werror=no
   fi])

# invalidate cached value if MAYBE_WARN has changed
if test "x$spice_cv_warn_maybe" != "x$MAYBE_WARN"; then
	unset spice_cv_warn_cflags
fi
AC_CACHE_CHECK([for supported warning flags], spice_cv_warn_cflags, [
	echo
	WARN_CFLAGS=""

	# Some warning options are not supported by all versions of
	# gcc, so test all desired options against the current
	# compiler.
	#
	# Note that there are some order dependencies
	# here. Specifically, an option that disables a warning will
	# have no net effect if a later option then enables that
	# warnings, (perhaps implicitly). So we put some grouped
	# options (-Wall and -Wextra) up front and the -Wno options
	# last.

	for W in $MAYBE_WARN; do
		SPICE_CC_TRY_FLAG([$W], [WARN_CFLAGS="$WARN_CFLAGS $W"])
	done
	if test "$set_werror" != "no"; then
		SPICE_CC_TRY_FLAG(["-Werror"], [WARN_CFLAGS="$WARN_CFLAGS -Werror"])
	fi

	spice_cv_warn_cflags=$WARN_CFLAGS
	spice_cv_warn_maybe=$MAYBE_WARN

	AC_MSG_CHECKING([which warning flags were supported])])
WARN_CFLAGS="$spice_cv_warn_cflags"
SPICE_CFLAGS="$SPICE_CFLAGS $WARN_CFLAGS"

AC_SUBST(SPICE_CFLAGS)

SPICE_GLIB_CFLAGS="$PROTOCOL_CFLAGS $PIXMAN_CFLAGS $CELT051_CFLAGS $PULSE_CFLAGS $GST_CFLAGS $GLIB2_CFLAGS $GIO_CFLAGS $GOBJECT2_CFLAGS $SSL_CFLAGS $SASL_CFLAGS"
SPICE_GTK_CFLAGS="$SPICE_GLIB_CFLAGS $GTK_CFLAGS "

AC_SUBST(SPICE_GLIB_CFLAGS)
AC_SUBST(SPICE_GTK_CFLAGS)

AC_SUBST(SPICE_COMMON_SRCDIR)
AC_SUBST(SPICE_GLIB_REQUIRES)
AC_SUBST(SPICE_GTK_REQUIRES)

m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

AC_OUTPUT([
Makefile
spice-client-glib-2.0.pc
spice-client-gtk-2.0.pc
spice-client-gtk-3.0.pc
spice-controller.pc
common/Makefile
data/Makefile
data/spicy.desktop.in
data/spicy.nsis
po/Makefile.in
python_modules/Makefile
gtk/Makefile
gtk/controller/Makefile
doc/Makefile
doc/reference/Makefile
vapi/Makefile
])

dnl ==========================================================================
AC_MSG_NOTICE([

        Spice-Gtk $VERSION
        ==============

        prefix:                   ${prefix}
        c compiler:               ${CC}

        Coroutine:                ${with_coroutine}
        Audio:                    ${with_audio}
        Target:                   ${red_target}
        SASL support:             ${enable_sasl}
        Smartcard support:        ${enable_smartcard}
        USB redirection support:  ${have_usbredir}
        Gtk:                      $GTK_API_VERSION

        Now type 'make' to build $PACKAGE

])