configure.in

# Process this file with autoconf to produce a configure script.
# require autoconf 2.54
AC_PREREQ(2.54)

# Making releases:
#   GTK_MICRO_VERSION += 1;
#   GTK_INTERFACE_AGE += 1;
#   GTK_BINARY_AGE += 1;
# if any functions have been added, set GTK_INTERFACE_AGE to 0.
# if backwards compatibility has been broken,
# set GTK_BINARY_AGE and GTK_INTERFACE_AGE to 0.

m4_define([gtk_major_version], [2])
m4_define([gtk_minor_version], [11])
m4_define([gtk_micro_version], [7])
m4_define([gtk_version],
          [gtk_major_version.gtk_minor_version.gtk_micro_version])
m4_define([gtk_interface_age], [0])
m4_define([gtk_binary_age],
          [m4_eval(100 * gtk_minor_version + gtk_micro_version)])
# This is the X.Y used in -lgtk-FOO-X.Y
m4_define([gtk_api_version], [2.0])

# Define a string for the earliest version that this release has
# backwards binary compatibility with for all interfaces a module
# might. Unless we add module-only API with lower stability
# guarantees, this should be unchanged until we break binary compat
# for GTK+.
#
#GTK_BINARY_VERSION=$GTK_MAJOR_VERSION.$GTK_MINOR_VERSION.$LT_CURRENT
m4_define([gtk_binary_version], [2.10.0])

# required versions of other packages
m4_define([glib_required_version], [2.13.5])
m4_define([pango_required_version], [1.17.3])
m4_define([atk_required_version], [1.9.0])
m4_define([cairo_required_version], [1.2.0])


AC_INIT([gtk+], [gtk_version],
        [http://bugzilla.gnome.org/enter_bug.cgi?product=gtk%2B],
	[gtk+])

AC_CONFIG_SRCDIR([gdk/gdktypes.h])

# Save this value here, since automake will set cflags later
cflags_set=${CFLAGS+set}

AM_INIT_AUTOMAKE(no-define)
AM_CONFIG_HEADER(config.h)

#
# For each of the libraries we build, we define the following
 
# substituted variables:
#
# foo_PACKAGES:     pkg-config packages this library requires
# foo_EXTRA_LIBS:   Libraries this module requires not pulled in by pkg-config
# foo_EXTRA_CFLAGS: cflags this module requires not pulled in by pkg-config
# foo_DEP_LIBS:     All libraries this module requires
# foo_DEP_CFLAGS:   All cflags this module requires


GTK_MAJOR_VERSION=gtk_major_version
GTK_MINOR_VERSION=gtk_minor_version
GTK_MICRO_VERSION=gtk_micro_version
GTK_INTERFACE_AGE=gtk_interface_age
GTK_BINARY_AGE=gtk_binary_age
GTK_VERSION=gtk_version
GTK_API_VERSION=gtk_api_version
GTK_BINARY_VERSION=gtk_binary_version
AC_SUBST(GTK_MAJOR_VERSION)
AC_SUBST(GTK_MINOR_VERSION)
AC_SUBST(GTK_MICRO_VERSION)
AC_SUBST(GTK_INTERFACE_AGE)
AC_SUBST(GTK_BINARY_AGE)
AC_SUBST(GTK_API_VERSION)
AC_SUBST(GTK_VERSION)
AC_SUBST(GTK_BINARY_VERSION)

# libtool versioning
#LT_RELEASE=$GTK_MAJOR_VERSION.$GTK_MINOR_VERSION
#LT_CURRENT=`expr $GTK_MICRO_VERSION - $GTK_INTERFACE_AGE`
#LT_REVISION=$GTK_INTERFACE_AGE
#LT_AGE=`expr $GTK_BINARY_AGE - $GTK_INTERFACE_AGE`
#LT_CURRENT_MINUS_AGE=`expr $LT_CURRENT - $LT_AGE`

m4_define([lt_current], [m4_eval(100 * gtk_minor_version + gtk_micro_version - gtk_interface_age)])
m4_define([lt_revision], [gtk_interface_age])
m4_define([lt_age], [m4_eval(gtk_binary_age - gtk_interface_age)])
LT_VERSION_INFO="lt_current:lt_revision:lt_age"
LT_CURRENT_MINUS_AGE=m4_eval(lt_current - lt_age)
AC_SUBST(LT_VERSION_INFO)
AC_SUBST(LT_CURRENT_MINUS_AGE)


#
# gdk-pixbuf gets versioned separately, and for now, using standard
# libtool versioning, not GTK+-style versioning
#
GDK_PIXBUF_MAJOR=gtk_major_version
GDK_PIXBUF_MINOR=gtk_minor_version
GDK_PIXBUF_MICRO=gtk_micro_version
GDK_PIXBUF_VERSION="${GDK_PIXBUF_MAJOR}.${GDK_PIXBUF_MINOR}.${GDK_PIXBUF_MICRO}"
AC_SUBST(GDK_PIXBUF_MAJOR)
AC_SUBST(GDK_PIXBUF_MINOR)
AC_SUBST(GDK_PIXBUF_MICRO)
AC_SUBST(GDK_PIXBUF_VERSION)

GETTEXT_PACKAGE=gtk20
AC_SUBST(GETTEXT_PACKAGE)
AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE")

AC_CANONICAL_HOST

MATH_LIB=-lm
AC_MSG_CHECKING([for native Win32])
case "$host" in
  *-*-mingw*)
    os_win32=yes
    MATH_LIB=
    ;;
  *)
    os_win32=no
    ;;
esac
AC_MSG_RESULT([$os_win32])

case $host in
  *-*-linux*)
    os_linux=yes
    ;;
esac
dnl Initialize libtool
AC_PROG_CC
AM_DISABLE_STATIC

dnl 
dnl Check for a working C++ compiler, but do not bail out, if none is found.
dnl We use this for an automated test for C++ header correctness.
dnl 
AC_CHECK_PROGS(CXX, [$CCC c++ g++ gcc CC cxx cc++ cl], gcc)
AC_LANG_SAVE
AC_LANG_CPLUSPLUS

AC_TRY_COMPILE(,[class a { int b; } c;], ,CXX=)
AM_CONDITIONAL(HAVE_CXX, test "$CXX" != "")

gtk_save_cxxflags="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -x objective-c++"
AC_TRY_COMPILE([@interface Foo @end],,OBJC=yes,OBJC=no)
AM_CONDITIONAL(HAVE_OBJC, test "$OBJC" == "yes")
CXXFLAGS="$gtk_save_cxxflags"
AC_LANG_RESTORE

if test "$os_win32" = "yes"; then
  if test x$enable_static = xyes -o x$enable_static = x; then
    AC_MSG_WARN([Disabling static library build, must build as DLL on Windows.])
    enable_static=no
  fi
  if test x$enable_shared = xno; then
    AC_MSG_WARN([Enabling shared library build, must build as DLL on Windows.])
  fi
  enable_shared=yes
fi

AC_LIBTOOL_WIN32_DLL
AM_PROG_LIBTOOL

# Make sure we use 64-bit versions of various file stuff.
AC_SYS_LARGEFILE

AM_PROG_AS
AC_PATH_PROG(NM, nm, nm)

dnl Initialize maintainer mode
AM_MAINTAINER_MODE

AC_MSG_CHECKING([for some Win32 platform])
case "$host" in
  *-*-mingw*|*-*-cygwin*)
    platform_win32=yes
    ;;
  *)
    platform_win32=no
    ;;
esac
AC_MSG_RESULT([$platform_win32])
AM_CONDITIONAL(PLATFORM_WIN32, test "$platform_win32" = "yes")

AM_CONDITIONAL(OS_WIN32, test "$os_win32" = "yes")
AM_CONDITIONAL(OS_UNIX, test "$os_win32" != "yes")
AM_CONDITIONAL(OS_LINUX, test "$os_linux" = "yes")

if test "$os_win32" = "yes"; then
  AC_CHECK_TOOL(WINDRES, windres, no)
  if test "$WINDRES" = no; then
    AC_MSG_ERROR([*** Could not find an implementation of windres in your PATH.])
  fi
  AC_CHECK_PROG(ms_librarian, lib.exe, yes, no)
fi
AM_CONDITIONAL(MS_LIB_AVAILABLE, test x$ms_librarian = xyes)

m4_define([debug_default],
          m4_if(m4_eval(gtk_minor_version % 2), [1], [yes], [minimum]))

dnl declare --enable-* args and collect ac_help strings
AC_ARG_ENABLE(debug,
              AC_HELP_STRING([--enable-debug=@<:@no/minimum/yes@:>@],
                             [turn on debugging @<:@default=debug_default@:>@]),,
              enable_debug=debug_default)
AC_ARG_ENABLE(shm,
              [AC_HELP_STRING([--enable-shm],
                              [support shared memory if available [default=yes]])],,
              [enable_shm="yes"])
AC_ARG_ENABLE(xkb,
              [AC_HELP_STRING([--enable-xkb],
                              [support XKB [default=maybe]])],,
              [enable_xkb="maybe"])
AC_ARG_ENABLE(xinerama,
              [AC_HELP_STRING([--enable-xinerama],
	                      [support xinerama extension if available [default=yes]])],,
              [enable_xinerama="yes"])
AC_ARG_ENABLE(rebuilds,
              [AC_HELP_STRING([--disable-rebuilds],
                              [disable all source autogeneration rules])],,
              [enable_rebuilds=yes])
AC_ARG_ENABLE(visibility,
              [AC_HELP_STRING([--disable-visibility],
                              [don't use ELF visibility attributes])],,
              [enable_visibility=yes])

AC_ARG_WITH(xinput,
            [AC_HELP_STRING([--with-xinput=@<:@no/yes@:>@], [support XInput])])

if test "$platform_win32" = yes; then
  gdktarget=win32
else
  gdktarget=x11
fi

AC_ARG_WITH(gdktarget, [  --with-gdktarget=[[x11/win32/quartz/directfb]] select non-default GDK target],
	gdktarget=$with_gdktarget)

AC_SUBST(gdktarget)
case $gdktarget in
  x11|win32|quartz|directfb) ;;
  *) AC_MSG_ERROR([Invalid target for GDK: use x11, quartz, directfb or win32.]);;
esac

gdktargetlib=libgdk-$gdktarget-$GTK_API_VERSION.la
gtktargetlib=libgtk-$gdktarget-$GTK_API_VERSION.la

AC_SUBST(gdktargetlib)
AC_SUBST(gtktargetlib)

if test "x$enable_debug" = "xyes"; then
  test "$cflags_set" = set || CFLAGS="$CFLAGS -g"
  GTK_DEBUG_FLAGS="-DG_ENABLE_DEBUG -DG_ERRORCHECK_MUTEXES" 
else
  if test "x$enable_debug" = "xno"; then
    GTK_DEBUG_FLAGS="-DG_DISABLE_ASSERT -DG_DISABLE_CHECKS -DG_DISABLE_CAST_CHECKS"
  else
    GTK_DEBUG_FLAGS="-DG_DISABLE_CAST_CHECKS"
  fi
fi


if test "x$enable_visibility" = "xno"; then
  GTK_DEBUG_FLAGS="$GTK_DEBUG_FLAGS -DDISABLE_VISIBILITY"
fi


AC_DEFINE_UNQUOTED(GTK_COMPILED_WITH_DEBUGGING, "${enable_debug}")

			
# Build time sanity check...
AM_SANITY_CHECK

# Checks for programs.
AC_ISC_POSIX
AM_PROG_CC_STDC
AC_PROG_INSTALL
AC_PROG_MAKE_SET

changequote(,)dnl
if test "x$GCC" = "xyes"; then
  case " $CFLAGS " in
  *[\ \	]-Wall[\ \	]*) ;;
  *) CFLAGS="$CFLAGS -Wall" ;;
  esac

  if test "x$enable_ansi" = "xyes"; then
    case " $CFLAGS " in
    *[\ \	]-ansi[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -ansi" ;;
    esac

    case " $CFLAGS " in
    *[\ \	]-pedantic[\ \	]*) ;;
    *) CFLAGS="$CFLAGS -pedantic" ;;
    esac
  fi
fi
changequote([,])dnl

# Ensure MSVC-compatible struct packing convention is used when
# compiling for Win32 with gcc.
# What flag to depends on gcc version: gcc3 uses "-mms-bitfields", while
# gcc2 uses "-fnative-struct".
if test x"$os_win32" = xyes; then
  if test x"$GCC" = xyes; then
    msnative_struct=''
    AC_MSG_CHECKING([how to get MSVC-compatible struct packing])
    if test -z "$ac_cv_prog_CC"; then
      our_gcc="$CC"
    else
      our_gcc="$ac_cv_prog_CC"
    fi
    case `$our_gcc --version | sed -e 's,\..*,.,' -e q` in
      2.)
	if $our_gcc -v --help 2>/dev/null | grep fnative-struct >/dev/null; then
	  msnative_struct='-fnative-struct'
	fi
	;;
      *)
	if $our_gcc -v --help 2>/dev/null | grep ms-bitfields >/dev/null; then
	  msnative_struct='-mms-bitfields'
	fi
	;;
    esac
    if test x"$msnative_struct" = x ; then
      AC_MSG_RESULT([no way])
      AC_MSG_WARN([produced libraries might be incompatible with MSVC-compiled code])
    else
      CFLAGS="$CFLAGS $msnative_struct"
      AC_MSG_RESULT([${msnative_struct}])
    fi
  fi
fi

# Honor aclocal flags
ACLOCAL="$ACLOCAL $ACLOCAL_FLAGS"

## Initial sanity check, done here so that users get told they 
## have the wrong dependencies as early in the process as possible.
## Later on we actually use the cflags/libs from separate pkg-config
## calls. Oh, also the later pkg-config calls don't include 
## the version requirements since those make the module lists 
## annoying to construct
PKG_CHECK_MODULES(BASE_DEPENDENCIES,
  [glib-2.0 >= glib_required_version dnl
   atk >= atk_required_version dnl
   pango >= pango_required_version dnl
   cairo >= cairo_required_version])

if test "$os_win32" != yes; then
    # libtool option to control which symbols are exported
    # right now, symbols starting with _ are not exported
    LIBTOOL_EXPORT_OPTIONS='-export-symbols-regex "^[[^_]].*"'
else
    # We currently use .def files on Windows (for gdk-pixbuf, gdk and gtk)
    LIBTOOL_EXPORT_OPTIONS=
fi
AC_SUBST(LIBTOOL_EXPORT_OPTIONS)

dnl ******************************************************
dnl * See whether to include shared library dependencies *
dnl ******************************************************

AC_ARG_ENABLE(explicit-deps, 
              [AC_HELP_STRING([--enable-explicit-deps=@<:@yes/no/auto@:>@],
                              [use explicit dependencies in .pc files [default=auto]])],,
              [enable_explicit_deps=auto])

AC_MSG_CHECKING([Whether to write dependencies into .pc files])
case $enable_explicit_deps in
  auto)
    export SED
    deplibs_check_method=`(./libtool --config; echo 'eval echo $deplibs_check_method') | sh`
    if test "x$deplibs_check_method" '!=' xpass_all || test "x$enable_static" = xyes ; then
      enable_explicit_deps=yes  
    else
      enable_explicit_deps=no  
    fi
  ;;
  yes|no) 
  ;;
  *) AC_MSG_ERROR([Value given to --enable-explicit-deps must be one of yes, no or auto])
  ;;
esac
AC_MSG_RESULT($enable_explicit_deps)

AM_CONDITIONAL(DISABLE_EXPLICIT_DEPS, test $enable_explicit_deps = no)

# define a MAINT-like variable REBUILD which is set if Perl
# and awk are found, so autogenerated sources can be rebuilt

AC_PATH_PROGS(PERL, perl5 perl)

# We would like indent, but don't require it.
AC_CHECK_PROG(INDENT, indent, indent)

REBUILD=\#
if test "x$enable_rebuilds" = "xyes" && \
     test -n "$PERL" && \
     $PERL -e 'exit !($] >= 5.002)' > /dev/null 2>&1 ; then
  REBUILD=
fi
AC_SUBST(REBUILD)

AC_CHECK_FUNCS(lstat mkstemp flockfile getc_unlocked)
AC_CHECK_FUNCS(localtime_r)

# _NL_TIME_FIRST_WEEKDAY is an enum and not a define
AC_MSG_CHECKING([for _NL_TIME_FIRST_WEEKDAY])
AC_TRY_LINK([#include <langinfo.h>], [
char c;
c = *((unsigned char *)  nl_langinfo(_NL_TIME_FIRST_WEEKDAY));
], gtk_ok=yes, gtk_ok=no)
AC_MSG_RESULT($gtk_ok)
if test "$gtk_ok" = "yes"; then
  AC_DEFINE([HAVE__NL_TIME_FIRST_WEEKDAY], [1],
	    [Define if _NL_TIME_FIRST_WEEKDAY is available])
fi

# _NL_MEASUREMENT_MEASUREMENT is an enum and not a define
AC_MSG_CHECKING([for _NL_MEASUREMENT_MEASUREMENT])
AC_TRY_LINK([#include <langinfo.h>], [
char c;
c = *((unsigned char *)  nl_langinfo(_NL_MEASUREMENT_MEASUREMENT));
], gtk_ok=yes, gtk_ok=no)
AC_MSG_RESULT($gtk_ok)
if test "$gtk_ok" = "yes"; then
  AC_DEFINE([HAVE__NL_MEASUREMENT_MEASUREMENT], [1],
	    [Define if _NL_MEASUREMENT_MEASUREMENT is available])
fi

# _NL_PAPER_HEIGHT is an enum and not a define
AC_MSG_CHECKING([for _NL_PAPER_HEIGHT])
AC_TRY_LINK([#include <langinfo.h>], [
char c;
c = *((unsigned char *)  nl_langinfo(_NL_PAPER_HEIGHT));
], gtk_ok=yes, gtk_ok=no)
AC_MSG_RESULT($gtk_ok)
if test "$gtk_ok" = "yes"; then
  AC_DEFINE([HAVE__NL_PAPER_HEIGHT], [1],
	    [Define if _NL_PAPER_HEIGHT is available])
fi

# _NL_PAPER_WIDTH is an enum and not a define
AC_MSG_CHECKING([for _NL_PAPER_WIDTH])
AC_TRY_LINK([#include <langinfo.h>], [
char c;
c = *((unsigned char *)  nl_langinfo(_NL_PAPER_WIDTH));
], gtk_ok=yes, gtk_ok=no)
AC_MSG_RESULT($gtk_ok)
if test "$gtk_ok" = "yes"; then
  AC_DEFINE([HAVE__NL_PAPER_WIDTH], [1],
	    [Define if _NL_PAPER_WIDTH is available])
fi
	
# sigsetjmp is a macro on some platforms, so AC_CHECK_FUNCS is not reliable
AC_MSG_CHECKING(for sigsetjmp)
AC_TRY_LINK([#include <setjmp.h>], [
sigjmp_buf env;
sigsetjmp(env, 0);
], gtk_ok=yes, gtk_ok=no)
AC_MSG_RESULT($gtk_ok)
if test "$gtk_ok" = "yes"; then
  AC_DEFINE(HAVE_SIGSETJMP)
fi

# i18n stuff
# TRANSLATORS:  Please note that gtk+ has both po/ and po-properties/
# directories.  If you add a new language to ALL_LINGUAS, please make
# sure that both po/ and po-properties/ have .po files that correspond
# to your language.  If you only add one to po/, the build will break
# in po-properties/.
ALL_LINGUAS="af am ang ar az az_IR be be@latin bg bn bn_IN br bs ca cs cy da de dz el en_CA en_GB eo es et eu fa fi fr ga gl gu he hi hr hu hy ia id is it ja ka ko ku li lt lv mi mk ml mn mr ms nb ne nl nn nso oc or pa pl pt pt_BR ro ru rw sk sl sq sr sr@Latn sr@ije sv ta te th tk tr tt uk ur uz uz@cyrillic vi wa xh yi zh_CN zh_HK zh_TW"
AM_GLIB_GNU_GETTEXT
LIBS="$LIBS $INTLLIBS"
AC_OUTPUT_COMMANDS([case "$CONFIG_FILES" in *po-properties/Makefile.in*)
        sed -e "/POTFILES =/r po-properties/POTFILES" po-properties/Makefile.in > po-properties/Makefile
      esac])

AM_GLIB_DEFINE_LOCALEDIR(GTK_LOCALEDIR)

dnl The DU4 header files don't provide library prototypes unless 
dnl -std1 is given to the native cc.
AC_MSG_CHECKING([for extra flags to get ANSI library prototypes])

gtk_save_LIBS=$LIBS
LIBS="$LIBS -lm"
AC_TRY_RUN([#include <math.h>
             int main (void) { return (log(1) != log(1.)); }],
     AC_MSG_RESULT(none needed),
     gtk_save_CFLAGS="$CFLAGS"
     CFLAGS="$CFLAGS -std1"
     AC_TRY_RUN([#include <math.h>
	         int main (void) { return (log(1) != log(1.)); }],
         AC_MSG_RESULT(-std1),
         AC_MSG_RESULT()
         CFLAGS="$gtk_save_CFLAGS"
         AC_MSG_WARN(
                [No ANSI prototypes found in library. (-std1 didn't work.)]),
	 true
     ),
     AC_MSG_RESULT(none needed)
)
LIBS=$gtk_save_LIBS

AC_MSG_CHECKING(for the BeOS)
case $host in
  *-*-beos*)
    AC_MSG_RESULT(yes)
    MATH_LIB=
  ;;
  *)
    AC_MSG_RESULT(no)
  ;;
esac

#
# see bug 162979
#
AC_MSG_CHECKING(for HP-UX)
case $host_os in
  hpux9* | hpux10* | hpux11*)
    AC_MSG_RESULT(yes)
    CFLAGS="$CFLAGS -DHPPEX -DSHMLINK"
  ;;
  *)
    AC_MSG_RESULT(no)
  ;;
esac

dnl NeXTStep cc seems to need this
AC_MSG_CHECKING([for extra flags for POSIX compliance])
AC_TRY_COMPILE([#include <dirent.h>], [DIR *dir;],
  AC_MSG_RESULT(none needed),
  gtk_save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS -posix"
  AC_TRY_COMPILE([#include <dirent.h>], [DIR *dir;],
    AC_MSG_RESULT(-posix),
    AC_MSG_RESULT()
    CFLAGS="$gtk_save_CFLAGS"
    AC_MSG_WARN([Could not determine POSIX flag. (-posix didn't work.)])))

#
# Run AM_PATH_GLIB_2_0 to make sure that GLib is installed and working
# 

GLIB_PACKAGES="gobject-2.0 gmodule-no-export-2.0"

AM_PATH_GLIB_2_0(glib_required_version, :,
  AC_MSG_ERROR([
*** GLIB glib_required_version or better is required. The latest version of 
*** GLIB is always available from ftp://ftp.gtk.org/pub/gtk/.]),
  gobject gmodule-no-export gthread)

# See if it's safe to turn G_DISABLE_DEPRECATED on.
GLIB_VERSION_MAJOR_MINOR=`$PKG_CONFIG --modversion glib-2.0 | sed "s/\.@<:@^.@:>@*\$//"`
GLIB_REQUIRED_VERSION_MAJOR_MINOR=`echo glib_required_version | sed "s/\.@<:@^.@:>@*\$//"`
if test "x$GLIB_VERSION_MAJOR_MINOR" = "x$GLIB_REQUIRED_VERSION_MAJOR_MINOR"; then
  CFLAGS="-DG_DISABLE_DEPRECATED $CFLAGS"
fi


dnl
dnl Check for bind_textdomain_codeset, including -lintl if GLib brings it in.
dnl
gtk_save_LIBS=$LIBS
LIBS="$LIBS $GLIB_LIBS"
AC_CHECK_FUNCS(bind_textdomain_codeset)
LIBS=$gtk_save_LIBS

AC_CHECK_HEADERS(pwd.h, AC_DEFINE(HAVE_PWD_H))
AC_CHECK_HEADERS(sys/time.h, AC_DEFINE(HAVE_SYS_TIME_H))
AC_CHECK_HEADERS(unistd.h, AC_DEFINE(HAVE_UNISTD_H))
AC_CHECK_HEADERS(ftw.h, AC_DEFINE(HAVE_FTW_H))

AC_MSG_CHECKING([for GNU ftw extensions])
AC_TRY_COMPILE([#define _XOPEN_SOURCE 500
#define _GNU_SOURCE
#include <ftw.h>], [int flags = FTW_ACTIONRETVAL;], gtk_ok=yes, gtk_ok=no)
if test $gtk_ok = yes; then
    AC_MSG_RESULT([yes])
    AC_DEFINE(HAVE_GNU_FTW,1,[Have GNU ftw])
else
    AC_MSG_RESULT([no])
fi

saved_cflags="$CFLAGS"
saved_ldflags="$LDFLAGS"


# Checks for header files.
AC_HEADER_STDC

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST

# Checks for library functions.
AC_TYPE_SIGNAL
AC_FUNC_MMAP

AC_CHECK_FUNCS(mallinfo)
AC_CHECK_FUNCS(getresuid)
AC_TYPE_UID_T

# Check if <sys/select.h> needs to be included for fd_set
AC_MSG_CHECKING([for fd_set])
AC_TRY_COMPILE([#include <sys/types.h>],
        [fd_set readMask, writeMask;], gtk_ok=yes, gtk_ok=no)
if test $gtk_ok = yes; then
    AC_MSG_RESULT([yes, found in sys/types.h])
else
    AC_HEADER_EGREP(fd_mask, sys/select.h, gtk_ok=yes)
    if test $gtk_ok = yes; then
        AC_DEFINE(HAVE_SYS_SELECT_H)
        AC_MSG_RESULT([yes, found in sys/select.h])
    else
	AC_DEFINE(NO_FD_SET)
	AC_MSG_RESULT(no)
    fi
fi

# `widechar' tests for gdki18n.h
AC_MSG_CHECKING(for wchar.h)
AC_TRY_CPP([#include <wchar.h>], gdk_wchar_h=yes, gdk_wchar_h=no)
if test $gdk_wchar_h = yes; then
   AC_DEFINE(HAVE_WCHAR_H,1,[Have wchar.h include file])
fi
AC_MSG_RESULT($gdk_wchar_h)

# Check for wctype.h (for iswalnum)
AC_MSG_CHECKING(for wctype.h)
AC_TRY_CPP([#include <wctype.h>], gdk_wctype_h=yes, gdk_wctype_h=no)
if test $gdk_wctype_h = yes; then
   AC_DEFINE(HAVE_WCTYPE_H,1,[Have wctype.h include file])
fi
AC_MSG_RESULT($gdk_wctype_h)

# in Solaris 2.5, `iswalnum' is in -lw
GDK_WLIBS=
AC_CHECK_FUNC(iswalnum,,[AC_CHECK_LIB(w,iswalnum,GDK_WLIBS=-lw)])

oLIBS="$LIBS"
LIBS="$LIBS $GDK_WLIBS"
# The following is necessary for Linux libc-5.4.38
AC_MSG_CHECKING(if iswalnum() and friends are properly defined)
AC_TRY_LINK([#include <stdlib.h>],[
#if (defined(HAVE_WCTYPE_H) || defined(HAVE_WCHAR_H))
#  ifdef HAVE_WCTYPE_H
#    include <wctype.h>
#  else
#    ifdef HAVE_WCHAR_H
#      include <wchar.h>
#    endif
#  endif
#else
#  define iswalnum(c) ((wchar_t)(c) <= 0xFF && isalnum(c))
#endif
iswalnum((wchar_t) 0);
], gdk_working_wctype=yes, gdk_working_wctype=no)
LIBS="$oLIBS"

if test $gdk_working_wctype = no; then
   AC_DEFINE(HAVE_BROKEN_WCTYPE,1,[Is the wctype implementation broken])
   GDK_WLIBS=
fi
AC_MSG_RESULT($gdk_working_wctype)
AC_SUBST(GDK_WLIBS)

# Check for uxtheme.h (for MS-Windows Engine)
AC_MSG_CHECKING(for uxtheme.h)
AC_TRY_CPP([#include <uxtheme.h>], gtk_uxtheme_h=yes, gtk_uxtheme_h=no)
if test $gtk_uxtheme_h = yes; then
   AC_DEFINE(HAVE_UXTHEME_H,1,[Have uxtheme.h include file])
fi
AC_MSG_RESULT($gtk_uxtheme_h)

# Checks for gdkspawn
AC_CHECK_HEADERS(crt_externs.h)
AC_CHECK_FUNCS(_NSGetEnviron)


##################################################
# Checks for gdk-pixbuf
##################################################

dnl ********************************************************
dnl * See whether we need to load our modules as .la files *
dnl ********************************************************

use_la_modules=false
case $host in
  *-aix*) use_la_modules=true
esac

if $use_la_modules ; then
   AC_DEFINE(USE_LA_MODULES, 1, [Whether to load modules via .la files rather than directly])
fi


AC_MSG_CHECKING(whether to build gmodulized gdk-pixbuf)

AC_ARG_ENABLE(modules,
              [AC_HELP_STRING([--disable-modules],
                              [disable dynamic module loading])])

dynworks=false
deps=
if test x$enable_modules = xno; then
    AC_MSG_RESULT(no)
else
    AC_MSG_RESULT(yes)
    AC_MSG_CHECKING(whether dynamic modules work)
    ## for loop is to strip newline 
    tmp=`$PKG_CONFIG --variable=gmodule_supported gmodule-no-export-2.0`
    for I in $tmp; do
        dynworks=$I
    done

    dnl Now we check to see if our libtool supports shared lib deps
    dnl (in a rather ugly way even)
    if $dynworks; then
        pixbuf_libtool_config="${CONFIG_SHELL-/bin/sh} ./libtool --config"
        pixbuf_deplibs_check=`$pixbuf_libtool_config | \
            grep '^[[a-z_]]*check[[a-z_]]*_method=[['\''"]]' | \
            sed 's/.*[['\''"]]\(.*\)[['\''"]]$/\1/'`
        if test "x$pixbuf_deplibs_check" = "xnone" || \
           test "x$pixbuf_deplibs_check" = "xunknown" || \
           test "x$pixbuf_deplibs_check" = "x"; then
            dynworks=false
        fi
    fi

    if $dynworks; then
        AC_DEFINE(USE_GMODULE)
        AC_MSG_RESULT(yes)
    else
        AC_MSG_RESULT(no)
    fi
fi

dnl We allow people to disable image loaders explicitely, but if they don't we error
dnl out so that people don't accidentally build without them.

AC_ARG_WITH(libpng,
            [AC_HELP_STRING([--without-libpng],
                            [disable PNG loader for gdk-pixbuf])])
AC_ARG_WITH(libjpeg,
            [AC_HELP_STRING([--without-libjpeg],
                            [disable JPEG loader for gdk-pixbuf])])
AC_ARG_WITH(libtiff,
            [AC_HELP_STRING([--without-libtiff],
                            [disable TIFF loader for gdk-pixbuf])])

dnl Test for libtiff
  if test x$with_libtiff != xno && test -z "$LIBTIFF"; then
    AC_CHECK_LIB(tiff, TIFFReadRGBAImageOriented,
      [AC_CHECK_HEADER(tiffio.h,
        TIFF='tiff'; LIBTIFF='-ltiff',
        AC_MSG_WARN(*** TIFF loader will not be built (TIFF header files not found) ***))],
      [AC_CHECK_LIB(tiff, TIFFWriteScanline,
        [AC_CHECK_HEADER(tiffio.h,
          TIFF='tiff'; LIBTIFF='-ltiff -ljpeg -lz',
          AC_MSG_WARN(*** TIFF loader will not be built (TIFF header files not found) ***))],
        [AC_CHECK_LIB(tiff34, TIFFFlushData,
          [AC_CHECK_HEADER(tiffio.h,
            TIFF='tiff'; LIBTIFF='-ltiff34 -ljpeg -lz',
            AC_MSG_WARN(*** TIFF loader will not be built (TIFF header files not found) ***))],
        AC_MSG_WARN(*** TIFF loader will not be built (TIFF library not found) ***), -ljpeg -lz -lm)], -ljpeg -lz -lm)], -lm)
  fi

  if test x$with_libtiff != xno && test -z "$LIBTIFF"; then
     AC_MSG_ERROR([
*** Checks for TIFF loader failed. You can build without it by passing 
*** --without-libtiff to configure but some programs using GTK+ may
*** not work properly])
  fi

dnl Test for libjpeg
  if test x$with_libjpeg != xno && test -z "$LIBJPEG"; then
    AC_CHECK_LIB(jpeg, jpeg_destroy_decompress,
      jpeg_ok=yes,
      jpeg_ok=no
      AC_MSG_WARN(*** JPEG loader will not be built (JPEG library not found) ***))
    if test "$jpeg_ok" = yes; then
      AC_MSG_CHECKING([for jpeglib.h])
      AC_TRY_CPP(
[#include <stdio.h>
#undef PACKAGE
#undef VERSION
#undef HAVE_STDLIB_H
#include <jpeglib.h>],
        jpeg_ok=yes,
        jpeg_ok=no)
      AC_MSG_RESULT($jpeg_ok)
      if test "$jpeg_ok" = yes; then
        LIBJPEG='-ljpeg'
        AC_CHECK_LIB(jpeg, jpeg_simple_progression,     
          AC_DEFINE(HAVE_PROGRESSIVE_JPEG),
          AC_MSG_WARN(JPEG library does not support progressive saving.))
      else
          AC_MSG_WARN(*** JPEG loader will not be built (JPEG header file not found) ***)
      fi
    fi
  fi

  if test x$with_libjpeg != xno && test -z "$LIBJPEG"; then
     AC_MSG_ERROR([
*** Checks for JPEG loader failed. You can build without it by passing 
*** --without-libjpeg to configure but some programs using GTK+ may
*** not work properly])
  fi

dnl Test for libpng
  if test x$with_libpng != xno && test -z "$LIBPNG"; then
    AC_MSG_CHECKING(for libpng12)
    if $PKG_CONFIG --exists libpng12 ; then
        AC_MSG_RESULT(yes)
        PNG='png'
	PNG_DEP_CFLAGS_PACKAGES=libpng12
	LIBPNG=`$PKG_CONFIG --libs libpng12`
    else
      AC_MSG_RESULT(no)
      AC_CHECK_LIB(png, png_read_info,
        [AC_CHECK_HEADER(png.h,
          png_ok=yes,
          png_ok=no)],
        AC_MSG_WARN(*** PNG loader will not be built (PNG library not found) ***), -lz -lm)
      if test "$png_ok" = yes; then
        AC_MSG_CHECKING([for png_structp in png.h])
        AC_TRY_COMPILE([#include <png.h>],
          [png_structp pp; png_infop info; png_colorp cmap; png_create_read_struct;],
          png_ok=yes,
          png_ok=no)
        AC_MSG_RESULT($png_ok)
        if test "$png_ok" = yes; then
          PNG='png'; LIBPNG='-lpng -lz'
        else
          AC_MSG_WARN(*** PNG loader will not be built (PNG library is too old) ***)
        fi
      else
       AC_MSG_WARN(*** PNG loader will not be built (PNG header file not found) ***)
      fi
    fi
  fi

  if test x$with_libpng != xno && test -z "$LIBPNG"; then
     AC_MSG_ERROR([
*** Checks for PNG loader failed. You can build without it by passing 
*** --without-libpng to configure but many programs using GTK+ will
*** not work properly. The PNG loader is also needed if you are compiling
*** from CVS.])
  fi

AC_SUBST(LIBTIFF)
AC_SUBST(LIBJPEG)
AC_SUBST(LIBPNG)

AM_CONDITIONAL(BUILD_DYNAMIC_MODULES, $dynworks)

#
# Allow building some or all gdk-pixbuf loaders included
#
AC_MSG_CHECKING(pixbuf loaders to build)

dnl due to an autoconf bug, commas in the first arg to
dnl AC_HELP_STRING cause problems.
dnl AC_HELP_STRING([--with-included-loaders=LOADER1 LOADER2 ...],
dnl                [build the specified loaders into gdk-pixbuf])
AC_ARG_WITH(included_loaders,
[  --with-included-loaders=LOADER1,LOADER2,...
                          build the specified loaders into gdk-pixbuf])

if $dynworks; then 
   :
else
   ## if the option was specified, leave it; otherwise disable included loaders
   if test x$with_included_loaders = xno; then
           with_included_loaders=yes
   fi
fi

all_loaders="png,bmp,wbmp,gif,ico,ani,jpeg,pnm,ras,tiff,xpm,xbm,tga,pcx"
included_loaders=""
# If no loaders specified, include all
if test "x$with_included_loaders" = xyes ; then
  included_loaders="$all_loaders"
else
  included_loaders="$with_included_loaders"
fi

AC_MSG_RESULT($included_loaders)

INCLUDED_LOADER_OBJ=
INCLUDED_LOADER_DEFINE=

IFS="${IFS= 	}"; gtk_save_ifs="$IFS"; IFS=","
for loader in $included_loaders; do
 if echo "$all_loaders" | egrep "(^|,)$loader(\$|,)" > /dev/null; then
   :
 else
   AC_MSG_ERROR([the specified loader $loader does not exist])
 fi

 INCLUDED_LOADER_OBJ="$INCLUDED_LOADER_OBJ libstatic-pixbufloader-$loader.la"
 INCLUDED_LOADER_DEFINE="$INCLUDED_LOADER_DEFINE -DINCLUDE_$loader"
 eval INCLUDE_$loader=yes
done
IFS="$gtk_save_ifs"
AC_SUBST(INCLUDED_LOADER_OBJ)
AC_SUBST(INCLUDED_LOADER_DEFINE)

AM_CONDITIONAL(INCLUDE_PNG, [test x"$INCLUDE_png" = xyes])
AM_CONDITIONAL(INCLUDE_BMP, [test x"$INCLUDE_bmp" = xyes])
AM_CONDITIONAL(INCLUDE_WBMP, [test x"$INCLUDE_wbmp" = xyes])
AM_CONDITIONAL(INCLUDE_GIF, [test x"$INCLUDE_gif" = xyes])
AM_CONDITIONAL(INCLUDE_ICO, [test x"$INCLUDE_ico" = xyes])
AM_CONDITIONAL(INCLUDE_ANI, [test x"$INCLUDE_ani" = xyes])
AM_CONDITIONAL(INCLUDE_JPEG, [test x"$INCLUDE_jpeg" = xyes])
AM_CONDITIONAL(INCLUDE_PNM, [test x"$INCLUDE_pnm" = xyes])
AM_CONDITIONAL(INCLUDE_RAS, [test x"$INCLUDE_ras" = xyes])
AM_CONDITIONAL(INCLUDE_TIFF, [test x"$INCLUDE_tiff" = xyes])
AM_CONDITIONAL(INCLUDE_XPM, [test x"$INCLUDE_xpm" = xyes])
AM_CONDITIONAL(INCLUDE_XBM, [test x"$INCLUDE_xbm" = xyes])
AM_CONDITIONAL(INCLUDE_TGA, [test x"$INCLUDE_tga" = xyes])
AM_CONDITIONAL(INCLUDE_PCX, [test x"$INCLUDE_pcx" = xyes])

AC_HEADER_SYS_WAIT

AC_TYPE_SIGNAL

AM_CONDITIONAL(HAVE_TIFF, test "x$LIBTIFF" != x)
AM_CONDITIONAL(HAVE_PNG, test "x$LIBPNG" != x)
AM_CONDITIONAL(HAVE_JPEG, test "x$LIBJPEG" != x)

if $dynworks ; then
  STATIC_LIB_DEPS=
  if echo "$included_loaders" | egrep '(^|,)tiff($|,)' > /dev/null; then
    STATIC_LIB_DEPS="$STATIC_LIB_DEPS $LIBTIFF"
  fi
  if echo "$included_loaders" | egrep '(^|,)jpeg($|,)' > /dev/null; then
    STATIC_LIB_DEPS="$STATIC_LIB_DEPS $LIBJPEG"
  fi
  if echo "$included_loaders" | egrep '(^|,)png($|,)' > /dev/null; then
    STATIC_LIB_DEPS="$STATIC_LIB_DEPS $LIBPNG"
  fi
else
  STATIC_LIB_DEPS="$LIBTIFF $LIBJPEG $LIBPNG"
fi

# Checks to see whether we should include mediaLib
# support.
#
AC_CHECK_HEADER(sys/systeminfo.h, AC_DEFINE(HAVE_SYS_SYSTEMINFO_H))
AC_CHECK_HEADER(sys/sysinfo.h, AC_DEFINE(HAVE_SYS_SYSINFO_H))

AC_MSG_CHECKING(for mediaLib 2.3)
use_mlib25=no
# Check for a mediaLib 2.3 function since that is what the GTK+ mediaLib
# patch requires.
AC_CHECK_LIB(mlib, mlib_ImageSetStruct, use_mlib=yes, use_mlib=no)
if test $use_mlib = yes; then
    AC_DEFINE(USE_MEDIALIB)
    MEDIA_LIB=-lmlib

    AC_MSG_CHECKING(for mediaLib 2.5)
    # Check for a mediaLib 2.5 function since that is what is needed for
    # gdk_rgb_convert integration.
    AC_CHECK_LIB(mlib, mlib_VideoColorRGBint_to_BGRAint, use_mlib25=yes, use_mlib25=no)
    if test $use_mlib25 = yes; then
        AC_DEFINE(USE_MEDIALIB25)
    fi
fi
AM_CONDITIONAL(USE_MEDIALIB, test $use_mlib = yes)
AM_CONDITIONAL(USE_MEDIALIB25, test $use_mlib25 = yes)

# Checks to see if we should compile in MMX support (there will be
# a runtime test when the code is actually run to see if it should
# be used - this just checks if we can compile it.)
#
# This code is partially taken from Mesa
#
AC_MSG_CHECKING(for x86 platform)
case $host_cpu in
  i386|i486|i586|i686|i786|k6|k7)
	use_x86_asm=yes
        ;;
   *)
  	use_x86_asm=no
esac
AC_MSG_RESULT($use_x86_asm)

use_mmx_asm=no
if test $use_x86_asm = yes; then
    save_ac_ext=$ac_ext
    ac_ext=S
    
    AC_MSG_CHECKING(compiler support for MMX)
    cp $srcdir/gdk-pixbuf/pixops/scale_line_22_33_mmx.S conftest.S
    if AC_TRY_EVAL(ac_compile); then
        use_mmx_asm=yes
    fi

    rm -rf conftest*

    ac_ext=$save_ac_ext
    if test $use_mmx_asm = yes; then
      AC_DEFINE(USE_MMX)
      AC_MSG_RESULT(yes)
    else
      AC_MSG_RESULT(no)
    fi
fi

AM_CONDITIONAL(USE_MMX, test x$use_mmx_asm = xyes)

REBUILD_PNGS=
if test -z "$LIBPNG"; then
  REBUILD_PNGS=#
fi

dnl Look for a host system's gdk-pixbuf-csource if we are cross-compiling

AM_CONDITIONAL(CROSS_COMPILING, test $cross_compiling = yes)

if test $cross_compiling = yes; then
  AC_PATH_PROG(GDK_PIXBUF_CSOURCE, gdk-pixbuf-csource, no)
  AC_PATH_PROG(GTK_UPDATE_ICON_CACHE, gtk-update-icon-cache, no)
  if test x$GTK_UPDATE_ICON_CACHE = xno; then
    REBUILD_PNGS=#
  fi
fi

if test ! -f $srcdir/gtk/gtkbuiltincache.h && 
   test "x$REBUILD_PNGS" = "x#" ; then
     AC_MSG_ERROR([
*** gtkbuiltincache.h is not in the tree, and cannot be built
*** because you don't have libpng, or (when cross-compiling) you 
*** don't have a prebuilt gtk-update-icon-cache on the build system.])
fi

AC_SUBST(REBUILD_PNGS)

GDK_PIXBUF_PACKAGES="gmodule-no-export-2.0 gobject-2.0"
GDK_PIXBUF_EXTRA_LIBS="$STATIC_LIB_DEPS $MATH_LIB $MEDIA_LIB"
GDK_PIXBUF_EXTRA_CFLAGS= 
GDK_PIXBUF_DEP_LIBS="`$PKG_CONFIG --libs $GDK_PIXBUF_PACKAGES` $GDK_PIXBUF_EXTRA_LIBS"
GDK_PIXBUF_DEP_CFLAGS="`$PKG_CONFIG --cflags  gthread-2.0 $GDK_PIXBUF_PACKAGES $PNG_DEP_CFLAGS_PACKAGES` $GDK_PIXBUF_EXTRA_CFLAGS"

########################################
# Windowing system checks
########################################

GDK_PIXBUF_XLIB_PACKAGES=
GDK_PIXBUF_XLIB_EXTRA_CFLAGS=
GDK_PIXBUF_XLIB_EXTRA_LIBS=
	
X_PACKAGES=fontconfig
GDK_EXTRA_LIBS="$GDK_WLIBS"
GDK_EXTRA_CFLAGS=
	
# GTK+ uses some X calls, so needs to link against X directly
GTK_DEP_PACKAGES_FOR_X=
GTK_DEP_LIBS_FOR_X=

if test "x$gdktarget" = "xx11"; then
  #
  # We use fontconfig very peripherally when decoding the default
  # settings.
  #
  if $PKG_CONFIG --exists fontconfig; then : ; else
    AC_MSG_ERROR([
*** fontconfig (http://www.fontconfig.org) is required by the X11 backend.])
  fi

  #
  # Check for basic X packages; we use pkg-config if available
  #
  if $PKG_CONFIG --exists x11 xext xrender; then
    have_base_x_pc=true
    X_PACKAGES="$X_PACKAGES x11 xext xrender"
    x_libs="`$PKG_CONFIG --libs x11 xext xrender`"
    X_CFLAGS="`$PKG_CONFIG --cflags x11 xext xrender`"
    
    # Strip out any .la files that pkg-config might give us (this happens
    # with -uninstalled.pc files)
    x_libs_for_checks=
    for I in $x_libs ; do
      case $I in 
        *.la) ;;
        *) x_libs_for_checks="$x_libs_for_checks $I" ;;
      esac
    done
    
    GDK_PIXBUF_XLIB_PACKAGES="x11"
    GTK_PACKAGES_FOR_X="x11"
  else
    have_base_x_pc=false
    AC_PATH_XTRA
    if test x$no_x = xyes ; then
      AC_MSG_ERROR([X development libraries not found])
    fi
    
    x_cflags="$X_CFLAGS"
    x_libs_for_checks="$X_LIBS -lXext -lXrender -lX11 $X_EXTRA_LIBS"

    GDK_PIXBUF_XLIB_EXTRA_CFLAGS="$x_cflags"
    GDK_PIXBUF_XLIB_EXTRA_LIBS="$X_LIBS -lX11 $X_EXTRA_LIBS"
    GTK_DEP_LIBS_FOR_X="$X_LIBS -lXrender -lX11 $X_EXTRA_LIBS"
  fi

  # Extra libraries found during checks (-lXinerama, etc), not from pkg-config.
  x_extra_libs=

  gtk_save_cppflags="$CPPFLAGS"
  CPPFLAGS="$CPPFLAGS $X_CFLAGS"

  gtk_save_LIBS=$LIBS
  LIBS="$x_libs_for_checks $LIBS"
  
  # Sanity check for the X11 and Xext libraries. While everything we need from
  # Xext is optional, the chances a system has *none* of these things is so
  # small that we just unconditionally require it.
  AC_CHECK_FUNC(XOpenDisplay, :,
                AC_MSG_ERROR([*** libX11 not found. Check 'config.log' for more details.]))
  AC_CHECK_FUNC(XextFindDisplay, :,
                AC_MSG_ERROR([*** libXext not found. Check 'config.log' for more details.]))
  AC_CHECK_FUNC(XRenderQueryExtension, :,
                AC_MSG_ERROR([*** libXrender not found. Check 'config.log' for more details.]))

  # Check for xReply

  AC_MSG_CHECKING([if <X11/extensions/XIproto.h> is needed for xReply])
  AC_TRY_COMPILE([#include <X11/Xlibint.h>],
      [xReply *rep;],
      [AC_MSG_RESULT([no])],
      [AC_TRY_COMPILE([#include <X11/extensions/XIproto.h>
#include <X11/Xlibint.h>],
           [xReply *rep;],
           [AC_MSG_RESULT([yes])
            AC_DEFINE([NEED_XIPROTO_H_FOR_XREPLY], 1,
                [Define if <X11/extensions/XIproto.h> needed for xReply])],
           [AC_MSG_RESULT([unknown])
            AC_MSG_ERROR([xReply type unavailable. X11 is too old])])])

  # Check for XConvertCase, XInternAtoms (X11R6 specific)

  AC_CHECK_FUNCS(XConvertCase XInternAtoms)

  # Generic X11R6 check needed for XIM support; we could
  # probably use this to replace the above, but we'll
  # leave the separate checks for XConvertCase and XInternAtoms 
  # for clarity
  
  have_x11r6=false
  AC_CHECK_FUNC(XAddConnectionWatch,
      have_x11r6=true)

  if $have_x11r6; then
    AC_DEFINE(HAVE_X11R6,1,[Define if we have X11R6])
  fi
  AM_CONDITIONAL(HAVE_X11R6, $have_x11r6)

  # Check for XKB support.

  if test "x$enable_xkb" = "xyes"; then
        AC_MSG_WARN(XKB support explicitly enabled)
        AC_DEFINE(HAVE_XKB)
  elif test "x$enable_xkb" = "xmaybe"; then
        AC_CHECK_FUNC(XkbQueryExtension,
                      AC_DEFINE(HAVE_XKB))
  else
        AC_MSG_WARN(XKB support explicitly disabled)
  fi

  # Check for shaped window extension

  AC_CHECK_FUNC(XShapeCombineMask,
      AC_DEFINE(HAVE_SHAPE_EXT))

  # X SYNC check
  gtk_save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS $x_cflags"
  
  AC_CHECK_FUNC(XSyncQueryExtension,
      [AC_CHECK_HEADER(X11/extensions/sync.h,
	  AC_DEFINE(HAVE_XSYNC, 1, Have the SYNC extension library),
	  :, [#include <X11/Xlib.h>])])

  CFLAGS="$gtk_save_CFLAGS"

  # Xshm checks

  if test "x$enable_shm" = "xyes"; then
     # Check for the XShm extension, normally in Xext
     AC_CHECK_FUNC(XShmAttach,
	:,
	# On AIX, it is in XextSam instead
	[AC_CHECK_LIB(XextSam, XShmAttach, 
	    [GTK_ADD_LIB(x_extra_libs,XextSam)])])
  fi    

  if test "x$enable_shm" = "xyes"; then
    # Check for shared memory
    AC_CHECK_HEADER(sys/ipc.h, AC_DEFINE(HAVE_IPC_H), no_sys_ipc=yes)
    AC_CHECK_HEADER(sys/shm.h, AC_DEFINE(HAVE_SHM_H), no_sys_shm=yes)

    # Check for the X shared memory extension header file
    have_xshm=no 
    AC_MSG_CHECKING(X11/extensions/XShm.h)
    if test "x$no_xext_lib" = "xyes"; then
      :
    else
      gtk_save_CFLAGS="$CFLAGS"
      CFLAGS="$CFLAGS $x_cflags"
      AC_TRY_COMPILE([
#include <stdlib.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/XShm.h>
], [XShmSegmentInfo *x_shm_info;], have_xshm=yes)
      CFLAGS="$gtk_save_CFLAGS"
    fi
    AC_MSG_RESULT($have_xshm)
    if test $have_xshm = yes ; then
      AC_DEFINE(HAVE_XSHM_H)
    fi
  fi

  if test "x$enable_xinerama" = "xyes"; then
    # Check for Xinerama extension (Solaris impl or Xfree impl)
    gtk_save_cppflags="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS $x_cflags"
  
    case "$host" in
      *-*-solaris*)
          # Check for solaris
	  AC_MSG_CHECKING(for Xinerama support on Solaris)
	  
	  have_solaris_xinerama=false
	  AC_CHECK_FUNC(XineramaGetInfo,
	      [AC_CHECK_HEADER(X11/extensions/xinerama.h,
  		  [have_solaris_xinerama=true], :,
		  [#include <X11/Xlib.h>])])
		
          if $have_solaris_xinerama ; then
            AC_DEFINE(HAVE_SOLARIS_XINERAMA)
	    AC_DEFINE(HAVE_XINERAMA) 
            AC_MSG_RESULT(yes)
          else
            AC_MSG_RESULT(no)
          fi
          ;;
      *)
	  # Check for XFree
          AC_MSG_CHECKING(for Xinerama support on XFree86)
	  
          have_xfree_xinerama=false
          if $PKG_CONFIG --exists xinerama ; then
             have_xfree_xinerama=true
             X_PACKAGES="$X_PACKAGES xinerama"
          else    
	      AC_CHECK_LIB(Xinerama, XineramaQueryExtension,
	          [AC_CHECK_HEADER(X11/extensions/Xinerama.h, 
	              [GTK_ADD_LIB(x_extra_libs,Xinerama)
		      have_xfree_xinerama=true], :,
                      [#include <X11/Xlib.h>])])
          fi

          if $have_xfree_xinerama ; then
            AC_DEFINE(HAVE_XFREE_XINERAMA)
	    AC_DEFINE(HAVE_XINERAMA) 
            AC_MSG_RESULT(yes)
         else
            AC_MSG_RESULT(no)
         fi
         ;;
    esac
  fi
  
  # set up things for XInput

  if test "x$with_xinput" = "xxfree" || test "x$with_xinput" = "xyes"; then
    AC_DEFINE(XINPUT_XFREE)
    
    if $PKG_CONFIG --exists xi ; then
      X_PACKAGES="$X_PACKAGES xi"
    else
      GTK_ADD_LIB(x_extra_libs, Xi)
    fi
  else
    AC_DEFINE(XINPUT_NONE)
  fi

  AM_CONDITIONAL(XINPUT_XFREE, test x$with_xinput = xxfree || test x$with_xinput = xyes)

  # Check for the RANDR extension

  have_randr=false
  if $PKG_CONFIG --exists xrandr ; then
    have_randr=true
    X_PACKAGES="$X_PACKAGES xrandr"
  else    
    AC_CHECK_LIB(Xrandr, XRRUpdateConfiguration,
       [AC_CHECK_HEADER(X11/extensions/Xrandr.h,
          # RANDR requires RENDER
          [have_randr=true
          GTK_ADD_LIB(x_extra_libs, Xrender)
          GTK_ADD_LIB(x_extra_libs, Xrandr)],
	  :, [#include <X11/Xlib.h>])])
  fi

  if $have_randr ; then
     AC_DEFINE(HAVE_RANDR, 1, Have the Xrandr extension library)
  fi
       
  # Checks for Xcursor library
  
  if $PKG_CONFIG --exists xcursor ; then
    AC_DEFINE(HAVE_XCURSOR, 1, Have the Xcursor library)
    
    X_PACKAGES="$X_PACKAGES xcursor"
  fi

  # Checks for XFixes extension
  
  if $PKG_CONFIG --exists xfixes ; then
    AC_DEFINE(HAVE_XFIXES, 1, Have the XFIXES X extension)
    
    X_PACKAGES="$X_PACKAGES xfixes"
    GTK_PACKAGES_FOR_X="$GTK_PACKAGES_FOR_X xfixes"
  fi