dnl aclocal.m4 generated automatically by aclocal 1.4

dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
dnl PARTICULAR PURPOSE.

# Configure paths for IMLIB
# Frank Belew     98-8-31
# stolen from Manish Singh
# Shamelessly stolen from Owen Taylor

dnl AM_PATH_IMLIB([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for IMLIB, and define IMLIB_CFLAGS and IMLIB_LIBS
dnl
AC_DEFUN(AM_PATH_IMLIB,
[dnl 
dnl Get the cflags and libraries from the imlib-config script
dnl
AC_ARG_WITH(imlib-prefix,[  --with-imlib-prefix=DIR Location of imlib-config], imlib_prefix="$withval", imlib_prefix="")
AC_ARG_WITH(imlib-exec-prefix,[  --with-imlib-exec-prefix=DIR
                          Location of imlib-config],
            imlib_exec_prefix="$withval", imlib_exec_prefix="")
AC_ARG_ENABLE(imlibtest, [  --disable-imlibtest     Do not try to compile and run a test IMLIB program],
		    , enable_imlibtest=yes)

  if test x$imlib_exec_prefix != x ; then
     imlib_args="$imlib_args --exec-prefix=$imlib_exec_prefix"
     if test x${IMLIB_CONFIG+set} != xset ; then
        IMLIB_CONFIG=$imlib_exec_prefix/bin/imlib-config
     fi
  fi
  if test x$imlib_prefix != x ; then
     imlib_args="$imlib_args --prefix=$imlib_prefix"
     if test x${IMLIB_CONFIG+set} != xset ; then
        IMLIB_CONFIG=$imlib_prefix/bin/imlib-config
     fi
  fi

  AC_PATH_PROG(IMLIB_CONFIG, imlib-config, no)
  min_imlib_version=ifelse([$1], ,1.8.2,$1)
  AC_MSG_CHECKING(for IMLIB - version >= $min_imlib_version)
  no_imlib=""
  if test "$IMLIB_CONFIG" = "no" ; then
    no_imlib=yes
  else
    IMLIB_CFLAGS=`$IMLIB_CONFIG $imlibconf_args --cflags`
    IMLIB_LIBS=`$IMLIB_CONFIG $imlibconf_args --libs`

    imlib_major_version=`$IMLIB_CONFIG $imlib_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    imlib_minor_version=`$IMLIB_CONFIG $imlib_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    imlib_micro_version=`$IMLIB_CONFIG $imlib_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    if test "x$enable_imlibtest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $IMLIB_CFLAGS"
      LIBS="$LIBS $IMLIB_LIBS"
dnl
dnl Now check if the installed IMLIB is sufficiently new. (Also sanity
dnl checks the results of imlib-config to some extent
dnl
      rm -f conf.imlibtest
      AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <Imlib.h>

char*
my_strdup (char *str)
{
  char *new_str;
  
  if (str)
    {
      new_str = malloc ((strlen (str) + 1) * sizeof(char));
      strcpy (new_str, str);
    }
  else
    new_str = NULL;
  
  return new_str;
}

int main ()
{
  int major, minor, micro;
  char *tmp_version;

  system ("touch conf.imlibtest");

  /* HP/UX 9 (%@#!) writes to sscanf strings */
  tmp_version = my_strdup("$min_imlib_version");
  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
     printf("%s, bad version string\n", "$min_imlib_version");
     exit(1);
   }

    if (($imlib_major_version > major) ||
        (($imlib_major_version == major) && ($imlib_minor_version > minor)) ||
	(($imlib_major_version == major) && ($imlib_minor_version == minor) &&
	($imlib_micro_version >= micro)))
    {
      return 0;
    }
  else
    {
      printf("\n*** 'imlib-config --version' returned %d.%d, but the minimum version\n", $imlib_major_version, $imlib_minor_version);
      printf("*** of IMLIB required is %d.%d. If imlib-config is correct, then it is\n", major, minor);
      printf("*** best to upgrade to the required version.\n");
      printf("*** If imlib-config was wrong, set the environment variable IMLIB_CONFIG\n");
      printf("*** to point to the correct copy of imlib-config, and remove the file\n");
      printf("*** config.cache before re-running configure\n");
      return 1;
    }
}

],, no_imlib=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi
  if test "x$no_imlib" = x ; then
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$IMLIB_CONFIG" = "no" ; then
       echo "*** The imlib-config script installed by IMLIB could not be found"
       echo "*** If IMLIB was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the IMLIB_CONFIG environment variable to the"
       echo "*** full path to imlib-config."
     else
       if test -f conf.imlibtest ; then
        :
       else
          echo "*** Could not run IMLIB test program, checking why..."
          CFLAGS="$CFLAGS $IMLIB_CFLAGS"
          LIBS="$LIBS $IMLIB_LIBS"
          AC_TRY_LINK([
#include <stdio.h>
#include <Imlib.h>
],      [ return 0; ],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding IMLIB or finding the wrong"
          echo "*** version of IMLIB. If it is not finding IMLIB, you'll need to set your"
          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
          echo "*** is required on your system"
	  echo "***"
          echo "*** If you have an old version installed, it is best to remove it, although"
          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
        [ echo "*** The test program failed to compile or link. See the file config.log for the"
          echo "*** exact error that occured. This usually means IMLIB was incorrectly installed"
          echo "*** or that you have moved IMLIB since it was installed. In the latter case, you"
          echo "*** may want to edit the imlib-config script: $IMLIB_CONFIG" ])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi
     IMLIB_CFLAGS=""
     IMLIB_LIBS=""
     ifelse([$3], , :, [$3])
  fi
  AC_SUBST(IMLIB_CFLAGS)
  AC_SUBST(IMLIB_LIBS)
  rm -f conf.imlibtest
])

# Check for gdk-imlib
AC_DEFUN(AM_PATH_GDK_IMLIB,
[dnl 
dnl Get the cflags and libraries from the imlib-config script
dnl
AC_ARG_WITH(imlib-prefix,[  --with-imlib-prefix=PFX   Prefix where IMLIB is installed (optional)],
            imlib_prefix="$withval", imlib_prefix="")
AC_ARG_WITH(imlib-exec-prefix,[  --with-imlib-exec-prefix=PFX Exec prefix where IMLIB is installed (optional)],
            imlib_exec_prefix="$withval", imlib_exec_prefix="")
AC_ARG_ENABLE(imlibtest, [  --disable-imlibtest Do not try to compile and run a test IMLIB program],
		    , enable_imlibtest=yes)

  if test x$imlib_exec_prefix != x ; then
     imlib_args="$imlib_args --exec-prefix=$imlib_exec_prefix"
     if test x${IMLIB_CONFIG+set} != xset ; then
        IMLIB_CONFIG=$imlib_exec_prefix/bin/imlib-config
     fi
  fi
  if test x$imlib_prefix != x ; then
     imlib_args="$imlib_args --prefix=$imlib_prefix"
     if test x${IMLIB_CONFIG+set} != xset ; then
        IMLIB_CONFIG=$imlib_prefix/bin/imlib-config
     fi
  fi

  AC_PATH_PROG(IMLIB_CONFIG, imlib-config, no)
  min_imlib_version=ifelse([$1], ,1.8.2,$1)
  AC_MSG_CHECKING(for IMLIB - version >= $min_imlib_version)
  no_imlib=""
  if test "$IMLIB_CONFIG" = "no" ; then
    no_imlib=yes
  else
    GDK_IMLIB_CFLAGS=`$IMLIB_CONFIG $imlibconf_args --cflags-gdk`
    GDK_IMLIB_LIBS=`$IMLIB_CONFIG $imlibconf_args --libs-gdk`

    imlib_major_version=`$IMLIB_CONFIG $imlib_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    imlib_minor_version=`$IMLIB_CONFIG $imlib_args --version | \
           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    if test "x$enable_imlibtest" = "xyes" ; then
      ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $GDK_IMLIB_CFLAGS"
      LIBS="$LIBS $GDK_IMLIB_LIBS"
dnl
dnl Now check if the installed IMLIB is sufficiently new. (Also sanity
dnl checks the results of imlib-config to some extent
dnl
      rm -f conf.imlibtest
      AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <gdk_imlib.h>

int main ()
{
  int major, minor;
  char *tmp_version;

  system ("touch conf.gdkimlibtest");

  /* HP/UX 9 (%@#!) writes to sscanf strings */
  tmp_version = g_strdup("$min_imlib_version");
  if (sscanf(tmp_version, "%d.%d", &major, &minor) != 2) {
     printf("%s, bad version string\n", "$min_imlib_version");
     exit(1);
   }

    if (($imlib_major_version > major) ||
        (($imlib_major_version == major) && ($imlib_minor_version >= minor)))
    {
      return 0;
    }
  else
    {
      printf("\n*** 'imlib-config --version' returned %d.%d, but the minimum version\n", $imlib_major_version, $imlib_minor_version);
      printf("*** of IMLIB required is %d.%d. If imlib-config is correct, then it is\n", major, minor);
      printf("*** best to upgrade to the required version.\n");
      printf("*** If imlib-config was wrong, set the environment variable IMLIB_CONFIG\n");
      printf("*** to point to the correct copy of imlib-config, and remove the file\n");
      printf("*** config.cache before re-running configure\n");
      return 1;
    }
}

],, no_imlib=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
       CFLAGS="$ac_save_CFLAGS"
       LIBS="$ac_save_LIBS"
     fi
  fi
  if test "x$no_imlib" = x ; then
     AC_MSG_RESULT(yes)
     ifelse([$2], , :, [$2])     
  else
     AC_MSG_RESULT(no)
     if test "$IMLIB_CONFIG" = "no" ; then
       echo "*** The imlib-config script installed by IMLIB could not be found"
       echo "*** If IMLIB was installed in PREFIX, make sure PREFIX/bin is in"
       echo "*** your path, or set the IMLIB_CONFIG environment variable to the"
       echo "*** full path to imlib-config."
     else
       if test -f conf.gdkimlibtest ; then
        :
       else
          echo "*** Could not run IMLIB test program, checking why..."
          CFLAGS="$CFLAGS $GDK_IMLIB_CFLAGS"
          LIBS="$LIBS $GDK_IMLIB_LIBS"
          AC_TRY_LINK([
#include <stdio.h>
#include <gdk_imlib.h>
],      [ return 0; ],
        [ echo "*** The test program compiled, but did not run. This usually means"
          echo "*** that the run-time linker is not finding IMLIB or finding the wrong"
          echo "*** version of IMLIB. If it is not finding IMLIB, you'll need to set your"
          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
          echo "*** is required on your system"
	  echo "***"
          echo "*** If you have an old version installed, it is best to remove it, although"
          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
        [ echo "*** The test program failed to compile or link. See the file config.log for the"
          echo "*** exact error that occured. This usually means IMLIB was incorrectly installed"
          echo "*** or that you have moved IMLIB since it was installed. In the latter case, you"
          echo "*** may want to edit the imlib-config script: $IMLIB_CONFIG" ])
          CFLAGS="$ac_save_CFLAGS"
          LIBS="$ac_save_LIBS"
       fi
     fi
     IMLIB_CFLAGS=""
     IMLIB_LIBS=""
     ifelse([$3], , :, [$3])
  fi
  AC_SUBST(GDK_IMLIB_CFLAGS)
  AC_SUBST(GDK_IMLIB_LIBS)
  rm -f conf.gdkimlibtest
])

# The remaining macros to search for OpenGL/Mesa are adapted from the
# xscreensaver-3.14 package

###############################################################################
#
#       Some utility functions to make checking for X things easier.
#
###############################################################################

# Like AC_CHECK_HEADER, but it uses the already-computed -I directories.
#
AC_DEFUN(AC_CHECK_X_HEADER, [
  ac_save_CPPFLAGS="$CPPFLAGS"
  if test \! -z "$prefix" ; then 
    CPPFLAGS="$CPPFLAGS -I$prefix/include"
  fi
  if test \! -z "$includedir" ; then 
    CPPFLAGS="$CPPFLAGS -I$includedir"
  fi
  CPPFLAGS="$CPPFLAGS $X_CFLAGS"
  AC_CHECK_HEADER([$1], [$2], [$3])
  CPPFLAGS="$ac_save_CPPFLAGS"])

# Like AC_EGREP_HEADER, but it uses the already-computed -I directories.
#
AC_DEFUN(AC_EGREP_X_HEADER, [
  ac_save_CPPFLAGS="$CPPFLAGS"
  if test \! -z "$prefix" ; then 
    CPPFLAGS="$CPPFLAGS -I$prefix/include"
  fi
  if test \! -z "$includedir" ; then 
    CPPFLAGS="$CPPFLAGS -I$includedir"
  fi
  CPPFLAGS="$CPPFLAGS $X_CFLAGS"
  AC_EGREP_HEADER([$1], [$2], [$3], [$4])
  CPPFLAGS="$ac_save_CPPFLAGS"])

# Usage: HANDLE_X_PATH_ARG([variable_name],
#                          [--command-line-option],
#                          [descriptive string])
#
# All of the --with options take three forms:
#
#   --with-foo (or --with-foo=yes)
#   --without-foo (or --with-foo=no)
#   --with-foo=/DIR
#
# This function, HANDLE_X_PATH_ARG, deals with the /DIR case.  When it sees
# a directory (string beginning with a slash) it checks to see whether
# /DIR/include and /DIR/lib exist, and adds them to $X_CFLAGS and $X_LIBS
# as appropriate.
#
AC_DEFUN(HANDLE_X_PATH_ARG, [

   case "$[$1]" in
    yes) ;;
    no)  ;;

    /*)
     AC_MSG_CHECKING([for existence of [$3] headers directory])
     d=$[$1]/include
     if test -d $d; then
       X_CFLAGS="-I$d $X_CFLAGS"
       AC_MSG_RESULT($d)
     else
       AC_MSG_RESULT(not found ($d: no such directory))
     fi

     AC_MSG_CHECKING([for existence of [$3] libs directory])
     d=$[$1]/lib
     if test -d $d; then
       X_LIBS="-L$d $X_LIBS"
       AC_MSG_RESULT($d)
     else
       AC_MSG_RESULT(not found ($d: no such directory))
     fi

     # replace the directory string with "yes".
     [$1]_req="yes"
     [$1]=$[$1]_req
     ;;

    *)
     echo ""
     echo "error: argument to [$2] must be \"yes\", \"no\", or a directory."
     echo "       If it is a directory, then \`DIR/include' will be added to"
     echo "       the -I list, and \`DIR/lib' will be added to the -L list."
     exit 1
     ;;
   esac
  ])

AC_DEFUN(AM_FIND_GL,
[

AC_ARG_WITH(gl_dir,[  --with-gl-dir=DIR       Location of OpenGL/Mesa headers and libraries],
  [with_gl_dir="$withval"; with_gl_dir_req="$withval"],[with_gl_dir=yes])
AC_ARG_WITH(glut_dir,[  --with-glut-dir=DIR     Location of GLUT headers and libraries],
  [with_glut_dir="$withval"; with_glut_dir_req="$withval"],[with_glut_dir=no])

###############################################################################
#
#       Check for -lGL or -lMesa.
#
###############################################################################

have_gl=no
ac_have_mesa_gl=no
with_gl_req=unspecified

HANDLE_X_PATH_ARG(with_gl_dir, --with-gl-dir, GL)

ac_mesagl_version=unknown
ac_mesagl_version_string=unknown

if test "$with_gl_dir" = yes; then
  AC_CHECK_X_HEADER(GL/gl.h, have_gl=yes, have_gl=no)
  if test "$have_gl" = yes ; then
    AC_CHECK_X_HEADER(GL/glx.h, have_gl=yes, have_gl=no)
  fi

  # If we have the headers, try and figure out which vendor it's from.
  #
  if test "$have_gl" = yes ; then

    AC_DEFINE(HAVE_GL)

    # We need to know whether it's MesaGL so that we know which libraries
    # to link against.
    #
    AC_CACHE_CHECK([whether GL is really MesaGL], ac_cv_have_mesa_gl,
      [ac_cv_have_mesa_gl=no
       AC_EGREP_X_HEADER(Mesa, GL/glx.h, [ac_cv_have_mesa_gl=yes])
      ])
    ac_have_mesa_gl=$ac_cv_have_mesa_gl
 
    if test "$ac_have_mesa_gl" = no ; then
      OPENGLLIBS="-lGL -lGLU"
    else
      AC_DEFINE(HAVE_MESA_GL)
      OPENGLLIBS="-lMesaGL -lMesaGLU"
    fi

  fi

elif test "$with_gl_dir" != no; then
  echo "error: must be yes or no: --with-gl-dir=$with_gl_dir"
  exit 1
fi

AC_SUBST(OPENGLLIBS)

if test "$with_glut_dir" != no; then
  HANDLE_X_PATH_ARG(with_glut_dir, --with-glut-dir, GLUT)
fi

AC_CHECK_X_HEADER(GL/glut.h, ,AC_MSG_ERROR([set --with-glut-dir=location-to-glut and run configure again]))

])