dnl  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
dnl  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS 
dnl 
dnl  This library is free software; you can redistribute it and/or 
dnl  modify it under the terms of the GNU Lesser General Public 
dnl  License as published by the Free Software Foundation; either 
dnl  version 2.1 of the License. 
dnl 
dnl  This library is distributed in the hope that it will be useful, 
dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of 
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
dnl  Lesser General Public License for more details. 
dnl 
dnl  You should have received a copy of the GNU Lesser General Public 
dnl  License along with this library; if not, write to the Free Software 
dnl  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA 
dnl 
dnl  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org 
dnl
dnl
dnl

AC_DEFUN([CHECK_GDLIB],[
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl

AC_CHECKING(for gd library)

gd_ok=no

dnl check gd.h header
AC_CHECK_HEADER(gd.h, gd_ok=yes, gd_ok=no)

if test "x$gd_ok" = "xyes"; then
  dnl check gd library
  AC_MSG_CHECKING(linking with libgd.so)
  LIBS_old=$LIBS
  LIBS="$LIBS -lgd"
  AC_TRY_LINK([#include <gd.h>],
              [gdImagePtr image = gdImageCreate(10,10);],
              gd_ok=yes,
              gd_ok=no)
  LIBS=$LIBS_old
  AC_MSG_RESULT(done)
fi

if test "x$gd_ok" = "xno"; then
  AC_MSG_WARN(gd library is not installed!)
fi

AC_MSG_RESULT(for gd: $gd_ok)

])dnl