dnl Copyright (C) 2007-2012  CEA/DEN, EDF R&D
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.salome-platform.org/ or email : webmaster.salome@opencascade.com
dnl

dnl  File   : check_MESHGEMS_CADSURF.m4
dnl  Author : Gilles DAVID, Open CASCADE S.A.S (gilles.david@opencascade.com)
dnl
AC_DEFUN([CHECK_MESHGEMS_CADSURF],[

AC_REQUIRE([AC_PROG_CXX])dnl
AC_REQUIRE([AC_PROG_CXXCPP])dnl

AC_CHECKING([for MeshGems-CADSurf commercial product])

AC_LANG_SAVE
AC_LANG_CPLUSPLUS

MESHGEMS_CADSURF_INCLUDES=""
MESHGEMS_CADSURF_LIBS=""

AC_ARG_WITH([meshgems],
	    [  --with_meshgems=DIR       root directory path of MeshGems-CADSurf installation])

CADSURF_ok=no

if test "$with_meshgems" != "no" ; then
  if test "$with_meshgems" == "yes" || test "$with_meshgems" == "auto"; then
    MESHGEMS_CADSURF_HOME=""
  else
    MESHGEMS_CADSURF_HOME="$with_meshgems"
  fi

  if test "$MESHGEMS_CADSURF_HOME" == "" ; then
    if test "x$MESHGEMS_CADSURFHOME" != "x" ; then
      MESHGEMS_CADSURF_HOME=$MESHGEMS_CADSURFHOME
    fi
    if test "x$CADSURFHOME" != "x" ; then
      MESHGEMS_CADSURF_HOME=$CADSURFHOME
    fi
    if test "x$MESHGEMSHOME" != "x" ; then
      MESHGEMS_CADSURF_HOME=$MESHGEMSHOME
    fi
  fi

  if test "x$MESHGEMS_CADSURF_HOME" != "x"; then

    echo
    echo -------------------------------------------------
    echo You are about to choose to use somehow the
    echo MeshGems-CADSurf commercial product to generate 2D mesh.
    echo

    LOCAL_INCLUDES="-I$MESHGEMS_CADSURF_HOME/include"
    LOCAL_LIBS="-L$MESHGEMS_CADSURF_HOME/lib/Linux"
    archtest="$(`which arch`)"
    if test "x$archtest" = "x" ; then
      archtest="`uname -m`"
    fi
    if test $archtest = "x86_64" ; then
        LOCAL_LIBS="-L$MESHGEMS_CADSURF_HOME/lib/Linux_64"
    fi
    LOCAL_LIBS="${LOCAL_LIBS} -lmeshgems -lmg-cadsurf -lmg-precad"

    CPPFLAGS_old="$CPPFLAGS"
    CXXFLAGS_old="$CXXFLAGS"
    CPPFLAGS="$LOCAL_INCLUDES $CPPFLAGS"
    CXXFLAGS="$LOCAL_INCLUDES $CXXFLAGS"

    AC_MSG_CHECKING([for MeshGems-CADSurf header file])

    AC_CHECK_HEADER([meshgems/meshgems.h],[CADSURF_ok=yes],[CADSURF_ok=no])
    AC_CHECK_HEADER([meshgems/cadsurf.h],[CADSURF_ok=yes],[CADSURF_ok=no])

    if test "x$CADSURF_ok" == "xyes"; then

      AC_MSG_CHECKING([for MeshGems-CADSurf library])

      LIBS_old="$LIBS"
      LIBS="-L. $LOCAL_LIBS $LIBS"

      AC_TRY_LINK(
extern "C" {
#include "meshgems/meshgems.h"
},  context_new(),
	CADSURF_ok=yes,CADSURF_ok=no
	)

      LIBS="$LIBS_old"

      AC_MSG_RESULT([$CADSURF_ok])
    fi

    CPPFLAGS="$CPPFLAGS_old"
    CXXFLAGS="$CXXFLAGS_old"

  fi
fi

if test "x$CADSURF_ok" == xno ; then
  AC_MSG_RESULT([for MeshGems-CADSurf: no])
  AC_MSG_WARN([MeshGems-CADSurf includes or libraries are not found or are not properly installed])
  AC_MSG_WARN([Cannot build without MeshGems-CADSurf. Use --with_meshgems option to define MeshGems installation.])
else
  MESHGEMS_CADSURF_INCLUDES=$LOCAL_INCLUDES
  MESHGEMS_CADSURF_LIBS=$LOCAL_LIBS
  AC_MSG_RESULT([for MeshGems-CADSurf: yes])
fi

AC_SUBST(MESHGEMS_CADSURF_INCLUDES)
AC_SUBST(MESHGEMS_CADSURF_LIBS)

AC_LANG_RESTORE

])dnl