dnl Copyright (C) 2007-2011  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_BLSURF.m4
dnl  Author : Vadim SANDLER, Open CASCADE S.A.S (vadim.sandler@opencascade.com)
dnl
AC_DEFUN([CHECK_BLSURF],[

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

AC_CHECKING([for BLSURF commercial product])

AC_LANG_SAVE
AC_LANG_C

BLSURF_INCLUDES=""
BLSURF_LIBS=""

AC_ARG_WITH([blsurf],
	    [  --with-blsurf=DIR       root directory path of BLSURF installation])

BLSURF_ok=no

if test "$with_blsurf" != "no" ; then
  if test "$with_blsurf" == "yes" || test "$with_blsurf" == "auto"; then
    BLSURF_HOME=""
  else
    BLSURF_HOME="$with_blsurf"
  fi

  if test "$BLSURF_HOME" == "" ; then
    if test "x$BLSURFHOME" != "x" ; then
      BLSURF_HOME=$BLSURFHOME
    fi
  fi

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

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

    LOCAL_INCLUDES="-I$BLSURF_HOME/include"
    LOCAL_LIBS="-L$BLSURF_HOME/lib -lBLSurf"
    if test $(`which arch`) = x86_64 ; then
      if test -f $BLSURF_HOME/lib/Linux_64/libBLSurf.so ; then
        LOCAL_LIBS="-L$BLSURF_HOME/lib/Linux_64 -lBLSurf -ldistene"
      fi
    fi

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

    AC_MSG_CHECKING([for BLSURF header file])

    AC_CHECK_HEADER([distene/api.h],[BLSURF_ok=yes],[BLSURF_ok=no])

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

      AC_MSG_CHECKING([for BLSURF library])

      LDFLAGS_old="$LDFLAGS"
      LDFLAGS="-L. $LOCAL_LIBS $LDFLAGS"

      AC_TRY_LINK(
	[#include "distene/api.h"],
	[distene_context_new()],
	[BLSURF_ok=yes],[BLSURF_ok=no]
	)

      LDFLAGS="$LDFLAGS_old"

      AC_MSG_RESULT([$BLSURF_ok])
    fi

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

  fi
fi

if test "x$BLSURF_ok" == xno ; then
  AC_MSG_RESULT([for BLSURF: no])
  AC_MSG_WARN([BLSURF includes or libraries are not found or are not properly installed])
  AC_MSG_WARN([Cannot build without BLSURF. Use --with-blsurf option to define BLSURF installation.])
else
  BLSURF_INCLUDES=$LOCAL_INCLUDES
  BLSURF_LIBS=$LOCAL_LIBS
  AC_MSG_RESULT([for BLSURF: yes])
fi

AC_SUBST(BLSURF_INCLUDES)
AC_SUBST(BLSURF_LIBS)

AC_LANG_RESTORE

])dnl