dnl Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
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

AC_DEFUN([CHECK_FVM],[

AC_CHECKING(for FVM Library)

AC_LANG_SAVE
AC_LANG(C++)

FVM_INCLUDES=""
FVM_LIBSUFFIX=""
FVM_LIBS=""
ENABLE_FVM="no"

AC_CHECKING(for FVM location)
AC_ARG_WITH(fvm,
            [  --with-fvm=DIR      root directory path to FVM library installation ],
            [FVMDIR="$withval"
             AC_MSG_RESULT("select $withval as path to FVM library")])

AC_MSG_RESULT(\$FVMDIR = ${FVMDIR})

CPPFLAGS_old="${CPPFLAGS}"
LIBS_old=$LIBS

if test "x${FVMDIR}" != "x" ; then
  
  CHECK_BFT
  fvm_ok=no



  if test "x${bft_ok}" = "xyes"; then
      fvm_headers_ok=no
      fvm_binaries_ok=no
      FVM_INCLUDES="-I${FVMDIR}/include"
      FVM_LIBS="-L${FVMDIR}/lib -lfvm ${BFT_LIBS} ${MPI_LIBS}"


    dnl FVM headers
      AC_CHECKING(for FVM headers)
      CPPFLAGS="${CPPFLAGS_old} ${FVM_INCLUDES} ${MPI_CPPFLAGS} ${MED_CPPFLAGS}"

      fvm_include_dir_ok=yes
      if test "x${FVMDIR}" != "x" ; then
	AC_CHECK_FILE(${FVMDIR}/include/fvm_nodal.h,
		      fvm_include_dir_ok=yes,
		      fvm_include_dir_ok=no)
      fi

      if test "x${fvm_include_dir_ok}" = "xyes" ; then
	AC_TRY_COMPILE([#include <iostream>
		      #include "fvm_nodal.h"],
		       [fvm_nodal_create("",2)],
		       fvm_headers_ok=yes,
		       fvm_headers_ok=no)
      fi

      if test "x${fvm_headers_ok}" = "xno" ; then
	FVM_INCLUDES="FVM_INCLUDES_NOT_DEFINED"
      else
	AC_MSG_RESULT(\$FVM_INCLUDES = ${FVM_INCLUDES})
      fi
      AC_MSG_RESULT(for fvm headers: $fvm_headers_ok)

      if test "x${fvm_headers_ok}" = "xyes" ; then
	dnl FVM binaries
	AC_CHECKING(for FVM binaries)
	fvm_lib_dir_ok=yes
	if test "x${FVMDIR}" != "x" ; then
	  AC_CHECK_FILE(${FVMDIR}/lib/libfvm.so,
			fvm_lib_dir_ok=yes,
			fvm_lib_dir_ok=no)
	fi

      fi

      CPPFLAGS="${CPPFLAGS_old}"
      LIBS="${LIBS_old}"

      if test "x${fvm_headers_ok}" = "xyes" ; then
	if test "x${fvm_lib_dir_ok}" = "xyes" ; then
	  fvm_ok=yes
	  ENABLE_FVM="yes"
	fi
      fi

     
      AC_SUBST(FVM_INCLUDES)
      AC_SUBST(FVM_LIBSUFFIX)
      AC_SUBST(FVM_LIBS)
			AC_SUBST(ENABLE_FVM)
  fi
  AC_MSG_RESULT(for fvm: $fvm_ok)

fi

AC_LANG_RESTORE

])dnl