AC_DEFUN([CHECK_FILTOO],[

filtoo_ok=no

AC_CHECK_PROG(FILTOO, filtoo,yes,no)

if test "x$FILTOO" == xno ; then
  AC_MSG_WARN(filtoo program not found in PATH variable)
else
  AC_CHECK_PROG(FILGHS3D, filghs3d,yes,no)

  if test "x$FILGHS3D" == xno ; then
    AC_MSG_WARN(filghs3d program not found in PATH variable)
  else
    AC_CHECK_PROG(FILYAMS, filyams,yes,no)

    if test "x$FILYAMS" == xno ; then
      AC_MSG_WARN(filyams program not found in PATH variable)
    else
      filtoo_ok=yes
   fi
 fi
fi

AC_MSG_RESULT(for filtoo: $filtoo_ok)

])dnl