namespace boost {
  namespace call_stack {
    typedef extended_symbol_resolver default_symbol_resolver;
    typedef fancy_symbol_formatter default_symbol_formatter;
    typedef fancy_call_frame_formatter default_call_frame_formatter;
    typedef call_stack< default_max_depth > default_stack;
    typedef call_stack_info< default_stack, default_symbol_resolver, default_call_frame_formatter > default_call_stack_info;

    static const std::size_t default_max_depth;
    bool init();
    bool shutdown();
  }
}