C++ MsgPack：链接器错误

Question

我正在尝试编译消息包 (http://msgpack.org/) 示例代码并不断收到这些我无法深入了解的错误：

g++ -o"MsgPack2" ./src/MsgPack2.o -lmsgpack -lmsgpackc

./src/MsgPack2.o: In function `main':
/mnt/eoh/workspace/MsgPack2/Debug/../src/MsgPack2.cpp:38:

对msgpack::rpc::server::listen(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned short)' ./src/MsgPack2.o: In functionloop'的未定义引用： /usr/local/include/msgpack/rpc/loop.h:30：未定义的引用 mp::wavy::loop::loop()' ./src/MsgPack2.o: In functionbase': /usr/local/include/msgpack/rpc/server.h:59：未定义的引用 msgpack::rpc::server::server(msgpack::rpc::loop)' /usr/local/include/msgpack/rpc/server.h:59: undefined reference to msgpack::rpc::server::serve(msgpack::rpc::dispatcher*)' /usr/local/include/msgpack/rpc/server.h:59：未定义的引用 msgpack::rpc::server::~server()' ./src/MsgPack2.o: In function~base': /usr/local/include/msgpack/rpc/server.h:64：未定义的引用 msgpack::rpc::server::~server()' ./src/MsgPack2.o: In function myserver::dispatch(msgpack::rpc::request)': /mnt/eoh/workspace/MsgPack2/Debug/../src/MsgPack2.cpp:14： 对msgpack::rpc::request::method()' /mnt/eoh/workspace/MsgPack2/Debug/../src/MsgPack2.cpp:18: undefined reference tomsgpack::rpc::request::params()' 的未定义引用 ./src/MsgPack2.o：在函数中 msgpack::rpc::loop_util<msgpack::rpc::session_pool>::run(unsigned long)': /usr/local/include/msgpack/rpc/loop_util.h:34: undefined reference tomsgpack::rpc::session_pool::get_loop()' /usr/local/include/msgpack/rpc/loop_util.h:34：未定义的引用 到mp::wavy::loop::run(unsigned long)' ./src/MsgPack2.o: In functionvoid msgpack::rpc::request::call(int&, msgpack::type::nil&)': /usr/local/include/msgpack/rpc/request.h:119：未定义的引用 到msgpack::rpc::request::is_sent() const' /usr/local/include/msgpack/rpc/request.h:122: undefined reference tomsgpack::rpc::request::get_msgid() const' /usr/local/include/msgpack/rpc/request.h:125：未定义的引用 给msgpack::rpc::request::send_data(msgpack::sbuffer*)' ./src/MsgPack2.o: In functionvoid msgpack::rpc::request::call(msgpack::type::nil&, unsigned char&)': /usr/local/include/msgpack/rpc/request.h:119：未定义的引用 到msgpack::rpc::request::is_sent() const' /usr/local/include/msgpack/rpc/request.h:122: undefined reference tomsgpack::rpc::request::get_msgid() const' /usr/local/include/msgpack/rpc/request.h:125：未定义的引用 到msgpack::rpc::request::send_data(msgpack::sbuffer*)' ./src/MsgPack2.o: In functionvoid msgpack::rpc::request::call, std::allocator >

(msgpack::type::nil&, std::basic_string, 标准::分配器>&)': /usr/local/include/msgpack/rpc/request.h:119：未定义的引用 到msgpack::rpc::request::is_sent() const' /usr/local/include/msgpack/rpc/request.h:122: undefined reference tomsgpack::rpc::request::get_msgid() const' /usr/local/include/msgpack/rpc/request.h:125：未定义的引用 到msgpack::rpc::request::send_data(msgpack::sbuffer*)' ./src/MsgPack2.o: In function__shared_count'： /usr/include/c++/4.5/tr1/shared_ptr.h:121：未定义的引用 mp::wavy::loop::~loop()' ./src/MsgPack2.o: In function std::tr1::_Sp_deleter::operator()(mp::wavy::loop*) 常量'： /usr/include/c++/4.5/tr1/shared_ptr.h:99：未定义的引用 `mp::wavy::loop::~loop()' collect2: ld 返回 1 个退出状态 make: * [MsgPack2] 错误 1

这里是代码：

#include <msgpack/rpc/server.h>

class myserver : public msgpack::rpc::server::base {
public:
    void add(msgpack::rpc::request req, int a1, int a2)
    {
            req.result(a1 + a2);
    }

public:
    void dispatch(msgpack::rpc::request req)
    try {
            std::string method;
            req.method().convert(&method);

            if(method == "add") {
                    msgpack::type::tuple<int, int> params;
                    req.params().convert(&params);
                    add(req, params.get<0>(), params.get<1>());

            } else {
                    req.error(msgpack::rpc::NO_METHOD_ERROR);
            }

    } catch (msgpack::type_error& e) {
            req.error(msgpack::rpc::ARGUMENT_ERROR);
            return;

    } catch (std::exception& e) {
            req.error(std::string(e.what()));
            return;
    }
};

int main(void)
{
    myserver svr;
    svr.instance.listen("127.0.0.1", 80800);
    svr.instance.run(4);  // run 4 threads

    return 0;
}

如果有人有任何想法，将不胜感激。

非常感谢，

Answer 1

你需要-lmsgpack-rpc。

[旁注：80800 不是有效端口。]