Question

今天我添加了一个管理MySQL服务器连接的类。它将是多线程的，所以我想使用mysql ++。我下载了最新版本并在调试模式下编译，没有任何错误。一旦我将已编译的mysqlpp_d.lib添加到我的解决方案中，当然还有其他要求（mysql 5.0 include和lib），我得到了一些链接器错误。

Error    17    error LNK1169: one or more multiply defined symbols found    C:\Users\root\Documents\Visual Studio 2010\Projects\C++\xxxx\binaries\xxxx.exe    1    1    xxxxx 
Error    16    error LNK2005: "public: __thiscall std::basic_ostringstream<char,struct std::char_traits<char>,class std::allocator<char> >::basic_ostringstream<char,struct std::char_traits<char>,class std::allocator<char> >(int)" (??0?$basic_ostringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@H@Z) already defined in xxxxxx.obj    C:\Users\root\Documents\Visual Studio 2010\Projects\C++\xxxx\trunk\vc10\xxxxx\mysqlpp_d.lib(mysqlpp_d.dll)    xxxxxxx 
Error    15    error LNK2005: "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall std::basic_ostringstream<char,struct std::char_traits<char>,class std::allocator<char> >::str(void)const " (?str@?$basic_ostringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ) already defined in client_context.obj    C:\Users\root\Documents\Visual Studio 2010\Projects\C++\xxx\trunk\vc10\xxx\mysqlpp_d.lib(mysqlpp_d.dll)    xxxxx 
Error    14    error LNK2005: "public: void __thiscall std::basic_ostringstream<char,struct std::char_traits<char>,class std::allocator<char> >::`vbase destructor'(void)" (??_D?$basic_ostringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ) already defined in xxxxx.obj    C:\Users\root\Documents\Visual Studio 2010\Projects\C++\xxx\trunk\vc10\xxxx\mysqlpp_d.lib(mysqlpp_d.dll)    xxx

这些错误是否有解决方案？

BTW：我编译了整个mysql ++ libary而没有改变任何编译配置。

Answer 1

在项目属性中定义MYSQLPP_NO_DLL-＆gt; C / C ++ /预处理器

Answer 2

尝试在项目选项中设置/ NODEFAULTLIB参数 - ＆gt;链接器/输入

连接mysqlpp_d.lib的多个问题

2 个答案: