SFGUI / C ++编译问题。错误2019：未解析的外部符号

时间：2014-05-06 20:30:52

标签： c++ visual-studio-2012 cmake sfml nmake

我试图编译SFGUI库 - 它是SFML的GUI。我正在遵循这些说明http://sfgui.sfml-dev.de/p/docs/guide/installing。

首先，我使用CMake生成makefile - 我已将生成器设置为 NMake Makefiles ，然后 Visual Studio 2012 。然后我尝试使用NMake和Visual Studio 2013编译它。两者都产生了如下所示的相同错误。

Error   1   error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::begin(void)const " (__imp_?begin@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ) referenced in function "public: class sf::Vector2<float> __thiscall sfg::Engine::GetTextMetricsA(class sf::String const &,class sf::Font const &,unsigned int)const " (?GetTextMetricsA@Engine@sfg@@QBE?AV?$Vector2@M@sf@@ABVString@4@ABVFont@4@I@Z) C:\Program Files (x86)\CMake 2.8\bin\Engine.obj sfgui
Error   2   error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::begin(void)const " (__imp_?begin@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)  C:\Program Files (x86)\CMake 2.8\bin\Renderer.obj   sfgui
Error   3   error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::begin(void)const " (__imp_?begin@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)  C:\Program Files (x86)\CMake 2.8\bin\Window.cpp.obj sfgui
Error   4   error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::begin(void)const " (__imp_?begin@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)  C:\Program Files (x86)\CMake 2.8\bin\Entry.cpp.obj  sfgui
Error   5   error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::end(void)const " (__imp_?end@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ) referenced in function "public: class sf::Vector2<float> __thiscall sfg::Engine::GetTextMetricsA(class sf::String const &,class sf::Font const &,unsigned int)const " (?GetTextMetricsA@Engine@sfg@@QBE?AV?$Vector2@M@sf@@ABVString@4@ABVFont@4@I@Z) C:\Program Files (x86)\CMake 2.8\bin\Engine.obj sfgui
Error   6   error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::end(void)const " (__imp_?end@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)  C:\Program Files (x86)\CMake 2.8\bin\Renderer.obj   sfgui
Error   7   error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::end(void)const " (__imp_?end@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)  C:\Program Files (x86)\CMake 2.8\bin\Window.cpp.obj sfgui
Error   8   error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_const_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::end(void)const " (__imp_?end@String@sf@@QBE?AV?$_String_const_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)  C:\Program Files (x86)\CMake 2.8\bin\Entry.cpp.obj  sfgui
Error   9   error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::_String_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::begin(void)" (__imp_?begin@String@sf@@QAE?AV?$_String_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ) referenced in function "private: unsigned int __thiscall sfg::Entry::GetPositionFromMouseX(int)" (?GetPositionFromMouseX@Entry@sfg@@AAEIH@Z)   C:\Program Files (x86)\CMake 2.8\bin\Entry.cpp.obj  sfgui
Error   10  error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::begin(void)" (__imp_?begin@String@sf@@QAE?AV?$_String_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)    C:\Program Files (x86)\CMake 2.8\bin\Label.cpp.obj  sfgui
Error   11  error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::_String_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::end(void)" (__imp_?end@String@sf@@QAE?AV?$_String_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ) referenced in function "private: unsigned int __thiscall sfg::Entry::GetPositionFromMouseX(int)" (?GetPositionFromMouseX@Entry@sfg@@AAEIH@Z)   C:\Program Files (x86)\CMake 2.8\bin\Entry.cpp.obj  sfgui
Error   12  error LNK2001: unresolved external symbol "__declspec(dllimport) public: class std::_String_iterator<class std::_String_val<struct std::_Simple_types<unsigned int> > > __thiscall sf::String::end(void)" (__imp_?end@String@sf@@QAE?AV?$_String_iterator@V?$_String_val@U?$_Simple_types@I@std@@@std@@@std@@XZ)    C:\Program Files (x86)\CMake 2.8\bin\Label.cpp.obj  sfgui
Error   13  error LNK1120: 4 unresolved externals   C:\Program Files (x86)\CMake 2.8\bin\Debug\sfgui-d.dll  sfgui

你知道怎么解决吗？我在互联网上搜索答案，但它没有帮助我。它是库，而不是我的项目，所以我不应该更改代码。

1 个答案:

答案 0 :(得分：0)

此类sf::String不是由 SFGUI 本身提供，而是由底层的跨平台库 SFML 提供。好像它的库没有正确地包含在构建中。

确保在CMake运行期间找到正确的 SFML ，检查其.lib二进制文件是否在正确的位置（而不仅仅是包含）生成，查看运行时是否指定了这些库{{ 1}}在link.exe等的输出中。还要重新检查 SFML 之前是否已正确构建，检查其中是否有可能的安装步骤等等。

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