后面查了这种问题,应该是缺少库文件的原因。将提示的error LNK2001: unresolved external symbol "__declspec(dllimport) class...,错误所在的函数库lib文件,添加进来,并加入到工程中。编译一下,OK。问题就解决了。
编译单元不匹配:例如,在一个编译单元中使用了__declspec(dllexport)导出符号,但在另一个编译单元中却使用了__declspec(dllimport)导入符号,导致链接错误。 3. 解决“unresolved external symbol”错误的步骤 检查符号声明与定义: 确保所有声明的符号都有对应的定义。 检查头文件和源文件是否匹配,确保没有遗漏的实现。
Google glog error LNK2001: unresolved external symbol "__declspec(dllimport) int fLI::FLAGS_XXXX 错误的解决。 想在windows 下使用 glog,使用类似 FLAGS_max_log_size 来设置参数,结果编译报错。 解决办法是在 项目属性 -> C/C++ -> Preprocessor -> Preprocessor Definitions 加入 GOOGLE_GLOG_DLL_DECL=。
// error LNK2001: unresolved external symbol "private: static class Singleton * Singleton::ptrInstance" (?ptrInstance@Singleton@@0PEAV1@EA) Singleton*Singleton::ptrInstance=NULL; __declspec(dllimport)intTest(); intmain() { std::cout<<Test()<<std::endl; Singleton*obj1=Singleton::getInstance...
缺少 .lib 链接库文件 在工程属性里把lib文件加进来就行了
error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall std::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> >::basic_string<wchar_t,struct std::char_traits<wchar_t>,class std::allocator<wchar_t> >(struct std::basic_string...
error LNK2001: unresolved external symbol "public: static void __cdecl mlpack::Timer::Start(class std::basic_string<char,struct std::char_traits,class std::allocator > const &)" (?Start@Timer@mlpack@@SAXAEBV?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@@z) : error...
1>--- Rebuild All started: Project: Project2, Configuration: Debug Win32 --- 1>stdafx.cpp 1>Project2.cpp 1>Source.cpp 1>Generating Code... 1>Source.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) class std::b...
1>Game.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall sf::String::String(char const *,class std::locale const &)" (__imp_??0String@sf@@QAE@PBDABVlocale@std@@@Z) referenced in function "public: static void __cdecl Game::Start(void)" (?
error LNK2019: unresolved external symbol "__declspec(dllimport) unsigned long __cdecl ias::IASListReadersW(void *,wchar_t *,unsigned long *)" So what is ias::IASListReaders ? Since you didn't get any compile errors (apparently), the calls you're making in your code must match signatu...