unresolved-external

问题 I want to use GLUT to simplify my code and work. I'm using windows 7 (64 bit) and Visual Studio 2010. I did everything like in this tutorial and still can't compile my code... I get these errors: Error 2 error LNK1120: 1 unresolved externals <path> Error 1 error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartuL The code I use: #include <GL/glew.h> #include <GL/glut.h> void display (void) { glClearColor(1.0f, 0.0f, 0.0f, 1.0f); glClear(GL_COLOR_BUFFER

问题 Environment: Windows XP. Visual Studios 2010. Language - C++. I have run into the following link error & have run out of ideas how to fix this problem. I have a project (CnD Device) which links to 2 projects (Messages & Carbon) controlled by my group. I have tried to search for project properties between the 3 projects enter tcp_driver.obj : error LNK2019: unresolved external symbol "class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl toString(int)"

问题 Environment: Windows XP. Visual Studios 2010. Language - C++. I have run into the following link error & have run out of ideas how to fix this problem. I have a project (CnD Device) which links to 2 projects (Messages & Carbon) controlled by my group. I have tried to search for project properties between the 3 projects enter tcp_driver.obj : error LNK2019: unresolved external symbol "class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl toString(int)"

问题 I downloaded Crypto++ 5.62 and built it with default project settings. In my project I set up the path to cryptopp.lib and defined its name in "Additional Dependencies". Both Crypto++ and my project - VS 2008. During building of my project I get: main.obj : error LNK2001: unresolved external symbol "class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const CryptoPP::DEFAULT_CHANNEL" (?DEFAULT_CHANNEL@CryptoPP@@3V?$basic_string@DU?$char_traits@D@std@@V?

问题 What are undefined reference/unresolved external symbol errors? What are common causes and how to fix/prevent them? Feel free to edit/add your own. 回答1: Compiling a C++ program takes place in several steps, as specified by 2.2 (credits to Keith Thompson for the reference): The precedence among the syntax rules of translation is specified by the following phases [see footnote] . Physical source file characters are mapped, in an implementation-defined manner, to the basic source character set

问题 This question already has answers here : What is an undefined reference/unresolved external symbol error and how do I fix it? (32 answers) Closed 4 years ago . I have read the model answer on unresolved externals and found it to be incredibly useful and have got it down to just these last two stubborn errors which are beyond me. I've attached all the code just in case, if you would like to see the headers or anything else please say. // Stokes theory calculations #include <math.h> #include

问题 error LNK2001: unresolved external symbol "public: virtual void __cdecl pcl::visualization::PCLVisualizer::FPSCallback::Execute(class vtkObject *,unsigned long,void *)" (?Execute@FPSCallback@PCLVisualizer@visualization@pcl@@UEAAXPEAVvtkObject@@KPEAX@Z) 1>C:\Users\hatea\Documents\Visual Studio 2015\Projects\PCLTester\x64\Debug\PCLTester.dll : fatal error LNK1120: 1 unresolved externals I have thoroughly exhausted all avenues dealing with this issue. I checked here, and I found a similar

问题 Finally I compiled it. Main mistake was about VS enviromental variables. To compile and link proper I needed to type %VisualStudoFolder%\VC\vcvarsall.bat amd64 nmake -f makefile Default LuaJava distributions provides only 32-bit binaries. Obviously using them with 64-bit VM\OS causes exception. Also I can't just change Lua binaries to 64-bit, because this causes Exception in thread "main" java.lang.UnsatisfiedLinkError: org.keplerproject.luajava.LuaState._open()Lorg/keplerproject/luajava/CPtr

问题 I'm getting the following error when I compile my program which links to libtorrent.lib. I've tried compiling libtorrent with different settings, I've tried enabling/disabling DHT, deprecated functions, etc. error LNK2019: unresolved external symbol "void __cdecl libtorrent::rel_performancetimer_pools_nolog_resolvecountries_deprecated_dht_ext_(void)" Is anyone here familiar with libtorrent, or can anyone provide any advice for getting rid of this error? I don't see any other libraries that I

问题 I am trying to link C++ and Python with Boost.Python. I have Visual Studio 2012 Express Version, Python 2.7, and Boost 1.54. I followed the instructions of Boost official website to install Boost on my machine, which means I followed these steps: I download the prebuilt binary and install it at C:\local\boost_1_54\ . I run bjam b2 --build-dir=C:\local\boost_1_54 toolset=msvc11.0 --build-type=complete stage . Then I had such operations in property panel: Add C:\local\boost_1_54\; C:\Python27