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Linker Error Already Defined In Main.obj

The linker finds out that you have the same symbol defined multiple times in different translation units, and complains about it (it is a violation of the One Definition Rule). If you're unaware of all C++ has to offer, read a good introductory book. Different precision for masses of moon and earth online Players Characters don't meet the fundamental requirements for campaign Why don't we construct a spin 1/4 spinor? N(e(s(t))) a string Why did Fudge and the Weasleys come to the Leaky Cauldron in the PoA? navigate to this website

Just a little change and we're talking physical education How do you get a dragon head in Minecraft? mcgiygas replied Oct 20, 2016 at 1:08 AM USB1.1? You have to have a source file(game.cpp) to define them in and in order to access them from the source file you have to set them as extern in the header I am getting some errors that I don't understand. http://stackoverflow.com/questions/5333374/why-am-i-getting-these-already-defined-linker-errors

asked 4 years ago viewed 14314 times active 6 months ago Visit Chat Related 3Strange MFC / VC++ Linker Error (std::list already defined)0getting a linker error as already defined operator2C++ Custom The code for the header: //#include "tinyxml2.h" #pragma once #include "Camera.h" #include "Controller.h" #include "Lights.h" #include "Mesh.h" namespace ActorFactory { //using namespace tinyxml2; template Actor* createInstance() { return new T; In exactly one .cpp file, define and intialize HELLO at file scope (without the extern modifier).

Specify internal linkage for the functions 1
// send static sf::Packet& operator <<(sf::Packet&packet, const NetworkMessage& data) { // .... } //receive static sf::Packet& operator >>(sf::Packet& packet, NetworkMessage& data) { // .... Is there a difference between u and c in mknod What to do with my out of control pre teen daughter Why don't we construct a spin 1/4 spinor? Changing it to .h solved my problem. share|improve this answer answered Mar 4 at 1:04 DellGuy 112 Thanks.

I changed the name of the file and the linker confusion went away. First C++ divides things up into 'declarations' and 'definitions'. Who is the highest-grossing debut director? When you define the function in the header file, it will be compiled in each cpp file where you include the header.

I think the particular problem you're running into is in this line in main.cpp: #include "VectorDouble.cpp" The problem is that this includes the source file, not the header file. This site is completely free -- paid for by advertisers and donations. As you can see, I'm not double defining/including my class, its included exactly once in main.h. Are you looking for the solution to your computer problem?

Solved: C++ Linker error - "already defined in stdafx.obj" Discussion in 'Software Development' started by andythepandy, Oct 28, 2009. http://stackoverflow.com/questions/29199726/error-link2005-already-defined-in-main-obj Andy andythepandy, Oct 29, 2009 #4 andythepandy Thread Starter Joined: Jul 2, 2006 Messages: 367 I fixed it now. I have read this answer, but it was no help, since it expects double inclusions. If I set the debugger to the visual studio 2010 one I get a whole lot more errors: 101 to be specific.

Subscribed! http://softacoustik.com/linker-error/linker-error-in-c.php in C/C++->Code Generation using Multi-threaded Debug DLL (/MDd). –snowdude Oct 18 '12 at 9:07 add a comment| 5 Answers 5 active oldest votes up vote 2 down vote The most likely Are both main.cpp and hello.cpp added to the project? How is the ATC language structured?

This is true even in VS 2015. I have used: #ifndef GV #define GV ....variables here.... #endif however it is still throwing the same errors as before. I needed to put 'static' in front of each variable. my review here But I'm still not sure why.

contact us Sign in Gallery MSDN Library Forums Get started for free Ask a question Quick access Forums home Browse forums users FAQ Search related threads Remove From My Forums Answered Style Default Style Contact Us Help Home Top RSS Terms and Rules Copyright © TechGuy, Inc. The linker does not know which .obj file to use and throws an error.

This is not a solution to your problem, of course, but it may point to a regression bug in Microsoft's compiler or linker development.

So this puts me in another quandary. Why does Luke ignore Yoda's advice? This will change that line from a definition to a declaration. How to decipher Powershell syntax for text formatting?

no longer function definitions. Uncertainty principle Referee did not fully understand accepted paper Players Characters don't meet the fundamental requirements for campaign Why does Mal change his mind? Browse other questions tagged c++ mfc linker visual-studio-2012 or ask your own question. http://softacoustik.com/linker-error/linker-error-c0-asm.php GIDForums > Computer Programming Forums > C++ Forum LNK2005 Error: Already defined in...

Did you include jolt.h in game.cpp & main.cpp? No ? This is because the declaration results in no code being generated, only the template instantiation results in code generation. Igor Tandetnik Marked as answer by Katie12121212122121 Wednesday, April 03, 2013 12:50 AM Tuesday, April 02, 2013 11:22 PM Reply | Quote 1 Sign in to vote Remove the initialization of

But thats it though. :o –Jens Mar 22 '15 at 21:39 @user3591315: Well, I guess you also have something like Scene.cpp which includes Scene.h. When it is encountered the compiler effectively does a simple textual replacement.