lnk2005

Re-definitions of functions while including files in C++ (error LNK2005)

我的梦境 提交于 2021-02-05 08:28:07
问题 I'm new to C++ and I have a basic doubt. I'm creating a french verb conjugating application. I have two files, a Conjugator.cpp file and an ErVerbs.cpp file. I want to keep the bulk of my functions in the ErVerbs source file and use the conjugator file to use these functions. Here are a few code snippets: Conjugator.cpp #include <iostream> #include <string> #include "Variables.h" #include "ErVerbs.cpp" #include "IrVerbs.cpp" #include "ReVerbs.cpp" using namespace std; void check() { if (verb

Including the Boost filesystem header

本小妞迷上赌 提交于 2020-01-06 14:01:09
问题 I have a big project. In N.cpp I need to use boost::filesystem::exists(path) to check if the path is valid. For that, I include <boost/filesystem.hpp> I get the following error: Error 2 error LNK2005: "public: enum boost::filesystem::file_type __cdecl boost::filesystem::file_status::type(void)const " (?type@file_status@filesystem@boost@@QEBA?AW4file_type@23@XZ) already defined in N.obj D:\MProject\DA\boost_filesystem-vc100-mt-gd-1_53.lib(boost_filesystem-vc100-mt-gd-1_53.dll) DA Error 1 error

Including the Boost filesystem header

℡╲_俬逩灬. 提交于 2020-01-06 14:01:04
问题 I have a big project. In N.cpp I need to use boost::filesystem::exists(path) to check if the path is valid. For that, I include <boost/filesystem.hpp> I get the following error: Error 2 error LNK2005: "public: enum boost::filesystem::file_type __cdecl boost::filesystem::file_status::type(void)const " (?type@file_status@filesystem@boost@@QEBA?AW4file_type@23@XZ) already defined in N.obj D:\MProject\DA\boost_filesystem-vc100-mt-gd-1_53.lib(boost_filesystem-vc100-mt-gd-1_53.dll) DA Error 1 error

MSVC DLL exporting class that inherits from template cause LNK2005 already defined error

狂风中的少年 提交于 2019-12-21 20:08:39
问题 I've been tracking an error in a huge project for 3 days and finally get a minimum reproducable example. I want to share this problem and ask some questions on the weird behavior of Visual Studio. When you export a class that inherits from a instantiated template class , like class __declspec(dllexport) classA : public Template<double>{} MSVC will also export the instantiated template class Template<double> in DLL. If the consumer include "template.h" in his code then instantiate a Template

LNK2005 Error linking static openCV libraries with Visual Studio and QT Creator

假装没事ソ 提交于 2019-12-19 19:03:39
问题 I built the static openCV 2.3 libraries. My project currently uses the dynamic ones with no problem, but now I want to use static libs. I added the libs to my .pro file: LIBS += "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv_calib3d231.lib" \ "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv_contrib231.lib" \ "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv_core231.lib" \ "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv

LNK2005 Error linking static openCV libraries with Visual Studio and QT Creator

…衆ロ難τιáo~ 提交于 2019-12-19 19:01:13
问题 I built the static openCV 2.3 libraries. My project currently uses the dynamic ones with no problem, but now I want to use static libs. I added the libs to my .pro file: LIBS += "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv_calib3d231.lib" \ "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv_contrib231.lib" \ "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv_core231.lib" \ "C:\Program Files\openCV_VS_static\opencv\build\lib\Release\opencv

Link error when declaring public static variables in C++

回眸只為那壹抹淺笑 提交于 2019-12-18 15:54:56
问题 I have this class with variable configuration parameters. I want to include it in other classes: JugadorHumano , JugadorIA , Main , PartidaClasica , PartidaMision . #pragma once class Configuracion { public: static int MAX_ATAQUES; static int DIV_TERRITORIOS; }; int Configuracion::MAX_ATAQUES = 5; int Configuracion::DIV_TERRITORIOS = 3; What I want is to be able to modify or read the values from the other classes. I can't declare a static variable and define it in the declaration. I can't let

VS 2010 C++ LNK2005 errors while using #pragma once and #ifndef

懵懂的女人 提交于 2019-12-13 15:01:19
问题 1>Deck.obj : error LNK2005: "class Card card" (?card@@3VCard@@A) already defined in Card.obj 1>PokerTester.obj : error LNK2005: "class Card card" (?card@@3VCard@@A) already defined in Card.obj 1>PokerTester.obj : error LNK2005: "class Deck deck" (?deck@@3VDeck@@A) already defined in Deck.obj 1>C:\Dev\Poker\Debug\Poker.exe : fatal error LNK1169: one or more multiply defined symbols found I've learned why these errors occur by googling, but I don't know why they're still happening when I've

Error: Class computer comp is already defined in computer.obj

不想你离开。 提交于 2019-12-13 05:00:27
问题 I am currently playing with C++, and attempting to rebuild a Tic Tac Toe batch console game I made in C++, but have hit a wall, where I cannot figure out how to get rid of the error TicTacToe.obj : error LNK2005: "class computer comp" (?comp@@3Vcomputer@@A) already defined in computer.obj . I have tried removing the declaration of the function computer from the header, and the definition of the function in the C++, but that didn't fix the error. The only way I figured out how to remove this

LNK2005, LNK1169 errors, “int __cdecl g(void)” (?g@@YAHXZ) already defined

可紊 提交于 2019-12-11 18:52:40
问题 I have 3 files in a Visual Studio project: test.cpp , date.cpp and main.cpp - test.cpp: int g() { return 0; } date.cpp: /*totally empty*/ main.cpp: #include "test.cpp" #include "date.cpp" int main() { return g(); } I understand that defining functions in a header file leads to violation of One-Definition Rule if header file is called multiple times. But here, I am calling it only once from only one file/translation unit. Why is it still throwing LNK2005? 回答1: You are including "test.cpp" in