linker-errors

问题 I am having trouble compiling/linking the following C code. The linker throws errors that look like the following: pso.o:pso.c:(.text+0x41): undefined reference to '_ps' ... pso.o:pso.c:(.text+0x93): more undefined references to '_ps' follow This is my first time writing C code for gcc, so I'm unsure how to fix this problem. I am assuming that because struct PS is defined my header file, it is somehow not linked to pso.c. However, I did use a #include "ps.h" statement at the top of that

问题 When I try to call OnLoop I get error that it doesn't recognise it. ///Ins_App.h #ifndef INS_APP_H #define INS_APP_H #include <SDL/SDL.h> class Ins_App { private: /* Variables */ bool Running; SDL_Surface* Surf_Display; public: /* inMain */ Ins_App(); int OnExecute(); public: /* Other */ bool OnInit(); void OnEvent(SDL_Event* Event); void OnLoop(); void OnRender(); void OnCleanup(); protected: }; #endif // INS_APP_H ///Ins_App.cpp #include "Ins_App.h" Ins_App::Ins_App() { Running = true; Surf

问题 I am trying to make a game where you need to find the secret number between 1 & 100 and if you don't find it, the program tells you if it's larger or smaller. Here's the code: #include <stdio.h> #include <stdlib.h> #include <time.h> int main ( int argc, char** argv ) { int nombreMystere = 0, nombreEntre = 0; const int MAX = 100, MIN = 1; srand(time(NULL)); nombreMystere = (rand() % (MAX - MIN + 1)) + MIN; do { printf("Quel est le nombre ? "); scanf("%d", &nombreEntre); // On compare le nombre

问题 I have a large project(single exe) having three thousand pas files and almost two thousand dfms. It also contains several resource strings and image lists. This project was working very fine and was enhancing this again and again for several modules as per user requirement. I cannot split this application to multiple exes because of several reasons. My customer is willing to buy that much hardware for supporting it. Now recently i started getting "R link error- too many resources to handle"

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 forum contains many examples of such situation, but in my case static variables are defined correctly, however I still get that error. So this issue is not duplicate of previous and above link does not answer the question. Suggested 21 answers post does not have solution Simon gave me here, please unmark this as "duplicate". Seems I've declared all correctly, check this: .h file: class ValueSetsModelsContainer : public QObject { Q_OBJECT public: static void DLLEXPORT

问题 Okay. So i am using Visual Studios 2010 -> Visual C++ and the .NET Framework (Windows Forms Application) and when i try to hash a string with the hashlib++ i get multiple LNK errors. This is hashlib++ : http://hashlib2plus.sourceforge.net/ This is my code for the hash: //I have more Includes but according to http://hashlib2plus.sourceforge.net/example.html these are the only ones required for hashlib++ so these are the ones i am putting on display. #include <string> #include <iostream>

问题 I went through this post Hiding symbol names in library but still could not get proper conclusion 1) Filename : lib_mylib.h int fun(); int fun1(void); int fun2(void); 2) Filename: lib_mylib.c */ #include <stdio.h> int fun() { return 2; } int fun1(void) { return 2; } int fun2(void) { return 2; } 3) File :my_lib_shared.c #include "my_lib.h" int foo(void) { return fun() + 4; } 4) File: my_lib_shared.h int foo(); 5) File driver.c /* filename: driver.c */ #include "my_lib.h" #include "my_lib

问题 I'm new to OpenCV and I've tried some troubleshooting with trying to get my headers to compile but keep running into Linker Errors. Here is the code I want to run: //Visual Studio #include "stdafx.h" #include <stdio.h> #include <iostream> #include <fstream> #include <vector> #include <math.h> //LabView //#include <NIVision.h> //Opencv #include <opencv/cv.h> #include <opencv/highgui.h> #include "opencv2/opencv.hpp" #include "opencv2/gpu/gpu.hpp" And Here is the Errors I'm getting: 1>------

问题 I have to use the gdLibrary (http://www.libgd.org) in a C++ App on MS Windows XP Prof. SP3 32bit - and I'm trying and googleing for two days now without success. Does anyone of you use libgd with MS VC++ 200x EE? My problem: It has to to compile with MS Visual C++ (e.g. the 2008 Express Edition - fixed 3rd party condition)... but currently the linker crashes, with 11 of the following LNK2019 errors: Linking... codereate.obj : error LNK2019: An undefined external symbol "_gdImageDestroy" was