Full error message


/MyFolder/main.o:: In function 'main':

/MyFolder/main.cpp:7: error: undefined reference to 'SDL_Init'

/MyFolder/main.cpp:9: error: undefined reference to 'SDL_GetError'

/MyFolder/main.cpp:12: error: undefined reference to 'SDL_Quit'

:: error: collect2: ld returned 1 exit status

Cause

IDE: Qt Creator 2.0.0

Project type: Qt4 Console Application

Selected required modules: QtCore

Compiler: G++ 4.4.1

Additional libraries: SDL

The following source code was used, from the SDL tutorial:


#include <cstdlib>

#include <iostream>

#include <SDL/SDL.h>



int main()

{

  if ( SDL_Init(SDL_INIT_AUDIO | SDL_INIT_VIDEO) < 0 )

  {

    std::cerr << "Unable to init SDL: " << SDL_GetError() << '\n';

    return 1;

  }

  std::atexit(SDL_Quit);

}

The following project file was used:


#-------------------------------------------------

#

# Project created by QtCreator 2010-07-17T14:57:33

#

#-------------------------------------------------



QT       += core



QT       -= gui



TARGET = TestSdl

CONFIG   += console

CONFIG   -= app_bundle



TEMPLATE = app



SOURCES += main.cpp

Solution

You need to link against the SDL library. Add the following line to your project file:


LIBS += -L/usr/local/lib -lSDL

Go back to Richel Bilderbeek's C++ page.

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(C++) undefined reference to 'SDL_Init'

Full error message

Cause

Solution