Undefined reference to 'SDL_main'

Question

I\'ve recently decided to try working with SDL with CodeBlocks 10.05. I started with the tutorial on http://www.sdltutorials.com/sdl-tutorial-basics and did my best to follo

Answer 1

The only plausible reason for your problem I can think of is that when you created the file with main in it, you forgot to add it to build targets.

You should see CApp.cpp in the list where my main.cpp is. Right click on it and click Properties. Click on Build tab in the window that pops up. You should see this:

Click OK, hit Ctrl+F11 (Rebuild).

Good luck.

Answer 2

put these arguments to the main function. I had this problem too, and I fixed it few seconds ago.

int main(int argv, char** args) { }

Answer 3

Try #undef main after all SDL related headers.

Update. This is not a valid solution!

As pointed out by HolyBlackCat, this is a pretty sloppy fix. SDL replaces the main function in order to perform some initialization and/or cleanup that is otherwise not possible, and then calls back to the actual user function.

The interception works by replacing the name of user's main function to SDL_main, with a simple macro

#define main SDL_main

The user's function then ceases to be the entry point for the application, and an entry point provided by SDL is used. The proposed #undef disables the interception recklessly and one should argue that it is not supposed to work at all. For those who successfully compiled and ran an SDL application after this "fix", it must have simply been a platform-dependent coincidence.

The proper solution to the OP's error is making sure that the file containing main gets compiled and linked, and that the function has correct signature. As already posted by others.

Answer 4

Recently, I had this problem, watched some YouTube videos and also followed the installation guide by LazyFoo and I kept getting the "Undefined reference to SDL_main" error.

I followed everything said here after successfully linking the minGw files to my project properties, but it didn't work until I added to my main function int main (int argv, char** args) and voila, it worked.

using namespace std;

int main(int argv, char** args) {    if(SDL_Init(SDL_INIT_VIDEO)<0)    {
       cout<<"Endl Init Failed."<<endl;
       return 1;    }

   cout<<"SDL Init succeeded."<<endl;

   SDL_Quit();    return 0; }

Why it worked is still not clear to me but it worked anyway.

Answer 5

Define SDL_MAIN_HANDLED before you include the SDL libs:

#define SDL_MAIN_HANDLED
#include <GL/glew.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_opengl.h>

More info: I'm using the SDL functions without the SDL_main be defined. Is that fine?