Error LNK2019

[Sm0e]

I recently began creating a tic tac toe program so I could start learning the basics of AI. I copied over some SDL code from a previous program I had made, specifically this:

if(SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO) < 0)
    {
        fprintf(stderr, "Failed to initialize SDL: %s\n", SDL_GetError());
        exit(1);
    }
 
    atexit(SDL_Quit);

	SDL_Surface *screen;
	screen = SDL_SetVideoMode(640, 700, 32, SDL_HWSURFACE);
	if(screen == NULL)
	{
		fprintf(stderr, "Failed to set video mode: %s\n", SDL_GetError());
		exit(1);
	}

	SDL_Event e;
	while(true)
	{
		SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 255, 255, 255));

		while(SDL_PollEvent(&e))
		{
			switch(e.type)
			{
			case SDL_QUIT:
				exit(0);
				break;
			default:
				break;
			}
		}
	}

However, when I try to run it I get 14 errors, all saying that "error LNK2019: unresolved external symbol ""(in one case _SDL_PollEvent) referenced in function "" (in the previously mentioned case, _SDL_main)". What do I need to do in order to get the program to run properly?

[TheMassiveChipmunk]

Did you link SDL to the project?

[zb0S216C]

Have you linked the required SDL libraries?

_Wazzak

[Sm0e]

Yes, I copied the locations of the various SDL libraries directly from a Checkers program (which doesn't get this error) I made a couple weeks back into the VC++ Directories section of References.

[andywestken]

It does sound like you're failing to link in all the required libs. Esp. if all the missing externals are _SDL_... functions.

You mention the locations of the librares. Have you copied over the settings for both

Linker / General / "Additional Library Directories" = <lib directories>

and

Linker / Input / "Additional Dependencies" = <list of lib file names>

If you have, this thread might be worth checking out:
Defeating SDL linker errors in Visual Studio .NET
http://www.gamedev.net/topic/376205-defeating-sdl-linker-errors-in-visual-studio-net/

Andy

[Sm0e]

Thanks, that worked for me.

[andywestken]

So, what was the actual fix?