[SDL] what is wrong with this program?

[Alexander Claffey]

I cannot find any syntax problems with this file, but it does not compile.
I have the SDL libraries, and I have compiled other programs that use SDL.  
The errors are:  

In function `main':blitting-surfaces-sdl.c:(.text+0x19): undefined reference to `SDL_Init'
:blitting-surfaces-sdl.c:(.text+0x22): undefined reference to `SDL_GetError'
:blitting-surfaces-sdl.c:(.text+0x45): undefined reference to `SDL_Quit'
:blitting-surfaces-sdl.c:(.text+0x6e): undefined reference to `SDL_SetVideoMode':blitting-surfaces-sdl.c:(.text+0x7c): undefined reference to `SDL_GetError'
:blitting-surfaces-sdl.c:(.text+0xac): undefined reference to `SDL_RWFromFile'
:blitting-surfaces-sdl.c:(.text+0xbc): undefined reference to `SDL_LoadBMP_RW'
:blitting-surfaces-sdl.c:(.text+0x149): undefined reference to `SDL_UpperBlit'
:blitting-surfaces-sdl.c:(.text+0x174): undefined reference to `SDL_UpdateRect'
:blitting-surfaces-sdl.c:(.text+0x180): undefined reference to `SDL_Delay'
:blitting-surfaces-sdl.c:(.text+0x18b): undefined reference to `SDL_FreeSurface'collect2: ld returned 1 exit status

 Also, I have replaced the headers with both 

#include </usr/include/SDL/SDL.h>
#include </usr/include/SDL/SDL_image.h>
#include </usr/include/SDL/SDL_video.h>

and 

#include <stdlib.h>
#if defined(_MSC_VER)
#include "SDL.h"
#else
#include "SDL/SDL.h"
#endif


if the path is wrong, GCC reports that SDL.h is not found; but if it is correct, it does not list any problem finding headers, but still cannot 'use' them.

The program is:
 
 #include <stdio.h>
 #include <stdlib.h>

int main()
{
    SDL_Surface *screen;
    SDL_Surface *image;
    SDL_Rect src, dest;

    if (SDL_Init(SDL_INIT_VIDEO) != 0) {
    printf("Unable to initialize SDL: %s\n", SDL_GetError());
    return 1;
    }

    atexit(SDL_Quit);

    screen = SDL_SetVideoMode(256,256,16,0);
    if(screen == NULL) {
    printf("Unable to set video mode: %s\n", SDL_GetError());
    return 1;
    }

image = SDL_LoadBMP("pygame_icon.bmp");
if(image == NULL) {
printf("Unable to load bitmap.\n");
return 1;
    }

src.x = 0;
src.y = 0;
src.w = image -> w;
src.h = image -> h;

dest.x = 0;
dest.y = 0;
dest.w = image -> w;
dest.h = image -> h;

SDL_BlitSurface(image, &src, screen, &dest);

SDL_UpdateRect(screen, 0, 0, 0, 0);

SDL_Delay(3000);

SDL_FreeSurface(image);

return 0;

}






 			
---------------------------------
See the all-new, redesigned Yahoo.com.  Check it out.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.libsdl.org/pipermail/sdl-libsdl.org/attachments/20060805/3dddb2ca/attachment.htm