Cannot compile SDL apps

godice · 05-22-2005, 04:27 AM

after creating a simple SDL Application for learning purposes.
GCC wouldn't let me away with this.
it gave me a bunch of compiler errors.

here is my simple SDL source code:

Code:

#include<SDL/SDL.h>
#include<stdio.h>
#include<stdlib.h>

int main()
{
	SDL_Surface *screen;

	/* Initiliaze SDL's Video system and check for errors. */
	if (SDL_Init(SDL_INIT_VIDEO) != 0) {
		printf("Unable to initialize SDL: %s\n", SDL_GetError());
		return 1;
	}

	/* Make sure that SDL exits when the program exits.*/

	atexit(SDL_Quit);

	/* attempt to make a 640 X 480 hiColor Mode. */
	screen = SDL_SetVideoMode(640, 480, 16, SDL_FULLSCREEN);
	if (screen == NULL) {
		printf("Unable to set video mode: %s\n", SDL_GetError());
		return 1;
	}

	/* als alles is gelukt */
	printf("SDL has bin successfully loaded.\n");

}

And this is how I tried to compile the code:
gcc main.c -o gametest -I/usr/include/SDL -D_REENTRANT -L/usr/lib -Wl,-rpath,/usr/lib -lSDL -lpthread

I also tried this:
gcc main.c -lSDL -o test

And this:
gcc main.c -o gametest `sdl-config --cflags --libs`

and nothing worked.
I keep getting these errors:

......
..........
(a view other thousand error messages here...)
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x122c): In function `SDL_XDGAGetViewportStatus':
: undefined reference to `_XFlush'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x12e3): In function `SDL_XDGASync':
: undefined reference to `_XReply'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1320): In function `SDL_XDGASync':
: undefined reference to `XMissingExtension'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1344): In function `SDL_XDGASync':
: undefined reference to `_XFlush'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x140b): In function `SDL_XDGAChangePixmapMode':
: undefined reference to `_XReply'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1454): In function `SDL_XDGAChangePixmapMode':
: undefined reference to `XMissingExtension'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1474): In function `SDL_XDGAChangePixmapMode':
: undefined reference to `_XFlush'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1560): In function `SDL_XDGACreateColormap':
: undefined reference to `XMissingExtension'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x158c): In function `SDL_XDGACreateColormap':
: undefined reference to `_XFlush'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x16f2): In function `SDL_XDGACloseFramebuffer':
: undefined reference to `XMissingExtension'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1775): In function `SDL_XDGACloseFramebuffer':
: undefined reference to `_XFlush'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x199a): In function `SDL_XDGAOpenFramebuffer':
: undefined reference to `_XReply'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x19e0): In function `SDL_XDGAOpenFramebuffer':
: undefined reference to `XMissingExtension'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1a72): In function `SDL_XDGAOpenFramebuffer':
: undefined reference to `_XRead'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA2.o)(.text+0x1a94): In function `SDL_XDGAOpenFramebuffer':
: undefined reference to `_XFlush'
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../libSDL.a(XF86DGA.o)(.text+0x114): In function `SDL_XF86DGAGetVideoLL':
..............
(and here)

This is probably a linkingphase error.
but how to fix it?
Is there a library I'm missing?

godice · 05-22-2005, 08:18 AM

ok, nevermind..
I fixed the the problem, Suse gave me an evil SDL Library, so I just reinstalled it.
thanks to the people that were planning to help me.

Cyborg16 · 05-22-2005, 08:34 AM

Some things work wierdly - I had a linker error with SDL and OpenGL, which I resolved by linking the GLU library (GL was linked before). And the errors were for standard GL functions, when no GLU functions were used (not by me anyway - I don't know if SDL uses them for window initialisation). Anyone know why?? (I'm also pretty sure it used to compile and link without, maybe an upgrade caused it).