Problem when compiling with SDL on Nvidia/Nforce...

superconti · 09-12-02, 09:14 PM

Hi,
The nvdia drivers are well installed on my machine, i can run glxinfo, glxgears and everything is fine, the problem is when i try to compile an application using SDL and Opengl (i am using Kdevelop), so i have added -lGL-lGLU -lSDL -lpthread (linker option) in order to the source to compile and link, no problem, but when i run the exe, i got the windows opened but no Opengl rendering functions seem to work, i just got a screen full of garbage (probably some video data from precendent application).

What's wrong ? Is that possible that some lib are not the right ones to link with ?

I am stuck, help.

P.S. i have attached the small source i do use for test

superconti · 09-12-02, 11:03 PM

Wanted to add that :
when i do link with -lSDL, ldd does not show any reference to /usr/lib/libGL.so.1 and /usr/lib/libGLcore.so.1 as it should be (on Nvidia) ????
if i don't link with -lSDL then the linker will use that libraries, of course SDL is not use.
So i do suspect -lSDL to link with a kind of "static" wrong opengl lib at the link time, but i am just guessing.....

Does anyone have the same problem ?

Help is needed.

Thanks

MacSlow · 09-12-02, 11:49 PM

Hm... did you compile the SDL library you're using yourself (after you installed the nvidia-driver) or do you use a precompiled binary distribution of SDL?

Best regards...

MacSlow

superconti · 09-13-02, 12:25 AM

Well, it came from a distribution redhat 7.3, but i found out the problem, i had to rename/delete some libgl and libglcore.a, then i ran again sdl-config --lib and i got new flags, now it does work.
So, some conflict between Nvidia Opengl and Mesa Opengl.

Thanks for answering.

09-12-02, 09:14 PM	#1
superconti Registered User Join Date: Sep 2002 Posts: 5	Problem when compiling with SDL on Nvidia/Nforce... Hi, The nvdia drivers are well installed on my machine, i can run glxinfo, glxgears and everything is fine, the problem is when i try to compile an application using SDL and Opengl (i am using Kdevelop), so i have added -lGL-lGLU -lSDL -lpthread (linker option) in order to the source to compile and link, no problem, but when i run the exe, i got the windows opened but no Opengl rendering functions seem to work, i just got a screen full of garbage (probably some video data from precendent application). What's wrong ? Is that possible that some lib are not the right ones to link with ? I am stuck, help. P.S. i have attached the small source i do use for test

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09-12-02, 11:03 PM	#2
superconti Registered User Join Date: Sep 2002 Posts: 5	Wanted to add that : when i do link with -lSDL, ldd does not show any reference to /usr/lib/libGL.so.1 and /usr/lib/libGLcore.so.1 as it should be (on Nvidia) ???? if i don't link with -lSDL then the linker will use that libraries, of course SDL is not use. So i do suspect -lSDL to link with a kind of "static" wrong opengl lib at the link time, but i am just guessing..... Does anyone have the same problem ? Help is needed. Thanks

09-12-02, 11:49 PM	#3
MacSlow Registered User Join Date: Jul 2002 Location: Aachen, Germany Posts: 76	Hm... did you compile the SDL library you're using yourself (after you installed the nvidia-driver) or do you use a precompiled binary distribution of SDL? Best regards... MacSlow

09-13-02, 12:25 AM	#4
superconti Registered User Join Date: Sep 2002 Posts: 5	Well, it came from a distribution redhat 7.3, but i found out the problem, i had to rename/delete some libgl and libglcore.a, then i ran again sdl-config --lib and i got new flags, now it does work. So, some conflict between Nvidia Opengl and Mesa Opengl. Thanks for answering.