[patch] Use dlsym instead of glXGetProcAddress in xdriinfo

[Ian Romanick]

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Michel Dänzer wrote:
> On Mon, 2005-11-21 at 18:08 -0500, Felix Kühling wrote: 
> 
>>The attached patches (monolithic and modular) should fix dynamic linking
>>problems with xdriinfo, that NVidia users were complaining about. 
> 
> Does their driver support the DRI configuration infrastructure?

Of course not.  They use their own OpenGL infrastructure from top to
bottom.  I guess I'm not really sure why a user of Nvidia's
closed-source drivers would even care about xdriinfo.  It a nonsensical
thing to do.

>>Their libGL doesn't define glXGetProcAddress but only glXGetProcAddressARB.
>>The cleanest solution that works with any libGL is to use dlopen and
>>dlsym instead. This has the nice side effect that it removes all
>>build-time dependencies on libGL and GLX headers.
> 
> Couldn't there be an implementation of the DRI configuration
> infrastructure where glXGetProcAddress(ARB) works but dlopen/dlsym
> doesn't though?

Since libGL itself uses dlopen / dlsym, it's doubtful.
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