[Xquartz-dev] libGL.1.2.dylib shipped with 2.3.3 RC5 makes applications crash

[Jeremy Huddleston]

So... I looked at the mplayer source...

The mplayer build system is fubar, and I don't want to try fixing it.   
They're using a common set of ldflags for everything indiscriminately.

gl_common.c is for GLX and is used for vo_gl and vo_gl2.  vo_macosx.m  
is for vo_macosx.  The former needs -lGL with no -fw OpenGL, the  
latter needs -fw OpenGL with no -lGL.

Feel free to send this info upstream and give me a bug number to  
follow, but their build system is not clean enough for me to want to  
try patching.

On Apr 22, 2009, at 20:59, Jeremy Huddleston wrote:

> Then the problem is much deeper in that it's trying to mix GLX and  
> CGL at the same time.  My guess is that this is a complicated and  
> incorrect set of #ifdefs... many applications have such problems,  
> and I've been working with upstream developers to get them fixed as  
> I've run into them.
>
> mplayer should have two output plugins for gl.  One is macosx which  
> should be linked with '-fw OpenGL'; the other is glx which should be  
> linked with -lGL.
>
> The fact that glXDestroyContext is referenced from a file called  
> gl_common.c scares me because it seems that their "common GL" code  
> actually isn't GL at all but GLX.  This is definitely an mplayer  
> bug, so please file this issue upstream, and let me know the URL to  
> the bug, so I can follow up with those developers.
>
> On Apr 22, 2009, at 20:49, vmrsss wrote:
>
>> PS. If I remove -lGL, linking fails because of
>>
>>> Undefined symbols:
>>> "_glXChooseVisual", referenced from:
>>>     _config in vo_gl.o
>>> "_glXCreateContext", referenced from:
>>>     _setGlWindow in gl_common.o
>>> "_glXGetConfig", referenced from:
>>>     _initGl in vo_gl2.o
>>>     _initGl in vo_gl2.o
>>>     _initGl in vo_gl2.o
>>>     _initGl in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>>     _config in vo_gl2.o
>>> "_glXSwapBuffers", referenced from:
>>>     _swapGlBuffers in gl_common.o
>>> "_glXDestroyContext", referenced from:
>>>     _releaseGlContext in gl_common.o
>>>     _setGlWindow in gl_common.o
>>>     _setGlWindow in gl_common.o
>>> "_glXMakeCurrent", referenced from:
>>>     _releaseGlContext in gl_common.o
>>>     _setGlWindow in gl_common.o
>>
>> which are not in /System/Library/Frameworks/OpenGL.framework/ 
>> Libraries/libGL.dylib nor in OpenGL, apparently. (Sorry for being  
>> so ignorant about all this...)
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