pdl FTBFS - use of GLvoid has a return type in GL/gl.h

[Jérémy Bobbio]

Hi!

Here's what I have found while trying to fix pdl FTFBS:

 * The line with "GLvoid T_VOID" in Graphics/TriD/OpenGL/typemap is
   buggy.  xsubpp does not know the T_VOID typekind.

 * It was never triggered before the GL/gl.h header included in Mesa
   6.5.1 (relevant lines added in revision 1.127 [1]), as no other
   functions had a return type of GLvoid before. 

Changing the return type of glClearDebugLogMESA() and
glGetDebugLogMESA() from "GLvoid" to "void" allowed pdl to build.

The meaning of the "void" type is completely hard-coded into xsubpp.
IMHO, it seems harder to modify xsubpp than to modify GL/gl.h.

Any opinion about a correct fix for this issue?

[1] http://webcvs.freedesktop.org/mesa/Mesa/include/GL/gl.h

Regards,
-- 
Jérémy
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