RTLD_GLOBAL in loading gl library

[O.Sezer]

Hi,

In qgl_linux.c, the gl library is loaded with only
RTLD_LAZY flag set, but without RTLD_GLOBAL .
Is there any reason why this is so? If RTLD_GLOBAL
is set (see the attached patch), I can easily hack
hardware gamma for my old Voodoo/Voodoo2 cards.
If interested, I can send a patch for it, as well.

Cheers,
Ozkan

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