Xserver extension missing

[Gregory Vandenbrouck <vdb@gnu.org>]

Hi,

  I get this message when working on my project:

Xlib:  extension "GLX" missing on display "139.124.51.69:0.0".
Xlib:  extension "GLX" missing on display "139.124.51.69:0.0".

Is there a way to add this extension to my x server ? 
I use:
ii  xbase           3.3.2.3a-8.1   X Window System (XFree86)
infrastructure

TIA 

		vdb


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