OpenGL for xmame

[Lian Liming <lianliming@realss.com>]

Hi all,
   I am using deiban/unstable with xfree86 and i have  installed 
"nvidia-kernel" and "nvidia-glx" for my nvidia video card.  The option 
for "video driver" in XF86Config have also be changed from "nv" to "nvidia".

   But  i still have a problem starting the xmame with the following 
errors:
   ................
   GLERROR: cannot access OpenGL library libGL.so
   GLERROR: dlerror() returns [libGL.so: cannot open shared object 
file: No such file or directory]
   Segmentation Fault.

   It seems the opengl is not available on my box. So how to enable the 
opengl?

   Thank you for suggestions.