Re: [Closed REQ 6229]: I can not use the Mesa library.

[daemon]

It looks as though Mesa 2.x, by default, has a smaller depth-buffer
size limit than Mesa 1.x did -- so though geomview worked with the
old Mesa, it doesn't with the new, unless you edit
   src/bin/geomview/x11/gvcamui.c

Near line 234, change
     GLX_RGBA, GLX_DEPTH_SIZE, 23,
to
     GLX_RGBA, GLX_DEPTH_SIZE, 16,

That should be all you need.

  Stuart