[gentoo-user] mesa's libGL.so looking in wrong place for r300_dri.so

[Grant Edwards]

I just switched to the radeon driver from the fglrx driver
Fglrx was a pretty old version and DRI had stopped working.
Oddly, emerge has "forgotten" it's installed. It obviously is
installed: it works (mostly), all its files are there, and 
and eselect opengl still shows an "ati" option.  How do you
uninstall a package that emerge claims isn't installed?

Anyway, I can't get DRI working with the open-source "radeon"
driver.  Mesa's libGL.so seems to be broken.  I've re-emerged
both mesa and mesa-progs, but libGL.so (part of mesa) can't
find other .so files that are _also_ part of mesa.

Here's the output from glxinfo with debugging turned on:

   libGL: XF86DRIGetClientDriverName: 5.3.0 r300 (screen 0)
   libGL: OpenDriver: trying /usr/X11R6/lib/dri/r300_dri.so
   libGL error: dlopen /usr/X11R6/lib/dri/r300_dri.so failed (/usr/X11R6/lib/dri/r300_dri.so: cannot open shared object $
   libGL error: unable to load driver: r300_dri.so
   libGL: OpenDriver: trying /usr/X11R6/lib/dri/swrast_dri.so
   libGL error: dlopen /usr/X11R6/lib/dri/swrast_dri.so failed (/usr/X11R6/lib/dri/swrast_dri.so: cannot open shared obj$
   libGL error: unable to load driver: swrast_dri.so
   libGL error: reverting to indirect rendering
   
mesa's libGL can't find r300_dri.so and swrast_dri.so, even
though they're both part of the same package and are exactly
where mesa installed them:

   # equery files mesa | grep dri.so
   /usr/lib/dri/r200_dri.so
   /usr/lib/dri/r300_dri.so
   /usr/lib/dri/radeon_dri.so
   /usr/lib/dri/swrast_dri.so
   
   # ls -l /usr/lib/dri
   total 9072
   -rwxr-xr-x 1 root root 2379724 Nov 24 14:55 r200_dri.so
   -rwxr-xr-x 1 root root 2397036 Nov 24 14:55 r300_dri.so
   -rwxr-xr-x 1 root root 2348908 Nov 24 14:55 radeon_dri.so
   -rwxr-xr-x 1 root root 2138328 Nov 24 14:55 swrast_dri.so
   
Why is libGL.so looking in the wrong place for the dri modules?

I suppose I could symlink /usr/X11R6/dri -> /usr/lib/dri, but
shouldn't the mesa ebuild have done that if it's required?

-- 
Grant Edwards                   grante             Yow! Loni Anderson's hair
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