[Bug 87856] Driver load fails with no error on ppc64 host

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87856

            Bug ID: 87856
           Summary: Driver load fails with no error on ppc64 host
           Product: Mesa
           Version: 10.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: freedesktopbugs at 63bit.net

Created attachment 111507
  --> https://bugs.freedesktop.org/attachment.cgi?id=111507&action=edit
Xorg log, dmesg | fgrep radeon, and glxinfo with LIBGL_DEBUG set

I have a PowerPC G5 (ppc64 with 64-bit userland) with working KMS using a
(ostensibly x86) Radeon HD4650. KMS is enabled and the kernel and Xorg parts of
KMS/DRI2 appear to be attaching correctly.

After X starts, running LIBGL_DEBUG=verbose glxinfo outputs the following:
libGL: OpenDriver: trying /usr/lib64/dri/tls/r600_dri.so
libGL: OpenDriver: trying /usr/lib64/dri/r600_dri.so
libGL: driver does not expose __driDriverGetExtensions_r600():
/usr/lib64/dri/r600_dri.so: undefined symbol: __driDriverGetExtensions_r600
libGL: Can't open configuration file /root/.drirc: No such file or directory.
libGL: Can't open configuration file /root/.drirc: No such file or directory.
libGL error: failed to load driver: r600
libGL: OpenDriver: trying /usr/lib64/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib64/dri/swrast_dri.so
libGL: driver does not expose __driDriverGetExtensions_swrast():
/usr/lib64/dri/swrast_dri.so: undefined symbol: __driDriverGetExtensions_swrast
libGL: Can't open configuration file /root/.drirc: No such file or directory.
libGL: Can't open configuration file /root/.drirc: No such file or directory.
libGL error: failed to load driver: swrast
Error: couldn't find RGB GLX visual or fbconfig
Error: couldn't find RGB GLX visual or fbconfig

I am under the impression that the undefined symbol should not be causing
problems after reading this bug: 
https://bugs.freedesktop.org/show_bug.cgi?id=72198

Nonetheless, glxgears will not run, and in general it appears mesa acceleration
is not occurring. Mesa was compiled with support for llvm and the r600
generator.
I am attaching various logs. I would be glad to test patches or hacks :)

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