[Mesa-dev] VTK Offscreen Segfaults
Kevin H. Hobbs
hobbsk at ohiou.edu
Fri Aug 6 13:23:43 PDT 2010
On 08/06/2010 03:15 PM, tom fogal wrote:
> If you could build VTK with just a single GL library -- i.e. with just
> libOSMesa or just libGL, but not both -- and could reproduce the crash,
> that would rule out my symbol collision theory. I am not sure how easy
> that is, though...
That was shockingly easy... sort of.
I did my VTK build with both
and I left off -fvisibility=hidden thinking that I want the symbols that
are now included in libOSMesa.so to be available to VTK.
and what do you know the test passed.
however I wanted to see if VTK is really built with only libOSMesa.so so
I did :
$ ldd ../VTK_Build/bin/RenderingCxxTests | grep mesa
libOSMesa.so.7 => /tmp/mesa/lib64/libOSMesa.so.7 (0x00007fa97ff4a000)
libGL.so.1 => /tmp/mesa/lib64/libGL.so.1 (0x00007fa97bc7a000)
so it got pulled in somehow perhaps by libOSMesa.so itself?
If I do :
$ ldd ../mesa/lib64/libOSMesa.so | grep libGL.so
libGL.so.1 => /usr/lib64/nvidia/libGL.so.1 (0x00007f88ed2cf000)
because libOSMesa.so needs libGL.so and I have the nvidia drivers in my
dynamic linker path but VTK has an rpath set so...
What does all of this mean?
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