On 30/03/11 13:18, Jack Straw wrote:
Thanks Peter.
I think I might be going about this the wrong way possibly though now.
This is what I was struggling with;
When i try to use the opencv library I get this error on loading in the
plugin (it does compile without error and works when i'm not trying to
use it);
/usr/local/Nuke6.1v1/libstdc++.so.6: version `GLIBCXX_3.4.11' not found
(required by /usr/lib/libdirac_encoder.so.0)
Now if I preload using this, just because I saw the same error in one of
the threads here and that was the fix;
export LD_PRELOAD=/usr/lib64/libstdc++.so.6:/lib64/libgcc_s.so.1
I get past that error and get this one;
/usr/lib/libavcodec.so.52: symbol av_random_init, version LIBAVUTIL_49
not defined in file libavutil.so.49 with link time reference
Now I dont know how to progress past this.
Hi,
It probably is a compiler incompatibility issue somewhere...
Can you do a:
strings /usr/lib64/libstdc++.so.6 | grep -i gcc
The one bundled with Nuke is built with gcc 3.3, whereas I'm guessing
the one on your system in /usr/lib64/ is more modern (mine on Ubuntu is
4.2) so I'd say they are ABI incompatible.
It looks like the first error above is because your
/usr/lib/libdirac_encoder.so.0 was built with gcc 3.4 which isn't
compatible with the libstdc++ we bundle that was built with 3.3.
The second error looks like you're trying to link with a newer
libavcodec on your system - I'd try linking against the .49 one we
bundle with Nuke, but admittedly, you'd probably want a later version
than that.
So you'll have to work out what's dynamically linking with what - might
be a case of ldd'ing every file you're linking to in order to work out
where they're resolving...
As a last resort, you could always try statically linking, but that
might introduce duplicate symbol issues...
Regards,
Peter
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Peter Pearson, Software Engineer
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