New error after reinstalling the opencog system

[Johannes Castner]

Hi, I have now reinstalled and recompiled things, after a recent bug was resolved, but now I’m getting this error message when importing:

Traceback (most recent call:
    from opencog.atomspace import types
ImportError: /usr/local/lib/opencog/libquery.so: undefined symbol: _ZN7opencog8BindLink11set_rewriteERKNS_6HandleE

What must I do to fix this problem?

Please help!

As always, with great appreciation,

Johannes

[Nil Geisweiller]

On 3/8/19 12:20 PM, Johannes Castner wrote:
> Hi, I have now reinstalled and recompiled things, after a recent bug was resolved, but now I’m getting this error message when importing:
>
> Traceback (most recent call:
>     from opencog.atomspace import types
> ImportError: /usr/local/lib/opencog/libquery.so: undefined symbol: _ZN7opencog8BindLink11set_rewriteERKNS_6HandleE
>
> What must I do to fix this problem?

Maybe try to purge the existing installation.

sudo trash /usr/local/include/opencog
sudo trash /usr/local/share/opencog
sudo trash /usr/local/lib/opencog
sudo trash /usr/share/guile/site/2.2/opencog*
sudo trash /usr/local/share/guile/site/2.2/opencog*
trash ~/.cache/guile

and reinstall everything cogutil, atomspace and opencog, from fresh
build directories.

BTW, if you don't like compile-waiting, I highly recommend ccache

https://ccache.samba.org/

Increase the cache size to at at least 16GB (even better 32GB). You'll
only have to wait the first time to ever compile something. This thing
is a marvel, it's also rock solid.

Nil

[Johannes Castner]

Thank you! Still working on it but hopefully it should be ready, so I can start doing something with that interesting pattern miner soon. It’s a bit of an ordeal to install and reinstall things but we’re working on a script that automates the whole setting up process of opencog, the AtomSpace etc. with elastic beanstalk. Hopefully we’ll have that soon and then this process will be smoother.

Johannes