Re: [igraph] undefined symbol: xmlStrEqual when import igraph.Graph

[Tamas Nepusz]

For the record: we have managed to solve the issue. The problem was that there was another copy of libxml2 installed on the system in /usr/local/lib, and this was somehow unsuitable for dynamic linking. Removing the extra copy of libxml2 fixed the problem.

T.

On Wed, Jan 25, 2017 at 10:33 AM, Tamas Nepusz <address@hidden> wrote:

Hi Andrew,

Can you post me (in private) the full install log of "pip install python-igraph" when starting from scratch? You can get the install log with the following command:

pip install python-igraph 2>&1 >pip.log

Thanks,

T.

On Wed, Jan 25, 2017 at 10:00 AM, Andrew O'Harney <address@hidden> wrote:

I gave that ago, but to no avail. I'm at a bit of a loss as to what could be going on.

ᐧ

On 23 January 2017 at 20:40, Tamas Nepusz <address@hidden> wrote:

Hi Andrew,

This is weird -- it should not have been able to compile and link the Python interface to igraph without libxml2 at all.

You mentioned that you installed python-igraph from pip -- this almost surely means that igraph itself was compiled on your machine locally. The only thing that I can think of right now is that you have libxml2 on your machine but not libxml2-dev; the latter package is needed to _compile_ packages that link to libxml2. So, I would probably try this:

- ensure that libxml2-dev and pkg-config are both installed

- uninstall python-igraph (either destroy the venv and start from scratch, or run pip uninstall python-igraph)

- reinstall python-igraph with "pip install python-igraph"

All the best,

T.

On Mon, Jan 23, 2017 at 11:44 AM, Andrew O'Harney <address@hidden> wrote:

This gives

        linux-vdso.so.1 =>  (0x00007ffdd33b8000)

        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7ce24c5000)

        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7ce2143000)

        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7ce1f2c000)

        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f7ce1d0f000)

        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7ce1946000)

        /lib64/ld-linux-x86-64.so.2 (0x000055e56299f000)

I can't see a mention of libxml there. How can I add it and is there a reason it wasn't linked with pip?

-Andy

_______________________________________________
igraph-help mailing list
address@hidden
https://lists.nongnu.org/mailman/listinfo/igraph-help

_______________________________________________
igraph-help mailing list
address@hidden
https://lists.nongnu.org/mailman/listinfo/igraph-help

_______________________________________________
igraph-help mailing list
address@hidden
https://lists.nongnu.org/mailman/listinfo/igraph-help