Re: [igraph] problem with libigraph.so.0

[Tamas Nepusz]

Hi Enzo,

> Now, when I try to execute igraph_test I get the following error  
> message:
>
> ./igraph_test: error while loading shared libraries: libigraph.so.0:  
> cannot open shared object file: No such file or directory
This is most possibly because /usr/local/lib is not in the path where  
the linker usually looks for dynamic libraries. Last time when I used  
Ubuntu Linux, I think it was looking for dynamic libraries both in / 
usr/lib and /usr/local/lib, but maybe it's not the case anymore, so  
try doing this to confirm:

LD_LIBRARY_PATH=/usr/local/lib ./igraph_test

If it does work, this means that /usr/local/lib has to be added  
manually to the linker's path. You can do it only for your user by  
entering the following line into ~/.profile:

export LD_LIBRARY_PATH=/usr/local/lib:${LD_LIBRARY_PATH}

The system-wide linker path can be adjusted in /etc/ld.so.conf (IIRC).

===============

Besides that, Paul is right that we have packages for igraph, although  
they are precompiled only for i386. If you use i386, add the following  
two lines to /etc/apt/sources.list and then do apt-get update && apt- 
get install libigraph libigraph-dev to get the igraph packages:

deb http://cneurocvs.rmki.kfki.hu /packages/binary/
deb-src http://cneurocvs.rmki.kfki.hu /packages/source/

If you use a 64-bit architecture, you can still get the source from  
the above repository using your package manager and then build a .deb  
package to integrate igraph more seamlessly into your operating system:

apt-get build-dep igraph
apt-get source igraph

This should have downloaded the source code into a subdirectory of the  
current directory. Change to this directory and then do:

dpkg-buildpackage -rfakeroot

This creates the igraph .deb packages for x64 one level higher.

Hope this helps.

--
Tamas


> Now, the file libigraph.so.0 is in the specified directory (i  
> checked that). I guess this is quite a silly problem but since I'm a  
> begginer I've no clue.
>
> thanks in advance!
>
> Enzo
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help