Steve,

I think (and I may be wrong on this) that after running `make install`, you
also need to run `ldconfig` to update the cache used by the run-time linker.

--Bradford

On Wed, Feb 18, 2015 at 7:13 PM, Steve Koch <[email protected]>
wrote:

> Hi Bradford, I checked and my /etc/ld.so.conf.d/libc.conf file does indeed
> have that path:
>
> # libc default configuration
> /usr/local/lib
>
> But I still needed to change my .bashrc file to get igraph library
> working. It's above my head to explain why.
>
> --Steve
>
> On Wed, Feb 18, 2015 at 4:52 PM, Bradford Boyle <
> [email protected]> wrote:
>
>> On Ubuntu 14.04.1, the file /etc/ld.so.conf.d/libc.conf contains
>> /usr/local/lib. Adding it shouldn't be needed.
>>
>> --Bradford
>>
>> On Wed, Feb 18, 2015 at 4:49 AM, Tamas Nepusz <[email protected]> wrote:
>>
>>> Hello Steve,
>>>
>>> > export LD_LIBRARY_PATH=/usr/local/lib/
>>> >
>>> > Is this something that should be added to the current documentation?
>>> Is it
>>> > a small bug? Or is it just a quirk of my systems (I had same behavior
>>> on
>>> > two Ubuntu systems).
>>> /usr/local/lib is usually on the linker's default path, so any library
>>> that you
>>> put there should be picked up automatically. On Ubuntu, this is not the
>>> case so
>>> that's why you have to add it to the linker path using the
>>> LD_LIBRARY_PATH
>>> variable. Another way to do it is to edit /etc/ld.so.conf or some file in
>>> /etc/ld.so.conf.d -- this will add /usr/local/lib to the linker path
>>> permanently, for all users of the system. See the following question on
>>> Stack Overflow:
>>>
>>>
>>> http://stackoverflow.com/questions/17889799/libraries-in-usr-local-lib-not-found
>>>
>>> So yes, I think this issue is related to Ubuntu systems only, but as it
>>> is
>>> a fairly common Linux distribution, I think it's worth adding a note to
>>> the
>>> homepage.
>>>
>>> All the best,
>>> --
>>> T.
>>>
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>>>
>>
>>
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