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Subject: Re: [OMPI devel] Libevent visibility problem
From: Ralph Castain (rhc_at_[hidden])
Date: 2011-07-12 18:21:39

On Jul 12, 2011, at 12:29 PM, Barrett, Brian W wrote:

> On 7/11/11 4:31 PM, "Ralph Castain" <rhc_at_[hidden]> wrote:
>> On Jul 11, 2011, at 2:51 PM, Barrett, Brian W wrote:
>>> Hi all -
>>> When libevent was made its own component last fall, it appears that the
>>> function renames and visibility settings were lost. This is proving
>>> rather problematic for a project I'm trying to get running with the
>>> trunk
>>> which uses libev (which provides a libevent compatibility layer). It
>>> works fine with Open MPI 1.4 and 1.5, which rename the libevent
>>> functions
>>> in rename.h, but causes symbol clashes for the trunk. This seems like a
>>> rather glaring oversight, especially since there was a bunch of work
>>> done
>>> to remove the visibility flags from the libevent component.
>>> At one point, someone was running a symbol checker to make sure things
>>> like this didn't happen; has that been killed off?
>>> Can whomever is responsible for the new libevent please fix this?
>> I guess that would mostly be me - my penalty for doing the update. Can
>> you tell me which symbols are clashing? We honestly thought we had that
>> all worked out, but I don't know of any tool for checking it other than
>> the basic ones.
> It actually looks like all the event symbols are public in the trunk
> (1.4/1.5 are fine). Most of the symbols will have to be public, but were
> renamed (from event_add to opal_event_add, for example) in the previous
> releases. That seems to be the missing piece.

I see the problem - I'll try to fix it shortly. Might take me a few days as I'm in the middle of some other stuff.

Sorry about that - we thought we had it, but missed. :-(

> Brian
> --
> Brian W. Barrett
> Dept. 1423: Scalable System Software
> Sandia National Laboratories
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