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Subject: Re: [OMPI devel] Libevent visibility problem
From: Barrett, Brian W (bwbarre_at_[hidden])
Date: 2011-07-14 10:51:22


Looks good, thanks!

Brian

On 7/14/11 1:12 AM, "Ralph Castain" <rhc_at_[hidden]> wrote:

>Should be fixed in r24902 - let me know.
>
>
>On Jul 12, 2011, at 4:30 PM, Barrett, Brian W wrote:
>
>> On 7/12/11 4:21 PM, "Ralph Castain" <rhc_at_[hidden]> wrote:
>>
>>> 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. :-(
>>
>> No problem, I figured out a temporary work-around on my end, so I'm not
>>in
>> a huge rush.
>>
>> Brian
>>
>> --
>> Brian W. Barrett
>> Dept. 1423: Scalable System Software
>> Sandia National Laboratories
>>
>>
>>
>>
>>
>>
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-- 
  Brian W. Barrett
  Dept. 1423: Scalable System Software
  Sandia National Laboratories