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Subject: Re: [hwloc-devel] hwloc-1.7 issue roundup
From: Pavan Balaji (balaji_at_[hidden])
Date: 2013-05-05 13:08:56


On 05/05/2013 12:05 PM US Central Time, Brice Goglin wrote:
> Le 05/05/2013 18:18, Pavan Balaji a écrit :
>> - hwloc's check for whether an explicitly function declaration is
>> needed (using _HWLOC_CHECK_DECL) was relying on whether a dummy call to
>> the function throws an error. This only works if the function
>> declaration is already present in one of the headers. If such a
>> declaration is not present, the test might fail with "implicit function
>> declaration" with the right CFLAGS. This leads the m4 macro to think
>> that the declaration is already there in one of the headers and an
>> additional declaration is not needed.
>
> I'll look at this, when/where did you need this? (for documentation and
> maybe testing one day)

Sorry, forgot to mention. The fls and flsl function checks fail without
this in our strict builds.

>> 2. I had reported an issue with libltdl in embedded mode (also in the
>> above thread). I believe Brice is looking into this, so I didn't
>> investigate it further.
>> [...]
>> I'd appreciate a cleaner fix to this issue.
>
> I am waiting for Jeff's feedback in thread "hwloc embedding vs libltdl".
>
> Not sure yet I will backport this into v1.7.1 since it is somehow
> intrusive. To be discussed

Ok, I'll carry our workaround forward in the mpich-3.1.x series.

> To summarize:
> * 1 partially applied, and the rest will likely be taken care of
> * 2 needs review by Jeff
> * 3-4 are fixed

Great. Thanks.

 -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji