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Subject: Re: [OMPI devel] autoconf warnings: openib BTL
From: Vasily Filipov (vasily_at_[hidden])
Date: 2014-03-06 07:08:38


On 05-Mar-14 18:08, Jeff Squyres (jsquyres) wrote:
> On Mar 3, 2014, at 10:59 PM, Vasily Filipov <vasily_at_[hidden]> wrote:
>
>> Yes, it is possible, but there is some different if I will do it this way -
>> With the current implementation (today into a trunk) if AC_RUN_IFELSE fails => old code of RDMACM will rise,
>> And by way you suggest, if we postpone the decision to a run time and the check fails =>
>> we have to abort RDMACM at all, because it was compiled for working with AF_IB.
>> So my question to you, if we take into account all this stuff above -
>> What's the right way to implement it ? What do you think ?
> I'm not sure I understand. Can't you write something like:
>
> #if HAVE_DECL_AF_IB
> rc = try_using_af_ib();
> if (OMPI_ERR_NOT_AVAILABLE == rc) {
> rc = try_the_other_way();
> }
> #else
> rc = try_the_other_way();
> #endif
     I mean I cannot use "another way" if func call for
"try_using_af_ib" fails (call for "try_the_other_way()") because RDMACM
was compiled for AF_IB usage (different fields in structs, different
functions prototypes).

>