Re: libmlx5 doesn't build on s390x

[Jarod Wilson <jarod-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 2017-03-23 12:58 PM, Jason Gunthorpe wrote:
> On Thu, Mar 23, 2017 at 12:50:14PM -0400, Jarod Wilson wrote:
>
>>> Any option that you saw below message in the log ?
>>> "Architecture NOT able to do coherent DMA (check libibverbs/arch.h) some
>>> providers disabled!")"
>>
>> Yep, it's there, lost it in all the verbosity. Okay, that explains that.
>
> FWIW, that section after 'Missing Optional Items:' reflects everything
> 'wrong' with the build environment. An ideal build will list nothing,
> eg on FC25.
>
> Everything else means something is broken and cmake is working around
> the breakage somehow. It is worth reviewing if the thing is really
> broken or not...

 From the s390x build log:

-- Missing Optional Items:
--  Architecture NOT able to do coherent DMA (check libibverbs/arch.h) 
some providers disabled!
--  C11 stdatomic.h NOT available (old compiler)
--  rdma/vmw_pvrdma-abi.h NOT found (old system kernel headers)
--  -Wmissing-field-initializers does NOT work

The old compiler part isn't going to change, and we don't have the 
vmware pvrdma driver backported at this time.

-- 
Jarod Wilson
jarod-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
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