Re: Help needed with failing PPC build: cannot find MPI with openmpi

[Ankur Sinha]

On Sat, Sep 14, 2019 15:37:22 -0600, Orion Poplawski wrote:
>  On 9/14/19 2:08 PM, Jerry James wrote:
>  > On Fri, Sep 13, 2019 at 8:38 AM Ankur Sinha <sanjay.ankur(a)gmail.com&gt; wrote:
>  > > Hello,
>  <snip>
>  > 
>  > The C++ headers are missing on ppc64le.  On other architectures, they
>  > are in /usr/include/openmpi-<arch>/openmpi/ompi/mpi/cxx.  The cxx
>  > subdirectory does not exist in the ppc64le build.  Indeed, if you look
>  > at build.log from the latest openmpi build on ppc64le, you'll find
>  > this line:
>  > 
>  > checking if want C++ bindings... no
>  > 
>  > You might want to contact the openmpi package maintainers to find out
>  > if that is deliberate or an accident.
>  > 
>  > Regards,
>  > 
>  
>  Indeed, this was deliberate, but should have been reverted long ago:
>  
>  commit 9f7f02128769699d51527f6c67f42885c2db8648
>  Author: Dan Horák <dan(a)danny.cz&gt;
>  Date:   Thu Oct 27 09:15:40 2016 +0200
>  
>      - Temporarily disable C++ bindings on ppc64/ppc64le (#1388561)
>  
>  https://bugzilla.redhat.com/show_bug.cgi?id=1388561
>  https://github.com/open-mpi/ompi/issues/2055#issuecomment-256487077
>  
>  I'm working on getting this fixed at least in rawhide. 
Thanks Orion, Jerry. I'll keep an eye out for the fix and then retry the
build.

Out of curiosity: shouldn't this have affected all tools using OpenMPI
C++ bindings?  NEST, for example built fine even on ppc:
https://koji.fedoraproject.org/koji/buildinfo?buildID=1362315

Build log:
https://kojipkgs.fedoraproject.org//packages/nest/2.18.0/5.fc32/data/logs...

I see that it found mpicxx, but not headers etc. However, that didn't
cause the build to fail (line #2439).

-- 
Thanks,
Regards,
Ankur Sinha "FranciscoD" (He / Him / His) |
https://fedoraproject.org/wiki/User:Ankursinha
Time zone: Europe/London