On Fri, Sep 13, 2019 at 8:38 AM Ankur Sinha <sanjay.ankur(a)gmail.com&gt; wrote: > Hello, > > A tool I am trying to package is failing only on PPC somehow: > https://bugzilla.redhat.com/show_bug.cgi?id=1731487 > >> make[2]: Leaving directory '/builddir/build/BUILD/MUSIC-a78a8e2c90b07274db94265db75c320dbb01f9fb/MUSIC-a78a8e2c90b07274db94265db75c320dbb01f9fb-openmpi/src' >> BUILDSTDERR: error.cc: In function 'void MUSIC::error()': >> BUILDSTDERR: error.cc:36:5: error: 'MPI' has not been declared >> BUILDSTDERR: 36 | MPI::COMM_WORLD.Abort (1); >> BUILDSTDERR: | ^~~ >> BUILDSTDERR: error.cc: In function 'int MUSIC::getRank()': >> BUILDSTDERR: error.cc:70:9: error: 'MPI' has not been declared >> BUILDSTDERR: 70 | if (MPI::Is_initialized ()) >> BUILDSTDERR: | ^~~ >> BUILDSTDERR: error.cc:71:14: error: 'MPI' has not been declared >> BUILDSTDERR: 71 | return MPI::COMM_WORLD.Get_rank (); >> BUILDSTDERR: | ^~~ >> BUILDSTDERR: make[2]: *** [Makefile:739: libmusic_la-error.lo] Error 1 > > On all other arches, it builds just fine, so there's something different > with the openmpi package on ppc here. Any ideas? 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,

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).

Hi Orion, On Tue, Sep 17, 2019 15:37:57 -0600, Orion Poplawski wrote: > > I have no idea as I really don't know exactly what --enable-mpi-cxx does. I > was surprised that it didn't appear to affect more packages. F30 still seems to suffer from this issue. Any chance the fix could be include there also please? https://koji.fedoraproject.org/koji/taskinfo?taskID=38314982