On Wed, Aug 5, 2020 at 7:01 PM Christoph Junghans <junghans(a)votca.org> wrote:
On Wed, Aug 5, 2020 at 2:21 PM Jeff Law <law(a)redhat.com> wrote:
>
> On Wed, 2020-08-05 at 21:56 +0200, David Schwörer wrote:
> > On 8/5/20 8:45 PM, Christoph Junghans wrote:
> > > Hi,
> > >
> > > I am trying to rebuild espresso to adapt to the recent cmake changes,
> > > when doing this I hit
> > >
https://github.com/espressomd/espresso/issues/3396, which prevents us
> > > from compiling espresso with -lto, so I set _lto_cflags to %{nil},
> > > which works for the build with openmpi, but gets ignored for the mpich
> > > build.
> > >
> > > I think the problem is that CMake picks up the lto flags from mpicxx
> > > and then puts them in
> > > MPI_CXX_COMPILE_OPTIONS. (Also compare mpicc -show).
> > >
> > > So I think the fix would be to strip these flags from mpicc. Sounds
reasonable?
> > >
> > > The flags also contain
> > > '-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1', which
effectively
> > > makes it depend on redhat-rpm-config. We had a similar issue in hdf5 a
> > > while back:
https://bugzilla.redhat.com/show_bug.cgi?id=1794625
> > >
> > > Christoph
> > >
> > Another related bug is:
> >
> >
https://bugzilla.redhat.com/show_bug.cgi?id=1821728
> Note that the BZ complains about -fstack-clash-protection in LLVM which has had
> various bits landing over the last few months. So that specific issue I'd
expect
> to resolve itself over time. The more general issue remains though.
https://src.fedoraproject.org/rpms/mpich/pull-request/4
Christoph
>
> jeff
> >
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--
Christoph Junghans
Web:
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