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
--
Christoph Junghans
Web:
http://www.compphys.de