(In reply to Sarah Kriesch from comment #16) > @Aaron One hint: We can forward bug reports for IBM via the openSUSE > Bugzilla, too. I believe that upstream bug reports require more time than > the internal routing process. I've got a quick reply from the SystemZ backend maintainer, who seems to be working for IBM. We just didn't get to an agreement so far. The question is whether the ABI should depend on the feature level, which I think it should not. Do you happen to know about plans to switch SLE/openSUSE to a default architecture level of z13? That would be cutting the Gordian knot. Thanks anyway for offering help, if this doesn't work out we might come back to your offer.