From: Ondrej Mosnáček on
gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/968#note_53151...
AFAIK, some of the configs are (unfortunately) dependent on the range of
features supported by the local GCC, so that's probably the source of
the failing checks (assuming you are on a stable Fedora release). I
don't know there's any workaround for that, short of installing GCC from
rawhide...