So, the packagers are supposed to redefine this?

IIRC the rule of thumb (not always followed) usually is that such macros are prefixed with underscore(s).

So, the packagers are supposed to redefine this?

Yes. Technically also undefine them or add extra -G to the %cmake, but don't want to over-complicate the documentation there.

IIRC the rule of thumb (not always followed) usually is that such macros are prefixed with underscore(s).

No objection to that either. @ngompa mentioned a similar suggestion in the linked PR.

Yeah add the leading underscore and then this is good.