Support for FreeBSD4 ended in 2007, I think it is exaggerated to put COMPAT_FREEBSD4 in the GENERIC or MINIMAL kernel configs by default.
I propose to remove COMPAT_FREEBSD4, COMPAT_FREEBSD5, COMPAT_FREEBSD6, COMPAT_FREEBSD7 and COMPAT_FREEBSD8 from those files.
I could not think of a reason to keep those options enabled by default, I'm only seeing possible security vulnerabilities. (For example, HardenedBSD disabled those COMPAT* options other than COMPAT_FREEBSD10 for security reasons: see https://github.com/HardenedBSD/hardenedBSD/blob/hardened/current/master/sys/amd64/conf/HARDENEDBSD)
Thanks for hearing me out :P
Created attachment 202092 [details]
This came up in a triage session at the 2019 Waterloo Hackathon but this issue needs to be addressed via discussion on mailing list, presumably as an FCP. Would you start the discussion on -arch or -current?
(In reply to Ed Maste from comment #3)
Yup, although I'm willing to initiate the discussion this weekend (time reasons).