Use of COMPAT Kernel Options

[Gardner Bell]

--- On Fri, 12/4/09, APseudoUtopia <apseudoutopia at gmail.com> wrote:

> From: APseudoUtopia <apseudoutopia at gmail.com>
> Subject: Re: Use of COMPAT Kernel Options
> To: "Gardner Bell" <gbell72 at rogers.com>
> Cc: "Roland Smith" <rsmith at xs4all.nl>, "FreeBSD Questions" <freebsd-questions at freebsd.org>
> Date: Friday, December 4, 2009, 10:17 PM
> On Fri, Dec 4, 2009 at 5:04 PM,
> Gardner Bell <gbell72 at rogers.com>
> wrote:
> > --- On Fri, 12/4/09, Roland Smith <rsmith at xs4all.nl>
> wrote:
> >
> >> From: Roland Smith <rsmith at xs4all.nl>
> >> Subject: Re: Use of COMPAT Kernel Options
> >> To: "APseudoUtopia" <apseudoutopia at gmail.com>
> >> Cc: "FreeBSD Questions" <freebsd-questions at freebsd.org>
> >> Date: Friday, December 4, 2009, 9:52 PM
> >> On Fri, Dec 04, 2009 at 04:39:59PM
> >> -0500, APseudoUtopia wrote:
> >> > Hello,
> >> >
> >> > I'm working on editing the kernel
> configuration file
> >> for a custom
> >> > kernel. The system will be running FreeBSD
> >> 8.0-RELEASE-p1. I'm
> >> > wondering about the use of the COMPAT options
> in the
> >> kernel config.
> >> > COMPAT_43
> >>
> >> Well, COMPAT_43 one isn't even in GENERIC anymore,
> so I
> >> guess it is not that
> >> important anymore.
> >>
> >> > COMPAT_43TTY
> >>
> >> This is still in the GENERIC kernel. I'd keep it
> in
> >> initially. Then build a
> >> kernel without it. If that fails to start the
> system
> >> properly, you'll always
> >> have a good kernel to fall back on.
> >>
> >> Have a look at what is written under COMPATIBILITY
> OPTIONS
> >> in /sys/conf/NOTES.
> >>
> >> > COMPAT_FREEBSD[4-7]
> >>
> >> If you do not have binaries from ealier FreeBSD
> versions
> >> around, you can skip
> >> these.
> >>
> >
> > FWIW, a FreeBSD 8.0 kernel fails to build without
> COMPAT_FREEBSD7 so I'd keep that.
> >
> >
> 
> It didn't for me....I initially compiled with not a single
> COMPAT
> option before I sent the mail to this list. I wanted to
> inquire about
> it before I installed the kernel. But it did build with no
> COMPAT
> options at all....

Error on my part, sorry for the noise.