Date: Tue, 23 Sep 2003 10:46:28 -0500 From: D J Hawkey Jr <hawkeyd@visi.com> To: Matthew Seaman <m.seaman@infracaninophile.co.uk>, questions at FreeBSD <freebsd-questions@freebsd.org> Subject: Re: Something I should know about 'make buildkernel ...', but I don't. Message-ID: <20030923154628.GA723@sheol.localdomain> In-Reply-To: <20030923144513.GA51933@happy-idiot-talk.infracaninophile.co.uk> References: <20030923143226.GA89496@sheol.localdomain> <20030923144513.GA51933@happy-idiot-talk.infracaninophile.co.uk>
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On Sep 23, at 03:45 PM, Matthew Seaman wrote:
>
> On Tue, Sep 23, 2003 at 09:32:26AM -0500, D J Hawkey Jr wrote:
> >
> > After applying patches, I bump $BRANCH in /sys/conf/newvers.sh, and would
> > like the running kernel to reflect the current patchlevel, but not at the
> > expense of a complete rebuild. Something this trivial shouldn't get me in
> > any trouble, kernel-wise, should it?
> >
> > Browsing Makefile.inc1, I see these defines:
> > -DNOCLEANDIR run ${MAKE} clean, instead of ${MAKE} cleandir
> > -DNOCLEAN do not clean at all
> >
> > Anyway, is it as simple as:
> > make buildkernel -DNOCLEAN KERNCONF=...
>
> So long as you aren't changing the kernel configuration, then you can
> probably use the 'old' build mechanism:
[SNIP]
> However, this is only worth doing if you're going to be recompiling
> the kernel a number of times, as the first time through it will
> compile everything.
Right! Most SAs these days don't effect the kernel. I usually leave
/usr/obj populated from the last build.
> Note that this won't put the object files
> etc. under /usr/obj...
Yeah, that's why I didn't want to do the "old" thang. I don't know
that it'd even work right.
But you seem to agree that something this trivial shouldn't yield a
broken kernel if /usr/obj/usr/src/sys/... is unchanged from the previous
build, right?
Dave
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