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To: A JOSEPH KOSHY <koshy@india.hp.com>
Subject: Re: CVS basics? 
Cc: "Karl Denninger, MCSNet" <karl@mcs.com>, freebsd-hackers@FreeBSD.ORG
In-reply-to: Your message of Fri, 26 Jul 1996 08:36:17 +0530
Date: Fri, 26 Jul 1996 10:59:41 -0600
From: Warner Losh <imp@village.org>
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

About two weeks ago, I upgraded a 2.1-stable (Aprilish) to a
2.2-current system.  Here's what I did as root

<level 0 backup>
rm -rf /usr/obj
ln -s /bigdisk/usr/obj /usr/obj
rm -rf /usr/src
ln -s /bigdisk/usr/src /usr/src
cd /usr/src
cvs -d /bigdisk/FreeBSDCVS checkout src
cd src/usr.bin/make
make depend all install
cd ../../gnu/usr.bin/ld
make depend all install
cd ../../..
make world
<wait 10 hours>
reboot

I then used the new configure to configure and build a new kernel.  I
then rebooted right away after I installed the new kernel.  You can
run 2.2-current binaries with a 2.1 kernel, but there are many that
don't work (ps, vmstat, etc).

The above translates into "do level 0 backups; blow away what you
have; build make; build ld; make world; reboot and build a kernel"
I don't know if additional dependencies have crept in since then or
not.

Warner

P.S.  I may have forgotten or added extra .. above.