From owner-freebsd-doc  Wed Jun 27  9:29:50 2001
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Date: Wed, 27 Jun 2001 18:30:44 +0200
From: Rahul Siddharthan <rsidd@physics.iisc.ernet.in>
To: doc@freebsd.org
Subject: Handbook: Build world / build kernel
Message-ID: <20010627183044.A77365@lpt.ens.fr>
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X-Loop: FreeBSD.org

I find the handbook section
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-building.html
a bit confusing.  Suppose you have upgraded the sources.  In what
order do you do the following?

 o  make buildworld
 o  make installworld
 o  make buildkernel
 o  make installkernel

The section in question says

  Warning: If you have upgraded your sources since your last kernel
                                                             ^^^^^^
  build, you must use the make buildkernel method to build your kernel.
  Otherwise, old utilities will be used to build the kernel, which will
  probably fail. Do not use the config/make sequence to build your
  kernel if you have updated the sources!

Should that be last *world* build?  I mean, what does the old kernel
have to do with old utilities being used to build the new kernel?

In that case, would the following sequence be correct?
 o make buildworld
 o make buildkernel
 o make installkernel
 o make installworld
 o reboot

Basically, is it safe to do "make buildkernel" before "make
installworld", ie with the old userland?  Or do you need to do "make
installworld" before "make buildkernel"?  If the latter, then while
you're doing "make buildkernel", your old kernel is living for a while
with your new userland: is that a problem?

I'm willing to submit a patch if someone can clear my confusion...

R

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