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Date: Thu, 23 Jan 2014 07:56:01 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Jakub Lach <jakub_lach@mailplus.pl>
Subject: Re: Lessons learned from source upgrade from FreeBSD i386 9.2 Stable
 to FreeBSD i386 10.0 Release.
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On Thu, 23 Jan 2014, Jakub Lach wrote:

> I plan to stay some time on 9.2-STABLE (already pkgng and clangfied) waiting
> maybe till next release from 10-STABLE tree, however 10-STABLE will be where
> I will be eventually heading, so notes in this spirit are valuable reminders
> at least, I appreciate it.

My experiences converting a couple of systems from 9-STABLE to 10-STABLE 
over the last couple of months were really pretty easy.  These were 
source updates for both base and ports.  Despite changing from pkg_* to 
pkg and KMS X drivers at the same time, it was surprisingly smooth.

If you have devel/ccache installed, remove it before starting, though, 
it has problems with clang.  Using -DNOCLEAN with an existing /usr/obj 
can go even faster than ccache: less than two minutes for a buildworld 
on my frequently updated i5/SSD system, sometimes less than one minute.