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Date: Thu, 3 Nov 2011 13:36:21 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
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	(wonkity.com [127.0.0.1]); Thu, 03 Nov 2011 13:36:21 -0600 (MDT)
Cc: freebsd-questions@freebsd.org
Subject: Re: Is it safe to interrupt (Ctrl + C) while building a port or
 kernel?
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On Thu, 3 Nov 2011, ????? ????? wrote:

> Is it clear to interrupt the building process just by pressing Ctrl + <C>?
>
> If it's so, do I need to run "make clean" before I start "make" one more time?

With ports, a "make clean" before rebuilding is a good idea.  The build 
might not be able to continue cleanly, or might have to build 
differently, depending on what was changed.

For /usr/src, I just remove /usr/obj/usr and build again, but also use 
devel/ccache so there's not much penalty for doing that.