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Date: Fri, 22 Feb 2013 13:40:50 -0800
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: Daniel Eischen <deischen@freebsd.org>
Subject: Re: WITHOUT_CLANG_IS_CC: There and back again
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On Fri, Feb 22, 2013 at 04:30:43PM -0500, Daniel Eischen wrote:
> 
> At that point my system was completely hosed.  Every binary (/bin,
> /sbin, etc) would sig 11.  I had to build a world on another
> system, then use /rescue to NFS mount the other system and
> copy over /libexec, /lib, and /usr/lib.  This let me recover
> enough to svn up to r247164. remove WITHOUT_CLANG_IS_CC from
> /etc/make.conf, and build/install a working world.
> 
> Is switching from Clang to GCC suppose to work?
> 

It works if you do thorough switch. Use 

WITH_GCC
WITHOUT_CLANG

then after the installworld step, use 'make delete-old'
and 'make delete-old-libs' to rid your system of the leftovers.

-- 
Steve