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From: Peter Humphrey <peter@prh.myzen.co.uk>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: gcc 4.7.3 --> 4.8.3
Date: Sun, 09 Nov 2014 09:59:57 +0000
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On Saturday 08 November 2014 18:17:02 Nikos Chantziaras wrote:
> On 07/11/14 19:46, James wrote:
> > Ok
> > 
> > so I'm still on 4.7.3; but if I set 4.8.3
> > as the default, should I rebuild @system ?
> > 
> >   # gcc-config -l
> >   [1] x86_64-pc-linux-gnu-4.7.3 *
> >   [2] x86_64-pc-linux-gnu-4.8.3
> > 
> > I saw the news item about 4.8.3-SSP, which I think is a good idea, but
> > how deeply, if at all, do I need to rebuild packages ?
> 
> You don't need to rebuild, although there are known problems with having
> both 4.7 and 4.8 installed, and having 4.7 be the active one (or any
> case where an older version is the active one.)
> 
> You should be able to just switch to 4.8 without rebuilding anything.
> That's what I did. Of course it can't hurt to rebuild everything, but
> you can schedule that for later (like an overnight rebuild of @world
> with --keep-going). It's not critical to do it immediately.

I'd have thought you needed to emerge -e world if you really want to be 
protected.

-- 
Rgds
Peter.