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From: Nikos Chantziaras <realnc@arcor.de>
Subject: [gentoo-user] Re: gcc upgrade
Date: Sat, 10 Jul 2010 03:57:42 +0300
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On 07/10/2010 04:16 AM, Valmor de Almeida wrote:
>
> Hello,
>
> I just updated the portage tree and gcc was upgraded. I have set gcc to
> the newer version
>
> ->  gcc-config -l
>   [1] i686-pc-linux-gnu-4.3.4
>   [2] i686-pc-linux-gnu-4.4.3 *
>
> and I am trying to rebuild the whole system with
>
>   emerge -e system
>   emerge -e world
>
> assuming this all goes without trouble (will take a while), should I
> unmerge version 4.3.4?

There's no reason to.  Unless you don't need it anymore.