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From: Volker Armin Hemmann <volkerarmin@googlemail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] coexisting GCC versions
Date: Sun, 28 Jun 2009 01:31:04 +0200
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References: <y65ljndz43m.fsf@minnie.esd.mun.ca> <200906280124.45289.wonko@wonkology.org>
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On Sonntag 28 Juni 2009, Alex Schuster wrote:
> Roger Mason writes:
> > I need gcc 4.3 to compile a specific application.  I am hoping that I
> > can install gcc 4.3 alongside 4.1.1 without suffering some awful
> > catastrophe.  This is the output of emerge on the machine in question:
>
> [...]
>
> > Can someone confirm that I'll be able to use gcc 4.3 for the specific
> > application that needs it but then revert to 4.1.1 without having to
> > re-compile all or most of my system?
>
> I'm pretty sure you can. Emerge gcc 4.3, activate it with gcc-config,
> compile your application, and use gcc-config again to revert back to 4.1 if
> you like.
>
> Or keep 4.3 as default, I don't think you could run into problems.
>
> 	Wonko

he will over time. If you switch default compiler emerge -s world has to be 
done.

But seriously, why staying with 4.1? it's old... and 4.3 was a nice release...