Just re-emerge the older version e.g. emerge =...gcc-4.4.5 (... is the
category). Then use eselect gcc or gcc-config to select the active gcc
version.

CMIIW

Rgds,
 On Feb 20, 2012 11:24 AM, <meino.cramer@gmx.de> wrote:

> Hi,
>
> I want to downgrade gcc from 4.5.3-r1 to 4.4.5.
>
> The Gentoo gcc UPgrade guide tells me, that ABI are only upward
> compatible which implies problems when downgrading and not upgrading.
>
> Nonetheless a downgrade is needed here and I want to go
> to gcc-4.4.5.
>
> How can I acchieve this in a clean way?
>
> Best regards,
> mcc
>
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>