[gentoo-amd64] gcc in a multislot

[P.V.Anthony]

Hi,

I need to have two gcc. One the standard, that comes with gentoo. The 
other that is needed only gcc with vanilla flag.

In a harden gentoo, there is more than one gcc and the gcc can be 
selected by using gcc-config.

In the current server, there is only a standard gentoo gcc. I would like 
to install a gcc with vanilla flag. Plus be able to select them using 
gcc-config.

The gcc should be the same version.

How can this be done?.

P.V.Anthony