[gentoo-user] Gentoo chroot with old glibc

[Hervé Guillemet]

Hello,

I need to distribute some linux binaries and the one built with my 
up-to-date gentoo sytem won't run on distributions using older glibc.

My idea is too maintain a gentoo chroot dedicated for compiling my 
binaries which would (package.)mask recent versions of glibc and gcc 
ebuilds.

What's the better way to go ? If I start with some of the stage3 
available for download, I won't be able to downgrade the glibc.

Or do you have any suggestion for alternatives to this gentoo chroot ? 
(I'd prefer avoid installing some CentOS or Ubuntu as virtual guests).

-- 
Hervé