> > That's what I did: I found a 2017 stage3 with a still older glibc and
> > managed to upgrade to a 2020 gentoo while masking the last glibc
> > versions. That was tricky because I had to git-checkout intermediate
> > versions of the portage tree in order to deal with the EAPI changes but
> > I have a working chroot now. Thanks.

> That's the easy way to do it, yes.

> The hard way is to treat this as a cross-compilation problem and bootstrap
> your own stages from scratch. Instructions would be a bit longer...

> Andreas K. Hüttel

I have looked through crossdev.  Is that what it would take to cross-compile and bootstrap stages from scratch?

Could that be done from (instead of an old glibc) musl, uClibc, or FreeBSD or NetBSD?

Tom