Re: [gentoo-user] gcc 3.4.x --> 4.1.x : a couple of questions

[Bo Ørsted Andresen]

On Thursday 18 January 2007 23:24, b.n. wrote:
> - I'm going to follow [1] (of course) and [2] (looks nice). Other useful
> guides?

[1] alone should be fine. Assuming your CHOST isn't i386.

> - Is there a new incompatible GCC upgrade going to be unmasked? I see
> 4.2 and 4.3 are hard masked, but if there is the suspicion they're going
> to be used relatively soon AND they are not binary compatible with 4.1,
> I may wait for those. When I did 3.3-->3.4, I waited long, and 4.1
> became stable after a week... :/

You didn't tell us whether you are running stable or ~arch. If you're stable 
then certainly not since it's not even ~arch yet. Even if ~arch I don't think 
so.

> - Is it mandatory/highly advisable to recompile also the kernel, or can
> I postpone? In the first case, when it's better to recompile it (before
> all/after all)?

It's best to do it. I think I'd compile it right before `emerge -e world` and 
wait with the reboot till it's all done. That way kernel modules compiled 
during world will be built against a kernel that was compiled with the same 
compiler.

> - Do I have to emerge glibc 2.4 first and gcc later, or I can have glibc
> emerged in the emerge -e system?

Assuming your CHOST isn't i386 it's fine to just let `emerge -e system` do it 
when instructed to do that.

> - Any other glitch/tarpit I must be aware of?

If on the other hand your CHOST is i386 then you must follow the guide for 
changing your CHOST very carefully (I'd do it first) and avoid the gcc 
upgrade guide till after you've finished the CHOST guide. If you try to 
follow both guides at once your system will become broken! (If you want to 
just stay on i386 then you need a no-nptl profile).

> [1]http://www.gentoo.org/doc/en/gcc-upgrading.xml#doc_chap2
> [2]http://www.benr75.com/pages/gentoo_gcc_4.1.1_upgrade_guide

-- 
Bo Andresen