Re: [gentoo-user] gcc upgrade from 3.x to 4.x, when should I run revdep-rebuild?

[Alan McKinnon]

On Thursday 07 September 2006 23:34, michael@×××××××××××××.com 
wrote:
> I'm upgrading my gcc from 3.x to 4.x. I've done the gcc
> switching, and now I'm updating my system.
>
> The recommended steps are:
>
>    # emerge -eav system
>    # emerge -eav world
>
> While emerging my system I received a message suggesting I
> run revdep-rebuild:
>
>    warning - be sure to run revdep-rebuild now
>
> My question is, should I run revdep-rebuild right after
> emerging the system, or should I wait until after I emerge
> world? My concern was that in between, my system is in an
> unstable intermediate state, and it might be damaged by a
> revdep-rebuild in between.

There's no need to run revdep-rebuild, whatever you do it will 
be redundant. The notices you are seeing are primarily intended 
for when you explicitly emerge packages that other packages may 
link to. So everything that might be relevant to the notice you 
see is going to be recompiled anyway when you run 'emerge -e 
world'.

As previously noted on this list, the mention of using 
revdep-rebuild as a shortcut when upgrading gcc was intended 
for the move from 3.3 to 3.4 *only*. The specifics of that 
upgrade made this shortcut possible, in all other upgrades you 
definitely don't use it. i.e. the guide is in need of an uodate 
to make this explicitly clear. If you need more info, ask 
Richard for the inside dope - he's the resident gcc expert 
around here :-)

alan
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