Re: [gentoo-user] coexisting GCC versions

[Volker Armin Hemmann <volkerarmin@googlemail.com>]

On Sonntag 28 Juni 2009, Alex Schuster wrote:
> Volker Armin Hemmann writes:
> > On Sonntag 28 Juni 2009, Alex Schuster wrote:
> >> Or keep 4.3 as default, I don't think you could run into problems.
> >
> > he will over time. If you switch default compiler emerge -s world has to
> > be done.
>
> According to Alan McKinnon's (and my own experience), this is not
> necessary, unless there are ABI changes. But there were none between 4.1
> and 4.3.
>
> http://www.mail-archive.com/gentoo-user@lists.gentoo.org/msg83724.html
>
>         Wonko

you don't have to compile between 4.2.0 and 4.2.1 - sure.

But with 4.2 to 4.3 I only got a stable system after compiling everything with 
the same compiler. So whatever Alan says - I know how borked my box was with 
half of the libs compiled by one compiler and the rest by the other.