[Sussex] Gentoo and gcc updating?

[John D.]

Stephen Williams wrote:

>On Tue, 2005-03-08 at 08:51 +0000, John D. wrote:
>  
>
>>Morning list,
>>
>>So, how would I work out which version of gcc I'm using with the system?
>>
>>Would it just be a case of "emerge gcc x.x.x" or is there other stuff 
>>that I'd have to get?
>>
>>    
>>
>
>If you change gcc you'll need to:
>
>emerge gcc-config
>
>then gcc-config -l will show what's available on your system and what
>you're using.
>
>To switch gcc versions:
>
>gcc-config n
>
>where n is the required version of gcc as listed by gcc-config -l
>
>  
>
>>and finally,
>>Would I have to recompile the system, if so, how would I do that?
>>    
>>
>
>Not necessarily. If you try to emerge some of the latest versions of
>certain packages and are getting a number of compile errors and
>failures, them compiling them with gcc 3.4.3 might help.
>
>You'll find that gcc-3.4.3 is still ~x86 masked, so to emerge it you'll
>need to add:
>
>sys-devel/gcc ~x86
>
>to your /etc/portage/package.keywords file.
>
>you'll also need:
>
>sys-devel/gcc ~x86
>sys-devel/gcc-config ~x86
>sys-libs/libstdc++-v3 ~x86
>sys-libs/glibc ~x86
>
>The easiest way to recompile your system is:
>
>emerge -e world
>
>This tells portage to consider your world package tree to be empty.
>You'll lose at least 48 hours to this, so make liberal use of the -p
>option before running any emerge commands for real.
>
>I find this method a good one for cutting edge gentoo installs:
>
>http://forums.gentoo.org/viewtopic.php?t=274968&highlight=developer
>

Ok, Cheers Steve, that gives me some more to read up on (and to keep 
your message in my "saved stuff" file for a reminder of what to do).

regards

John D.