[gentoo-user] new version of gcc

[gentoo-user] new version of gcc

[Harry Putnam]

I noticed I've been masking gcc beyond version 4.3.2-r3, and have
forgotten why I had it masked.

I'm updating world right now, and wondered if I were to move up to
most recent gcc (4.4.2), which would be a 5 version jump, what I could
expect in the way of problems.

Would I need to re-emerge just about everything?

Re: [gentoo-user] new version of gcc

[Volker Armin Hemmann]

On Dienstag 03 November 2009, Harry Putnam wrote:
> I noticed I've been masking gcc beyond version 4.3.2-r3, and have
> forgotten why I had it masked.
> 
> I'm updating world right now, and wondered if I were to move up to
> most recent gcc (4.4.2), which would be a 5 version jump, what I could
> expect in the way of problems.
> 
> Would I need to re-emerge just about everything?
> 


http://lmgtfy.com/?q=gentoo+gcc+upgrade+guide&l=1

[gentoo-user] Re: new version of gcc

[Harry Putnam]

Volker Armin Hemmann <volkerarmin@googlemail.com> writes:

Harry asked:
>> Would I need to re-emerge just about everything?
>> 
>

Volker answered:

> http://lmgtfy.com/?q=gentoo+gcc+upgrade+guide&l=1

Quoted from http://www.gentoo.org/doc/en/gcc-upgrading.xml

,----
| To be completely safe that your system is in a sane state, you must
| rebuild the toolchain and then world to make use of the new compiler.
`----

I guess that is a yes.

Re: [gentoo-user] Re: new version of gcc

[Dale]

Harry Putnam wrote:
> Volker Armin Hemmann <volkerarmin@googlemail.com> writes:
>
> Harry asked:
>   
>>> Would I need to re-emerge just about everything?
>>>
>>>       
>
> Volker answered:
>
>   
>> http://lmgtfy.com/?q=gentoo+gcc+upgrade+guide&l=1
>>     
>
> Quoted from http://www.gentoo.org/doc/en/gcc-upgrading.xml
>
> ,----
> | To be completely safe that your system is in a sane state, you must
> | rebuild the toolchain and then world to make use of the new compiler.
> `----
>
> I guess that is a yes.
>
>
>
>   

That is a decent size upgrade.  I know I would rebuild everything but I
bet there are some that wouldn't.  Since you are planning a emerge world
anyway, why not.  It makes good sense.

By the way, I'm using that version of gcc and I have not had any
problems so far.  I'm x86.

Dale

:-)  :-)

[gentoo-user] Re: new version of gcc

[walt]

On 11/02/2009 03:20 PM, Harry Putnam wrote:
> I noticed I've been masking gcc beyond version 4.3.2-r3, and have
> forgotten why I had it masked.
> 
> I'm updating world right now, and wondered if I were to move up to
> most recent gcc (4.4.2), which would be a 5 version jump, what I could
> expect in the way of problems.
> 
> Would I need to re-emerge just about everything?

No, just the c++ programs, because they require the correct version of
libstdc++, and that library is part of the gcc package.  If the new gcc
package includes a new version of libstdc++ (not always) then existing
c++ apps will break because they can't find the old version of libstdc++.

Note that the old libstdc++ will be reincarnated if you use gcc-config
to switch back to the old version of gcc.

Clear as mud?

Re: [gentoo-user] new version of gcc

[Graham Murray]

Harry Putnam <reader@newsguy.com> writes:

> I noticed I've been masking gcc beyond version 4.3.2-r3, and have
> forgotten why I had it masked.
>
> I'm updating world right now, and wondered if I were to move up to
> most recent gcc (4.4.2), which would be a 5 version jump, what I could
> expect in the way of problems.
>
> Would I need to re-emerge just about everything?

No. There is no need to re-emerge when upgrading from gcc-4.3.x to
4.4.x, the ABIs did not change.

Re: [gentoo-user] new version of gcc

[Alex Schuster]

Harry Putnam writes:

> I noticed I've been masking gcc beyond version 4.3.2-r3, and have
> forgotten why I had it masked.
> 
> I'm updating world right now, and wondered if I were to move up to
> most recent gcc (4.4.2), which would be a 5 version jump, what I could
> expect in the way of problems.
> 
> Would I need to re-emerge just about everything?

The upgrade guide says yes, but this seems to be true only when the ABI 
changes, which happend for the last time when gcc 4.3 was introduced. I 
would not do the emerge -e thing.
Unless this new gcc has some cool features you want to use. Then you would 
change your CFLAGS, and either let the changes gradually drop in, or re-
emerge everything to make them happen at once.

What do you people think, are there fancy new and yet save CFLAGS that 
would improve our Gentoos? http://gcc.gnu.org/gcc-4.4/changes.html lists 
some improvements, to me they don't look too spectacular. Well, maybe 
apart from the graphite stuff 
(http://gcc.gnu.org/wiki/Graphite/PolyhedralInterface) which has been 
mentioned here. I don't know how much of an improvement this may be.

	Wonko

[gentoo-user] Re: new version of gcc

[Harry Putnam]

Nice... good advice all around.  Thanks posters.

Turns out I have bigger problems. ( I didn't upgrade gcc) but the
things I did upgrad in upgrade system followed by upgrade world.  Have
messed up mouse and keyboard in X.

But even that, is a lesser problem than my kernel build ends up in a
kernel panic (I did upgrade that)

But I will start a new thread about that.

Re: [gentoo-user] Re: new version of gcc

[Neil Bothwick]

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On Tue, 03 Nov 2009 14:03:24 -0600, Harry Putnam wrote:

> Turns out I have bigger problems. ( I didn't upgrade gcc) but the
> things I did upgrad in upgrade system followed by upgrade world.  Have
> messed up mouse and keyboard in X.

Did you follow the elog instructions about re-emerging drivers?


-- 
Neil Bothwick

Things are more like they are now than they ever were before.

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[gentoo-user] Re: new version of gcc

[Harry Putnam]

Neil Bothwick <neil@digimed.co.uk> writes:

> On Tue, 03 Nov 2009 14:03:24 -0600, Harry Putnam wrote:
>
>> Turns out I have bigger problems. ( I didn't upgrade gcc) but the
>> things I did upgrad in upgrade system followed by upgrade world.  Have
>> messed up mouse and keyboard in X.
>
> Did you follow the elog instructions about re-emerging drivers?

As I started trying to do something with this problem.. I first
re-emerged xorg-server... and then saw the message you refer too.

So getting that done now.

Re: [gentoo-user] Re: new version of gcc

[Marcus Wanner]

On 11/3/2009 3:03 PM, Harry Putnam wrote:
> Nice... good advice all around.  Thanks posters.
>
> Turns out I have bigger problems. ( I didn't upgrade gcc) but the
> things I did upgrad in upgrade system followed by upgrade world.  Have
> messed up mouse and keyboard in X.
>   
Try recompiling the evdev, mouse, and kbd drivers.

Marcus