[gentoo-user] Re: testing system + gcc-5.2 anyone?

[Holger Hoffstätte]

On Wed, 12 Aug 2015 05:18:54 -0400, covici wrote:

> Holger Hoffstätte wrote:
>
>> On Tue, 11 Aug 2015 12:01:50 +0200, Helmut Jarausch wrote:
>>
>> > On 08/10/2015 05:29:04 PM, James wrote:
>> >> Hello,
>> >>
>> >> Just for grins, I'm thinking about installing a gentoo system that
>> >> is (~) testing and newer codes and setting gcc-.5.2 as the default
>> >> compiler. Anyone doing this yet? Will it mostly work or should I
>> >> wait? Workstation with lxqt-0.9x.
>> >
>> > I don't use lxqt here, but ...
>> > I'm using gcc-5.2.0 very successfully here. I am not aware of a
>> > single package which doesn't compile with this version.
>> > And the kernel itself compiles just fine (currentlich running
>> > 4.2.0-rc6 compiled with gcc-5.2.0)
>>
>> +1
>>
>> I just updated all my ~amd64 multilib systems to 5.2 and everything
>> still works without a hitch, including acroread & skype. 4.9.3 is gone.
>> :)
>>
>> > One caveat though when upgrading a system which has been built with
>> > gcc-x for x < 5.
>> > The (pure) C++ libraries aren't compatible with older versions so
>> > that all packages which link to libstdc++ or libsupc++ have to be
>> > rebuilt. Packages which just use C aren't effected at all.
>>
>> Interestingly I didn't have to rebuild anything (yet), which I find
>> surprising given the changes in the ABI and std::string. I expected at
>> least a few problems,
>> but so far - nothing.
>
> I can't even emerge gcc-5.2.0 because of missing keyword, as of a sync
> of yesterday, so what is happening with that?

The ebuild currently doesn't have any keywords, so enable them:

$grep gcc /etc/portage/profile/package.accept_keywords
>=sys-devel/gcc-5.2.0 ** (or your specific arch instead of **)

Enjoy. :)

-h