[cfe-dev] -O2 requires GLIBCXX_3.4.9?

[Mohamed Bana]

Konstantin, hi,

So why can't I run it on a system with an older version of glibc?  This
very confusing.  Clearly, -O2 wants a newer version of glibc.

 —Mohamed


On 14 September 2012 11:17, Konstantin Tokarev <annulen at yandex.ru> wrote:

>
>
> 14.09.2012, 12:42, "Mohamed Bana" <mohamed at bana.org.uk>:
> > Nikos Chantziaras <realnc at ...> writes:
> >
> >>  glibc is generally not backwards compatible.  You cannot build on a new
> >>  version and have a guarantee that it runs on older ones.  If you want
> >>  that, you should build against an older glibc.
> >
> > Does anyone know how to solve this issue?  I just need to it use the
> same glibc
> > that is being used when -O0 is specified.
>
> You are using the same glibc in both cases actually. Just with different
> internal defines.
>
> --
> Regards,
> Konstantin
>
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