GCC 5 compatibility problems: GCC 4.10?

[M. Edward (Ed) Borasky]

Yes, I'm currently blocked with a major package that compiles on GCC
4.9.1 but collapses in the link step on GCC 5.1.1. I've notified the
upstream and they're either fix it or tell me to abandon hope of
running on Fedora. ;-)

On Fri, May 8, 2015 at 9:10 AM, Paolo Bonzini <pbonzini at redhat.com> wrote:
> Hi all,
>
> I'm encountering a few problems with GCC 5 due to code that fails to
> work with GCC major releases above 4.  In particular, there are at least
> problems with the kernel and with Coverity.
>
> Unfortunately, downgrading to Fedora 21's GCC 4.9 is very hard in Fedora
> 22, unless you only care about the C compiler.  This is because the C++
> compiler wants a matching libstdc++, and most C++ packages need the GCC
> 5 libstdc++ (maybe because of the ABI changes, I don't know).
>
> Is it outrageous to ask for a "compatibility" GCC package that declares
> itself as 4.10?  This is similar to how kernel 3.0 was initially
> packaged as 2.6.40.  Or perhaps there is another possibility that I
> haven't thought of?
>
> Thanks,
>
> Paolo
>
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