F22 System Wide Change: GCC5

[Peter Robinson]

On Wed, Jan 14, 2015 at 5:51 PM, Miloslav Trmač <mitr at redhat.com> wrote:
>> * Contingency mechanism: Revert to older gcc, mass rebuild everything again
>> * Contingency deadline: Before release
>
> This is an invasive contingency mechanism, requiring retesting a lot of functionality; the contingency deadline for this (i.e. when we need to be comfortable that the revert will not be needed, should certainly be at the usual beta freeze at the latest, if not earlier.  Invoking this contingency mechanism “before release”, say during the GA RC phase, would really not be feasible without a massive slip.

Any revert of this would mean another mass rebuild similar to what was
needed in F-21 which will guarantee a slip of probably two weeks, late
in the beta phase this becomes more of an issue. 18K packages do take
some time to rebuild, tag etc.

Peter