F22 System Wide Change: GCC5

[Vít Ondruch]

Dne 14.1.2015 v 12:53 Jaroslav Reznik napsal(a):
> = Proposed System Wide Change: GCC5 =
> https://fedoraproject.org/wiki/Changes/GCC5
>
> Change owner(s):  Jakub Jelínek <jakub at redhat.com>
>
> Switch GCC in Fedora 22 to 5.x.y, rebuild all packages with it.
>
> == Detailed Description ==
> GCC 5 is currently in stage3, but in 3 days will move to stage4, in prerelease 
> state with only regression bugfixes and documentation fixes allowed. The release 
> will happen probably in the first half of April. We are working on scratch gcc 
> rpms and will perform a test mass rebuild. Other distributions have performed 
> test mass rebuilds already. 
>
> == Scope ==
> All packages should be rebuilt with the new gcc once it hits f22.
>
> * Proposal owners: Build gcc in f22, rebuild packages that have direct 
> dependencies on exact gcc version (libtool, llvm, gcc-python-plugin).
>
> * Other developers: First few days/weeks just voluntary rebuilds using the new 
> system gcc, if things fail, look at http://gcc.gnu.org/gcc-5/porting_to.html 
> and fix bugs in packages or, if there is a gcc bug or suspected gcc bug, 
> analyze and report.

Ah, few days/weeks. Now I really can't see how this will fit into schedule.


Vít


>  
>
> * Release engineering: Organize a mass rebuild 
> * Policies and guidelines: No policies need to be changed 
>
> == Contingency Plan ==
> If bugs are discovered, I'd appreciate help from the package owners in 
> preparing self-contained testcases to speed up analysis and fixing the bugs. 
> Don't have time to debug issues in 12000+ packages, especially when in many 
> cases it could be caused by undefined code in the packages etc. I don't expect 
> we'll have to fall back to the older gcc, we've never had to do it in the 
> past, but worst case we can mass rebuild everything with older gcc again.
>
> * Contingency mechanism: Revert to older gcc, mass rebuild everything again
> * Contingency deadline: Before release
> * Blocks release? Yes
> * Blocks product? No 
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