The GNU C Library will be rebased in F21 to match glibc 2.20.

[Dan Horák]

On Thu, 31 Jul 2014 19:19:49 +0100
"Richard W.M. Jones" <rjones at redhat.com> wrote:

> On Thu, Jul 31, 2014 at 01:41:25PM -0400, Josh Boyer wrote:
> > On Thu, Jul 31, 2014 at 12:34 PM, Siddhesh Poyarekar
> > > There is however one change that the s/390
> > > folks will find painful - s/390 broke ABI in 2.19 without a proper
> > > justification and that is now going to be reverted in 2.20 (and in
> > > 2.19, but we don't really care about 2.19 right now).
> > 
> > To expand on this just a bit, the s/390 ABI break was done by the
> > s/390 glibc port maintainers and was done intentionally.  This
> > wasn't a "oops, we accidentally broke the ABI" bug.  It was
> > something the s/390 maintainers decided was of minimal concern and
> > it turns out they were wrong.  In my experience, glibc goes above
> > and beyond maintaining their software.  This s/390 incident is an
> > anomaly in an otherwise very controlled and well-run software
> > project.
> 
> (FYI) LWN article on this subject:
> 
> https://lwn.net/Articles/605607/

yeah, it can happen, the hardest thing was to come up with a solution
that would allow to follow the regular Rawhide build process using
koji-shadow.


		Dan