Re: [PATCH 0/2] Multi-threaded RPM support

[Joshua Lock <joshua.g.lock@linux.intel.com>]

On Mon, 2017-06-05 at 15:14 +0300, Alexander Kanavin wrote:
> On 06/04/2017 05:15 PM, Richard Purdie wrote:
> 
> > https://autobuilder.yoctoproject.org/main/builders/nightly-x86/buil
> > ds/1
> > 163/steps/BuildImages/logs/stdio
> > 
> > https://autobuilder.yoctoproject.org/main/builders/nightly-x86-64/b
> > uild
> > s/1203/steps/BuildImages/logs/stdio
> > 
> > https://autobuilder.yoctoproject.org/main/builders/nightly-ipk/buil
> > ds/1
> > 112/steps/BuildImages/logs/stdio
> > 
> > I suspect the same issue causing failures in multiple places.
> 
> The patches as they are now require that the C compiler on the host
> is 
> recent; specifically that it defaults to C11 mode. I'm not sure when
> GCC 
> made the switch, but it works that way with GCC 6.3.0.
> 
> In any case, I'll rework the patches to use openmp, as requested by 
> upstream - this may however cause a different set of compatibility 
> problems with older GCC versions. What are the oldest host compiler 
> versions/distro versions that we still need to support in master?

On the Yocto Autobuilder clusters we have:
* centos7 / gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-11)
* debian8 / gcc (Debian 4.9.2-10) 4.9.2
* debian-testing / gcc (Debian 6.3.0-14) 6.3.0 20170415
* fedora24 / gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
* fedora25 / gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
* opensuse132 / gcc (SUSE Linux) 4.8.3 20140627 [gcc-4_8-branch
revision 212064]
* opensuse422 / gcc (SUSE Linux) 4.8.5
* ubuntu1604 / gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
* ubuntu1610 / gcc (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005

We are aiming to replace openSUSE 13.2 (as it was discontinued in
January of this year) but CentOS 7 has a good long lifetime ahead of
it, therefore supporting it and RHEL 7 will require gcc 4.8.5 support.

Joshua