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Re: [Xen-devel] [PATCH] fix qemu building with older make

On Tue, 2014-07-29 at 17:13 +0100, Jan Beulich wrote:
> >>> On 29.07.14 at 17:43, <Ian.Jackson@xxxxxxxxxxxxx> wrote:
> > Jan Beulich writes ("Re: [PATCH] fix qemu building with older make"):
> >> On 29.07.14 at 15:57, <Ian.Jackson@xxxxxxxxxxxxx> wrote:
> >> > (b) have some kind of
> >> > time limit on how long we need to support make 3.80 ?
> >> > 
> >> > 3.81 was released upstream over eight years ago in April 2006.
> >> 
> >> I know, but I also know there's going to be a few more years where
> >> for my day-to-day work SLE10 (coming with make 3.80) is the lowest
> >> common denominator in order to be able to test backports there.
> >> And RHEL5, iirc released at about the same time, was also quite
> >> recently considered a platform desirable to continue to support.
> > 
> > RHEL5 was released in March 2007, 11 months after make 3.81 was
> > released upstream.  Furthermore it is seven years old.  SLES10 was
> > released in June 2006, and is therefore eight years old.  People refer
> > to Debian stable as `Debian stale' but frankly this is ridiculous.
> > 
> > At the very least can we put some kind of bound on this ?
> > 
> > How about we `compromise' on the following rule: we will feel
> > completely entitled to delete any build and tools compatibility code
> > for anything which was superseded upstream more than a decade ago.
> I'm personally not in favor of this, but if a reasonably large majority
> would want a rule like this, I'll have to try and live with it. My scope
> for deprecation would be more towards such relatively wide spread
> distros going completely out of service (i.e. in the case of SLES not
> just general support [which happened about a year ago], but also
> long-term/extended support [which I think is scheduled for like 12
> or 13 years after general availability]).

(I've got a sense of Deja Vu, sorry if we've been through this

You aren't expected to support users installing Xen 4.5 onto SLE10
though, surely? After general support and into long term support even?.

For development purposes across multiple trees do chroot+bind mounts or
VMs not suffice?

I think our backstop for dependencies for the dom0 bits should be the
version of things where we might reasonably expect a new user to deploy
a new version of upstream Xen from scratch on. I find it hard to imagine
anyone doing that on Debian 6.0, SLE10 or RHEL5 these days rather than
choosing Debian 7.0, SLE11 or RHEL6.


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