[OE-core] [PATCH 0/4] Reproducible binaries

[Martin Jansa]

On Wed, Apr 26, 2017 at 07:52:02PM +0200, Martin Jansa wrote:
> What about passing the seed value (currently created based on last commit
> in repo you're building from - which doesn't need to be oe-core repository
> right?) to make it easier for people to pass whatever value works for them?
> even some constant value in DISTRO config.

It looks like some words disappeared when I clicked the send button.
Well I don't have any buttons in mutt so that might be the reason.

I wasnted to say "passing the seed value" through some separate variable
which is easy to override from somewhere else.

e.g.
export PRELINK_TIMESTAMP=`git log -1 --pretty=%ct `

in image-prelink.bbclass:prelink_image() is a bit difficult to override.

> 
> On Wed, Apr 26, 2017 at 6:43 PM, Bystricky, Juro <juro.bystricky at intel.com>
> wrote:
> 
> >
> > > But not for 2 different builds with slightly modified metadata (e.g.
> > > just because top commit is different in whatever build repository you're
> > > running from even when it doesn't have any effect in your image), right?
> > >
> >
> > This may be addressed in the future. Presently, the goal is to ensure that
> > if we
> > use identical repositories we get identical results. This should not depend
> > on the time/date, build folder or even Linux distro. By identical results
> > I mean binary identical comparison of the resulting "deploy" folders.
> > (images, packages, licenses). So for example, there should be no binary
> > differences
> > between the two images of core-image-minimal.rootfs.ext4.
> > In your case (slightly different repos), the difference would be presented
> > as different time stamps for /etc/version and /etc/timestamp only.
> >
> >
> > > So it doesn't fix the files-in-image.txt differences as described in:
> > > https://bugzilla.yoctoproject.org/show_bug.cgi?id=5866
> > >
> >
> > Eventually it will. There is still ways to go and this patch set is just
> > the first
> > kick at the can.
> >
> >
> >

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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