[Buildroot] [PATCH v3 00/18] Reproducible builds

Jérôme Pouiller jezz at sysmic.org
Wed Nov 23 12:54:35 UTC 2016


Hello Thomas,

On Wednesday 23 November 2016 13:24:14 Thomas Petazzoni wrote:
> Hello,
> 
> On Wed, 23 Nov 2016 12:08:00 +0100, Jérôme Pouiller wrote:
> > This series try to continue work initiated by Gilles Chanteperdrix:
> >   http://lists.busybox.net/pipermail/buildroot/2016-April/thread.html#160064
> >   http://lists.busybox.net/pipermail/buildroot/2016-June/thread.html#163905
> > 
> > I dropped some patchs from original series because either:
> >   - I handled things differently (timestamps in images, support SOURCE_DATE_EPOCH
> >     in gcc, ...)
> >   - I didn't had time to test them them (sysroot, cpio, cdrkit, iso9660,...)
> >   - They doesn't seems necessary anymore (libtool, libgcrypt, libgpg-error, ...)
> > 
> > This version focuses on timestamps. It provide good enough results as soon as
> > OUTDIR and TOPDIR are the same. Indeed build path appear in plenty of files.
> > Only patch called "remove full path from .pyc" try to solve this issue. Another
> > big step could be done by removing rpaths from ELF generated with libtool.
> > 
> > Other thing known to break reproducibility:
> >   - use of lzop (it unconditionally include timestamps in result)
> >   - /!\ since we build our own toolchain and toolchain include BR2_FULL_VERSION,
> >     ccache is incompatible with reproducible
> > 
> > Since this feature is experimental I did not (yet) reported these
> > incompatibilities in menuconfig.
> 
> What are the changes between v2 and v3? There is no changelog, either
> in the cover letter nor in the patches themselves. It would be useful
> to have a changelog.

Oops, I have forgotten --notes. I resend soon.


-- 
Jérôme Pouiller, Sysmic
Embedded Linux specialist
http://www.sysmic.fr


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