[Rpm-maint] Reproducible packages

Nicolas Vigier boklm at mars-attacks.org
Fri Oct 25 13:48:37 UTC 2013

Any opinion on those two patches ?

On Wed, 25 Sep 2013, Nicolas Vigier wrote:

> Hello,
> While running successive "rpmbuild -bs" commands to create a source rpm,
> I noticed that it creates different rpm files each time, although the
> spec file and sources tarball are exactly the same. The reason is that
> the package includes tags such as BUILDTIME and COOKIE (build time +
> build host).
> I think that in some cases, it can be useful to be able to reproduce
> exact rpm file.
> Here is a proposal for two patches that add an option to set the build
> time and the build host to some fixed values, so you can reproduce the
> packages :
> - if %{_buildtime} is defined, then it is used as the build time
> - if %{_buildhost} is defined, then it is used as the build host
> With those patches applied, I can reproduce a source package with a
> command like this :
>  $ rpmbuild --define "_buildtime 1" --define "_buildhost something" -bs *.spec
> This is not enough to be able to reproduce binary packages, as the
> %{buildroot} files also need to have the same modification time in
> addition to same content, but I think it is a first step in that
> direction.
> Nicolas
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