[Reproducible-builds] Trying to fix random_buildpath_by_octave

[Reiner Herrmann]

Hi Rafael,

On Sun, Oct 25, 2015 at 09:09:54PM +0100, Rafael Laboissiere wrote:
> I am trying to fix the issue identified as random_buildpath_by_octave [1],
> which affects several packages maintained by the Debian Octave Group [2].

Thanks for looking into it!

> I need to know how the "variation of the build id", mentioned in issue
> description, is detected.  Is it done from the build log?

If you look at the page of an affected package [1], you can find a diff
of the logs between both build [2]. There you won't find the build id,
but the cause of the binary variation:

> -mkdir (/tmp/oct-RnOahg)
> -Copying directory (., /tmp/oct-RnOahg)
> -make[1]: Entering directory '/tmp/oct-RnOahg/src'
> +mkdir (/tmp/oct-KZzyZE)
> +Copying directory (., /tmp/oct-KZzyZE)
> +make[1]: Entering directory '/tmp/oct-KZzyZE/src'

In the diff of the compiled binary packages [3] you can then see that the
"Build ID" is differing:

> │   │   │   │   │ -    Build ID: 5f46757a2de5cce2303368e1b8490fabc2278a5f
> │   │   │   │   │ +    Build ID: fed8cdbc88dc2ce89aecf63b89d0e7083d987aa0

I hope this helps you.

Kind regards,
 Reiner

[1]: https://reproducible.debian.net/rb-pkg/unstable/amd64/octave-control.html
[2]: https://reproducible.debian.net/logdiffs/unstable/amd64/octave-control_2.8.5-1.diff.gz
[3]: https://reproducible.debian.net/dbdtxt/unstable/amd64/octave-control_2.8.5-1.debbindiff.txt

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