[Reproducible-builds] Bug#824182: codeblocks: please make the build reproducible (timestamps)

[Fabian Wolff]

> So everything may be fine. If that's the case, sorry for the noise. (Then it would be nice to add a comment explaining this, for future readers.)

No, I think you are right: If SOURCE_DATE_EPOCH is not set, then this
is not going to work. I have tested the patch, but apparently only in
an environment where SOURCE_DATE_EPOCH gets set before the build
starts.

[1] says that setting and exporting SOURCE_DATE_EPOCH in debian/rules
is "a last resort to be avoided where possible", but I guess that if
we export with ?=, it should be fine.

Thanks for pointing this out!

--
Fabian

[1] https://wiki.debian.org/ReproducibleBuilds/TimestampsProposal#Setting_the_variable