Hi, This week I have continued working on some issues related to packages using C timestamp macros. I have sent one patch:
- https://reproducible.debian.net/rb-pkg/unstable/amd64/apt-dater.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=789648 I have also written a patch for apache2 but it's on hold: - https://reproducible.debian.net/rb-pkg/unstable/amd64/apache2.html The reason I haven't submitted it is because of a discussion in irc. Currently there are 490 packages affected by timestamps from C macro. Patching them all one by one is a tedious and slow task, so we discussed on irc possible solutions. In the reproducible builds project there has been an idea for standardizing toolchain packages that deal with timestamps. The idea is to export a variable called SOURCE_DATE_EPOCH with the latests debian/changelog entry in Unix time. This variable can be seen by any package to modify its behavior: instead of embedding the current time/date, embed the exported date/time. A patch with this solution has already been written and accepted in help2man. There are many candidate packages that could benefit from this patch (for instances, documentation generation tools). So we talked about the idea of implementing this solution in GCC, so that when the variable SOURCE_DATE_EPOCH, the macros __DATE__, __TIME__ and __TIMESTAMP__ use the exported timestamp rather than local compilation time. I have started working on such patch. I have also worked on a package with the issue of timestamps in gzip headers: - https://reproducible.debian.net/rb-pkg/unstable/amd64/djvulibre.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790371 And on packages that create or modify png files and embed a timestamp in them: - https://reproducible.debian.net/rb-pkg/unstable/amd64/qrfcview.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=789963 - https://reproducible.debian.net/rb-pkg/unstable/amd64/xtel.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=789965 (depends on fix in xutils-dev) - https://reproducible.debian.net/rb-pkg/unstable/amd64/oxygen-icons.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790374 One of the previous packages embedded timestamps in gzip headers because it was using a tool that defined such behavior, I patched the tool as well: - https://reproducible.debian.net/rb-pkg/unstable/amd64/xutils-dev.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=789964 (fixes xtel) Finally, I have added some information in the reproducible builds wiki regarding the issue timestamps_from_cpp_macros and a possible solution that doesn't remove the timestamps macros: - https://wiki.debian.org/ReproducibleBuilds/TimestampsFromCPPMacros Regards, -- Dhole
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