The timestamp is in a comment which ccache can strip before looking up items in the cache; are you sure this is an issue?
On Mon, Jan 13, 2014 at 10:39 AM, Julian Taylor <jtaylor.deb...@googlemail.com> wrote: > Hi, > Cython currently places timestamps into all its generated C source files. > This may be ok for developers who normally only rebuild files they > changed anyway but it is a major annoyance for distribution packagers > who often have to rebuild software from scratch including re-cythonizing. > The reason this is annoying is that the adding of timestamps breaks > caching of compiler results e.g. with ccache. Due to the size of the > generated files recompiling the full sources normally takes a large > fraction of the build time of packages. > > I'm not sure what purpose the timestamps really serve, the version > number also included should be sufficient information in order to deduce > its origin. > > Would it be possible to change Cython to stop putting timestamps into > the source? > I would also be happy if the granularity is reduced from seconds to > hours/days or an non-default option to disable it (e.g. an environment > variable). > > > Additionally I think it might be useful to have a vendor id added to the > version number added to the source files. This would allow easier origin > tracking of files created with distribution patched versions of Cython. > E.g. if Debian patches 0.20 of Cython it puts in > > Generated by Cython 0.20 (Debian revision 3) > > Where the vendor id is added via a Distribution patch of the package and > none is emitted for upstream builds. > (CC. Debian maintainer of Cython for comments) > > Cheers, > Julian Taylor > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > https://mail.python.org/mailman/listinfo/cython-devel _______________________________________________ cython-devel mailing list cython-devel@python.org https://mail.python.org/mailman/listinfo/cython-devel
