Understood, thanks! I'll just ignore the warnings of the type ``` dpkg-shlibdeps: warning: debian/python-pytrilinos/usr/lib/python2.7/dist-packages/PyTrilinos/NOX/_Abstract.so contains an unresolvable reference to symbol PyString_FromFormat: it's probably a plugin. ``` then.
Cheers, Nico On Mon, Mar 17, 2014 at 6:28 PM, Jakub Wilk <[email protected]> wrote: > * Nico Schlömer <[email protected]>, 2014-03-17, 15:49: > >> I'm building a package with Python support and would like to reduce the >> number of warnings that dh_python2 gives me. >> >> One of them is >> >> public extension linked with libpython2.7 >> >> for a number of libraries. It is true that libpython2.7 is linked into >> them, >> >> $ readelf -d /path/to/_ML.so >> [...] >> 0x0000000000000001 (NEEDED) Shared library: >> [libpython2.7.so.1.0] >> [...] >> >> but when I don't, builds with "-Wl,-no-undefined" will fail. >> >> What is the reason for discouraging explicit links with libpython*? > > > The fundamental reason is that, except in unusual circumstances, this > library won't be used. Python Policy §2.1 reads: "some distributions link > extensions to libpython, but this is not the case in Debian as symbols might > as well be resolved by '/usr/bin/python<X>.<Y>' which is not linked to > libpython." > > In the past there used to be also a strong practical reason against linking > to libpython: every ELF dependency on libpython2.X was translated by > dpkg-shlibdeps to package dependency on python2.X, which typically meant > that your package ended up depending on multiple different Python versions. > But theses days there's only one supported Python (2.X) version, so this is > not such a big deal. > > BTW, there's a greater chance to meet a Python expert on debian-python@ than > here. :-P > > -- > Jakub Wilk > > > -- > To UNSUBSCRIBE, email to [email protected] > with a subject of "unsubscribe". Trouble? Contact > [email protected] > Archive: https://lists.debian.org/[email protected] > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/cak6z60cfgb00mn3saor8hgsaeksvbkla0efgndqqsk-vhrx...@mail.gmail.com
