Bug#839224: python-systemd: "undefined symbol" error on armhf

Michael Biebl biebl at debian.org
Fri Sep 30 14:28:46 BST 2016

Am 30.09.2016 um 14:54 schrieb Zbigniew Jędrzejewski-Szmek:
> On Fri, Sep 30, 2016 at 02:24:57PM +0200, Michael Biebl wrote:
>> Am 30.09.2016 um 12:39 schrieb Patrick Scharrenberg:
>>> Package: python-systemd
>>> Version: 232-1~bpo8+1
>>> Severity: normal
>>> Dear Maintainer,
>>> when trying to import JournalHandler on arm architecture I get the following error:
>>>   root at raspbian:~# python -c "from systemd.journal import JournalHandler"
>>>   Traceback (most recent call last):
>>>     File "<string>", line 1, in <module>
>>>     File "/usr/lib/python2.7/dist-packages/systemd/journal.py", line 34, in <module>
>>>       from ._reader import (_Reader, NOP, APPEND, INVALIDATE,
>>>   ImportError: /usr/lib/python2.7/dist-packages/systemd/_reader.arm-linux-gnueabihf.so: undefined symbol: sd_journal_open_files_fd
>> ...
>>> Versions of packages python-systemd depends on:
>>> ii  libc6        2.19-18+deb8u6
>>> ii  libsystemd0  215-17+deb8u5
>> I guess we should bump the Build-Depends on libsystemd-dev to (>= 230)
>> to ensure we build against a version with the new API. The version in
>> stable was built against v215. Maybe we should build it against the bpo
>> version.
>> I wonder if building against older versions, like v215, is supposed to
>> work. Zbigniew?
> There's is configuration code (based on libsystemd version as reported by
> pkg-config), which decides which function calls can be used. It's most
> likely that the libsystemd headers on the system on which compilation was
> done were newer than the library on the target system. Other possibility
> is that the configuration code is wrong. In the second case, there would
> be warnings emitted during build that the function is not declared. It
> would be interesting to see the logs.

The build logs are here:

They use the systemd version from jessie, i.e. v215.

Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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