Hi, On 30/12/16 00:50, Ghislain Vaillant wrote: > On Thu, 29 Dec 2016 00:30:58 +0000 James Cowgill <[email protected]> wrote: >> Control: severity -1 serious >> Control: clone -1 -2 >> Control: reassign -2 libfftw3-single3 3.3.5-1 >> Control: block -1 by -2 >> Control: retitle -2 libfftw3-single3: dependencies in shlibs file not tight >> enough >> >> Hi, >> >> On 29/12/16 00:02, Oleksandr Gavenko wrote: >>> Package: ardour >>> Version: 1:5.5.0~dfsg-1 >>> Severity: important >>> >>> Application is being crashing constantly with: >>> >>> bash# ardour5 >>> /usr/lib/ardour5/ardour-5.5.0: symbol lookup error: >>> /usr/lib/ardour5/ardour-5.5.0: undefined symbol: >>> fftwf_make_planner_thread_safe >> [...] >>> Versions of packages ardour depends on: >> [...] >>> ii libfftw3-single3 3.3.4-2 > > How come? Both testing and unstable have 3.3.5-1.
I don't think that matters. Partial upgrades should work (and
derivatives may rely on it).
>> This package is the problem. The fftwf_make_planner_thread_safe
>> function is only present in fftw3 3.3.5 (so upgrading your package
>> would fix this). fftw3 should generate a stricter dependency so that
>> this doesn't happen.
>
> libfftw3-dev depends on libfftw3_single3 (=${binary:Version}).
>
> How is that not strict enough?
I'm talking about the dependency from ardour to libfftw3_single3. The
dependency from libfftw3-dev doesn't matter here.
>> fftw3 maintainers: to fix this you either need to provide a symbols
>> file, or pass a suitable -V option to dh_makeshlibs so the shlibs file
>> contains a stricter dependency.
>
> Please be more explicit about the expected outcome (i.e. the stricter
> dependency you keep mentioning).
Please read policy 8.6 which describes most of this more fully.
The goal is for dpkg-shlibdeps to generate a dependency like
"libfftw3-single3 (>= 3.3.5)" for any package which uses
fftwf_make_planner_thread_safe. This is needed otherwise you may get a
linker error like ardour does, and it's is done by using the symbols or
shlibs systems as described in policy 8.6.
Thanks,
James
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