[Pkg-opencl-devel] adding more virtual packages libopencl-1.X-1 ?

[Vincent Danjean]

Le 24/07/2013 08:46, Vincent Danjean a écrit :
>> * each vendor-libopencl1 package adds
>>     Provides: libopencl-1.1-1, libopencl-1.2-1, ...
>>   for *all* supported versions of the standard
>>   (the name here is libopencl-${standardversion}-${soversion})
>>   (i.e. nvidia only 1.1, amd and ocl-icd both 1.1 and 1.2)
>>   (we probably don't need 1.0, do we?)
>>
>> a) every package needing something newer than the baseline (which
>> currently is 1.1) manually adds Depends: libopencl-X.Y-1
>> that would make apt choose a sufficient alternative
>>
>> and/or
>> b) the shlibs files add a dependency on libopencl-X.Y-1 (where X.Y is
>> the newest standard supported by this vendor implementation) instead of
>> libopencl1.
> 
> The b approach would be more transparent for users. [and the a option
> can be used for applications that require a specific OpenCL version
> that is not reflected by their use of symbols].
> 
>   I will try to implement it quickly in ocl-icd.

ocl-icd on my personnal repo has a symbol file with these new virtual
packages: http://people.debian.org/~vdanjean/debian/pool/main/o/ocl-icd/

We should try to rebuild OpenCL applications (pyopencl, ...) to see if
new dependencies are correctly automatically pulled. I do not have time
to check this now (will do in a few hours if nobody does it before).


If it works, we should:
- decide the proper name of virtual packages. When updating ocl-icd,
  I was thinking that libopencl-1.1-1 also has a meaning: it is an "ABI"
  for the libopencl1 library. So, perhaps: libopencl1-abi-1.1 and
  libopencl1-abi-1.2
- fix all packages (the one providing libopencl1)
- ask for a rebuild of reverse dependencies

  Regards,
    Vincent

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