Bug#702460: openblas: does not revert atlas lapack alternative

[Sylvestre Ledru]

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On 06/03/2013 23:12, S￩bastien Villemot wrote:
> Le mercredi 06 mars 2013 ￠ 22:58 +0100, Julian Taylor a ￩crit :
>> On 06.03.2013 22:53, S￩bastien Villemot wrote:
>>> Le mercredi 06 mars 2013 ￠ 22:01 +0100, Julian Taylor a ￩crit
>>> :
>>>> Package: openblas Version: 0.1.1-6 Severity: normal
>>>> 
>>>> installing atlas and the openblas changes the alternative to
>>>> openblas as it has higher priority. but atlas also changes
>>>> the lapack alternative to its own. This leads to
>>>> usr/lib/liblapack.so having undefined references to atlas 
>>>> extensions
>>>> 
>>>> apt-get install libatlas3-base apt-get install
>>>> libopenblas-base ldd -r /usr/lib/liblapack.so.3 ... undefined
>>>> symbol: ATL_dpttrmm	(/usr/lib/liblapack.so.3)
>>> 
>>> You have either an old version of atlas, or you manually
>>> changed the alternative. The standard LAPACK has higher
>>> priority than ATLAS':
>>> 
>> 
>> I didn't install lapack at all, it uses the lapack in atlas. 
>> possibly openblas could depend on lapack to avoid this?
> 
> I don?t think this would make much sense.
I agree with S￩bastien. LAPACK is built upon BLAS and LAPACK is not
away used when doing linear algebra.

Sylvestre

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