[SciPy-user] scipy 0.7.0.dev4373 + atlas FAILED (failures=2, errors=12)

Johann Cohen-Tanugi cohen@slac.stanford....
Sun May 18 05:04:45 CDT 2008

ooops that happens to me once in a while. This was for David's eyes only ;)

Johann Cohen-Tanugi wrote:
> Salut!
> Super... je m'etais promis de tester ton setup numscons, et bien entendu 
> j'ai pas trouvé le temps ;) Une raison de plus pour essayer, mais le 
> marathon d'abord!
> Johann
> David Cournapeau wrote:
>> Johann Cohen-Tanugi wrote:
>>> well, I am not sure the doc marathon will deal with building scipy, at 
>>> least as a priority....
>> Yes, I agree. I think too many people try to build all the dependencies 
>> by themselves, and are surprised it is difficult. Frankly, I almost 
>> think it would be good to have less documentation, as an 
>> 'anti-incentive'. Building software which rely on binaries linked with 
>> several languages is just something inherently difficult and requires a 
>> lot of knowledge for the platform. The fact that ATLAS, BLAS and LAPACK 
>> use non standard build procedures certainly does not help either.
>>>  This is going to remain a very tough issue 
>>> because scipy depends on packages that are complex and hard to build. 
>>> Note that if you dont need smart lin. algebra you still have plenty of 
>>> good stuff in scipy despite this lapack failure. Maybe what would be 
>>> nice is for the scipy build process to clearly disable some specific 
>>> libs if something goes wrong and report it at the end of the build.
>> That's one of the reason I worked on numscons: in numscons, all 
>> dependencies are actually checked, contrary to numpy.distutils which 
>> just checks for the *presence* of a dependency. For example, if your 
>> atlas is somewhat buggy and cannot be linked, numscons detects it 
>> because before using atlas, it tries to build/run a small program which 
>> uses atlas, and this is logged.
>> cheers,
>> David
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