There is something in the build mechanism that is triggering Sage to build
LAPACK despite the presence of the library and a path to the library.
Should be independent of ATLAS, no?  Any insight into what that could be?

On Wed, May 23, 2012 at 10:46 PM, Volker Braun <[email protected]>wrote:

> ATLAS 3.9.74 will probably work, I haven't tried to plug it into Sage yet
> but I think it has a good chance. Build system for atlas+lapack totally
> changed so I'm not going to hold my breath that it'll work with your system
> libraries...
>
>
>
>
> On Wednesday, May 23, 2012 11:29:38 PM UTC-4, Keshav Kini wrote:
>>
>> Melvin <[email protected]> writes:
>> > I build Sage for the first time--version 5.0.  Everything went OK.  I
>> set a few
>> > environment variables namely SAGE_FORTRAN, SAGE_FORTRAN_LIB, SAGE64,
>> and
>> > SAGE_ATLAS_LIB.  I was unhappy that the first step was to build LAPACK
>> though I
>> > had specified where the ATLAS library and thus liblapack.a resides.
>>  The
>> > install picked up the correct version of ATLAS, 3.9.74, on my system.
>>
>> Well, this doesn't answer your question, but to quote Volker Braun, who
>> works with the ATLAS package for Sage (quote is from
>> http://article.gmane.org/**gmane.comp.mathematics.sage.**devel/59092<http://article.gmane.org/gmane.comp.mathematics.sage.devel/59092>)
>>  :
>>
>> > Thats crazy, atlas 3.9.23 isn't something that you want to use for
>> computation.
>> > For the record, Sage doesn't work with the atlas development series
>> (3.9.x) at
>> > this point. Though I think more recent atlas devel versions are getting
>> there.
>>
>> So maybe it is not such a good idea to use your system ATLAS anyway...
>>
>> -Keshav
>>
>> ----
>> Join us in #sagemath on irc.freenode.net !
>>
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