[Slackbuilds-users] ORFEO Toolbox (OTB)

Kevin McCormick kev4321 at fastmail.fm
Mon Aug 13 12:51:26 UTC 2018

I did "removepkg cblas" and then "python" and ">> import numpy" and
there were no complaints.  So I did sbopkg -i cblas to reinstall it. 
Now I think I should remove numpy and reinstall it to get the blas
routines referenced.


On 08/11/2018 04:51 PM, Benjamin Trigona-Harany wrote:
> I admit that I also do not fully understand all the nuances of the
> blas/cblas/OpenBLAS/atlas options (not to mention lapack). My guess is
> that if numpy was built against cblas and then cblas wasn't available
> when OTB was compiled, it could cause such an error.
> If cblas is uninstalled, can you import numpy in the Python REPL?
> On August 11, 2018 8:47:54 PM UTC, Kevin McCormick
> <kev4321 at fastmail.fm> wrote:
>     I don't think cblas was previously installed.  However, my
>     sbopkg-pkg-log does have references to cblas in numpy, pygsl, and
>     other places. I suppose it is possible that something unique to my
>     computer triggered the need for cblas.  OTB was part of a long
>     sbopkg queuefile and OpenBLAS was higher up on the list.The "blas"
>     packages are confusing to me, but I guess the alternate blas
>     routines can be used even though the generic blas is installed.  I
>     was trying to get qgis and dependencies/options installed, which
>     did work out pretty well except for libaspacialite not linking to
>     postgis.
>     Thanks
>     On 08/11/2018 01:44 PM, Benjamin Trigona-Harany wrote:
>>     On Thursday, 9 August 2018 10:43:25 PDT Kevin McCormick wrote:
>>>     Build failed for OTB:
>>>     OTB 6.6.0 undefined reference to `cblas_dgemm'
>>>     After installing "cblas" (in addition to the other requirements) the
>>>     build was successful.  The requirements list "blas" but not "cblas."
>>>     I did not set the MONTEVERDI=ON switch.
>>>     Thanks
>>     I have not been able to recreate this issue. OTB builds fine on Slackware 64 
>>     14.2 with blas and not cblas installed. Is it possible you are linking against 
>>     another of OTB's dependencies that were previously built when cblas was 
>>     installed?
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity. 

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