[Bf-committers] Numpy integration

Eugenio Pignataro info at oscurart.com.ar
Tue May 1 15:23:39 CEST 2012

I tried changing  the follow line in cmakeList:
"${PYTHON_LIBPATH}/python${PYTHON_VERSION}/site-packages/numpy")  to
if(NOT EXISTS " /usr/include/numpy")

Works fine!

With "whereis numpy" I find numpy folder. It is in /usr/include/numpy 
(ubuntu 12.04)

Exist cmake variables?

Eugenio Pignataro
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On 05/01/2012 07:27 AM, Tobias Oelgarte wrote:
> Am 01.05.2012 08:01, schrieb Campbell Barton:
>> On Tue, May 1, 2012 at 10:20 AM, Dan Eicher<dan at trollwerks.org>   wrote:
>>> On Mon, Apr 30, 2012 at 8:16 AM, Eugenio Pignataro<info at oscurart.com.ar>   wrote:
>>>> I have my python 3.2.3  compiled from source in Ubuntu 12.04.
>>>> Cmake can't find numpy.
>>>> My folder : /usr/local/lib/python3.2/site-packages is empty.
>>>> What I need?
>>> Your OS most likely installs the python packages in /usr/lib while
>>> cmake is apparently looking for them in /usr/local/lib -- where I'd
>>> imagine you have cmake looking for your custom installed python.
>>> Probably just a matter of making (or fixing) a FindNUMPY.cmake module
>>> (which IMHO all libs should have *cough*ffmpeg*cough*)
>>> Dan
>> Dont think we should have a FindNUMPY.cmake, the location of python is
>> already found with FindPythonLibsUnix.cmake,
>> Numpy is being checked in the python installation which will be copied
>> on `make install`
>> if you have numpy in different python installation theres no guarantee
>> its going to work in the one thats found (if they are compiled with
>> different unicode width or ABI flags for eg, numpy won't load)
>> Its a bit annoying that people who built their own python now also
>> need to build their own numpy but this is something we can document
>> (setup.py args for a custom python path), and nowadays python3.2+numpy
>> should be available in most linux package repositories.
> I tried it with Ubuntu 12.04 that comes with Python 3.2. Numpy is
> optional, but if I install it from the package manager it is still not
> found, even so correctly installed.
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