Re: Building relax from source using scons and a different python interpretor -- May 02, 2013 - 22:09

Heh, that was actually easier than thought.

The Enthought distribution came along with scons installed.

/software/python-enthought-dis/epd-7.3-2-rh5-x86_64/bin/scons

So no problem building.

And then making this shell file, to use the enthought: relax2

#!/software/python-enthought-dis/epd-7.3-2-rh5-x86_64/bin/python2.7

import relax

relax.start(profile_flag=False)

Best

Troels

Troels Emtekær Linnet

Ved kløvermarken 9, 1.th

2300 København S
Mobil: +45 60210234

2013/5/2 Edward d'Auvergne <edward@xxxxxxxxxxxxx>

Hi Troels,

In the future, for such questions I would recommend asking on the
relax development mailing list (relax-devel att gna.org).  The answer
is complicated as SCons has problems with multiple Python
installations.  You have to have scons installed for the Python
version you are targeting and no other SCons versions present.  I have
managed to get it to work, but the scons must be run with the correct
Python version and also then separately find the correct Python
version for compilations (these are unfortunately not coupled in
SCons).  There is one cheating way and that is to use the
'devel_scripts/manual_c_module.py' script, just modifying it to point
your Python version.  This script is mainly to get around these bad
design issues in SCons for when multiple Python versions are present,
as I have lots of different Python versions compiled into a special
directory for testing relax (every version from 1.0 to 3.3) and SCons
really cannot handle this.

As for using Enthought Python, I don't know how well relax will run in
such an environment.  It'll be interesting to see what happens.

Regards,

Edward

On 2 May 2013 17:26, Troels Emtekær Linnet <tlinnet@xxxxxxxxx> wrote:
> Dear Relax users.
>
> I am trying to build relax, from source, using scons.
>
> We have the python enthought distribution installed, to solve most of our
> dependencies,
> and we install packages here, so each computer can use this shared
> installation.
>
> How I can I tell scons, to use python2.7 to build relax?
> I think it tries to use my local python installation, but here I have not
> installed
> minfx, ,wxPython.
>
> [tlinnet@tomat ~/software]$ cd relax-trunk/
> [tlinnet@tomat relax-trunk]$ scons
> scons: Reading SConscript files ...
> The dependency 'minfx' has not been installed (see
> https://gna.org/projects/minfx/).
> [tlinnet@tomat relax-trunk]$ python2.7
> Enthought Python Distribution -- www.enthought.com
> Version: 7.3-2 (64-bit)
>
> Python 2.7.3 |EPD 7.3-2 (64-bit)| (default, Apr 11 2012, 17:52:16)
> [GCC 4.1.2 20080704 (Red Hat 4.1.2-44)] on linux2
> Type "credits", "demo" or "enthought" for more information.
>>>> import minfx
>>>> import readline
>>>> import wx
>>>> import numpy
>>>> import scipy
>
> Best
> Troels
>
>
> Troels Emtekær Linnet
> Ved kløvermarken 9, 1.th
> 2300 København S
> Mobil: +45 60210234
>

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