Installation problems after OASYS1-SRW==1.0.52 (GLIBC_2.27) on Ubuntu 16 about oasys-installation-scripts

[lucarebuffi]

It is useful, indeed. Thanks for publishing this note.

The new version of SRW libraries has been compiled with Ubuntu 18.04 LTS, recently downloaded. I compiled them for both miniconda and python.org distributions. Probably something changed in the meantime, since the default python 3 installed does not show some compatibility issues we found in the past, asking us to use miniconda3.

I suggest to remove the folder miniconda3 and install from scratch Oasys by using the VirtualEnvironment scripts, that let you use the Python.org python.

[wcgrizolli]

@SergioLordano said:

The solution was to uninstall all of them and install numpy by conda, only.

I noted something that may be related to the same problem. The line:

oasys-installation-scripts/Release_1.1/Miniconda/install_oasys1_MC.sh

Line 35 in dabda10

$HOME/miniconda3/bin/python3 -m pip install numpy

would better be

$HOME/miniconda3/bin/conda install numpy=XXX

where XXX is the desired version for numpy.

This may solve the conflicts of different versions of numpy.

[lucarebuffi]

I will do it. Anyway, there is not a desired version of numpy. It should be the last. I repeat: use the virtual environment with standard python.org python!

[lucarebuffi]

Fixed

[SergioLordano]

Hello Luca,
I am sorry to bother you again about this, but there is also a small problem with the Virtual Environment installation. It can be easily fixed, but beginners may spend a lot of time on it. When we call the script start_oasys_VE.sh, it starts OASYS but does not load ShadowOui widgets, because it fails to import xraylib. If you look the code:

#!/bin/bash
source ~/oasys1env/bin/activate
#source `find /home -name "start_oasys.sh" -printf "%h"`/oasys1env/bin/activate
export LD_LIBRARY_PATH=/home/oasys/oasys1env/lib/xraylib 
export DYLD_LIBRARY_PATH=/home/oasys1env/lib/xraylib
python -m oasys.canvas -l4 --force-discovery

it is easy to see why it does not find xraylib library: in many computers, the home path is not simply /home. So It could be fixed by using:

export LD_LIBRARY_PATH=~/oasys1env/lib/xraylib 
export DYLD_LIBRARY_PATH=~/oasys1env/lib/xraylib

[lucarebuffi]

That was just a (outrageous) BUG. Thank you for your precious feedback!