Building python JSBSim from source

[sr71684]

I am attempting to build the python jsbsim libraries from source. So far I have:

1. Cloned the latest verison of the repo
2. Followed the build instructions as listed here.

mkdir build
cd build
cmake ..
make

Side note: I don't think the build flag cmake -DINSTALL_PYTHON_MODULE=ON .. listed in the documentation is valid, so I used this sequence of commands:

cmake -DBUILD_PYTHON_MODULE=ON -DINSTALL_JSBSIM_PYTHON_MODULE=ON ..
make
make install

Which seems to run fine, however, when I try to import JSBSim from a python script like this

import jsbsim

the following error is obtained:

Traceback (most recent call last):
  File "/home/user/dev/project/src/test_import.py", line 11, in <module>
    import jsbsim
ImportError: /home/user/anaconda3/envs/randomenv/lib/python3.9/site-packages/jsbsim.cpython-39-x86_64-linux-gnu.so: undefined symbol: _ZSt28__throw_bad_array_new_lengthv

Things I have tried:

• Giving the generated jsbsim.cpython-39-x86_64-linux-gnu.so file execute permissions with chmod +x.
• Double checking I am building the jsbsim python libraries and later attempting to import them from inside the same anaconda enviornment.

Things I think might be causing the issue:

• Perhaps I'm using the wrong compiler version?

Environment:

• OS: Ubuntu 21.10
• JSBSim version: latest
• Language if applicable: Python, c++

[bcoconni]

This topic has been moved to JSBSim Discussions as per the issue template statement: Issues that are neither bug reports or feature requests will be transferred to [Discussions](https://github.com/JSBSim-Team/jsbsim/discussions) by the team and the issue will be locked and closed..

Support for this topic will therefore continue within this discussion. Thanks for your understanding.

[bcoconni]

@sr71684, your support requests have been moved from Issues to Discussions several times now despite the explicit message that is displayed when an issue is created. Please stop doing that, thanks.