how to create a python package with a dll/so file ?

[hbadi]

Hello,

I've been reading some stuffs last days about python module packaging, it's quite a mess to understand something clearly since there's a lot of package management tools like setuptools.

I have my own cmake file to generate my dynamic library file. I can't see how to write a very basic setup.py in which i only specify the dynamic library file to use. I found many examples/tutorials in which Extension/pybind11 python modules are used through the explicit definition of source files, but in my case i want to compile the dynlib by my own. Is there any simple setup.py to do the job ?

For example under windows i tried to write these setup.py but the dll is not copied...i only get the .egg file

from setuptools import setup, Extension
setup(
    name='mymodule',
    version='1.0',
    description='A Python package C++ (PyBind11)',
    data_files=[('lib\\site-packages\\', ["mymodule.dll"])],
)

python setup.py install

The website https://pybind11.readthedocs.io/en/stable/compiling.html do explain a lot of things but only where there's a list of cpp files, which is not my case that's why i manage the compiling using cmake.
I can use ext_modules = [Extension('pysparselizard', sources=[''])] but source files are needed.

It's not very clear...

Thansk for your help.

[LivelyLiz]

Did you find a solution? I am trying to find out the same thing but also mainly find resources for doing this with .py files...

[matte86]

I have a similar setup where I build my project with conan and cmake. The project is structured in a way so that I have:

• A shared cpp library
• A shared library containing the bindings with Python (as output of the pybind11 binding build process)

The best process I managed to implement so far is to build everythin from conan and cmake and then use the cmake install routine to create a specific python_package folder containing all my targets, placed in the proper directories. Inside my setup.py file I then have something like:

...
package_dir={"": "."},
package_data={'': ['*.so', "*.dylib"]},
...

I am not an expert of python binary packages and I am still playing around a lot. The process I implemented so far allows me to properly package shared libs into my python package but I am not entirely sure this approach is correct when it comes to distributing my package.

[GabrielJMS]

Hello @hbadi, did you find a solution for this?