SWIG demo

Simple python SWIG demo

Make sure you have anaconda python installed.

Commands to call to build the python library from C++ files:

swig -c++ -python example.i
python setup.py build_ext --inplace

If you want to include external C++ libraries

Let's assume you want to include boost library, and get a python SWIG of this C++ project including boost library.

Then we include the library in the usual way in the C++ files - e.g. the example.h becomes

#ifndef EXAMPLE_H
#define EXAMPLE_H

#include<vector>
#include<iostream>
#include <boost/lambda/lambda.hpp>
#include <boost/any.hpp>

using namespace std;

int test();


#endif

and we need to include location of these libraries also in the setup.py file. For example

# setup.py
...
example_module = Extension('_example',sources = ['example_wrap.cxx', 'example.cpp'], 
                 include_dirs = ['/opt/homebrew/opt/boost/include'])
...
where the new parameter `include_dirs` now contains a link to the `boost` include library dir