This project demonstrates how to make Go programs call C++ facilities.
The basic idea is to write a
C wrapper
of the
C++ facilities,
and use cgo to call this C wrapper.
However, it is known that C programs cannot call C++ facilities. The
trick is to write the wrapper in C++, so it can contain some C
functions defined using extern "C"; and exports only these C
functions to cgo.
It is also notable that cgo allows Go programs to call C functions
in shared libraries only. So we need to build the wrapper as a shared
library. To do so, we build the C++ facilities into a static library,
which is then linked into the wrapper (shared) library.
In this example project, we use SCons to build C++ code.