The library (opencog/guile) implements Scheme extensions using guile. To build it, use:

make smob

Dependencies:

guile library

This page is a high level overview of the library; to dig into the details read the comprehensive overview.

The wiki page describes both how to run it and the core functions that are provided. Main class for evaluation is SchemeEval. It is implemented as a singleton, so to get the instance use:

SchemeEval &eval = SchemeEval::instance(&as);

Wrapping a C++ object is done using SchemePrimitive and actual implementation is done by SchemeSmob.