libConfuse is a configuration file parser library, licensed under the
terms of the LGPL, and written in C. It supports sections and (lists
of) values (strings, integers, floats, booleans or other sections), as
well as some other features (such as single/double-quoted strings,
environment variable expansion, functions and nested include
statements). It makes it very easy to add configuration file capability
to a program using a simple API.

The goal of libConfuse is not to be the configuration file parser
library with a gazillion of features. Instead, it aims to be easy to
use and quick to integrate with your code. libConfuse was called libcfg
before, but was changed to not confuse with other similar libraries.