GlueGen is a tool which automatically generates the Java and JNI code
necessary to call C libraries. It reads as input ANSI C header files
and separate configuration files which provide control over many aspects
of the glue code generation. GlueGen uses a complete ANSI C parser and
an internal representation (IR) capable of representing all C types to
represent the APIs for which it generates interfaces. It has the ability
to perform significant transformations on the IR before glue code emission.

GlueGen is currently powerful enough to bind even low-level APIs such as
the Java Native Interface (JNI) and the AWT Native Interface (JAWT)
back up to the Java programming language.