A C++ compiler and the Ocaml (Objective Caml)
compiler must already be installed.
By default, the GNU C++ compiler is used (g++).  The Ocaml compiler
is easy to install on most systems and can be found at 
http://caml.inria.fr
Other requirements are the expat XML parsing library and the cmake
build system.

To build what I have so far, including the ocaml expat XML parser which is included,
just type, from this directory:

cmake -B build
cmake --build build
cmake --install build

The executables are placed in the bin/ directory.

To clean up the directories, type

./clean_all

Here is a description of the subdirectories:

aux - The Ocaml auxilliary programs
bin - all of the generated executables
source - C++ source files