AsciiDoctor and Pygments are required to create the User Guide. On FreeBSD, install the packages with:
# pkg install devel/rubygem-pygments.rb textproc/rubygem-asciidoctor
Convert the User Guide from AsciiDoc to HTML:
$ make html
Or, run make guide in the parent directory.
The User Guide may also be compiled to PDF if Asciidoctor PDF is installed:
# pkg install textproc/rubygem-asciidoctor-pdf
Then, run:
$ make pdf