The pod2mdoc utility is a converter from POD into mdoc. It's meant to operate like pod2man; however, it doesn't require a Perl installation: pod2mdoc is a standalone ISC-licensed ISO C utility and should compile on any modern UNIX system.

Be aware, as stated in the manual:

By way of being a presentational language, POD is not well-represented by mdoc(7). Semantic content will be necessarily lost.

Contact Kristaps with questions, but please make sure any formatting issue hasn't already been covered in the manual.