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.
New in version @VERSION@...
More smarts in converting SYNOPSIS sections into useful mdoc(7).