Man pages for LTFS is originally written by SGML (DocBook V4.1). And it is converted to man (troff) by docbook2man.
At this time, we confirmed only docbook2man provided by docbook-utils on RHEL7 and RHEL8 can convet the docbook in the sgml directory. Thus we don't integrate auto build of man pages into build process. You can rebuild all man pages with make man-rebuild in this directory when you change the sgml documents (Please don't edit man page directly).
The folllowing link is useful to refer how to write docbook::reference document in SGML.