Just had to try running this on Slackware 15 with the groff that is part of the install. The git source has a hardwired path to ghostscript/9.53.3/..some font.

Just had to try running this on Slackware 15 with the groff that is part of the install. The git source has a hardwired path to ghostscript/9.53.3/..some font. Just symlinked to the 9.55.0 present in Slackware and there we are, a pdf file, with some warnings about bookmarks and a table with zero width spacing. Impressive work. Thanks to those responsible for this both for the book and for an example of how to produce a book with groff using the ms macros.