CommonMark parsing and rendering library and program in C. http://commonmark.org
A secondary version commonmark-gfm is an upstream-compatible fork which includes “GitHub-flavored Markdown” enhancements. This fork is maintained by GitHub.
See https://github.com/jgm/cmark/releases for releases.
Edit the Makefile to ensure that you are setting the intended version, then run make.
make standard
make gfm