This is a clone of Juergen Weigert's hexdump utility, xxd.
To use, just run make, and an executable will be compiled.
This fork, however, also provides CMake support for both the executable and a static lib version, for integration into larger CMake projects.
(c) 1990-1998 by Juergen Weigert (jnweiger@informatik.uni-erlangen.de).
Distribute freely and credit me,
make money and share with me,
lose money and don't ask me.
As per https://lists.debian.org/debian-legal/2015/01/msg00037.html, I believe that xxd is released under X11-MIT or GPL-2.0 (at the user's choice). I saved a copy of the web page I linked to as DeducedLicense.html.
Of course, you probably still want explicit written consent from the author or something just to make sure. Don't take my word for it.