Prerequisites should be available on any *nix-like system. You need
make (GNU or BSD; others may work), a C compiler (gcc, clang, and
even pcc will work). If you're going to modify the man page, you'll
need rst2man. If you're going to "make install", you need a GNU-style
install command, a mkdir command that accepts -p, and gzip.

A simple "make && sudo make install" should work, if you're not
creating a package. Binary will go to /usr/local/bin, man page in
/usr/local/share/man1, README in /usr/local/share/doc/xdeadzone.

If you're a packager, have a look at the top of the Makefile for
variables you can override. Paths don't get "baked in" to the binary,
so you only have to override them on the "make install". Don't include
this INSTALL file in your package; it's useless for binary package
users.