This project relies on several BSD extensions to the stdlib. OpenBSD and macOS users should be able to build the project out of the box. Linux users will need `libbsd` installed. The package is called `libbsd-dev` on Debian-based systems.
Inputs can be generated from `get_input.sh`. You will need to get your session cookie from the Advent of Code website. The easiest way to do this is to inspect any input page in your browser.
The script can then be run with `bash get_input.sh SESSIONCOOKIE`, with `SESSIONCOOKIE` replaced by your unique session cookie's hash.