To build, run scripts/build.sh or scripts/build.bat depending on your OS, after that if everything worked correctly, the built exec should be in bin/. (for scripts/build.sh, usage is shown if ran with no arguments) BTW for unix a zsh completion script is available:
source scripts/completion/completion.zsh
I haven't tested this on windows, i mean I have, but don't have the chance to very often. So if you're trying to build on windows, just know that it MAY or MAY NOT actually work.
You can cross compile using mingw32-w64 on macos/linux to windows... use
source scripts/completion/completion_cross.zsh
for completion, and run scripts/build_cross.sh. (usage is shown if ran with no arguments)
For macOS users, there's a scripts/pkg_app.sh script and a scripts/create_dmg.sh script. First, run scripts/build.sh to build the project. Then, ./scrippts/pkg_a.sh, and scripts/create_dmg.sh to create a DMG out of the newly created app