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You’ll need to install gforth to be able to run gbforth.

On mac, you can use brew:

brew install gforth


Alternatively, you can run gbforth in a Docker container. This does not require you to have any other dependencies (apart from Docker) installed. Use the amshackers/gbforth docker image:

docker run amshackers/gbforth

To compile your project, mount your project directory as a volume and pass the input and output file as CLI arguments:

docker run --rm -v "$PWD":/data amshackers/gbforth game.fs