http://ports.haiku-files.org/ticket/306

This one might work on gcc2 now since the limits issue has been fixed recently.

If the current version version of box2d fails, try using the version 2.1.2 as that one used to work before .recipe files and package management.

Version 2.1.2 works with the game numpty physics.  Once this task is done a follow up task will be opened to update numpty physics.