source $GRIMOIRE/CMAKE_FUNCTIONS
           SPELL=box2d
         VERSION=3.1.1
     SOURCE_HASH=sha512:7367640e7f2ff395b8ca48766c71f57c96e08c298627c996eba76899a149ee28b0e3ecacfa4a224fdb5d160c7e25c6069bb8414fd1575787727d796097aa347b
          SOURCE=$SPELL-$VERSION.tar.gz
SOURCE_DIRECTORY=$BUILD_DIRECTORY/$SPELL-$VERSION
        WEB_SITE="https://box2d.org"
   SOURCE_URL[0]=https://github.com/erincatto/box2d/archive/v$VERSION.tar.gz
      LICENSE[0]=MIT
         ENTERED=20211226
        KEYWORDS=""
           SHORT="2D physics engine for games"
cat << EOF
Box2D is a C++ physics engine for simulating rigid bodies in 2D.
EOF