source $GRIMOIRE/CMAKE_FUNCTIONS
           SPELL=libavif
         VERSION=0.9.0
          SOURCE="$SPELL-$VERSION.tar.gz"
   SOURCE_URL[0]=https://github.com/AOMediaCodec/${SPELL}/archive/v${VERSION}.tar.gz
     SOURCE_HASH=sha512:220ef27edf716af4ffc5b035c63f84e2848f165a3fe9c1b74dc0ba29f0de65147610fd4266f1b2419f60cfbb72159368da840fcb574c7a07364a60548d3db179
SOURCE_DIRECTORY="${BUILD_DIRECTORY}/${SPELL}-${VERSION}"
        WEB_SITE="https://github.com/AOMediaCodec/libavif"
      LICENSE[0]=BSD
         ENTERED=20200810
           SHORT="a friendly, portable C implementation of the AV1 Image File Format"
cat << EOF
A friendly, portable C implementation of the AV1 Image File Format.
EOF

.