Version mkgmap-r3731 was committed by steve on Sun, 18 Dec 2016 Implement a new map output format "gmapi" When the --gmapi option is given then the map will be created in a directory named after the family name with an extension .gmap This format is used to install maps on a Mac. As with the --gmapsupp option, you can start with a set of .img files that where created in a previous mkgmap run if you wish, as well as in one step from the source OSM .pbf, .osm.gz etc files. http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3731