Hi Henning,
you should be able to split Europe once and then just let mkgmap calculate all the country maps based on the boundary polygons
I'm doing something similar for my maps. I create a map of a continent, for example Africa and then I execute mkgmap with list of img to create regional map. So what I would need is an easy way to create a list. I think mkgmap could support a polygon, which selects, which input files should be processed. Something like this: mkgmap ... --input-area=country.poly *.img mkgmap ... --input-area=country.poly -c areas.list I like that tiles aren't clipped, so for me would be good enough to select all tiles that are inside poly or intersect poly. My current procedure involve some awk scripts and manual processing of areas.list in Qgis. -- Best regards, Andrzej