Or you can directly use the binary. By default, it uses a low quality built-in map of earth. But you will probably want to use better ones. You can get maps usable with WMGlobe on the net. North 0 West must be in the center of the image and the latitude must be linear from 90 N to 90 S. - When using a night map, make sure that day and night map have the same dimensions.
Configuration is done through command line options.
1 to magnify the view, value The code in 'sunpos.cpp' is taken from Xearth by Kirk Lauritz Johnson.