Hi Win build fails complaining about not being able to compile 'geod_for.obj'. One need to change line 62 of src/makefile.vc from GEODEXE_OBJ = geod.obj geod_set.obj geod_for.obj geod_inv.obj emess.obj to GEODEXE_OBJ = geod.obj geod_set.obj geod_interface.obj geodesic.obj emess.obj Joaquim