[CMake] Make with dos paths

[John Doe]

I am trying to use the "unix makefiles" generator with the windows
version of cmake.  Unfortunately the make packaged with cygwin does
not like the ':' in the dos path name.  What version of make should I
use?

Geometry/CMakeFiles/geom.dir/build.make:53: *** target pattern
contains no `%'.  Stop.

Thanks,

Juan