Linux Driver for the USB 2.0 to 10/100 Fast Ethernet adapter on Raspberry Pi

The default distribution of Raspbian that comes with the Pi seems like it would work with the supplied Linux driver source, however, the compilation fails with a "no rules to make target ‘modules’ " error. IS there something missing in the makefile?

I’m also having the same problem trying to compile the driver in a Smoothwall Express Developer environment, the no rules error module fault also pops up, anyone?