[gembud] Compiling GEMPAK 6.8.0 on OSX Mountain Lion

Hello, I am trying to compile on OSX 10.8 and I have gotten all dependencies 
installed via macports and I installed OpenMotif from source.

I set my Gemenviron.profile but when I run make it instantly quits with the 
following message:

make: *** /: Is a directory.  Stop.

What should I do here in order to compile? It seems it is just missing an 
environment var but I don't know what to set.

Thanks