OvermindDL1
     
     
       The default glob options for
       
        define_source_files
       
       are a little odd, only looking for *.cpp and *.h files.  The common file extensions should likely be:
       
       Source Files glob:  *.c *.c++ *.cxx *.cpp *.cc *.C
       
       Header Files glob:  *.h *.hh *.H *.h++ *.hxx *.hpp *.hcc
      
I have submitted a pull request to make that change (just a two line change). Is this acceptable or did I miss any?