RED=yes shared
         - To make the prototype extraction program (in src):
               make   (to make the library first)
               make xtractprotos

       * To use shared libraries, you need to include the location of
         the shared libraries in your LD_LIBRARY_PATH.  For example,
         after you have built programs with 'make SHARED=yes' in the
         prog directory, you need to tell the programs where the shared
         libraries are:
             export LD_LIBRARY_PATH=../lib/shar