This archive contains machine specific files for compiling POV on Unix.
It contains:

UNIX.ZIP:

These files are fairly generic and can be used as the base for other ports.
   unixconf.h   - UNIX configuration header -- rename to config.h
   unix.c       - system specific routines for UNIX
   unix.mak     - makefile for UNIX

   xwindows.c   - B&W or color X Windows code for UNIX systems 
                  (include this instead of unix.c, 
                   use unixconf.h as config.h file)
   xpov.ico     - the Icon for X Windows
   xwindows.mak - makefile for X Windows

These files are fairly generic for ANSI standard C compilers 
Note that this mod of the UNIX port is user-provided and untested.
   gcc.c        - system specific routines for Gnu CC
   gccconf.h    - header file for Gnu CC -- rename to config.h

   rs6conf.h    - header file for HP RS6000 -- rename to config.h
                  use gcc.c also.

   unix.cat     - list of files in UNIX.ZIP