-#ifdef MACOS
-# define PATH_SEP ':'
-# define DYN_ALLOC
-# define PROTO
-# define NO_STDIN_FSTAT
-# define chmod(file, mode) (0)
-# define OPEN(name, flags, mode) open(name, flags)
-# define OS_CODE 0x07
-# ifdef MPW
-# define isatty(fd) ((fd) <= 2)
-# endif
-#endif
-
-#ifdef __50SERIES /* Prime/PRIMOS */
-# define PATH_SEP '>'
-# define STDC_HEADERS
-# define NO_STDIN_FSTAT
-# define NO_SIZE_CHECK
-# define RECORD_IO 1
-# define casemap(c) tolow(c) /* Force file names to lower case */
-# define put_char(c) put_byte((c) & 0x7F)
-# define get_char(c) ascii2pascii(get_byte())
-# define OS_CODE 0x0F /* temporary, subject to change */
-# ifdef SIGTERM
-# undef SIGTERM /* We don't want a signal handler for SIGTERM */
-# endif
-#endif
-
-#if defined(pyr) && !defined(NOMEMCPY) /* Pyramid */
-# define NOMEMCPY /* problem with overlapping copies */
-#endif
-