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Annotation of 43BSD/contrib/emacs/src/s-usg5.0.h, revision 1.1

1.1     ! root        1: /* Definitions file for GNU Emacs running on AT&T's System V.0
        !             2:    Copyright (C) 1985 Richard M. Stallman.
        !             3: 
        !             4: This file is part of GNU Emacs.
        !             5: 
        !             6: GNU Emacs is distributed in the hope that it will be useful,
        !             7: but WITHOUT ANY WARRANTY.  No author or distributor
        !             8: accepts responsibility to anyone for the consequences of using it
        !             9: or for whether it serves any particular purpose or works at all,
        !            10: unless he says so in writing.  Refer to the GNU Emacs General Public
        !            11: License for full details.
        !            12: 
        !            13: Everyone is granted permission to copy, modify and redistribute
        !            14: GNU Emacs, but only under the conditions described in the
        !            15: GNU Emacs General Public License.   A copy of this license is
        !            16: supposed to have been given to you along with GNU Emacs so you
        !            17: can know your rights and responsibilities.  It should be in a
        !            18: file named COPYING.  Among other things, the copyright notice
        !            19: and this notice must be preserved on all copies.  */
        !            20: 
        !            21: 
        !            22: /*
        !            23:  *     Define symbols to identify the version of Unix this is.
        !            24:  *     Define all the symbols that apply correctly.
        !            25:  */
        !            26: 
        !            27: #define USG                            /* System III, System V, etc */
        !            28: 
        !            29: #define USG5
        !            30: #define        USG5_0
        !            31: 
        !            32: /* SYSTEM_TYPE should indicate the kind of system you are using.
        !            33:  It sets the Lisp variable system-type.  */
        !            34: 
        !            35: #define SYSTEM_TYPE "usg-unix-v"
        !            36: 
        !            37: /* nomultiplejobs should be defined if your system's shell
        !            38:  does not have "job control" (the ability to stop a program,
        !            39:  run some other program, then continue the first one).  */
        !            40: 
        !            41: #define NOMULTIPLEJOBS
        !            42: 
        !            43: /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
        !            44: 
        !            45: /* #define INTERRUPT_INPUT */
        !            46: 
        !            47: /* Letter to use in finding device name of first pty,
        !            48:   if system supports pty's.  'p' means it is /dev/ptyp0  */
        !            49: 
        !            50: #define FIRST_PTY_LETTER 'p'
        !            51: 
        !            52: /*
        !            53:  *     Define HAVE_TIMEVAL if the system supports the BSD style clock values.
        !            54:  *     Look in <sys/time.h> for a timeval structure.
        !            55:  */
        !            56: 
        !            57: /* #define HAVE_TIMEVAL */
        !            58:  
        !            59: /*
        !            60:  *     Define HAVE_SELECT if the system supports the `select' system call.
        !            61:  */
        !            62: 
        !            63: /* #define HAVE_SELECT */
        !            64: 
        !            65: /*
        !            66:  *     Define HAVE_PTYS if the system supports pty devices.
        !            67:  */
        !            68: 
        !            69: /* #define HAVE_PTYS */
        !            70: 
        !            71: /*
        !            72:  *     Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
        !            73:  *      The 4.2 opendir, etc., library functions.
        !            74:  */
        !            75: 
        !            76: #define NONSYSTEM_DIR_LIBRARY
        !            77: 
        !            78: /* Define this symbol if your system has the functions bcopy, etc. */
        !            79: 
        !            80: /* #define BSTRING */
        !            81: 
        !            82: /* subprocesses should be defined if you want to
        !            83:  have code for asynchronous subprocesses
        !            84:  (as used in M-x compile and M-x shell).
        !            85:  This is supposed to work now on system V release 2.  */
        !            86: 
        !            87: #define subprocesses
        !            88: 
        !            89: /* If your system uses COFF (Common Object File Format) then define the
        !            90:    preprocessor symbol "COFF". */
        !            91: 
        !            92: #define COFF
        !            93: 
        !            94: /* define MAIL_USE_FLOCK if the mailer uses flock
        !            95:    to interlock access to /usr/spool/mail/$USER.
        !            96:    The alternative is that a lock file named
        !            97:    /usr/spool/mail/$USER.lock.  */
        !            98: 
        !            99: /* #define MAIL_USE_FLOCK */
        !           100: 
        !           101: /* Define CLASH_DETECTION if you want lock files to be written
        !           102:    so that Emacs can tell instantly when you try to modify
        !           103:    a file that someone else has modified in his Emacs.  */
        !           104: 
        !           105: /* #define CLASH_DETECTION */
        !           106: 
        !           107: /* Define SHORTNAMES if the C compiler can distinguish only
        !           108:    short names.  It means that the stuff in ../shortnames
        !           109:    must be run to convert the long names to short ones.  */
        !           110: 
        !           111: #define SHORTNAMES
        !           112: 
        !           113: /* Special hacks needed to make Emacs run on this system.  */
        !           114: 
        !           115: /*
        !           116:  *     Make the sigsetmask function go away.  Don't know what the
        !           117:  *     ramifications of this are, but doesn't seem possible to
        !           118:  *     emulate it properly anyway at this point.
        !           119:  */
        !           120: 
        !           121: #define sigsetmask(mask)       /* Null expansion */
        !           122: 
        !           123: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
        !           124:    but they will run slower.  */
        !           125: 
        !           126: #define _setjmp setjmp
        !           127: #define _longjmp longjmp
        !           128: 
        !           129: /* On USG systems the system calls are interruptable by signals
        !           130:  that the user program has elected to catch.  Thus the system call
        !           131:  must be retried in these cases.  To handle this without massive
        !           132:  changes in the source code, we remap the standard system call names
        !           133:  to names for our own functions in sysdep.c that do the system call
        !           134:  with retries. */
        !           135: 
        !           136: #define read sys_read
        !           137: #define open sys_open
        !           138: #define write sys_write
        !           139: 
        !           140: /* On USG systems these have different names */
        !           141: 
        !           142: #define index strchr
        !           143: #define rindex strrchr
        !           144: 
        !           145: /* USG systems tend to put everything declared static
        !           146:    into the initialized data area, which becomes pure after dumping Emacs.
        !           147:    Foil this.  Emacs carefully avoids static vars inside functions.  */
        !           148: 
        !           149: #define static
        !           150: 
        !           151: /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
        !           152: 
        !           153: #define ADDR_CORRECT(x) (x)

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