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Annotation of GNUtools/emacs/src/s-usg5-2.h, revision 1.1

1.1     ! root        1: /* Definitions file for GNU Emacs running on AT&T's System V Release 2.0
        !             2:    Copyright (C) 1985, 1986 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU Emacs.
        !             5: 
        !             6: GNU Emacs is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 1, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU Emacs is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: 
        !            21: /*
        !            22:  *     Define symbols to identify the version of Unix this is.
        !            23:  *     Define all the symbols that apply correctly.
        !            24:  */
        !            25: 
        !            26: #define USG                            /* System III, System V, etc */
        !            27: 
        !            28: #define USG5
        !            29: 
        !            30: /* SYSTEM_TYPE should indicate the kind of system you are using.
        !            31:  It sets the Lisp variable system-type.  */
        !            32: 
        !            33: #define SYSTEM_TYPE "usg-unix-v"
        !            34: 
        !            35: /* nomultiplejobs should be defined if your system's shell
        !            36:  does not have "job control" (the ability to stop a program,
        !            37:  run some other program, then continue the first one).  */
        !            38: 
        !            39: #define NOMULTIPLEJOBS
        !            40: 
        !            41: /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
        !            42: 
        !            43: /* #define INTERRUPT_INPUT */
        !            44: 
        !            45: /* Letter to use in finding device name of first pty,
        !            46:   if system supports pty's.  'p' means it is /dev/ptyp0  */
        !            47: 
        !            48: #define FIRST_PTY_LETTER 'p'
        !            49: 
        !            50: /*
        !            51:  *     Define HAVE_TERMIO if the system provides sysV-style ioctls
        !            52:  *     for terminal control.
        !            53:  */
        !            54: 
        !            55: #define HAVE_TERMIO
        !            56: 
        !            57: /*
        !            58:  *     Define HAVE_TIMEVAL if the system supports the BSD style clock values.
        !            59:  *     Look in <sys/time.h> for a timeval structure.
        !            60:  */
        !            61: 
        !            62: /* #define HAVE_TIMEVAL */
        !            63:  
        !            64: /*
        !            65:  *     Define HAVE_SELECT if the system supports the `select' system call.
        !            66:  */
        !            67: 
        !            68: /* #define HAVE_SELECT */
        !            69: 
        !            70: /*
        !            71:  *     Define HAVE_PTYS if the system supports pty devices.
        !            72:  */
        !            73: 
        !            74: /* #define HAVE_PTYS */
        !            75: 
        !            76: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
        !            77: 
        !            78: /* #define HAVE_SOCKETS */
        !            79: 
        !            80: /*
        !            81:  *     Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
        !            82:  *      The 4.2 opendir, etc., library functions.
        !            83:  */
        !            84: 
        !            85: #define NONSYSTEM_DIR_LIBRARY
        !            86: 
        !            87: /* Define this symbol if your system has the functions bcopy, etc. */
        !            88: 
        !            89: /* #define BSTRING */
        !            90: 
        !            91: /* subprocesses should be defined if you want to
        !            92:  have code for asynchronous subprocesses
        !            93:  (as used in M-x compile and M-x shell).
        !            94:  This is supposed to work now on system V release 2.  */
        !            95: 
        !            96: #define subprocesses
        !            97: 
        !            98: /* If your system uses COFF (Common Object File Format) then define the
        !            99:    preprocessor symbol "COFF". */
        !           100: 
        !           101: #define COFF
        !           102: 
        !           103: /* define MAIL_USE_FLOCK if the mailer uses flock
        !           104:    to interlock access to /usr/spool/mail/$USER.
        !           105:    The alternative is that a lock file named
        !           106:    /usr/spool/mail/$USER.lock.  */
        !           107: 
        !           108: /* #define MAIL_USE_FLOCK */
        !           109: 
        !           110: /* Define CLASH_DETECTION if you want lock files to be written
        !           111:    so that Emacs can tell instantly when you try to modify
        !           112:    a file that someone else has modified in his Emacs.  */
        !           113: 
        !           114: /* #define CLASH_DETECTION */
        !           115: 
        !           116: /* Define SHORTNAMES if the C compiler can distinguish only
        !           117:    short names.  It means that the stuff in ../shortnames
        !           118:    must be run to convert the long names to short ones.  */
        !           119: 
        !           120: /* #define SHORTNAMES */
        !           121: 
        !           122: /* We do NOT use the Berkeley (and usg5.2.2) interface to nlist.  */
        !           123: 
        !           124: /* #define NLIST_STRUCT */
        !           125: 
        !           126: /* The file containing the kernel's symbol table is called /unix.  */
        !           127: 
        !           128: #define KERNEL_FILE "/unix"
        !           129: 
        !           130: /* The symbol in the kernel where the load average is found
        !           131:    is named avenrun.  */
        !           132: 
        !           133: #define LDAV_SYMBOL "avenrun"
        !           134: 
        !           135: /* Special hacks needed to make Emacs run on this system.  */
        !           136: 
        !           137: /*
        !           138:  *     Make the sigsetmask function go away.  Don't know what the
        !           139:  *     ramifications of this are, but doesn't seem possible to
        !           140:  *     emulate it properly anyway at this point.
        !           141:  */
        !           142: 
        !           143: #define sigsetmask(mask)       /* Null expansion */
        !           144: 
        !           145: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
        !           146:    but they will run slower.  */
        !           147: 
        !           148: #define _setjmp setjmp
        !           149: #define _longjmp longjmp
        !           150: 
        !           151: /* On USG systems the system calls are interruptable by signals
        !           152:  that the user program has elected to catch.  Thus the system call
        !           153:  must be retried in these cases.  To handle this without massive
        !           154:  changes in the source code, we remap the standard system call names
        !           155:  to names for our own functions in sysdep.c that do the system call
        !           156:  with retries. */
        !           157: 
        !           158: #define read sys_read
        !           159: #define open sys_open
        !           160: #define write sys_write
        !           161: 
        !           162: #define INTERRUPTABLE_OPEN
        !           163: #define INTERRUPTABLE_IO
        !           164: 
        !           165: /* On USG systems these have different names */
        !           166: 
        !           167: #define index strchr
        !           168: #define rindex strrchr
        !           169: 
        !           170: /* USG systems tend to put everything declared static
        !           171:    into the initialized data area, which becomes pure after dumping Emacs.
        !           172:    Foil this.  Emacs carefully avoids static vars inside functions.  */
        !           173: 
        !           174: #define static
        !           175: 
        !           176: /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
        !           177: 
        !           178: #define ADDR_CORRECT(x) (x)
        !           179: 
        !           180: /* Prevent -lg from being used for debugging.  Not implemented?  */
        !           181: 
        !           182: #define LIBS_DEBUG
        !           183: 
        !           184: /* Use terminfo instead of termcap.  */
        !           185: 
        !           186: #define TERMINFO

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