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Annotation of 43BSDReno/contrib/emacs-18.55/src/s-usg5-3.h, revision 1.1

1.1     ! root        1: /* Definitions file for GNU Emacs running on AT&T's System V Release 3
        !             2:    Copyright (C) 1987 Free Software Foundation, Inc.
        !             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: 
        !            31: /* SYSTEM_TYPE should indicate the kind of system you are using.
        !            32:  It sets the Lisp variable system-type.  */
        !            33: 
        !            34: #define SYSTEM_TYPE "usg-unix-v"
        !            35: 
        !            36: /* nomultiplejobs should be defined if your system's shell
        !            37:  does not have "job control" (the ability to stop a program,
        !            38:  run some other program, then continue the first one).  */
        !            39: 
        !            40: #define NOMULTIPLEJOBS
        !            41: 
        !            42: /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
        !            43: 
        !            44: /* #define INTERRUPT_INPUT */
        !            45: 
        !            46: /* Letter to use in finding device name of first pty,
        !            47:   if system supports pty's.  'p' means it is /dev/ptyp0  */
        !            48: 
        !            49: #define FIRST_PTY_LETTER 'p'
        !            50: 
        !            51: /*
        !            52:  *     Define HAVE_TERMIO if the system provides sysV-style ioctls
        !            53:  *     for terminal control.
        !            54:  */
        !            55: 
        !            56: #define HAVE_TERMIO
        !            57: 
        !            58: /*
        !            59:  *     Define HAVE_TIMEVAL if the system supports the BSD style clock values.
        !            60:  *     Look in <sys/time.h> for a timeval structure.
        !            61:  */
        !            62: 
        !            63: /* #define HAVE_TIMEVAL */
        !            64:  
        !            65: /*
        !            66:  *     Define HAVE_SELECT if the system supports the `select' system call.
        !            67:  */
        !            68: 
        !            69: /* #define HAVE_SELECT */
        !            70: 
        !            71: /*
        !            72:  *     Define HAVE_PTYS if the system supports pty devices.
        !            73:  */
        !            74: 
        !            75: /* Some versions of V.3 have this, but not all.
        !            76:    #define HAVE_PTYS
        !            77:    #define SYSV_PTYS  */
        !            78: 
        !            79: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
        !            80: 
        !            81: /* #define HAVE_SOCKETS */
        !            82: 
        !            83: /*
        !            84:  *     Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
        !            85:  *      The 4.2 opendir, etc., library functions.
        !            86:  */
        !            87: 
        !            88: /* #define NONSYSTEM_DIR_LIBRARY */
        !            89: 
        !            90: /*
        !            91:  *     Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
        !            92:  *     library functions.  Almost, but not quite the same as
        !            93:  *     the 4.2 functions
        !            94:  */
        !            95: #define SYSV_SYSTEM_DIR
        !            96: 
        !            97: /* Define this symbol if your system has the functions bcopy, etc. */
        !            98: 
        !            99: /* #define BSTRING */
        !           100: 
        !           101: /* subprocesses should be defined if you want to
        !           102:  have code for asynchronous subprocesses
        !           103:  (as used in M-x compile and M-x shell).
        !           104:  This is supposed to work now on system V release 2.  */
        !           105: 
        !           106: #define subprocesses
        !           107: 
        !           108: /* If your system uses COFF (Common Object File Format) then define the
        !           109:    preprocessor symbol "COFF". */
        !           110: 
        !           111: #define COFF
        !           112: 
        !           113: /* define MAIL_USE_FLOCK if the mailer uses flock
        !           114:    to interlock access to /usr/spool/mail/$USER.
        !           115:    The alternative is that a lock file named
        !           116:    /usr/spool/mail/$USER.lock.  */
        !           117: 
        !           118: /* #define MAIL_USE_FLOCK */
        !           119: 
        !           120: /* Define CLASH_DETECTION if you want lock files to be written
        !           121:    so that Emacs can tell instantly when you try to modify
        !           122:    a file that someone else has modified in his Emacs.  */
        !           123: 
        !           124: /* #define CLASH_DETECTION */
        !           125: 
        !           126: /* Define SHORTNAMES if the C compiler can distinguish only
        !           127:    short names.  It means that the stuff in ../shortnames
        !           128:    must be run to convert the long names to short ones.  */
        !           129: 
        !           130: /* #define SHORTNAMES */
        !           131: 
        !           132: /* We use the Berkeley (and usg5.2.2) interface to nlist.  */
        !           133: 
        !           134: #define NLIST_STRUCT
        !           135: 
        !           136: /* The file containing the kernel's symbol table is called /unix.  */
        !           137: 
        !           138: #define KERNEL_FILE "/unix"
        !           139: 
        !           140: /* The symbol in the kernel where the load average is found
        !           141:    is named avenrun.  */
        !           142: 
        !           143: #define LDAV_SYMBOL "avenrun"
        !           144: 
        !           145: /* Define this if system V IPC is available.  */
        !           146: 
        !           147: #define HAVE_SYSVIPC
        !           148: 
        !           149: /* Special hacks needed to make Emacs run on this system.  */
        !           150: 
        !           151: /*
        !           152:  *     Make the sigsetmask function go away.  Don't know what the
        !           153:  *     ramifications of this are, but doesn't seem possible to
        !           154:  *     emulate it properly anyway at this point.
        !           155:  */
        !           156: 
        !           157: #define sigsetmask(mask)       /* Null expansion */
        !           158: 
        !           159: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
        !           160:    but they will run slower.  */
        !           161: 
        !           162: #define _setjmp setjmp
        !           163: #define _longjmp longjmp
        !           164: 
        !           165: /* On USG systems the system calls are interruptable by signals
        !           166:  that the user program has elected to catch.  Thus the system call
        !           167:  must be retried in these cases.  To handle this without massive
        !           168:  changes in the source code, we remap the standard system call names
        !           169:  to names for our own functions in sysdep.c that do the system call
        !           170:  with retries. */
        !           171: 
        !           172: #define read sys_read
        !           173: #define write sys_write
        !           174: #define open sys_open
        !           175: #define close sys_close
        !           176: 
        !           177: #define INTERRUPTABLE_OPEN
        !           178: #define INTERRUPTABLE_CLOSE
        !           179: #define INTERRUPTABLE_IO
        !           180: 
        !           181: /* On USG systems these have different names */
        !           182: 
        !           183: #define index strchr
        !           184: #define rindex strrchr
        !           185: 
        !           186: /* USG systems tend to put everything declared static
        !           187:    into the initialized data area, which becomes pure after dumping Emacs.
        !           188:    Foil this.  Emacs carefully avoids static vars inside functions.  */
        !           189: 
        !           190: #define static
        !           191: 
        !           192: /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
        !           193: 
        !           194: #define ADDR_CORRECT(x) (x)
        !           195: 
        !           196: /* Prevent -lg from being used for debugging.  Not implemented?  */
        !           197: 
        !           198: #define LIBS_DEBUG
        !           199: 
        !           200: /* Use terminfo instead of termcap.  */
        !           201: 
        !           202: #define TERMINFO
        !           203: 
        !           204: /* X needs to talk on the network, so search the network library.  */
        !           205: 
        !           206: #define LIBX10_SYSTEM -lnsl_s
        !           207: #define LIBX11_SYSTEM -lnsl_s

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