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

1.1     ! root        1: /* Definitions file for GNU Emacs running SCO Xenix 386 Release 2.2
        !             2:    Copyright (C) 1988 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:  *     Define symbols to identify the version of Unix this is.
        !            23:  *     Define all the symbols that apply correctly.
        !            24:  */
        !            25: 
        !            26: /* #define UNIPLUS */
        !            27: #define XENIX
        !            28: #define USG5
        !            29: #define USG
        !            30: /* #define HPUX */
        !            31: /* #define UMAX */
        !            32: /* #define BSD4_1 */
        !            33: /* #define BSD4_2 */
        !            34: /* #define BSD4_3 */
        !            35: /* #define BSD */
        !            36: /* #define VMS */
        !            37: 
        !            38: /* SYSTEM_TYPE should indicate the kind of system you are using.
        !            39:  It sets the Lisp variable system-type.  */
        !            40: 
        !            41: #define SYSTEM_TYPE "xenix"
        !            42: 
        !            43: /* NOMULTIPLEJOBS should be defined if your system's shell
        !            44:  does not have "job control" (the ability to stop a program,
        !            45:  run some other program, then continue the first one).  */
        !            46: 
        !            47: #define NOMULTIPLEJOBS
        !            48: 
        !            49: /* Emacs can read input using SIGIO and buffering characters itself,
        !            50:    or using CBREAK mode and making C-g cause SIGINT.
        !            51:    The choice is controlled by the variable interrupt_input.
        !            52:    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
        !            53: 
        !            54:    SIGIO can be used only on systems that implement it (4.2 and 4.3).
        !            55:    CBREAK mode has two disadvatages
        !            56:      1) At least in 4.2, it is impossible to handle the Meta key properly.
        !            57:         I hear that in system V this problem does not exist.
        !            58:      2) Control-G causes output to be discarded.
        !            59:         I do not know whether this can be fixed in system V.
        !            60: 
        !            61:    Another method of doing input is planned but not implemented.
        !            62:    It would have Emacs fork off a separate process
        !            63:    to read the input and send it to the true Emacs process
        !            64:    through a pipe.
        !            65: */
        !            66: 
        !            67: /* #define INTERRUPT_INPUT */
        !            68: 
        !            69: /* Letter to use in finding device name of first pty,
        !            70:   if system supports pty's.  'p' means it is /dev/ptyp0  */
        !            71: 
        !            72: /* #define FIRST_PTY_LETTER 'p' */
        !            73: 
        !            74: /*
        !            75:  *     Define HAVE_TERMIO if the system provides sysV-style ioctls
        !            76:  *     for terminal control.
        !            77:  */
        !            78: 
        !            79: #define HAVE_TERMIO
        !            80: 
        !            81: /*
        !            82:  *     Define HAVE_TIMEVAL if the system supports the BSD style clock values.
        !            83:  *     Look in <sys/time.h> for a timeval structure.
        !            84:  */
        !            85: 
        !            86: /* #define HAVE_TIMEVAL */
        !            87:  
        !            88: /*
        !            89:  *     Define HAVE_SELECT if the system supports the `select' system call.
        !            90:  */
        !            91: 
        !            92: /* #define HAVE_SELECT */
        !            93: 
        !            94: /*
        !            95:  *     Define HAVE_PTYS if the system supports pty devices.
        !            96:  */
        !            97: 
        !            98: /* #define HAVE_PTYS */
        !            99: 
        !           100: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
        !           101: 
        !           102: /* #define HAVE_SOCKETS */
        !           103: 
        !           104: /*
        !           105:  *     Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
        !           106:  *      The 4.2 opendir, etc., library functions.
        !           107:  */
        !           108: 
        !           109: #define NONSYSTEM_DIR_LIBRARY
        !           110: 
        !           111: /* Define this symbol if your system has the functions bcopy, etc. */
        !           112: 
        !           113: /* #define BSTRING */
        !           114: 
        !           115: /* subprocesses should be defined if you want to
        !           116:  have code for asynchronous subprocesses
        !           117:  (as used in M-x compile and M-x shell).
        !           118:  This is supposed to work now on system V release 2.  */
        !           119: 
        !           120: #define subprocesses
        !           121: 
        !           122: /* If your system uses COFF (Common Object File Format) then define the
        !           123:    preprocessor symbol "COFF". */
        !           124: 
        !           125: /* #define COFF */
        !           126: 
        !           127: /* Xenix requires completely different unexec code
        !           128:    which lives in a separate file.  Specify the file name.  */
        !           129: 
        !           130: #define UNEXEC unexenix.o
        !           131: 
        !           132: /* define MAIL_USE_FLOCK if the mailer uses flock
        !           133:    to interlock access to /usr/spool/mail/$USER.
        !           134:    The alternative is that a lock file named
        !           135:    /usr/spool/mail/$USER.lock.  */
        !           136: 
        !           137: #define MAIL_USE_FLOCK
        !           138: 
        !           139: /* Define CLASH_DETECTION if you want lock files to be written
        !           140:    so that Emacs can tell instantly when you try to modify
        !           141:    a file that someone else has modified in his Emacs.  */
        !           142: 
        !           143: /* The way this is implemented requires long filenames... */
        !           144: /* #define CLASH_DETECTION */
        !           145: 
        !           146: /* Define SHORTNAMES if the C compiler can distinguish only
        !           147:    short names.  It means that the stuff in ../shortnames
        !           148:    must be run to convert the long names to short ones.  */
        !           149: 
        !           150: /* #define SHORTNAMES */
        !           151: 
        !           152: /* We do not use the Berkeley (and usg5.2.2) interface to nlist.  */
        !           153: 
        !           154: /* #define NLIST_STRUCT */
        !           155: 
        !           156: /* Compensate for one incompatibility between Xenix and V.0.  */
        !           157: #define n_zeroes n_name[0]
        !           158: 
        !           159: /* The file containing the kernel's symbol table is called /xenix.  */
        !           160: 
        !           161: #define KERNEL_FILE "/xenix"
        !           162: 
        !           163: /* The symbol in the kernel where the load average is found
        !           164:    is named avenrun.  */
        !           165: 
        !           166: #define LDAV_SYMBOL "_avenrun"
        !           167: 
        !           168: /* Special hacks needed to make Emacs run on this system.  */
        !           169: 
        !           170: /*
        !           171:  *     Make the sigsetmask function go away.  Don't know what the
        !           172:  *     ramifications of this are, but doesn't seem possible to
        !           173:  *     emulate it properly anyway at this point.
        !           174:  */
        !           175: 
        !           176: #define sigsetmask(mask)       /* Null expansion */
        !           177: 
        !           178: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
        !           179:    but they will run slower.  */
        !           180: 
        !           181: #define _setjmp setjmp
        !           182: #define _longjmp longjmp
        !           183: 
        !           184: /* On USG systems the system calls are interruptable by signals
        !           185:  that the user program has elected to catch.  Thus the system call
        !           186:  must be retried in these cases.  To handle this without massive
        !           187:  changes in the source code, we remap the standard system call names
        !           188:  to names for our own functions in sysdep.c that do the system call
        !           189:  with retries. */
        !           190: 
        !           191: #define read sys_read
        !           192: #define open sys_open
        !           193: #define write sys_write
        !           194: 
        !           195: #define INTERRUPTABLE_OPEN
        !           196: #define INTERRUPTABLE_IO
        !           197: 
        !           198: /* On USG systems these have different names */
        !           199: 
        !           200: #define index strchr
        !           201: #define rindex strrchr
        !           202: 
        !           203: /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
        !           204: 
        !           205: #define ADDR_CORRECT(x) (x)
        !           206: 
        !           207: /* Prevent -lg from being used for debugging.  Not implemented?  */
        !           208: 
        !           209: #define LIBS_DEBUG
        !           210: 
        !           211: /* Switches for linking temacs.  */
        !           212: 
        !           213: #define LD_SWITCH_SYSTEM -i
        !           214: 
        !           215: /* Xenix implements sysV style IPC.  */
        !           216: 
        !           217: #define HAVE_SYSVIPC
        !           218: 
        !           219: /* Use terminfo instead of termcap.  */
        !           220: 
        !           221: /* Tell Emacs to use Terminfo.  */
        !           222: 
        !           223: #define TERMINFO
        !           224: 
        !           225: /* Tell Xenix curses to BE Terminfo.  */
        !           226: #define M_TERMINFO
        !           227: 
        !           228: /* Control program name for etc/fakemail to run.  */
        !           229: 
        !           230: #ifdef SMAIL
        !           231: #define MAIL_PROGRAM_NAME "/usr/bin/smail -q0"
        !           232: #else
        !           233: #define MAIL_PROGRAM_NAME "/usr/lib/mail/execmail"
        !           234: #endif

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