src/s/xenix.h

   1 /* Definitions file for GNU Emacs running SCO Xenix 386 Release 2.2
   2    Copyright (C) 1988, 1999, 2001, 2002, 2003, 2004,
   3                  2005, 2006, 2007  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  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 UNIPLUS */
  28 #define XENIX
  29 #define USG5
  30 #define USG
  31 /* #define HPUX */
  32 /* #define UMAX */
  33 /* #define BSD4_1 */
  34 /* #define BSD4_2 */
  35 /* #define BSD4_3 */
  36 /* #define BSD_SYSTEM */
  37 /* #define VMS */
  38
  39 /* SYSTEM_TYPE should indicate the kind of system you are using.
  40  It sets the Lisp variable system-type.  */
  41
  42 #define SYSTEM_TYPE "xenix"
  43
  44 /* NOMULTIPLEJOBS should be defined if your system's shell
  45  does not have "job control" (the ability to stop a program,
  46  run some other program, then continue the first one).  */
  47
  48 #define NOMULTIPLEJOBS
  49
  50 /* Emacs can read input using SIGIO and buffering characters itself,
  51    or using CBREAK mode and making C-g cause SIGINT.
  52    The choice is controlled by the variable interrupt_input.
  53    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  54
  55    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  56    CBREAK mode has two disadvantages:
  57      1) At least in 4.2, it is impossible to handle the Meta key properly.
  58         I hear that in system V this problem does not exist.
  59      2) Control-G causes output to be discarded.
  60         I do not know whether this can be fixed in system V.
  61
  62    Another method of doing input is planned but not implemented.
  63    It would have Emacs fork off a separate process
  64    to read the input and send it to the true Emacs process
  65    through a pipe.
  66 */
  67
  68 /* #define INTERRUPT_INPUT */
  69
  70 /* Letter to use in finding device name of first pty,
  71   if system supports pty's.  'p' means it is /dev/ptyp0  */
  72
  73 /* #define FIRST_PTY_LETTER 'p' */
  74
  75 /*
  76  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  77  *      for terminal control.
  78  */
  79
  80 #define HAVE_TERMIO
  81
  82 /*
  83  *      Define HAVE_PTYS if the system supports pty devices.
  84  */
  85
  86 /* #define HAVE_PTYS */
  87
  88 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
  89
  90 /* #define HAVE_SOCKETS */
  91
  92 /*
  93  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
  94  *      The 4.2 opendir, etc., library functions.
  95  */
  96
  97 #define NONSYSTEM_DIR_LIBRARY
  98
  99 /* Define this symbol if your system has the functions bcopy, etc. */
 100
 101 /* #define BSTRING */
 102
 103 /* subprocesses should be defined if you want to
 104  have code for asynchronous subprocesses
 105  (as used in M-x compile and M-x shell).
 106  This is supposed to work now on system V release 2.  */
 107
 108 #define subprocesses
 109
 110 /* If your system uses COFF (Common Object File Format) then define the
 111    preprocessor symbol "COFF". */
 112
 113 /* #define COFF */
 114
 115 /* Xenix requires completely different unexec code
 116    which lives in a separate file.  Specify the file name.  */
 117
 118 #define UNEXEC unexenix.o
 119
 120 /* define MAIL_USE_FLOCK if the mailer uses flock
 121    to interlock access to /usr/spool/mail/$USER.
 122    The alternative is that a lock file named
 123    /usr/spool/mail/$USER.lock.  */
 124
 125 #define MAIL_USE_FLOCK
 126
 127 /* Define CLASH_DETECTION if you want lock files to be written
 128    so that Emacs can tell instantly when you try to modify
 129    a file that someone else has modified in his Emacs.  */
 130
 131 /* The way this is implemented requires long filenames... */
 132 /* #define CLASH_DETECTION */
 133
 134 /* Define SHORTNAMES if the C compiler can distinguish only
 135    short names.  It means that the stuff in ../shortnames
 136    must be run to convert the long names to short ones.  */
 137
 138 /* #define SHORTNAMES */
 139
 140 /* Compensate for one incompatibility between Xenix and V.0.  */
 141 #define n_zeroes n_name[0]
 142
 143 /* The file containing the kernel's symbol table is called /xenix.  */
 144
 145 #define KERNEL_FILE "/xenix"
 146
 147 /* The symbol in the kernel where the load average is found
 148    is named avenrun.  */
 149
 150 #define LDAV_SYMBOL "_avenrun"
 151 \f
 152 /* Special hacks needed to make Emacs run on this system.  */
 153
 154 /*
 155  *      Make the sigsetmask function go away.  Don't know what the
 156  *      ramifications of this are, but doesn't seem possible to
 157  *      emulate it properly anyway at this point.
 158  */
 159
 160 #define sigsetmask(mask)        /* Null expansion */
 161
 162 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
 163    but they will run slower.  */
 164
 165 #define _setjmp setjmp
 166 #define _longjmp longjmp
 167
 168 /* On USG systems these have different names */
 169
 170 #define index strchr
 171 #define rindex strrchr
 172
 173 /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
 174
 175 #define ADDR_CORRECT(x) (x)
 176
 177 /* Prevent -lg from being used for debugging.  Not implemented?  */
 178
 179 #define LIBS_DEBUG
 180
 181 /* Switches for linking temacs.  */
 182
 183 #define LD_SWITCH_SYSTEM -i
 184
 185 /* Xenix implements sysV style IPC.  */
 186
 187 #define HAVE_SYSVIPC
 188
 189 /* Use terminfo instead of termcap.  */
 190
 191 /* Tell Emacs to use Terminfo.  */
 192
 193 #define TERMINFO
 194
 195 /* Tell Xenix curses to BE Terminfo.  */
 196 #define M_TERMINFO
 197
 198 /* Control program name for etc/fakemail to run.  */
 199
 200 #ifdef SMAIL
 201 #define MAIL_PROGRAM_NAME "/usr/bin/smail -q0"
 202 #else
 203 #define MAIL_PROGRAM_NAME "/usr/lib/mail/execmail"
 204 #endif
 205
 206 /* Some variants have TIOCGETC, but the structures to go with it
 207    are not declared.  */
 208
 209 #define BROKEN_TIOCGETC
 210
 211 /* arch-tag: 71d3985d-4e53-4572-8276-5dce26bbd076
 212    (do not change this comment) */