src/s/xenix.h

   1 /* Definitions file for GNU Emacs running SCO Xenix 386 Release 2.2
   2    Copyright (C) 1988, 1999 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 2, 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, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  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_SYSTEM */
  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 disadvantages:
  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_PTYS if the system supports pty devices.
  83  */
  84
  85 /* #define HAVE_PTYS */
  86
  87 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
  88
  89 /* #define HAVE_SOCKETS */
  90
  91 /*
  92  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
  93  *      The 4.2 opendir, etc., library functions.
  94  */
  95
  96 #define NONSYSTEM_DIR_LIBRARY
  97
  98 /* Define this symbol if your system has the functions bcopy, etc. */
  99
 100 /* #define BSTRING */
 101
 102 /* subprocesses should be defined if you want to
 103  have code for asynchronous subprocesses
 104  (as used in M-x compile and M-x shell).
 105  This is supposed to work now on system V release 2.  */
 106
 107 #define subprocesses
 108
 109 /* If your system uses COFF (Common Object File Format) then define the
 110    preprocessor symbol "COFF". */
 111
 112 /* #define COFF */
 113
 114 /* Xenix requires completely different unexec code
 115    which lives in a separate file.  Specify the file name.  */
 116
 117 #define UNEXEC unexenix.o
 118
 119 /* define MAIL_USE_FLOCK if the mailer uses flock
 120    to interlock access to /usr/spool/mail/$USER.
 121    The alternative is that a lock file named
 122    /usr/spool/mail/$USER.lock.  */
 123
 124 #define MAIL_USE_FLOCK
 125
 126 /* Define CLASH_DETECTION if you want lock files to be written
 127    so that Emacs can tell instantly when you try to modify
 128    a file that someone else has modified in his Emacs.  */
 129
 130 /* The way this is implemented requires long filenames... */
 131 /* #define CLASH_DETECTION */
 132
 133 /* Define SHORTNAMES if the C compiler can distinguish only
 134    short names.  It means that the stuff in ../shortnames
 135    must be run to convert the long names to short ones.  */
 136
 137 /* #define SHORTNAMES */
 138
 139 /* Compensate for one incompatibility between Xenix and V.0.  */
 140 #define n_zeroes n_name[0]
 141
 142 /* The file containing the kernel's symbol table is called /xenix.  */
 143
 144 #define KERNEL_FILE "/xenix"
 145
 146 /* The symbol in the kernel where the load average is found
 147    is named avenrun.  */
 148
 149 #define LDAV_SYMBOL "_avenrun"
 150 \f
 151 /* Special hacks needed to make Emacs run on this system.  */
 152
 153 /*
 154  *      Make the sigsetmask function go away.  Don't know what the
 155  *      ramifications of this are, but doesn't seem possible to
 156  *      emulate it properly anyway at this point.
 157  */
 158
 159 #define sigsetmask(mask)        /* Null expansion */
 160
 161 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
 162    but they will run slower.  */
 163
 164 #define _setjmp setjmp
 165 #define _longjmp longjmp
 166
 167 /* On USG systems these have different names */
 168
 169 #define index strchr
 170 #define rindex strrchr
 171
 172 /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
 173
 174 #define ADDR_CORRECT(x) (x)
 175
 176 /* Prevent -lg from being used for debugging.  Not implemented?  */
 177
 178 #define LIBS_DEBUG
 179
 180 /* Switches for linking temacs.  */
 181
 182 #define LD_SWITCH_SYSTEM -i
 183
 184 /* Xenix implements sysV style IPC.  */
 185
 186 #define HAVE_SYSVIPC
 187
 188 /* Use terminfo instead of termcap.  */
 189
 190 /* Tell Emacs to use Terminfo.  */
 191
 192 #define TERMINFO
 193
 194 /* Tell Xenix curses to BE Terminfo.  */
 195 #define M_TERMINFO
 196
 197 /* Control program name for etc/fakemail to run.  */
 198
 199 #ifdef SMAIL
 200 #define MAIL_PROGRAM_NAME "/usr/bin/smail -q0"
 201 #else
 202 #define MAIL_PROGRAM_NAME "/usr/lib/mail/execmail"
 203 #endif
 204
 205 /* Some variants have TIOCGETC, but the structures to go with it
 206    are not declared.  */
 207
 208 #define BROKEN_TIOCGETC