src/s/usg5-3.h

   1 /* Definitions file for GNU Emacs running on AT&T's System V Release 3
   2    Copyright (C) 1987, 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 /*
  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 #define USG5_3
  32
  33 /* SYSTEM_TYPE should indicate the kind of system you are using.
  34  It sets the Lisp variable system-type.  */
  35
  36 #define SYSTEM_TYPE "usg-unix-v"
  37
  38 /* nomultiplejobs should be defined if your system's shell
  39  does not have "job control" (the ability to stop a program,
  40  run some other program, then continue the first one).  */
  41
  42 #define NOMULTIPLEJOBS
  43
  44 /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
  45
  46 /* #define INTERRUPT_INPUT */
  47
  48 /* Letter to use in finding device name of first pty,
  49   if system supports pty's.  'p' means it is /dev/ptyp0  */
  50
  51 #define FIRST_PTY_LETTER 'p'
  52
  53 /*
  54  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  55  *      for terminal control.
  56  */
  57
  58 #define HAVE_TERMIO
  59
  60 /*
  61  *      Define HAVE_PTYS if the system supports pty devices.
  62  */
  63
  64 /* Some versions of V.3 have this, but not all.
  65    #define HAVE_PTYS
  66    #define SYSV_PTYS  */
  67
  68 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
  69
  70 /* #define HAVE_SOCKETS */
  71
  72 /*
  73  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
  74  *      The 4.2 opendir, etc., library functions.
  75  */
  76
  77 /* #define NONSYSTEM_DIR_LIBRARY */
  78
  79 /*
  80  *      Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
  81  *      library functions.  Almost, but not quite the same as
  82  *      the 4.2 functions
  83  */
  84 #define SYSV_SYSTEM_DIR
  85
  86 /* Define this symbol if your system has the functions bcopy, etc. */
  87
  88 /* #define BSTRING */
  89
  90 /* subprocesses should be defined if you want to
  91  have code for asynchronous subprocesses
  92  (as used in M-x compile and M-x shell).
  93  This is supposed to work now on system V release 2.  */
  94
  95 #define subprocesses
  96
  97 /* If your system uses COFF (Common Object File Format) then define the
  98    preprocessor symbol "COFF". */
  99
 100 #define COFF
 101
 102 /* define MAIL_USE_FLOCK if the mailer uses flock
 103    to interlock access to /usr/spool/mail/$USER.
 104    The alternative is that a lock file named
 105    /usr/spool/mail/$USER.lock.  */
 106
 107 /* #define MAIL_USE_FLOCK */
 108
 109 /* Define CLASH_DETECTION if you want lock files to be written
 110    so that Emacs can tell instantly when you try to modify
 111    a file that someone else has modified in his Emacs.  */
 112
 113 /* #define CLASH_DETECTION */
 114
 115 /* Define SHORTNAMES if the C compiler can distinguish only
 116    short names.  It means that the stuff in ../shortnames
 117    must be run to convert the long names to short ones.  */
 118
 119 /* #define SHORTNAMES */
 120
 121 /* The file containing the kernel's symbol table is called /unix.  */
 122
 123 #define KERNEL_FILE "/unix"
 124
 125 /* The symbol in the kernel where the load average is found
 126    is named avenrun.  */
 127
 128 #define LDAV_SYMBOL "avenrun"
 129
 130 /* Define this if system V IPC is available.  */
 131
 132 #define HAVE_SYSVIPC
 133
 134 /* Special hacks needed to make Emacs run on this system.  */
 135
 136 /*
 137  *      Make the sigsetmask function go away.  Don't know what the
 138  *      ramifications of this are, but doesn't seem possible to
 139  *      emulate it properly anyway at this point.
 140  */
 141
 142 #define sigsetmask(mask)        /* Null expansion */
 143
 144 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
 145    but they will run slower.  */
 146
 147 #define _setjmp setjmp
 148 #define _longjmp longjmp
 149
 150 /* On USG systems these have different names */
 151 #ifndef HAVE_INDEX
 152 #define index strchr
 153 #endif /* ! defined (HAVE_INDEX) */
 154 #ifndef HAVE_RINDEX
 155 #define rindex strrchr
 156 #endif /* ! defined (HAVE_RINDEX) */
 157
 158 /* USG systems tend to put everything declared static
 159    into the initialized data area, which becomes pure after dumping Emacs.
 160    Foil this.  Emacs carefully avoids static vars inside functions.  */
 161
 162 #define static
 163
 164 /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
 165
 166 #define ADDR_CORRECT(x) (x)
 167
 168 /* Use terminfo instead of termcap.  */
 169
 170 #define TERMINFO
 171
 172 /* Some variants have TIOCGETC, but the structures to go with it
 173    are not declared.  */
 174
 175 #define BROKEN_TIOCGETC
 176
 177 /* AT&T SVr3 X wants to be linked with shared libraries */
 178
 179 #define LIB_X11_LIB -lX11_s
 180
 181 /* X needs to talk on the network, so search the network library.  */
 182
 183 #define LIBX10_SYSTEM -lnsl_s
 184 #define LIBX11_SYSTEM -lpt -lnls -lnsl_s -lc_s
 185
 186 /* The docs for system V/386 suggest v.3 has sigpause,
 187    so let's give it a try.  */
 188 #define HAVE_SYSV_SIGPAUSE
 189
 190 /* Some variants have TIOCGWINSZ, but the structures to go with it
 191    are not declared.  */
 192
 193 #define BROKEN_TIOCGWINSZ
 194
 195 /* If we're using the System V X port, BSD bstring functions will be handy */
 196
 197 #ifdef HAVE_X_WINDOWS
 198 #define BSTRING
 199 #endif /* HAVE_X_WINDOWS */
 200
 201 /* Enable support for shared libraries in unexec.  */
 202
 203 #define USG_SHARED_LIBRARIES
 204
 205 /* On USG systems signal handlers return void */
 206
 207 #define SIGTYPE void