code.delx.au - gnu-emacs/blob - 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, 2002, 2003, 2004,
   3                  2005, 2006 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 /*
  24  *      Define symbols to identify the version of Unix this is.
  25  *      Define all the symbols that apply correctly.
  26  */
  27
  28 #define USG                             /* System III, System V, etc */
  29
  30 #define USG5
  31
  32 #define USG5_3
  33
  34 /* SYSTEM_TYPE should indicate the kind of system you are using.
  35  It sets the Lisp variable system-type.  */
  36
  37 #define SYSTEM_TYPE "usg-unix-v"
  38
  39 /* nomultiplejobs should be defined if your system's shell
  40  does not have "job control" (the ability to stop a program,
  41  run some other program, then continue the first one).  */
  42
  43 #define NOMULTIPLEJOBS
  44
  45 /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
  46
  47 /* #define INTERRUPT_INPUT */
  48
  49 /* Letter to use in finding device name of first pty,
  50   if system supports pty's.  'p' means it is /dev/ptyp0  */
  51
  52 #define FIRST_PTY_LETTER 'p'
  53
  54 /*
  55  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  56  *      for terminal control.
  57  */
  58
  59 #define HAVE_TERMIO
  60
  61 /*
  62  *      Define HAVE_PTYS if the system supports pty devices.
  63  */
  64
  65 /* Some versions of V.3 have this, but not all.
  66    #define HAVE_PTYS
  67    #define SYSV_PTYS  */
  68
  69 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
  70
  71 /* #define HAVE_SOCKETS */
  72
  73 /*
  74  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
  75  *      The 4.2 opendir, etc., library functions.
  76  */
  77
  78 /* #define NONSYSTEM_DIR_LIBRARY */
  79
  80 /*
  81  *      Define SYSV_SYSTEM_DIR to use the V.3 getdents/readir
  82  *      library functions.  Almost, but not quite the same as
  83  *      the 4.2 functions
  84  */
  85 #define SYSV_SYSTEM_DIR
  86
  87 /* Define this symbol if your system has the functions bcopy, etc. */
  88
  89 /* #define BSTRING */
  90
  91 /* subprocesses should be defined if you want to
  92  have code for asynchronous subprocesses
  93  (as used in M-x compile and M-x shell).
  94  This is supposed to work now on system V release 2.  */
  95
  96 #define subprocesses
  97
  98 /* If your system uses COFF (Common Object File Format) then define the
  99    preprocessor symbol "COFF". */
 100
 101 #define COFF
 102
 103 /* define MAIL_USE_FLOCK if the mailer uses flock
 104    to interlock access to /usr/spool/mail/$USER.
 105    The alternative is that a lock file named
 106    /usr/spool/mail/$USER.lock.  */
 107
 108 /* #define MAIL_USE_FLOCK */
 109
 110 /* Define CLASH_DETECTION if you want lock files to be written
 111    so that Emacs can tell instantly when you try to modify
 112    a file that someone else has modified in his Emacs.  */
 113
 114 /* #define CLASH_DETECTION */
 115
 116 /* Define SHORTNAMES if the C compiler can distinguish only
 117    short names.  It means that the stuff in ../shortnames
 118    must be run to convert the long names to short ones.  */
 119
 120 /* #define SHORTNAMES */
 121
 122 /* The file containing the kernel's symbol table is called /unix.  */
 123
 124 #define KERNEL_FILE "/unix"
 125
 126 /* The symbol in the kernel where the load average is found
 127    is named avenrun.  */
 128
 129 #define LDAV_SYMBOL "avenrun"
 130
 131 /* Define this if system V IPC is available.  */
 132
 133 #define HAVE_SYSVIPC
 134
 135 /* Special hacks needed to make Emacs run on this system.  */
 136
 137 /*
 138  *      Make the sigsetmask function go away.  Don't know what the
 139  *      ramifications of this are, but doesn't seem possible to
 140  *      emulate it properly anyway at this point.
 141  */
 142
 143 #define sigsetmask(mask)        /* Null expansion */
 144
 145 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
 146    but they will run slower.  */
 147
 148 #define _setjmp setjmp
 149 #define _longjmp longjmp
 150
 151 /* On USG systems these have different names */
 152 #ifndef HAVE_INDEX
 153 #define index strchr
 154 #endif /* ! defined (HAVE_INDEX) */
 155 #ifndef HAVE_RINDEX
 156 #define rindex strrchr
 157 #endif /* ! defined (HAVE_RINDEX) */
 158
 159 /* USG systems tend to put everything declared static
 160    into the initialized data area, which becomes pure after dumping Emacs.
 161    Foil this.  Emacs carefully avoids static vars inside functions.  */
 162
 163 #define static
 164
 165 /* Compiler bug bites on many systems when default ADDR_CORRECT is used.  */
 166
 167 #define ADDR_CORRECT(x) (x)
 168
 169 /* Use terminfo instead of termcap.  */
 170
 171 #define TERMINFO
 172
 173 /* Some variants have TIOCGETC, but the structures to go with it
 174    are not declared.  */
 175
 176 #define BROKEN_TIOCGETC
 177
 178 /* AT&T SVr3 X wants to be linked with shared libraries */
 179
 180 #define LIB_X11_LIB -lX11_s
 181
 182 /* X needs to talk on the network, so search the network library.  */
 183
 184 #define LIBX10_SYSTEM -lnsl_s
 185 #define LIBX11_SYSTEM -lpt -lnls -lnsl_s -lc_s
 186
 187 /* The docs for system V/386 suggest v.3 has sigpause,
 188    so let's give it a try.  */
 189 #define HAVE_SYSV_SIGPAUSE
 190
 191 /* Some variants have TIOCGWINSZ, but the structures to go with it
 192    are not declared.  */
 193
 194 #define BROKEN_TIOCGWINSZ
 195
 196 /* If we're using the System V X port, BSD bstring functions will be handy */
 197
 198 #ifdef HAVE_X_WINDOWS
 199 #define BSTRING
 200 #endif /* HAVE_X_WINDOWS */
 201
 202 /* Enable support for shared libraries in unexec.  */
 203
 204 #define USG_SHARED_LIBRARIES
 205
 206 /* On USG systems signal handlers return void */
 207
 208 #define SIGTYPE void
 209
 210 /* arch-tag: 2bca65fd-f015-44b9-a2aa-9f8170ce89ca
 211    (do not change this comment) */