src/s/template.h

   1 /* Template for system description header files.
   2    This file describes the parameters that system description files
   3    should define or not.
   4    Copyright (C) 1985, 1986, 1992 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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 UNIPLUS */
  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 */
  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 "berkeley-unix"
  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
  54    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  55
  56    Emacs uses the presence or absence of the SIGIO macro to indicate
  57    whether or not signal-driven I/O is possible.  It uses
  58    INTERRUPT_INPUT to decide whether to use it by default.
  59
  60    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  61    CBREAK mode has two disadvatages
  62      1) At least in 4.2, it is impossible to handle the Meta key properly.
  63         I hear that in system V this problem does not exist.
  64      2) Control-G causes output to be discarded.
  65         I do not know whether this can be fixed in system V.
  66
  67    Another method of doing input is planned but not implemented.
  68    It would have Emacs fork off a separate process
  69    to read the input and send it to the true Emacs process
  70    through a pipe. */
  71
  72 #define INTERRUPT_INPUT
  73
  74 /* Letter to use in finding device name of first pty,
  75   if system supports pty's.  'a' means it is /dev/ptya0  */
  76
  77 #define FIRST_PTY_LETTER 'a'
  78
  79 /*
  80  *      Define HAVE_TERMIOS if the system provides POSIX-style
  81  *      functions and macros for terminal control.
  82  *
  83  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  84  *      for terminal control.
  85  *
  86  *      Do not define both.  HAVE_TERMIOS is prefered, if it is
  87  *      supported on your system.
  88  */
  89
  90 #define HAVE_TERMIOS
  91 /* #define HAVE_TERMIO */
  92
  93 /*
  94  *      Define HAVE_TIMEVAL if the system supports the BSD style clock values.
  95  *      Look in <sys/time.h> for a timeval structure.
  96  */
  97
  98 #define HAVE_TIMEVAL
  99
 100 /*
 101  *      Define HAVE_SELECT if the system supports the `select' system call.
 102  */
 103
 104 /* #define HAVE_SELECT */
 105
 106 /*
 107  *      Define HAVE_PTYS if the system supports pty devices.
 108  */
 109
 110 #define HAVE_PTYS
 111
 112 /*
 113  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 114  *      The 4.2 opendir, etc., library functions.
 115  */
 116
 117 #define NONSYSTEM_DIR_LIBRARY
 118
 119 /* Define this symbol if your system has the functions bcopy, etc. */
 120
 121 #define BSTRING
 122
 123 /* subprocesses should be defined if you want to
 124    have code for asynchronous subprocesses
 125    (as used in M-x compile and M-x shell).
 126    This is generally OS dependent, and not supported
 127    under most USG systems. */
 128
 129 #define subprocesses
 130
 131 /* If your system uses COFF (Common Object File Format) then define the
 132    preprocessor symbol "COFF". */
 133
 134 /* #define COFF */
 135
 136 /* define MAIL_USE_FLOCK if the mailer uses flock
 137    to interlock access to /usr/spool/mail/$USER.
 138    The alternative is that a lock file named
 139    /usr/spool/mail/$USER.lock.  */
 140
 141 #define MAIL_USE_FLOCK
 142
 143 /* Define CLASH_DETECTION if you want lock files to be written
 144    so that Emacs can tell instantly when you try to modify
 145    a file that someone else has modified in his Emacs.  */
 146
 147 #define CLASH_DETECTION
 148
 149 /* Define this if your operating system declares signal handlers to
 150    have a type other than the usual.  `The usual' is `void' for ANSI C
 151    systems (i.e. when the __STDC__ macro is defined), and `int' for
 152    pre-ANSI systems.  If you're using GCC on an older system, __STDC__
 153    will be defined, but the system's include files will still say that
 154    signal returns int or whatever; in situations like that, define
 155    this to be what the system's include files want.  */
 156 /* #define SIGTYPE int */
 157
 158 /* If the character used to separate elements of the executable path
 159    is not ':', #define this to be the appropriate character constant.  */
 160 /* #define SEPCHAR ':' */
 161
 162 /* Here, on a separate page, add any special hacks needed
 163    to make Emacs work on this system.  For example,
 164    you might define certain system call names that don't
 165    exist on your system, or that do different things on
 166    your system and must be used only through an encapsulation
 167    (Which you should place, by convention, in sysdep.c).  */
 168 \f
 169 /* Some compilers tend to put everything declared static
 170    into the initialized data area, which becomes pure after dumping Emacs.
 171    On these systems, you must #define static as nothing to foil this.
 172    Note that emacs carefully avoids static vars inside functions.  */
 173
 174 /* #define static */
 175
 176 \f
 177
 178 /* After adding support for a new system, modify the large case
 179    statement in the `configure' script to recognize reasonable
 180    configuration names, and add a description of the system to
 181    `etc/MACHINES'.
 182
 183    If you've just fixed a problem in an existing configuration file,
 184    you should also check `etc/MACHINES' to make sure its descriptions
 185    of known problems in that configuration should be updated.  */