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, 1999 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, Inc., 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23
  24 /*
  25  *      Define symbols to identify the version of Unix this is.
  26  *      Define all the symbols that apply correctly.
  27  */
  28
  29 /* #define UNIPLUS */
  30 /* #define USG5 */
  31 /* #define USG */
  32 /* #define HPUX */
  33 /* #define UMAX */
  34 /* #define BSD4_1 */
  35 /* #define BSD4_2 */
  36 /* #define BSD4_3 */
  37 /* #define BSD_SYSTEM */
  38 /* #define VMS */
  39
  40 /* SYSTEM_TYPE should indicate the kind of system you are using.
  41  It sets the Lisp variable system-type.  */
  42
  43 #define SYSTEM_TYPE "berkeley-unix"
  44
  45 /* NOMULTIPLEJOBS should be defined if your system's shell
  46  does not have "job control" (the ability to stop a program,
  47  run some other program, then continue the first one).  */
  48
  49 /* #define NOMULTIPLEJOBS */
  50
  51 /* Emacs can read input using SIGIO and buffering characters itself,
  52    or using CBREAK mode and making C-g cause SIGINT.
  53    The choice is controlled by the variable interrupt_input.
  54
  55    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  56
  57    Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
  58    to indicate whether or not signal-driven I/O is possible.  It uses
  59    INTERRUPT_INPUT to decide whether to use it by default.
  60
  61    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  62    CBREAK mode has two disadvantages
  63      1) At least in 4.2, it is impossible to handle the Meta key properly.
  64         I hear that in system V this problem does not exist.
  65      2) Control-G causes output to be discarded.
  66         I do not know whether this can be fixed in system V.
  67
  68    Another method of doing input is planned but not implemented.
  69    It would have Emacs fork off a separate process
  70    to read the input and send it to the true Emacs process
  71    through a pipe. */
  72
  73 #define INTERRUPT_INPUT
  74
  75 /* Letter to use in finding device name of first pty,
  76   if system supports pty's.  'a' means it is /dev/ptya0  */
  77
  78 #define FIRST_PTY_LETTER 'a'
  79
  80 /*
  81  *      Define HAVE_TERMIOS if the system provides POSIX-style
  82  *      functions and macros for terminal control.
  83  *
  84  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  85  *      for terminal control.
  86  *
  87  *      Do not define both.  HAVE_TERMIOS is preferred, if it is
  88  *      supported on your system.
  89  */
  90
  91 #define HAVE_TERMIOS
  92 /* #define HAVE_TERMIO */
  93
  94 /*
  95  *      Define HAVE_PTYS if the system supports pty devices.
  96  */
  97
  98 #define HAVE_PTYS
  99
 100 /*
 101  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 102  *      The 4.2 opendir, etc., library functions.
 103  */
 104
 105 #define NONSYSTEM_DIR_LIBRARY
 106
 107 /* Define this symbol if your system has the functions bcopy, etc. */
 108
 109 #define BSTRING
 110
 111 /* subprocesses should be defined if you want to
 112    have code for asynchronous subprocesses
 113    (as used in M-x compile and M-x shell).
 114    This is generally OS dependent, and not supported
 115    under most USG systems. */
 116
 117 #define subprocesses
 118
 119 /* If your system uses COFF (Common Object File Format) then define the
 120    preprocessor symbol "COFF". */
 121
 122 /* #define COFF */
 123
 124 /* define MAIL_USE_FLOCK if the mailer uses flock
 125    to interlock access to /usr/spool/mail/$USER.
 126    The alternative is that a lock file named
 127    /usr/spool/mail/$USER.lock.  */
 128
 129 #define MAIL_USE_FLOCK
 130
 131 /* Define CLASH_DETECTION if you want lock files to be written
 132    so that Emacs can tell instantly when you try to modify
 133    a file that someone else has modified in his Emacs.  */
 134
 135 #define CLASH_DETECTION
 136
 137 /* Define this if your operating system declares signal handlers to
 138    have a type other than the usual.  `The usual' is `void' for ANSI C
 139    systems (i.e. when the __STDC__ macro is defined), and `int' for
 140    pre-ANSI systems.  If you're using GCC on an older system, __STDC__
 141    will be defined, but the system's include files will still say that
 142    signal returns int or whatever; in situations like that, define
 143    this to be what the system's include files want.  */
 144 /* #define SIGTYPE int */
 145
 146 /* If the character used to separate elements of the executable path
 147    is not ':', #define this to be the appropriate character constant.  */
 148 /* #define SEPCHAR ':' */
 149
 150 /* Define this if the system can use mmap for buffer text allocation.  */
 151 /* #define USE_MMAP_FOR_BUFFERS 1 */
 152
 153 /* ============================================================ */
 154
 155 /* Here, add any special hacks needed
 156    to make Emacs work on this system.  For example,
 157    you might define certain system call names that don't
 158    exist on your system, or that do different things on
 159    your system and must be used only through an encapsulation
 160    (Which you should place, by convention, in sysdep.c).  */
 161
 162 /* Some compilers tend to put everything declared static
 163    into the initialized data area, which becomes pure after dumping Emacs.
 164    On these systems, you must #define static as nothing to foil this.
 165    Note that emacs carefully avoids static vars inside functions.  */
 166
 167 /* #define static */
 168
 169 /* If the system's imake configuration file defines `NeedWidePrototypes'
 170    as `NO', we must define NARROWPROTO manually.  Such a define is
 171    generated in the Makefile generated by `xmkmf'.  If we don't
 172    define NARROWPROTO, we will see the wrong function prototypes
 173    for X functions taking float or double parameters.  */
 174
 175 /*  #define NARROWPROTO 1 */
 176
 177 /* ============================================================ */
 178
 179 /* After adding support for a new system, modify the large case
 180    statement in the `configure' script to recognize reasonable
 181    configuration names, and add a description of the system to
 182    `etc/MACHINES'.
 183
 184    If you've just fixed a problem in an existing configuration file,
 185    you should also check `etc/MACHINES' to make sure its descriptions
 186    of known problems in that configuration should be updated.  */