Move MAIL_USE_FLOCK, MAIL_USE_LOCKF, BLESSMAIL_TARGET from cpp to configure.
[bpt/emacs.git] / src / s / template.h
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1/* Template for system description header files.
2 This file describes the parameters that system description files
3 should define or not.
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4
5Copyright (C) 1985, 1986, 1992, 1999, 2001, 2002, 2003, 2004, 2005,
6 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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7
8This file is part of GNU Emacs.
9
4b158629 10GNU Emacs is free software: you can redistribute it and/or modify
20c428fd 11it under the terms of the GNU General Public License as published by
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12the Free Software Foundation, either version 3 of the License, or
13(at your option) any later version.
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14
15GNU Emacs is distributed in the hope that it will be useful,
16but WITHOUT ANY WARRANTY; without even the implied warranty of
17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18GNU General Public License for more details.
19
20You should have received a copy of the GNU General Public License
4b158629 21along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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22
23
24/*
25 * Define symbols to identify the version of Unix this is.
26 * Define all the symbols that apply correctly.
27 */
28
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29/* #define USG5 */
30/* #define USG */
31/* #define HPUX */
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32/* #define BSD4_2 */
33/* #define BSD4_3 */
8e4c450d 34/* #define BSD_SYSTEM */
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35
36/* SYSTEM_TYPE should indicate the kind of system you are using.
37 It sets the Lisp variable system-type. */
38
39#define SYSTEM_TYPE "berkeley-unix"
40
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41/* Emacs can read input using SIGIO and buffering characters itself,
42 or using CBREAK mode and making C-g cause SIGINT.
43 The choice is controlled by the variable interrupt_input.
32de6484 44
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45 Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
46
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47 Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
48 to indicate whether or not signal-driven I/O is possible. It uses
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49 INTERRUPT_INPUT to decide whether to use it by default.
50
20c428fd 51 SIGIO can be used only on systems that implement it (4.2 and 4.3).
eb8c3be9 52 CBREAK mode has two disadvantages
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53 1) At least in 4.2, it is impossible to handle the Meta key properly.
54 I hear that in system V this problem does not exist.
55 2) Control-G causes output to be discarded.
56 I do not know whether this can be fixed in system V.
57
58 Another method of doing input is planned but not implemented.
59 It would have Emacs fork off a separate process
60 to read the input and send it to the true Emacs process
32de6484 61 through a pipe. */
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62
63#define INTERRUPT_INPUT
64
65/* Letter to use in finding device name of first pty,
66 if system supports pty's. 'a' means it is /dev/ptya0 */
67
68#define FIRST_PTY_LETTER 'a'
69
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70/*
71 * Define HAVE_TERMIOS if the system provides POSIX-style
72 * functions and macros for terminal control.
161aa2f8 73 *
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74 * Define HAVE_TERMIO if the system provides sysV-style ioctls
75 * for terminal control.
161aa2f8 76 *
eb8c3be9 77 * Do not define both. HAVE_TERMIOS is preferred, if it is
161aa2f8 78 * supported on your system.
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79 */
80
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81#define HAVE_TERMIOS
82/* #define HAVE_TERMIO */
b350a838 83
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84/*
85 * Define HAVE_PTYS if the system supports pty devices.
86 */
87
88#define HAVE_PTYS
89
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90/* Define this symbol if your system has the functions bcopy, etc. */
91
92#define BSTRING
93
77ccee09 94/* subprocesses should be undefined if you do NOT want to
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95 have code for asynchronous subprocesses
96 (as used in M-x compile and M-x shell).
77ccee09 97 Currently only MSDOS does not support this. */
20c428fd 98
77ccee09 99/* #undef subprocesses */
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100
101/* If your system uses COFF (Common Object File Format) then define the
102 preprocessor symbol "COFF". */
103
104/* #define COFF */
105
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106/* Define CLASH_DETECTION if you want lock files to be written
107 so that Emacs can tell instantly when you try to modify
108 a file that someone else has modified in his Emacs. */
109
110#define CLASH_DETECTION
111
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112/* Define this if your operating system declares signal handlers to
113 have a type other than the usual. `The usual' is `void' for ANSI C
114 systems (i.e. when the __STDC__ macro is defined), and `int' for
115 pre-ANSI systems. If you're using GCC on an older system, __STDC__
116 will be defined, but the system's include files will still say that
117 signal returns int or whatever; in situations like that, define
118 this to be what the system's include files want. */
119/* #define SIGTYPE int */
120
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121/* If the character used to separate elements of the executable path
122 is not ':', #define this to be the appropriate character constant. */
123/* #define SEPCHAR ':' */
124
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125/* Define this if the system can use mmap for buffer text allocation. */
126/* #define USE_MMAP_FOR_BUFFERS 1 */
326cdd74 127
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128/* ============================================================ */
129
130/* Here, add any special hacks needed
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131 to make Emacs work on this system. For example,
132 you might define certain system call names that don't
133 exist on your system, or that do different things on
134 your system and must be used only through an encapsulation
135 (Which you should place, by convention, in sysdep.c). */
f5070950 136
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137/* If the system's imake configuration file defines `NeedWidePrototypes'
138 as `NO', we must define NARROWPROTO manually. Such a define is
177c0ea7 139 generated in the Makefile generated by `xmkmf'. If we don't
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140 define NARROWPROTO, we will see the wrong function prototypes
141 for X functions taking float or double parameters. */
142
143/* #define NARROWPROTO 1 */
144
f5070950 145/* ============================================================ */
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146
147/* After adding support for a new system, modify the large case
148 statement in the `configure' script to recognize reasonable
149 configuration names, and add a description of the system to
150 `etc/MACHINES'.
151
152 If you've just fixed a problem in an existing configuration file,
153 you should also check `etc/MACHINES' to make sure its descriptions
154 of known problems in that configuration should be updated. */
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155
156/* arch-tag: 4b426b11-cb2e-4c0e-a488-e663f76a0515
157 (do not change this comment) */