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[bpt/emacs.git] / src / s / template.h
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JB
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 Free Software Foundation, Inc.
5
6This file is part of GNU Emacs.
7
8GNU Emacs is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 1, or (at your option)
11any later version.
12
13GNU Emacs is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GNU Emacs; see the file COPYING. If not, write to
20the 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 Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
54
55 SIGIO can be used only on systems that implement it (4.2 and 4.3).
56 CBREAK mode has two disadvatages
57 1) At least in 4.2, it is impossible to handle the Meta key properly.
58 I hear that in system V this problem does not exist.
59 2) Control-G causes output to be discarded.
60 I do not know whether this can be fixed in system V.
61
62 Another method of doing input is planned but not implemented.
63 It would have Emacs fork off a separate process
64 to read the input and send it to the true Emacs process
65 through a pipe.
66*/
67
68#define INTERRUPT_INPUT
69
70/* Letter to use in finding device name of first pty,
71 if system supports pty's. 'a' means it is /dev/ptya0 */
72
73#define FIRST_PTY_LETTER 'a'
74
75/*
76 * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
77 * Look in <sys/time.h> for a timeval structure.
78 */
79
80#define HAVE_TIMEVAL
81
82/*
83 * Define HAVE_SELECT if the system supports the `select' system call.
84 */
85
86/* #define HAVE_SELECT */
87
88/*
89 * Define HAVE_PTYS if the system supports pty devices.
90 */
91
92#define HAVE_PTYS
93
94/*
95 * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
96 * The 4.2 opendir, etc., library functions.
97 */
98
99#define NONSYSTEM_DIR_LIBRARY
100
101/* Define this symbol if your system has the functions bcopy, etc. */
102
103#define BSTRING
104
105/* subprocesses should be defined if you want to
106 have code for asynchronous subprocesses
107 (as used in M-x compile and M-x shell).
108 This is generally OS dependent, and not supported
109 under most USG systems. */
110
111#define subprocesses
112
113/* If your system uses COFF (Common Object File Format) then define the
114 preprocessor symbol "COFF". */
115
116/* #define COFF */
117
118/* define MAIL_USE_FLOCK if the mailer uses flock
119 to interlock access to /usr/spool/mail/$USER.
120 The alternative is that a lock file named
121 /usr/spool/mail/$USER.lock. */
122
123#define MAIL_USE_FLOCK
124
125/* Define CLASH_DETECTION if you want lock files to be written
126 so that Emacs can tell instantly when you try to modify
127 a file that someone else has modified in his Emacs. */
128
129#define CLASH_DETECTION
130
131/* Here, on a separate page, add any special hacks needed
132 to make Emacs work on this system. For example,
133 you might define certain system call names that don't
134 exist on your system, or that do different things on
135 your system and must be used only through an encapsulation
136 (Which you should place, by convention, in sysdep.c). */
137\f
138/* Some compilers tend to put everything declared static
139 into the initialized data area, which becomes pure after dumping Emacs.
140 On these systems, you must #define static as nothing to foil this.
141 Note that emacs carefully avoids static vars inside functions. */
142
143/* #define static */