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20c428fd JB |
1 | /* Template for system description header files. |
2 | This file describes the parameters that system description files | |
3 | should define or not. | |
7490175b | 4 | |
73b0cd50 | 5 | Copyright (C) 1985-1986, 1992, 1999, 2001-2011 Free Software Foundation, Inc. |
20c428fd JB |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
4b158629 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
20c428fd | 10 | it under the terms of the GNU General Public License as published by |
4b158629 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
20c428fd JB |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4b158629 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
20c428fd JB |
21 | |
22 | ||
e05aebe9 GM |
23 | /* Define symbols to identify the version of Unix this is. |
24 | Define all the symbols that apply correctly. */ | |
20c428fd | 25 | |
20c428fd JB |
26 | /* #define USG5 */ |
27 | /* #define USG */ | |
28 | /* #define HPUX */ | |
20c428fd JB |
29 | /* #define BSD4_2 */ |
30 | /* #define BSD4_3 */ | |
8e4c450d | 31 | /* #define BSD_SYSTEM */ |
20c428fd JB |
32 | |
33 | /* SYSTEM_TYPE should indicate the kind of system you are using. | |
e05aebe9 | 34 | It sets the Lisp variable system-type. */ |
20c428fd JB |
35 | |
36 | #define SYSTEM_TYPE "berkeley-unix" | |
37 | ||
20c428fd JB |
38 | /* Emacs can read input using SIGIO and buffering characters itself, |
39 | or using CBREAK mode and making C-g cause SIGINT. | |
40 | The choice is controlled by the variable interrupt_input. | |
32de6484 | 41 | |
20c428fd JB |
42 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) |
43 | ||
bb7b4368 PE |
44 | Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros |
45 | to indicate whether or not signal-driven I/O is possible. It uses | |
32de6484 JB |
46 | INTERRUPT_INPUT to decide whether to use it by default. |
47 | ||
20c428fd | 48 | SIGIO can be used only on systems that implement it (4.2 and 4.3). |
eb8c3be9 | 49 | CBREAK mode has two disadvantages |
20c428fd JB |
50 | 1) At least in 4.2, it is impossible to handle the Meta key properly. |
51 | I hear that in system V this problem does not exist. | |
52 | 2) Control-G causes output to be discarded. | |
53 | I do not know whether this can be fixed in system V. | |
54 | ||
55 | Another method of doing input is planned but not implemented. | |
56 | It would have Emacs fork off a separate process | |
57 | to read the input and send it to the true Emacs process | |
e05aebe9 | 58 | through a pipe. */ |
20c428fd JB |
59 | #define INTERRUPT_INPUT |
60 | ||
61 | /* Letter to use in finding device name of first pty, | |
e05aebe9 | 62 | if system supports pty's. 'a' means it is /dev/ptya0. */ |
20c428fd JB |
63 | #define FIRST_PTY_LETTER 'a' |
64 | ||
e05aebe9 | 65 | /* Define HAVE_PTYS if the system supports pty devices. */ |
20c428fd JB |
66 | #define HAVE_PTYS |
67 | ||
77ccee09 | 68 | /* subprocesses should be undefined if you do NOT want to |
20c428fd JB |
69 | have code for asynchronous subprocesses |
70 | (as used in M-x compile and M-x shell). | |
e05aebe9 | 71 | Currently only MSDOS does not support this. */ |
20c428fd | 72 | |
77ccee09 | 73 | /* #undef subprocesses */ |
20c428fd | 74 | |
20c428fd JB |
75 | /* Define CLASH_DETECTION if you want lock files to be written |
76 | so that Emacs can tell instantly when you try to modify | |
77 | a file that someone else has modified in his Emacs. */ | |
20c428fd JB |
78 | #define CLASH_DETECTION |
79 | ||
d4198db9 JB |
80 | /* If the character used to separate elements of the executable path |
81 | is not ':', #define this to be the appropriate character constant. */ | |
82 | /* #define SEPCHAR ':' */ | |
83 | ||
f5070950 JB |
84 | /* ============================================================ */ |
85 | ||
e05aebe9 GM |
86 | /* Here, add any special hacks needed to make Emacs work on this |
87 | system. For example, you might define certain system call names | |
88 | that don't exist on your system, or that do different things on | |
89 | your system and must be used only through an encapsulation (which | |
90 | you should place, by convention, in sysdep.c). */ | |
f5070950 | 91 | |
2327e4a0 GM |
92 | /* If the system's imake configuration file defines `NeedWidePrototypes' |
93 | as `NO', we must define NARROWPROTO manually. Such a define is | |
177c0ea7 | 94 | generated in the Makefile generated by `xmkmf'. If we don't |
2327e4a0 GM |
95 | define NARROWPROTO, we will see the wrong function prototypes |
96 | for X functions taking float or double parameters. */ | |
97 | ||
98 | /* #define NARROWPROTO 1 */ | |
99 | ||
f5070950 | 100 | /* ============================================================ */ |
00b1a5fb JB |
101 | |
102 | /* After adding support for a new system, modify the large case | |
7b570c76 | 103 | statement in configure.in to recognize reasonable |
00b1a5fb JB |
104 | configuration names, and add a description of the system to |
105 | `etc/MACHINES'. | |
106 | ||
7b570c76 GM |
107 | Check for any tests of $opsys in configure.in, and add an entry |
108 | for the new system if needed. | |
109 | ||
00b1a5fb JB |
110 | If you've just fixed a problem in an existing configuration file, |
111 | you should also check `etc/MACHINES' to make sure its descriptions | |
112 | of known problems in that configuration should be updated. */ | |
ab5796a9 | 113 |