Commit | Line | Data |
---|---|---|
e0f712ba | 1 | /* System description header file for Darwin (Mac OS X). |
e9bffc61 | 2 | |
acaf905b | 3 | Copyright (C) 2001-2012 Free Software Foundation, Inc. |
e0f712ba AC |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
4b158629 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
e0f712ba | 8 | it under the terms of the GNU General Public License as published by |
4b158629 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
e0f712ba AC |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
4b158629 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
e0f712ba AC |
19 | |
20 | ||
e05aebe9 GM |
21 | /* Define symbols to identify the version of Unix this is. |
22 | Define all the symbols that apply correctly. */ | |
e0f712ba AC |
23 | #define BSD4_2 |
24 | /* BSD4_3 and BSD4_4 are already defined in sys/param.h */ | |
e0f712ba | 25 | #define BSD_SYSTEM |
e0f712ba | 26 | |
14145fa3 AR |
27 | /* More specific than the above two. We cannot use __APPLE__ as this |
28 | may not be defined on non-OSX Darwin, and we cannot define DARWIN | |
29 | here because Panther and lower CoreFoundation.h uses DARWIN to | |
e05aebe9 | 30 | distinguish OS X from pure Darwin. */ |
14145fa3 AR |
31 | #define DARWIN_OS |
32 | ||
33 | ||
e0f712ba AC |
34 | /* Emacs can read input using SIGIO and buffering characters itself, |
35 | or using CBREAK mode and making C-g cause SIGINT. | |
36 | The choice is controlled by the variable interrupt_input. | |
37 | ||
38 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
39 | ||
40 | Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros | |
41 | to indicate whether or not signal-driven I/O is possible. It uses | |
42 | INTERRUPT_INPUT to decide whether to use it by default. | |
43 | ||
44 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
45 | CBREAK mode has two disadvantages | |
46 | 1) At least in 4.2, it is impossible to handle the Meta key properly. | |
47 | I hear that in system V this problem does not exist. | |
48 | 2) Control-G causes output to be discarded. | |
49 | I do not know whether this can be fixed in system V. | |
50 | ||
51 | Another method of doing input is planned but not implemented. | |
52 | It would have Emacs fork off a separate process | |
53 | to read the input and send it to the true Emacs process | |
54 | through a pipe. */ | |
e0f712ba AC |
55 | #define INTERRUPT_INPUT |
56 | ||
57 | /* Letter to use in finding device name of first pty, | |
58 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
e0f712ba AC |
59 | #define FIRST_PTY_LETTER 'p' |
60 | ||
e05aebe9 GM |
61 | /* Define HAVE_PTYS if the system supports pty devices. |
62 | Note: PTYs are broken on darwin <6. Use at your own risk. */ | |
e0f712ba | 63 | #define HAVE_PTYS |
e05aebe9 | 64 | /* Run only once. We need a `for'-loop because the code uses `continue'. */ |
be02381c | 65 | #define PTY_ITERATION int i; for (i = 0; i < 1; i++) |
658b9b93 YM |
66 | #define PTY_NAME_SPRINTF /* none */ |
67 | #define PTY_TTY_NAME_SPRINTF /* none */ | |
68 | /* Note that openpty may fork via grantpt on Mac OS X 10.4/Darwin 8. | |
69 | But we don't have to block SIGCHLD because it is blocked in the | |
70 | implementation of grantpt. */ | |
71 | #define PTY_OPEN \ | |
72 | do \ | |
73 | { \ | |
74 | int slave; \ | |
75 | if (openpty (&fd, &slave, pty_name, NULL, NULL) == -1) \ | |
76 | fd = -1; \ | |
77 | else \ | |
78 | emacs_close (slave); \ | |
79 | } \ | |
80 | while (0) | |
e0f712ba | 81 | |
e05aebe9 GM |
82 | /* PTYs only work correctly on Darwin 7 or higher. So make the default |
83 | for process-connection-type dependent on the kernel version. */ | |
bb4c0e89 | 84 | #define MIN_PTY_KERNEL_VERSION '7' |
a15252fd | 85 | |
e0f712ba AC |
86 | /* Define CLASH_DETECTION if you want lock files to be written |
87 | so that Emacs can tell instantly when you try to modify | |
88 | a file that someone else has modified in his Emacs. */ | |
e0f712ba AC |
89 | #define CLASH_DETECTION |
90 | ||
e0f712ba AC |
91 | /* Avoid the use of the name init_process (process.c) because it is |
92 | also the name of a Mach system call. */ | |
93 | #define init_process emacs_init_process | |
94 | ||
e05aebe9 | 95 | /* System uses OXTABS instead of the expected TAB3. (Copied from bsd386.h.) */ |
e0f712ba AC |
96 | #define TAB3 OXTABS |
97 | ||
e0f712ba AC |
98 | /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */ |
99 | #define HAVE_SOCKETS | |
100 | ||
e0f712ba | 101 | /* Definitions for how to compile & link. */ |
edfda783 | 102 | #ifdef HAVE_NS |
edfda783 | 103 | #define SYSTEM_PURESIZE_EXTRA 200000 |
eb21eab5 | 104 | #endif |
640a0770 | 105 | |
b1f52161 | 106 | #ifdef emacs |
14145fa3 AR |
107 | #define malloc unexec_malloc |
108 | #define realloc unexec_realloc | |
109 | #define free unexec_free | |
e05aebe9 | 110 | /* Don't use posix_memalign because it is not compatible with unexmacosx.c. */ |
890617cb | 111 | #undef HAVE_POSIX_MEMALIGN |
14145fa3 AR |
112 | #endif |
113 | ||
e0f712ba AC |
114 | /* Define the following so emacs symbols will not conflict with those |
115 | in the System framework. Otherwise -prebind will not work. */ | |
116 | ||
117 | /* Do not define abort in emacs.c. */ | |
118 | #define NO_ABORT | |
119 | ||
120 | /* Do not define matherr in floatfns.c. */ | |
121 | #define NO_MATHERR | |
122 | ||
511ca371 AC |
123 | /* The following solves the problem that Emacs hangs when evaluating |
124 | (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile | |
69955d31 YM |
125 | does not exist. Also, setsid is not allowed in the vfork child's |
126 | context as of Darwin 9/Mac OS X 10.5. */ | |
511ca371 AC |
127 | #undef HAVE_WORKING_VFORK |
128 | #define vfork fork |