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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 | 34 | /* SYSTEM_TYPE should indicate the kind of system you are using. |
e05aebe9 | 35 | It sets the Lisp variable system-type. */ |
e0f712ba AC |
36 | #define SYSTEM_TYPE "darwin" |
37 | ||
e0f712ba AC |
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. | |
41 | ||
42 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
43 | ||
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 | |
46 | INTERRUPT_INPUT to decide whether to use it by default. | |
47 | ||
48 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
49 | CBREAK mode has two disadvantages | |
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 | |
58 | through a pipe. */ | |
e0f712ba AC |
59 | #define INTERRUPT_INPUT |
60 | ||
61 | /* Letter to use in finding device name of first pty, | |
62 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
e0f712ba AC |
63 | #define FIRST_PTY_LETTER 'p' |
64 | ||
e0f712ba AC |
65 | #define NO_TERMIO |
66 | ||
e05aebe9 GM |
67 | /* Define HAVE_PTYS if the system supports pty devices. |
68 | Note: PTYs are broken on darwin <6. Use at your own risk. */ | |
e0f712ba | 69 | #define HAVE_PTYS |
e05aebe9 | 70 | /* Run only once. We need a `for'-loop because the code uses `continue'. */ |
be02381c | 71 | #define PTY_ITERATION int i; for (i = 0; i < 1; i++) |
658b9b93 YM |
72 | #define PTY_NAME_SPRINTF /* none */ |
73 | #define PTY_TTY_NAME_SPRINTF /* none */ | |
74 | /* Note that openpty may fork via grantpt on Mac OS X 10.4/Darwin 8. | |
75 | But we don't have to block SIGCHLD because it is blocked in the | |
76 | implementation of grantpt. */ | |
77 | #define PTY_OPEN \ | |
78 | do \ | |
79 | { \ | |
80 | int slave; \ | |
81 | if (openpty (&fd, &slave, pty_name, NULL, NULL) == -1) \ | |
82 | fd = -1; \ | |
83 | else \ | |
84 | emacs_close (slave); \ | |
85 | } \ | |
86 | while (0) | |
e0f712ba | 87 | |
e05aebe9 GM |
88 | /* PTYs only work correctly on Darwin 7 or higher. So make the default |
89 | for process-connection-type dependent on the kernel version. */ | |
bb4c0e89 | 90 | #define MIN_PTY_KERNEL_VERSION '7' |
a15252fd | 91 | |
e0f712ba AC |
92 | /* Define CLASH_DETECTION if you want lock files to be written |
93 | so that Emacs can tell instantly when you try to modify | |
94 | a file that someone else has modified in his Emacs. */ | |
e0f712ba AC |
95 | #define CLASH_DETECTION |
96 | ||
e0f712ba AC |
97 | /* Avoid the use of the name init_process (process.c) because it is |
98 | also the name of a Mach system call. */ | |
99 | #define init_process emacs_init_process | |
100 | ||
e0f712ba AC |
101 | /* Used in dispnew.c. Copied from freebsd.h. */ |
102 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base) | |
103 | ||
e05aebe9 | 104 | /* System uses OXTABS instead of the expected TAB3. (Copied from bsd386.h.) */ |
e0f712ba AC |
105 | #define TAB3 OXTABS |
106 | ||
e0f712ba AC |
107 | /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */ |
108 | #define HAVE_SOCKETS | |
109 | ||
e0f712ba | 110 | /* Definitions for how to compile & link. */ |
edfda783 | 111 | #ifdef HAVE_NS |
edfda783 | 112 | #define SYSTEM_PURESIZE_EXTRA 200000 |
eb21eab5 | 113 | #endif |
640a0770 | 114 | |
2a10213c CY |
115 | /* On Darwin, res_init appears not to be useful: see bug#562 and |
116 | http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html */ | |
2a10213c CY |
117 | #undef HAVE_RES_INIT |
118 | #undef HAVE_LIBRESOLV | |
119 | ||
b1f52161 | 120 | #ifdef emacs |
14145fa3 AR |
121 | #define malloc unexec_malloc |
122 | #define realloc unexec_realloc | |
123 | #define free unexec_free | |
e05aebe9 | 124 | /* Don't use posix_memalign because it is not compatible with unexmacosx.c. */ |
890617cb | 125 | #undef HAVE_POSIX_MEMALIGN |
14145fa3 AR |
126 | #endif |
127 | ||
e0f712ba AC |
128 | /* Define the following so emacs symbols will not conflict with those |
129 | in the System framework. Otherwise -prebind will not work. */ | |
130 | ||
131 | /* Do not define abort in emacs.c. */ | |
132 | #define NO_ABORT | |
133 | ||
134 | /* Do not define matherr in floatfns.c. */ | |
135 | #define NO_MATHERR | |
136 | ||
511ca371 AC |
137 | /* The following solves the problem that Emacs hangs when evaluating |
138 | (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile | |
69955d31 YM |
139 | does not exist. Also, setsid is not allowed in the vfork child's |
140 | context as of Darwin 9/Mac OS X 10.5. */ | |
511ca371 AC |
141 | #undef HAVE_WORKING_VFORK |
142 | #define vfork fork | |
a7a4eb95 YM |
143 | |
144 | /* Don't close pty in process.c to make it as controlling terminal. | |
145 | It is already a controlling terminal of subprocess, because we did | |
146 | ioctl TIOCSCTTY. */ | |
5cb724f0 | 147 | #define DONT_REOPEN_PTY |
09740ad8 | 148 | |
e05aebe9 | 149 | /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the stack. */ |
3f080e4e | 150 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS |