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e0f712ba | 1 | /* System description header file for Darwin (Mac OS X). |
7490175b GM |
2 | |
3 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, | |
4 | 2010 Free Software Foundation, Inc. | |
e0f712ba AC |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
4b158629 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
e0f712ba | 9 | it under the terms of the GNU General Public License as published by |
4b158629 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
e0f712ba AC |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
4b158629 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
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20 | |
21 | ||
7490175b GM |
22 | /* Define symbols to identify the version of Unix this is. |
23 | * Define all the symbols that apply correctly. */ | |
e0f712ba | 24 | |
e0f712ba AC |
25 | #define BSD4_2 |
26 | /* BSD4_3 and BSD4_4 are already defined in sys/param.h */ | |
e0f712ba | 27 | #define BSD_SYSTEM |
e0f712ba | 28 | |
14145fa3 AR |
29 | /* More specific than the above two. We cannot use __APPLE__ as this |
30 | may not be defined on non-OSX Darwin, and we cannot define DARWIN | |
31 | here because Panther and lower CoreFoundation.h uses DARWIN to | |
32 | distinguish OS X from pure Darwin. */ | |
14145fa3 AR |
33 | #define DARWIN_OS |
34 | ||
35 | ||
e0f712ba AC |
36 | /* SYSTEM_TYPE should indicate the kind of system you are using. |
37 | It sets the Lisp variable system-type. */ | |
e0f712ba AC |
38 | #define SYSTEM_TYPE "darwin" |
39 | ||
e0f712ba AC |
40 | /* Emacs can read input using SIGIO and buffering characters itself, |
41 | or using CBREAK mode and making C-g cause SIGINT. | |
42 | The choice is controlled by the variable interrupt_input. | |
43 | ||
44 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
45 | ||
46 | Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros | |
47 | to indicate whether or not signal-driven I/O is possible. It uses | |
48 | INTERRUPT_INPUT to decide whether to use it by default. | |
49 | ||
50 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
51 | CBREAK mode has two disadvantages | |
52 | 1) At least in 4.2, it is impossible to handle the Meta key properly. | |
53 | I hear that in system V this problem does not exist. | |
54 | 2) Control-G causes output to be discarded. | |
55 | I do not know whether this can be fixed in system V. | |
56 | ||
57 | Another method of doing input is planned but not implemented. | |
58 | It would have Emacs fork off a separate process | |
59 | to read the input and send it to the true Emacs process | |
60 | through a pipe. */ | |
e0f712ba AC |
61 | #define INTERRUPT_INPUT |
62 | ||
63 | /* Letter to use in finding device name of first pty, | |
64 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
e0f712ba AC |
65 | #define FIRST_PTY_LETTER 'p' |
66 | ||
67 | /* | |
68 | * Define HAVE_TERMIOS if the system provides POSIX-style | |
69 | * functions and macros for terminal control. | |
70 | * | |
71 | * Define HAVE_TERMIO if the system provides sysV-style ioctls | |
72 | * for terminal control. | |
73 | * | |
74 | * Do not define both. HAVE_TERMIOS is preferred, if it is | |
75 | * supported on your system. | |
76 | */ | |
e0f712ba | 77 | #define HAVE_TERMIOS |
e0f712ba AC |
78 | #define NO_TERMIO |
79 | ||
80 | /* | |
81 | * Define HAVE_PTYS if the system supports pty devices. | |
d9e7c622 | 82 | * Note: PTYs are broken on darwin <6. Use at your own risk. |
e0f712ba | 83 | */ |
e0f712ba | 84 | #define HAVE_PTYS |
658b9b93 YM |
85 | /* Run only once. We need a `for'-loop because the code uses |
86 | `continue'. */ | |
87 | #define PTY_ITERATION for (i = 0; i < 1; i++) | |
88 | #define PTY_NAME_SPRINTF /* none */ | |
89 | #define PTY_TTY_NAME_SPRINTF /* none */ | |
90 | /* Note that openpty may fork via grantpt on Mac OS X 10.4/Darwin 8. | |
91 | But we don't have to block SIGCHLD because it is blocked in the | |
92 | implementation of grantpt. */ | |
93 | #define PTY_OPEN \ | |
94 | do \ | |
95 | { \ | |
96 | int slave; \ | |
97 | if (openpty (&fd, &slave, pty_name, NULL, NULL) == -1) \ | |
98 | fd = -1; \ | |
99 | else \ | |
100 | emacs_close (slave); \ | |
101 | } \ | |
102 | while (0) | |
e0f712ba | 103 | |
d9e7c622 ST |
104 | /** |
105 | * PTYs only work correctly on Darwin 7 or higher. So make the | |
106 | * default for process-connection-type dependent on the kernel | |
107 | * version. | |
a15252fd | 108 | */ |
bb4c0e89 | 109 | #define MIN_PTY_KERNEL_VERSION '7' |
a15252fd | 110 | |
e0f712ba | 111 | /* Define this symbol if your system has the functions bcopy, etc. */ |
e0f712ba AC |
112 | #define BSTRING |
113 | ||
e0f712ba AC |
114 | /* Define CLASH_DETECTION if you want lock files to be written |
115 | so that Emacs can tell instantly when you try to modify | |
116 | a file that someone else has modified in his Emacs. */ | |
e0f712ba AC |
117 | #define CLASH_DETECTION |
118 | ||
e0f712ba AC |
119 | /* Avoid the use of the name init_process (process.c) because it is |
120 | also the name of a Mach system call. */ | |
121 | #define init_process emacs_init_process | |
122 | ||
e0f712ba AC |
123 | /* Used in dispnew.c. Copied from freebsd.h. */ |
124 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base) | |
125 | ||
e0f712ba AC |
126 | /* System uses OXTABS instead of the expected TAB3. (Copied from |
127 | bsd386.h.) */ | |
128 | #define TAB3 OXTABS | |
129 | ||
130 | /* Darwin ld insists on the use of malloc routines in the System | |
131 | framework. */ | |
132 | #define SYSTEM_MALLOC | |
133 | ||
134 | /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */ | |
135 | #define HAVE_SOCKETS | |
136 | ||
e0f712ba | 137 | /* Definitions for how to dump. Copied from nextstep.h. */ |
e0f712ba AC |
138 | #define UNEXEC unexmacosx.o |
139 | ||
e0f712ba AC |
140 | /* start_of_text isn't actually used, so make it compile without error. */ |
141 | #define TEXT_START (0) | |
142 | ||
e0f712ba | 143 | /* Definitions for how to compile & link. */ |
edfda783 | 144 | #ifdef HAVE_NS |
edfda783 | 145 | #define SYSTEM_PURESIZE_EXTRA 200000 |
eb21eab5 | 146 | #endif |
640a0770 | 147 | |
2a10213c CY |
148 | /* On Darwin, res_init appears not to be useful: see bug#562 and |
149 | http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html */ | |
2a10213c CY |
150 | #undef HAVE_RES_INIT |
151 | #undef HAVE_LIBRESOLV | |
152 | ||
b1f52161 | 153 | #ifdef emacs |
14145fa3 AR |
154 | #define malloc unexec_malloc |
155 | #define realloc unexec_realloc | |
156 | #define free unexec_free | |
890617cb YM |
157 | /* Don't use posix_memalign because it is not compatible with |
158 | unexmacosx.c. */ | |
159 | #undef HAVE_POSIX_MEMALIGN | |
14145fa3 AR |
160 | #endif |
161 | ||
e0f712ba AC |
162 | /* Link this program just by running cc. */ |
163 | #define ORDINARY_LINK | |
164 | ||
e0f712ba AC |
165 | /* Define the following so emacs symbols will not conflict with those |
166 | in the System framework. Otherwise -prebind will not work. */ | |
167 | ||
168 | /* Do not define abort in emacs.c. */ | |
169 | #define NO_ABORT | |
170 | ||
171 | /* Do not define matherr in floatfns.c. */ | |
172 | #define NO_MATHERR | |
173 | ||
511ca371 AC |
174 | /* The following solves the problem that Emacs hangs when evaluating |
175 | (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile | |
69955d31 YM |
176 | does not exist. Also, setsid is not allowed in the vfork child's |
177 | context as of Darwin 9/Mac OS X 10.5. */ | |
511ca371 AC |
178 | #undef HAVE_WORKING_VFORK |
179 | #define vfork fork | |
a7a4eb95 YM |
180 | |
181 | /* Don't close pty in process.c to make it as controlling terminal. | |
182 | It is already a controlling terminal of subprocess, because we did | |
183 | ioctl TIOCSCTTY. */ | |
5cb724f0 | 184 | #define DONT_REOPEN_PTY |
09740ad8 | 185 | |
3f080e4e AC |
186 | /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the |
187 | stack. */ | |
188 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS | |
189 | ||
ab5796a9 MB |
190 | /* arch-tag: 481d443d-4f89-43ea-b5fb-49706d95fa41 |
191 | (do not change this comment) */ |