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e0f712ba | 1 | /* System description header file for Darwin (Mac OS X). |
4b158629 | 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
114f9c96 | 3 | 2008, 2009, 2010 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 | ||
21 | /* | |
22 | * Define symbols to identify the version of Unix this is. | |
23 | * Define all the symbols that apply correctly. | |
24 | */ | |
25 | ||
e0f712ba AC |
26 | #define BSD4_2 |
27 | /* BSD4_3 and BSD4_4 are already defined in sys/param.h */ | |
e0f712ba | 28 | #define BSD_SYSTEM |
e0f712ba | 29 | |
14145fa3 AR |
30 | /* More specific than the above two. We cannot use __APPLE__ as this |
31 | may not be defined on non-OSX Darwin, and we cannot define DARWIN | |
32 | here because Panther and lower CoreFoundation.h uses DARWIN to | |
33 | distinguish OS X from pure Darwin. */ | |
34 | ||
35 | #define DARWIN_OS | |
36 | ||
37 | ||
e0f712ba AC |
38 | /* SYSTEM_TYPE should indicate the kind of system you are using. |
39 | It sets the Lisp variable system-type. */ | |
40 | ||
41 | #define SYSTEM_TYPE "darwin" | |
42 | ||
e0f712ba AC |
43 | /* Emacs can read input using SIGIO and buffering characters itself, |
44 | or using CBREAK mode and making C-g cause SIGINT. | |
45 | The choice is controlled by the variable interrupt_input. | |
46 | ||
47 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
48 | ||
49 | Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros | |
50 | to indicate whether or not signal-driven I/O is possible. It uses | |
51 | INTERRUPT_INPUT to decide whether to use it by default. | |
52 | ||
53 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
54 | CBREAK mode has two disadvantages | |
55 | 1) At least in 4.2, it is impossible to handle the Meta key properly. | |
56 | I hear that in system V this problem does not exist. | |
57 | 2) Control-G causes output to be discarded. | |
58 | I do not know whether this can be fixed in system V. | |
59 | ||
60 | Another method of doing input is planned but not implemented. | |
61 | It would have Emacs fork off a separate process | |
62 | to read the input and send it to the true Emacs process | |
63 | through a pipe. */ | |
64 | ||
65 | #define INTERRUPT_INPUT | |
66 | ||
67 | /* Letter to use in finding device name of first pty, | |
68 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
69 | ||
70 | #define FIRST_PTY_LETTER 'p' | |
71 | ||
72 | /* | |
73 | * Define HAVE_TERMIOS if the system provides POSIX-style | |
74 | * functions and macros for terminal control. | |
75 | * | |
76 | * Define HAVE_TERMIO if the system provides sysV-style ioctls | |
77 | * for terminal control. | |
78 | * | |
79 | * Do not define both. HAVE_TERMIOS is preferred, if it is | |
80 | * supported on your system. | |
81 | */ | |
82 | ||
83 | #define HAVE_TERMIOS | |
e0f712ba AC |
84 | |
85 | #define NO_TERMIO | |
86 | ||
87 | /* | |
88 | * Define HAVE_PTYS if the system supports pty devices. | |
d9e7c622 | 89 | * Note: PTYs are broken on darwin <6. Use at your own risk. |
e0f712ba AC |
90 | */ |
91 | ||
92 | #define HAVE_PTYS | |
93 | ||
d9e7c622 ST |
94 | /** |
95 | * PTYs only work correctly on Darwin 7 or higher. So make the | |
96 | * default for process-connection-type dependent on the kernel | |
97 | * version. | |
a15252fd | 98 | */ |
bb4c0e89 | 99 | #define MIN_PTY_KERNEL_VERSION '7' |
a15252fd | 100 | |
e0f712ba AC |
101 | /* Define this symbol if your system has the functions bcopy, etc. */ |
102 | ||
103 | #define BSTRING | |
104 | ||
e0f712ba AC |
105 | /* define MAIL_USE_FLOCK if the mailer uses flock |
106 | to interlock access to /usr/spool/mail/$USER. | |
107 | The alternative is that a lock file named | |
108 | /usr/spool/mail/$USER.lock. */ | |
109 | ||
110 | #define MAIL_USE_FLOCK | |
111 | ||
112 | /* Define CLASH_DETECTION if you want lock files to be written | |
113 | so that Emacs can tell instantly when you try to modify | |
114 | a file that someone else has modified in his Emacs. */ | |
115 | ||
116 | #define CLASH_DETECTION | |
117 | ||
e0f712ba AC |
118 | /* Avoid the use of the name init_process (process.c) because it is |
119 | also the name of a Mach system call. */ | |
120 | #define init_process emacs_init_process | |
121 | ||
e0f712ba AC |
122 | /* Used in dispnew.c. Copied from freebsd.h. */ |
123 | #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base) | |
124 | ||
e0f712ba AC |
125 | /* System uses OXTABS instead of the expected TAB3. (Copied from |
126 | bsd386.h.) */ | |
127 | #define TAB3 OXTABS | |
128 | ||
129 | /* Darwin ld insists on the use of malloc routines in the System | |
130 | framework. */ | |
131 | #define SYSTEM_MALLOC | |
132 | ||
133 | /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */ | |
134 | #define HAVE_SOCKETS | |
135 | ||
e0f712ba AC |
136 | /* Definitions for how to dump. Copied from nextstep.h. */ |
137 | ||
138 | #define UNEXEC unexmacosx.o | |
139 | ||
140 | #define START_FILES pre-crt0.o | |
141 | ||
142 | /* start_of_text isn't actually used, so make it compile without error. */ | |
143 | #define TEXT_START (0) | |
144 | ||
e0f712ba AC |
145 | /* Definitions for how to compile & link. */ |
146 | ||
edfda783 | 147 | #ifdef HAVE_NS |
2a10213c | 148 | #define LIBS_NSGUI -framework AppKit |
edfda783 AR |
149 | #define SYSTEM_PURESIZE_EXTRA 200000 |
150 | #define HEADERPAD_EXTRA 6C8 | |
2749d28e | 151 | #else /* !HAVE_NS */ |
14145fa3 | 152 | #define LIBS_NSGUI |
edfda783 | 153 | #define HEADERPAD_EXTRA 690 |
edfda783 | 154 | #endif /* !HAVE_NS */ |
640a0770 | 155 | |
2a10213c CY |
156 | /* On Darwin, res_init appears not to be useful: see bug#562 and |
157 | http://lists.gnu.org/archive/html/emacs-devel/2007-11/msg01467.html */ | |
158 | ||
159 | #undef HAVE_RES_INIT | |
160 | #undef HAVE_LIBRESOLV | |
161 | ||
640a0770 ST |
162 | /* The -headerpad option tells ld (see man page) to leave room at the |
163 | end of the header for adding load commands. Needed for dumping. | |
164 | 0x690 is the total size of 30 segment load commands (at 56 | |
edfda783 | 165 | each); under Cocoa 31 commands are required. */ |
14145fa3 | 166 | #define LD_SWITCH_SYSTEM_TEMACS -prebind LIBS_NSGUI -Xlinker -headerpad -Xlinker HEADERPAD_EXTRA |
e0f712ba AC |
167 | |
168 | #define C_SWITCH_SYSTEM_TEMACS -Dtemacs | |
169 | ||
14145fa3 AR |
170 | #ifdef temacs |
171 | #define malloc unexec_malloc | |
172 | #define realloc unexec_realloc | |
173 | #define free unexec_free | |
890617cb YM |
174 | /* Don't use posix_memalign because it is not compatible with |
175 | unexmacosx.c. */ | |
176 | #undef HAVE_POSIX_MEMALIGN | |
14145fa3 AR |
177 | #endif |
178 | ||
f00691a3 AC |
179 | /* The ncurses library has been moved out of the System framework in |
180 | Mac OS X 10.2. So if ./configure detects it, set the command-line | |
181 | option to use it. */ | |
182 | #ifdef HAVE_LIBNCURSES | |
183 | #define LIBS_TERMCAP -lncurses | |
ad8d730c AC |
184 | /* This prevents crashes when running Emacs in Terminal.app under |
185 | 10.2. */ | |
186 | #define TERMINFO | |
f00691a3 AC |
187 | #endif |
188 | ||
e0f712ba AC |
189 | /* Link this program just by running cc. */ |
190 | #define ORDINARY_LINK | |
191 | ||
e0f712ba AC |
192 | /* Adding -lm confuses the dynamic linker, so omit it. */ |
193 | #define LIB_MATH | |
194 | ||
e0f712ba AC |
195 | /* Define the following so emacs symbols will not conflict with those |
196 | in the System framework. Otherwise -prebind will not work. */ | |
197 | ||
198 | /* Do not define abort in emacs.c. */ | |
199 | #define NO_ABORT | |
200 | ||
201 | /* Do not define matherr in floatfns.c. */ | |
202 | #define NO_MATHERR | |
203 | ||
511ca371 AC |
204 | /* The following solves the problem that Emacs hangs when evaluating |
205 | (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile | |
69955d31 YM |
206 | does not exist. Also, setsid is not allowed in the vfork child's |
207 | context as of Darwin 9/Mac OS X 10.5. */ | |
511ca371 AC |
208 | #undef HAVE_WORKING_VFORK |
209 | #define vfork fork | |
a7a4eb95 YM |
210 | |
211 | /* Don't close pty in process.c to make it as controlling terminal. | |
212 | It is already a controlling terminal of subprocess, because we did | |
213 | ioctl TIOCSCTTY. */ | |
5cb724f0 | 214 | #define DONT_REOPEN_PTY |
09740ad8 | 215 | |
7a262394 SM |
216 | /* This makes create_process in process.c save and restore signal |
217 | handlers correctly. Suggested by Nozomu Ando.*/ | |
218 | #define POSIX_SIGNALS | |
219 | ||
3f080e4e AC |
220 | /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the |
221 | stack. */ | |
222 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS | |
223 | ||
ab5796a9 MB |
224 | /* arch-tag: 481d443d-4f89-43ea-b5fb-49706d95fa41 |
225 | (do not change this comment) */ |