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code.delx.au - gnu-emacs/blob - src/s/darwin.h
1 /* System description header file for Darwin (Mac OS X).
2 Copyright (C) 2001, 2002, 2003, 2004, 2005,
3 2006, 2007 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
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.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
24 * Define symbols to identify the version of Unix this is.
25 * Define all the symbols that apply correctly.
35 /* BSD4_3 and BSD4_4 are already defined in sys/param.h */
41 #if 0 /* Don't define DARWIN on Mac OS X because CoreFoundation.h uses
42 it to distinguish Mac OS X from bare Darwin. */
48 /* MAC_OS is used to conditionally compile code common to both MAC_OS8
53 /* We need a little extra space, see ../../lisp/loadup.el. */
54 #define SYSTEM_PURESIZE_EXTRA 30000
58 /* SYSTEM_TYPE should indicate the kind of system you are using.
59 It sets the Lisp variable system-type. */
61 #define SYSTEM_TYPE "darwin"
63 /* NOMULTIPLEJOBS should be defined if your system's shell
64 does not have "job control" (the ability to stop a program,
65 run some other program, then continue the first one). */
67 /* #define NOMULTIPLEJOBS */
69 /* Emacs can read input using SIGIO and buffering characters itself,
70 or using CBREAK mode and making C-g cause SIGINT.
71 The choice is controlled by the variable interrupt_input.
73 Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
75 Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
76 to indicate whether or not signal-driven I/O is possible. It uses
77 INTERRUPT_INPUT to decide whether to use it by default.
79 SIGIO can be used only on systems that implement it (4.2 and 4.3).
80 CBREAK mode has two disadvantages
81 1) At least in 4.2, it is impossible to handle the Meta key properly.
82 I hear that in system V this problem does not exist.
83 2) Control-G causes output to be discarded.
84 I do not know whether this can be fixed in system V.
86 Another method of doing input is planned but not implemented.
87 It would have Emacs fork off a separate process
88 to read the input and send it to the true Emacs process
91 #define INTERRUPT_INPUT
93 /* Letter to use in finding device name of first pty,
94 if system supports pty's. 'a' means it is /dev/ptya0 */
96 #define FIRST_PTY_LETTER 'p'
99 * Define HAVE_TERMIOS if the system provides POSIX-style
100 * functions and macros for terminal control.
102 * Define HAVE_TERMIO if the system provides sysV-style ioctls
103 * for terminal control.
105 * Do not define both. HAVE_TERMIOS is preferred, if it is
106 * supported on your system.
110 /* #define HAVE_TERMIO */
115 * Define HAVE_PTYS if the system supports pty devices.
116 * Note: PTYs are broken on darwin <6. Use at your own risk.
122 * PTYs only work correctly on Darwin 7 or higher. So make the
123 * default for process-connection-type dependent on the kernel
126 #define MIN_PTY_KERNEL_VERSION '7'
129 * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
130 * The 4.2 opendir, etc., library functions.
133 /* #define NONSYSTEM_DIR_LIBRARY */
135 /* Define this symbol if your system has the functions bcopy, etc. */
139 /* subprocesses should be defined if you want to
140 have code for asynchronous subprocesses
141 (as used in M-x compile and M-x shell).
142 This is generally OS dependent, and not supported
143 under most USG systems. */
147 /* If your system uses COFF (Common Object File Format) then define the
148 preprocessor symbol "COFF". */
152 /* define MAIL_USE_FLOCK if the mailer uses flock
153 to interlock access to /usr/spool/mail/$USER.
154 The alternative is that a lock file named
155 /usr/spool/mail/$USER.lock. */
157 #define MAIL_USE_FLOCK
159 /* Define CLASH_DETECTION if you want lock files to be written
160 so that Emacs can tell instantly when you try to modify
161 a file that someone else has modified in his Emacs. */
163 #define CLASH_DETECTION
165 /* Define this if your operating system declares signal handlers to
166 have a type other than the usual. `The usual' is `void' for ANSI C
167 systems (i.e. when the __STDC__ macro is defined), and `int' for
168 pre-ANSI systems. If you're using GCC on an older system, __STDC__
169 will be defined, but the system's include files will still say that
170 signal returns int or whatever; in situations like that, define
171 this to be what the system's include files want. */
172 /* #define SIGTYPE int */
174 /* If the character used to separate elements of the executable path
175 is not ':', #define this to be the appropriate character constant. */
176 /* #define SEPCHAR ':' */
178 /* Define this if the system can use mmap for buffer text allocation. */
179 /* #define USE_MMAP_FOR_BUFFERS 1 */
181 /* ============================================================ */
183 /* Here, add any special hacks needed
184 to make Emacs work on this system. For example,
185 you might define certain system call names that don't
186 exist on your system, or that do different things on
187 your system and must be used only through an encapsulation
188 (Which you should place, by convention, in sysdep.c). */
190 /* Some compilers tend to put everything declared static
191 into the initialized data area, which becomes pure after dumping Emacs.
192 On these systems, you must #define static as nothing to foil this.
193 Note that emacs carefully avoids static vars inside functions. */
197 /* If the system's imake configuration file defines `NeedWidePrototypes'
198 as `NO', we must define NARROWPROTO manually. Such a define is
199 generated in the Makefile generated by `xmkmf'. If we don't
200 define NARROWPROTO, we will see the wrong function prototypes
201 for X functions taking float or double parameters. */
203 /* #define NARROWPROTO 1 */
205 /* ============================================================ */
207 /* After adding support for a new system, modify the large case
208 statement in the `configure' script to recognize reasonable
209 configuration names, and add a description of the system to
212 If you've just fixed a problem in an existing configuration file,
213 you should also check `etc/MACHINES' to make sure its descriptions
214 of known problems in that configuration should be updated. */
217 /* Avoid the use of the name init_process (process.c) because it is
218 also the name of a Mach system call. */
219 #define init_process emacs_init_process
221 /* Used in dispnew.c. Copied from freebsd.h. */
222 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
224 /* System uses OXTABS instead of the expected TAB3. (Copied from
228 /* Darwin ld insists on the use of malloc routines in the System
230 #define SYSTEM_MALLOC
232 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */
235 /* In Carbon, asynchronous I/O (using SIGIO) can't be used for window
236 events because they don't come from sockets, even though it works
239 #define NO_SOCK_SIGIO
242 /* Extra initialization calls in main for Mac OS X system type. */
244 #define SYMS_SYSTEM syms_of_mac()
247 /* Definitions for how to dump. Copied from nextstep.h. */
249 #define UNEXEC unexmacosx.o
251 #define START_FILES pre-crt0.o
253 /* start_of_text isn't actually used, so make it compile without error. */
254 #define TEXT_START (0)
256 /* This seems to be right for end_of_text, but it may not be used anyway. */
257 #define TEXT_END get_etext()
259 /* This seems to be right for end_of_data, but it may not be used anyway. */
260 #define DATA_END get_edata()
262 /* Definitions for how to compile & link. */
264 /* Indicate that we are compiling for Mac OS X. */
265 #define C_SWITCH_SYSTEM -fpascal-strings -DMAC_OSX
267 /* Link in the Carbon lib. */
269 #define LIBS_CARBON -framework Carbon -framework QuickTime
274 /* The -headerpad option tells ld (see man page) to leave room at the
275 end of the header for adding load commands. Needed for dumping.
276 0x690 is the total size of 30 segment load commands (at 56
278 #define LD_SWITCH_SYSTEM_TEMACS -prebind LIBS_CARBON -Xlinker -headerpad -Xlinker 690
280 #define C_SWITCH_SYSTEM_TEMACS -Dtemacs
282 /* The ncurses library has been moved out of the System framework in
283 Mac OS X 10.2. So if ./configure detects it, set the command-line
285 #ifdef HAVE_LIBNCURSES
286 #define LIBS_TERMCAP -lncurses
287 /* This prevents crashes when running Emacs in Terminal.app under
292 /* Link this program just by running cc. */
293 #define ORDINARY_LINK
295 /* We don't have a g library, so override the -lg LIBS_DEBUG switch. */
298 /* Adding -lm confuses the dynamic linker, so omit it. */
301 /* Tell src/Makefile.in to create files in the Mac OS X application
302 bundle mac/Emacs.app. */
304 #define OTHER_FILES macosx-app
308 /* Define the following so emacs symbols will not conflict with those
309 in the System framework. Otherwise -prebind will not work. */
311 /* Do not define abort in emacs.c. */
314 /* Do not define matherr in floatfns.c. */
318 /* The following solves the problem that Emacs hangs when evaluating
319 (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
321 #undef HAVE_WORKING_VFORK
324 /* Don't close pty in process.c to make it as controlling terminal.
325 It is already a controlling terminal of subprocess, because we did
327 #define DONT_REOPEN_PTY
330 #define malloc unexec_malloc
331 #define realloc unexec_realloc
332 #define free unexec_free
335 /* This makes create_process in process.c save and restore signal
336 handlers correctly. Suggested by Nozomu Ando.*/
337 #define POSIX_SIGNALS
339 /* Reroute calls to SELECT to the version defined in mac.c to fix the
340 problem of Emacs requiring an extra return to be typed to start
341 working when started from the command line. */
342 #if defined (HAVE_CARBON) && (defined (emacs) || defined (temacs))
343 #define select sys_select
346 /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the
348 #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
350 /* arch-tag: 481d443d-4f89-43ea-b5fb-49706d95fa41
351 (do not change this comment) */