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.
   4
   5 This file is part of GNU Emacs.
   6
   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 3, or (at your option)
  10 any later version.
  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
  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.  */
  21
  22
  23 /*
  24  *      Define symbols to identify the version of Unix this is.
  25  *      Define all the symbols that apply correctly.
  26  */
  27
  28 /* #define UNIPLUS */
  29 /* #define USG5 */
  30 /* #define USG */
  31 /* #define HPUX */
  32 /* #define UMAX */
  33 /* #define BSD4_1 */
  34 #define BSD4_2
  35 /* BSD4_3 and BSD4_4 are already defined in sys/param.h */
  36 /* #define BSD4_3 */
  37 /* #define BSD4_4 */
  38 #define BSD_SYSTEM
  39 /* #define VMS */
  40
  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.  */
  43 #ifndef DARWIN
  44 #define DARWIN 1
  45 #endif
  46 #endif
  47
  48 /* MAC_OS is used to conditionally compile code common to both MAC_OS8
  49    and MAC_OSX.  */
  50 #ifdef MAC_OSX
  51 #ifdef HAVE_CARBON
  52 #define MAC_OS
  53 /* We need a little extra space, see ../../lisp/loadup.el. */
  54 #define SYSTEM_PURESIZE_EXTRA 30000
  55 #endif
  56 #endif
  57
  58 /* SYSTEM_TYPE should indicate the kind of system you are using.
  59  It sets the Lisp variable system-type.  */
  60
  61 #define SYSTEM_TYPE "darwin"
  62
  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).  */
  66
  67 /* #define NOMULTIPLEJOBS */
  68
  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.
  72
  73    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  74
  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.
  78
  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.
  85
  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
  89    through a pipe. */
  90
  91 #define INTERRUPT_INPUT
  92
  93 /* Letter to use in finding device name of first pty,
  94   if system supports pty's.  'a' means it is /dev/ptya0  */
  95
  96 #define FIRST_PTY_LETTER 'p'
  97
  98 /*
  99  *      Define HAVE_TERMIOS if the system provides POSIX-style
 100  *      functions and macros for terminal control.
 101  *
 102  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
 103  *      for terminal control.
 104  *
 105  *      Do not define both.  HAVE_TERMIOS is preferred, if it is
 106  *      supported on your system.
 107  */
 108
 109 #define HAVE_TERMIOS
 110 /* #define HAVE_TERMIO */
 111
 112 #define NO_TERMIO
 113
 114 /*
 115  *      Define HAVE_PTYS if the system supports pty devices.
 116  *      Note: PTYs are broken on darwin <6.  Use at your own risk.
 117  */
 118
 119 #define HAVE_PTYS
 120
 121 /**
 122  * PTYs only work correctly on Darwin 7 or higher.  So make the
 123  * default for process-connection-type dependent on the kernel
 124  * version.
 125  */
 126 #define MIN_PTY_KERNEL_VERSION '7'
 127
 128 /*
 129  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 130  *      The 4.2 opendir, etc., library functions.
 131  */
 132
 133 /* #define NONSYSTEM_DIR_LIBRARY */
 134
 135 /* Define this symbol if your system has the functions bcopy, etc. */
 136
 137 #define BSTRING
 138
 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. */
 144
 145 #define subprocesses
 146
 147 /* If your system uses COFF (Common Object File Format) then define the
 148    preprocessor symbol "COFF". */
 149
 150 /* #define COFF */
 151
 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.  */
 156
 157 #define MAIL_USE_FLOCK
 158
 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.  */
 162
 163 #define CLASH_DETECTION
 164
 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 */
 173
 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 ':' */
 177
 178 /* Define this if the system can use mmap for buffer text allocation.  */
 179 /* #define USE_MMAP_FOR_BUFFERS 1 */
 180
 181 /* ============================================================ */
 182
 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).  */
 189
 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.  */
 194
 195 /* #define static */
 196
 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.  */
 202
 203 /*  #define NARROWPROTO 1 */
 204
 205 /* ============================================================ */
 206
 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
 210    `etc/MACHINES'.
 211
 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.  */
 215
 216
 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
 220
 221 /* Used in dispnew.c.  Copied from freebsd.h. */
 222 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
 223
 224 /* System uses OXTABS instead of the expected TAB3.  (Copied from
 225    bsd386.h.)  */
 226 #define TAB3 OXTABS
 227
 228 /* Darwin ld insists on the use of malloc routines in the System
 229    framework.  */
 230 #define SYSTEM_MALLOC
 231
 232 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
 233 #define HAVE_SOCKETS
 234
 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
 237    fine on tty's.  */
 238 #ifdef HAVE_CARBON
 239 #define NO_SOCK_SIGIO
 240 #endif
 241
 242 /* Extra initialization calls in main for Mac OS X system type.  */
 243 #ifdef HAVE_CARBON
 244 #define SYMS_SYSTEM syms_of_mac()
 245 #endif
 246
 247 /* Definitions for how to dump.  Copied from nextstep.h.  */
 248
 249 #define UNEXEC unexmacosx.o
 250
 251 #define START_FILES pre-crt0.o
 252
 253 /* start_of_text isn't actually used, so make it compile without error.  */
 254 #define TEXT_START (0)
 255
 256 /* This seems to be right for end_of_text, but it may not be used anyway.  */
 257 #define TEXT_END get_etext()
 258
 259 /* This seems to be right for end_of_data, but it may not be used anyway.  */
 260 #define DATA_END get_edata()
 261
 262 /* Definitions for how to compile & link.  */
 263
 264 /* Indicate that we are compiling for Mac OS X.  */
 265 #define C_SWITCH_SYSTEM -fpascal-strings -DMAC_OSX
 266
 267 /* Link in the Carbon lib. */
 268 #ifdef HAVE_CARBON
 269 #define LIBS_CARBON -framework Carbon -framework QuickTime
 270 #else
 271 #define LIBS_CARBON
 272 #endif
 273
 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
 277    each).  */
 278 #define LD_SWITCH_SYSTEM_TEMACS -prebind LIBS_CARBON -Xlinker -headerpad -Xlinker 690
 279
 280 #define C_SWITCH_SYSTEM_TEMACS -Dtemacs
 281
 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
 284    option to use it.  */
 285 #ifdef HAVE_LIBNCURSES
 286 #define LIBS_TERMCAP -lncurses
 287 /* This prevents crashes when running Emacs in Terminal.app under
 288    10.2.  */
 289 #define TERMINFO
 290 #endif
 291
 292 /* Link this program just by running cc.  */
 293 #define ORDINARY_LINK
 294
 295 /* We don't have a g library, so override the -lg LIBS_DEBUG switch.  */
 296 #define LIBS_DEBUG
 297
 298 /* Adding -lm confuses the dynamic linker, so omit it.  */
 299 #define LIB_MATH
 300
 301 /* Tell src/Makefile.in to create files in the Mac OS X application
 302    bundle mac/Emacs.app.  */
 303 #ifdef HAVE_CARBON
 304 #define OTHER_FILES macosx-app
 305 #endif
 306
 307
 308 /* Define the following so emacs symbols will not conflict with those
 309    in the System framework.  Otherwise -prebind will not work.  */
 310
 311 /* Do not define abort in emacs.c.  */
 312 #define NO_ABORT
 313
 314 /* Do not define matherr in floatfns.c.  */
 315 #define NO_MATHERR
 316
 317
 318 /* The following solves the problem that Emacs hangs when evaluating
 319    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
 320    does not exist.  */
 321 #undef HAVE_WORKING_VFORK
 322 #define vfork fork
 323
 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
 326    ioctl TIOCSCTTY.  */
 327 #define DONT_REOPEN_PTY
 328
 329 #ifdef temacs
 330 #define malloc unexec_malloc
 331 #define realloc unexec_realloc
 332 #define free unexec_free
 333 #endif
 334
 335 /* This makes create_process in process.c save and restore signal
 336    handlers correctly.  Suggested by Nozomu Ando.*/
 337 #define POSIX_SIGNALS
 338
 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
 344 #endif
 345
 346 /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the
 347    stack.  */
 348 #define GC_MARK_STACK   GC_MAKE_GCPROS_NOOPS
 349
 350 /* arch-tag: 481d443d-4f89-43ea-b5fb-49706d95fa41
 351    (do not change this comment) */