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, 2008 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
  56 #endif
  57 #endif
  58
  59 /* SYSTEM_TYPE should indicate the kind of system you are using.
  60  It sets the Lisp variable system-type.  */
  61
  62 #define SYSTEM_TYPE "darwin"
  63
  64 /* NOMULTIPLEJOBS should be defined if your system's shell
  65  does not have "job control" (the ability to stop a program,
  66  run some other program, then continue the first one).  */
  67
  68 /* #define NOMULTIPLEJOBS */
  69
  70 /* Emacs can read input using SIGIO and buffering characters itself,
  71    or using CBREAK mode and making C-g cause SIGINT.
  72    The choice is controlled by the variable interrupt_input.
  73
  74    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  75
  76    Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
  77    to indicate whether or not signal-driven I/O is possible.  It uses
  78    INTERRUPT_INPUT to decide whether to use it by default.
  79
  80    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  81    CBREAK mode has two disadvantages
  82      1) At least in 4.2, it is impossible to handle the Meta key properly.
  83         I hear that in system V this problem does not exist.
  84      2) Control-G causes output to be discarded.
  85         I do not know whether this can be fixed in system V.
  86
  87    Another method of doing input is planned but not implemented.
  88    It would have Emacs fork off a separate process
  89    to read the input and send it to the true Emacs process
  90    through a pipe. */
  91
  92 #define INTERRUPT_INPUT
  93
  94 /* Letter to use in finding device name of first pty,
  95   if system supports pty's.  'a' means it is /dev/ptya0  */
  96
  97 #define FIRST_PTY_LETTER 'p'
  98
  99 /*
 100  *      Define HAVE_TERMIOS if the system provides POSIX-style
 101  *      functions and macros for terminal control.
 102  *
 103  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
 104  *      for terminal control.
 105  *
 106  *      Do not define both.  HAVE_TERMIOS is preferred, if it is
 107  *      supported on your system.
 108  */
 109
 110 #define HAVE_TERMIOS
 111 /* #define HAVE_TERMIO */
 112
 113 #define NO_TERMIO
 114
 115 /*
 116  *      Define HAVE_PTYS if the system supports pty devices.
 117  *      Note: PTYs are broken on darwin <6.  Use at your own risk.
 118  */
 119
 120 #define HAVE_PTYS
 121
 122 /**
 123  * PTYs only work correctly on Darwin 7 or higher.  So make the
 124  * default for process-connection-type dependent on the kernel
 125  * version.
 126  */
 127 #define MIN_PTY_KERNEL_VERSION '7'
 128
 129 /*
 130  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 131  *      The 4.2 opendir, etc., library functions.
 132  */
 133
 134 /* #define NONSYSTEM_DIR_LIBRARY */
 135
 136 /* Define this symbol if your system has the functions bcopy, etc. */
 137
 138 #define BSTRING
 139
 140 /* subprocesses should be defined if you want to
 141    have code for asynchronous subprocesses
 142    (as used in M-x compile and M-x shell).
 143    This is generally OS dependent, and not supported
 144    under most USG systems. */
 145
 146 #define subprocesses
 147
 148 /* If your system uses COFF (Common Object File Format) then define the
 149    preprocessor symbol "COFF". */
 150
 151 /* #define COFF */
 152
 153 /* define MAIL_USE_FLOCK if the mailer uses flock
 154    to interlock access to /usr/spool/mail/$USER.
 155    The alternative is that a lock file named
 156    /usr/spool/mail/$USER.lock.  */
 157
 158 #define MAIL_USE_FLOCK
 159
 160 /* Define CLASH_DETECTION if you want lock files to be written
 161    so that Emacs can tell instantly when you try to modify
 162    a file that someone else has modified in his Emacs.  */
 163
 164 #define CLASH_DETECTION
 165
 166 /* Define this if your operating system declares signal handlers to
 167    have a type other than the usual.  `The usual' is `void' for ANSI C
 168    systems (i.e. when the __STDC__ macro is defined), and `int' for
 169    pre-ANSI systems.  If you're using GCC on an older system, __STDC__
 170    will be defined, but the system's include files will still say that
 171    signal returns int or whatever; in situations like that, define
 172    this to be what the system's include files want.  */
 173 /* #define SIGTYPE int */
 174
 175 /* If the character used to separate elements of the executable path
 176    is not ':', #define this to be the appropriate character constant.  */
 177 /* #define SEPCHAR ':' */
 178
 179 /* Define this if the system can use mmap for buffer text allocation.  */
 180 /* #define USE_MMAP_FOR_BUFFERS 1 */
 181
 182 /* ============================================================ */
 183
 184 /* Here, add any special hacks needed
 185    to make Emacs work on this system.  For example,
 186    you might define certain system call names that don't
 187    exist on your system, or that do different things on
 188    your system and must be used only through an encapsulation
 189    (Which you should place, by convention, in sysdep.c).  */
 190
 191 /* Some compilers tend to put everything declared static
 192    into the initialized data area, which becomes pure after dumping Emacs.
 193    On these systems, you must #define static as nothing to foil this.
 194    Note that emacs carefully avoids static vars inside functions.  */
 195
 196 /* #define static */
 197
 198 /* If the system's imake configuration file defines `NeedWidePrototypes'
 199    as `NO', we must define NARROWPROTO manually.  Such a define is
 200    generated in the Makefile generated by `xmkmf'.  If we don't
 201    define NARROWPROTO, we will see the wrong function prototypes
 202    for X functions taking float or double parameters.  */
 203
 204 /*  #define NARROWPROTO 1 */
 205
 206 /* ============================================================ */
 207
 208 /* After adding support for a new system, modify the large case
 209    statement in the `configure' script to recognize reasonable
 210    configuration names, and add a description of the system to
 211    `etc/MACHINES'.
 212
 213    If you've just fixed a problem in an existing configuration file,
 214    you should also check `etc/MACHINES' to make sure its descriptions
 215    of known problems in that configuration should be updated.  */
 216
 217
 218 /* Avoid the use of the name init_process (process.c) because it is
 219    also the name of a Mach system call.  */
 220 #define init_process emacs_init_process
 221
 222 /* Used in dispnew.c.  Copied from freebsd.h. */
 223 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
 224
 225 /* System uses OXTABS instead of the expected TAB3.  (Copied from
 226    bsd386.h.)  */
 227 #define TAB3 OXTABS
 228
 229 /* Darwin ld insists on the use of malloc routines in the System
 230    framework.  */
 231 #define SYSTEM_MALLOC
 232
 233 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
 234 #define HAVE_SOCKETS
 235
 236 /* In Carbon, asynchronous I/O (using SIGIO) can't be used for window
 237    events because they don't come from sockets, even though it works
 238    fine on tty's.  */
 239 #ifdef HAVE_CARBON
 240 #define NO_SOCK_SIGIO
 241 #endif
 242
 243 /* Extra initialization calls in main for Mac OS X system type.  */
 244 #ifdef HAVE_CARBON
 245 #define SYMS_SYSTEM syms_of_mac()
 246 #endif
 247
 248 /* Definitions for how to dump.  Copied from nextstep.h.  */
 249
 250 #define UNEXEC unexmacosx.o
 251
 252 #define START_FILES pre-crt0.o
 253
 254 /* start_of_text isn't actually used, so make it compile without error.  */
 255 #define TEXT_START (0)
 256
 257 /* This seems to be right for end_of_text, but it may not be used anyway.  */
 258 #define TEXT_END get_etext()
 259
 260 /* This seems to be right for end_of_data, but it may not be used anyway.  */
 261 #define DATA_END get_edata()
 262
 263 /* Definitions for how to compile & link.  */
 264
 265 /* Indicate that we are compiling for Mac OS X.  */
 266 #define C_SWITCH_SYSTEM -fpascal-strings -DMAC_OSX
 267
 268 /* Link in the Carbon lib. */
 269 #ifdef HAVE_CARBON
 270 #define LIBS_CARBON -framework Carbon -framework QuickTime
 271 #else
 272 #define LIBS_CARBON
 273 #endif
 274
 275 /* The -headerpad option tells ld (see man page) to leave room at the
 276    end of the header for adding load commands.  Needed for dumping.
 277    0x690 is the total size of 30 segment load commands (at 56
 278    each).  */
 279 #define LD_SWITCH_SYSTEM_TEMACS -prebind LIBS_CARBON -Xlinker -headerpad -Xlinker 690
 280
 281 #define C_SWITCH_SYSTEM_TEMACS -Dtemacs
 282
 283 /* The ncurses library has been moved out of the System framework in
 284    Mac OS X 10.2.  So if ./configure detects it, set the command-line
 285    option to use it.  */
 286 #ifdef HAVE_LIBNCURSES
 287 #define LIBS_TERMCAP -lncurses
 288 /* This prevents crashes when running Emacs in Terminal.app under
 289    10.2.  */
 290 #define TERMINFO
 291 #endif
 292
 293 /* Link this program just by running cc.  */
 294 #define ORDINARY_LINK
 295
 296 /* We don't have a g library, so override the -lg LIBS_DEBUG switch.  */
 297 #define LIBS_DEBUG
 298
 299 /* Adding -lm confuses the dynamic linker, so omit it.  */
 300 #define LIB_MATH
 301
 302 /* Tell src/Makefile.in to create files in the Mac OS X application
 303    bundle mac/Emacs.app.  */
 304 #ifdef HAVE_CARBON
 305 #define OTHER_FILES macosx-app
 306 #endif
 307
 308
 309 /* Define the following so emacs symbols will not conflict with those
 310    in the System framework.  Otherwise -prebind will not work.  */
 311
 312 /* Do not define abort in emacs.c.  */
 313 #define NO_ABORT
 314
 315 /* Do not define matherr in floatfns.c.  */
 316 #define NO_MATHERR
 317
 318
 319 /* The following solves the problem that Emacs hangs when evaluating
 320    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
 321    does not exist.  */
 322 #undef HAVE_WORKING_VFORK
 323 #define vfork fork
 324
 325 /* Don't close pty in process.c to make it as controlling terminal.
 326    It is already a controlling terminal of subprocess, because we did
 327    ioctl TIOCSCTTY.  */
 328 #define DONT_REOPEN_PTY
 329
 330 #ifdef temacs
 331 #define malloc unexec_malloc
 332 #define realloc unexec_realloc
 333 #define free unexec_free
 334 #endif
 335
 336 /* This makes create_process in process.c save and restore signal
 337    handlers correctly.  Suggested by Nozomu Ando.*/
 338 #define POSIX_SIGNALS
 339
 340 /* Reroute calls to SELECT to the version defined in mac.c to fix the
 341    problem of Emacs requiring an extra return to be typed to start
 342    working when started from the command line.  */
 343 #if defined (HAVE_CARBON) && (defined (emacs) || defined (temacs))
 344 #define select sys_select
 345 #endif
 346
 347 /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the
 348    stack.  */
 349 #define GC_MARK_STACK   GC_MAKE_GCPROS_NOOPS
 350
 351 /* arch-tag: 481d443d-4f89-43ea-b5fb-49706d95fa41
 352    (do not change this comment) */