src/s/darwin.h

   1 /* System description header file for Darwin (Mac OS X).
   2    Copyright (C) 2001, 02, 2004  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 /*
  23  *      Define symbols to identify the version of Unix this is.
  24  *      Define all the symbols that apply correctly.
  25  */
  26
  27 /* #define UNIPLUS */
  28 /* #define USG5 */
  29 /* #define USG */
  30 /* #define HPUX */
  31 /* #define UMAX */
  32 /* #define BSD4_1 */
  33 #define BSD4_2
  34 /* BSD4_3 and BSD4_4 are already defined in sys/param.h */
  35 /* #define BSD4_3 */
  36 /* #define BSD4_4 */
  37 #define BSD_SYSTEM
  38 /* #define VMS */
  39
  40 #if 0 /* Don't define DARWIN on Mac OS X because CoreFoundation.h uses
  41          it to distinguish Mac OS X from bare Darwin.  */
  42 #ifndef DARWIN
  43 #define DARWIN 1
  44 #endif
  45 #endif
  46
  47 /* MAC_OS is used to conditionally compile code common to both MAC_OS8
  48    and MAC_OSX.  */
  49 #ifdef MAC_OSX
  50 #ifdef HAVE_CARBON
  51 #define MAC_OS
  52 #endif
  53 #endif
  54
  55 /* SYSTEM_TYPE should indicate the kind of system you are using.
  56  It sets the Lisp variable system-type.  */
  57
  58 #define SYSTEM_TYPE "darwin"
  59
  60 /* NOMULTIPLEJOBS should be defined if your system's shell
  61  does not have "job control" (the ability to stop a program,
  62  run some other program, then continue the first one).  */
  63
  64 /* #define NOMULTIPLEJOBS */
  65
  66 /* Emacs can read input using SIGIO and buffering characters itself,
  67    or using CBREAK mode and making C-g cause SIGINT.
  68    The choice is controlled by the variable interrupt_input.
  69
  70    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  71
  72    Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
  73    to indicate whether or not signal-driven I/O is possible.  It uses
  74    INTERRUPT_INPUT to decide whether to use it by default.
  75
  76    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  77    CBREAK mode has two disadvantages
  78      1) At least in 4.2, it is impossible to handle the Meta key properly.
  79         I hear that in system V this problem does not exist.
  80      2) Control-G causes output to be discarded.
  81         I do not know whether this can be fixed in system V.
  82
  83    Another method of doing input is planned but not implemented.
  84    It would have Emacs fork off a separate process
  85    to read the input and send it to the true Emacs process
  86    through a pipe. */
  87
  88 #define INTERRUPT_INPUT
  89
  90 /* Letter to use in finding device name of first pty,
  91   if system supports pty's.  'a' means it is /dev/ptya0  */
  92
  93 #define FIRST_PTY_LETTER 'p'
  94
  95 /*
  96  *      Define HAVE_TERMIOS if the system provides POSIX-style
  97  *      functions and macros for terminal control.
  98  *
  99  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
 100  *      for terminal control.
 101  *
 102  *      Do not define both.  HAVE_TERMIOS is preferred, if it is
 103  *      supported on your system.
 104  */
 105
 106 #define HAVE_TERMIOS
 107 /* #define HAVE_TERMIO */
 108
 109 #define NO_TERMIO
 110
 111 /*
 112  *      Define HAVE_PTYS if the system supports pty devices.
 113  *      Note: PTYs are broken on darwin <6.  Use at your own risk.
 114  */
 115
 116 #define HAVE_PTYS
 117
 118 /**
 119  * PTYs only work correctly on Darwin 7 or higher.  So make the
 120  * default for process-connection-type dependent on the kernel
 121  * version.
 122  */
 123 #define MIN_PTY_KERNEL_VERSION '7'
 124
 125 /*
 126  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 127  *      The 4.2 opendir, etc., library functions.
 128  */
 129
 130 /* #define NONSYSTEM_DIR_LIBRARY */
 131
 132 /* Define this symbol if your system has the functions bcopy, etc. */
 133
 134 #define BSTRING
 135
 136 /* subprocesses should be defined if you want to
 137    have code for asynchronous subprocesses
 138    (as used in M-x compile and M-x shell).
 139    This is generally OS dependent, and not supported
 140    under most USG systems. */
 141
 142 #define subprocesses
 143
 144 /* If your system uses COFF (Common Object File Format) then define the
 145    preprocessor symbol "COFF". */
 146
 147 /* #define COFF */
 148
 149 /* define MAIL_USE_FLOCK if the mailer uses flock
 150    to interlock access to /usr/spool/mail/$USER.
 151    The alternative is that a lock file named
 152    /usr/spool/mail/$USER.lock.  */
 153
 154 #define MAIL_USE_FLOCK
 155
 156 /* Define CLASH_DETECTION if you want lock files to be written
 157    so that Emacs can tell instantly when you try to modify
 158    a file that someone else has modified in his Emacs.  */
 159
 160 #define CLASH_DETECTION
 161
 162 /* Define this if your operating system declares signal handlers to
 163    have a type other than the usual.  `The usual' is `void' for ANSI C
 164    systems (i.e. when the __STDC__ macro is defined), and `int' for
 165    pre-ANSI systems.  If you're using GCC on an older system, __STDC__
 166    will be defined, but the system's include files will still say that
 167    signal returns int or whatever; in situations like that, define
 168    this to be what the system's include files want.  */
 169 /* #define SIGTYPE int */
 170
 171 /* If the character used to separate elements of the executable path
 172    is not ':', #define this to be the appropriate character constant.  */
 173 /* #define SEPCHAR ':' */
 174
 175 /* Define this if the system can use mmap for buffer text allocation.  */
 176 /* #define USE_MMAP_FOR_BUFFERS 1 */
 177
 178 /* ============================================================ */
 179
 180 /* Here, add any special hacks needed
 181    to make Emacs work on this system.  For example,
 182    you might define certain system call names that don't
 183    exist on your system, or that do different things on
 184    your system and must be used only through an encapsulation
 185    (Which you should place, by convention, in sysdep.c).  */
 186
 187 /* Some compilers tend to put everything declared static
 188    into the initialized data area, which becomes pure after dumping Emacs.
 189    On these systems, you must #define static as nothing to foil this.
 190    Note that emacs carefully avoids static vars inside functions.  */
 191
 192 /* #define static */
 193
 194 /* If the system's imake configuration file defines `NeedWidePrototypes'
 195    as `NO', we must define NARROWPROTO manually.  Such a define is
 196    generated in the Makefile generated by `xmkmf'.  If we don't
 197    define NARROWPROTO, we will see the wrong function prototypes
 198    for X functions taking float or double parameters.  */
 199
 200 /*  #define NARROWPROTO 1 */
 201
 202 /* ============================================================ */
 203
 204 /* After adding support for a new system, modify the large case
 205    statement in the `configure' script to recognize reasonable
 206    configuration names, and add a description of the system to
 207    `etc/MACHINES'.
 208
 209    If you've just fixed a problem in an existing configuration file,
 210    you should also check `etc/MACHINES' to make sure its descriptions
 211    of known problems in that configuration should be updated.  */
 212
 213
 214 /* Avoid the use of the name init_process (process.c) because it is
 215    also the name of a Mach system call.  */
 216 #define init_process emacs_init_process
 217
 218 /* Fix compilation problem for regex.c.  */
 219 #define __restrict
 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 and where to find Mac
 265    specific headers.  */
 266 #define C_SWITCH_SYSTEM -fpascal-strings -fno-common -DMAC_OSX -I../mac/src
 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 -framework 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 /* This prevents a compilation error in xfaces.c: struct kboard * is
 320    used in a function protocol the first time this type appears in the
 321    file, since MULTI_KBOARD is undefined for the Mac OS X build.  */
 322 #ifndef NOT_C_CODE
 323 struct kboard;
 324 #endif
 325
 326 /* The following solves the problem that Emacs hangs when evaluating
 327    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
 328    does not exist.  */
 329 #undef HAVE_WORKING_VFORK
 330 #define vfork fork
 331 #define DONT_REOPEN_PTY
 332
 333 #ifdef temacs
 334 #define malloc unexec_malloc
 335 #define realloc unexec_realloc
 336 #define free unexec_free
 337 #endif
 338
 339 /* This makes create_process in process.c save and restore signal
 340    handlers correctly.  Suggested by Nozomu Ando.*/
 341 #define POSIX_SIGNALS
 342
 343 /* Reroute calls to SELECT to the version defined in mac.c to fix the
 344    problem of Emacs requiring an extra return to be typed to start
 345    working when started from the command line.  */
 346 #if defined (HAVE_CARBON) && (defined (emacs) || defined (temacs))
 347 #define select sys_select
 348 #endif
 349
 350 /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the
 351    stack.  */
 352 #define GC_MARK_STACK   GC_MAKE_GCPROS_NOOPS
 353
 354 /* arch-tag: 481d443d-4f89-43ea-b5fb-49706d95fa41
 355    (do not change this comment) */