src/s/darwin.h

   1 /* System description header file for Darwin (Mac OS X).
   2    Copyright (C) 2001, 2002 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 /* MAC_OS is used to conditionally compile code common to both MAC_OS8
  41    and MAC_OSX.  */
  42 #ifdef MAC_OSX
  43 #ifdef HAVE_CARBON
  44 #define MAC_OS
  45 #endif
  46 #endif
  47
  48 /* SYSTEM_TYPE should indicate the kind of system you are using.
  49  It sets the Lisp variable system-type.  */
  50
  51 #define SYSTEM_TYPE "darwin"
  52
  53 /* NOMULTIPLEJOBS should be defined if your system's shell
  54  does not have "job control" (the ability to stop a program,
  55  run some other program, then continue the first one).  */
  56
  57 /* #define NOMULTIPLEJOBS */
  58
  59 /* Emacs can read input using SIGIO and buffering characters itself,
  60    or using CBREAK mode and making C-g cause SIGINT.
  61    The choice is controlled by the variable interrupt_input.
  62
  63    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  64
  65    Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
  66    to indicate whether or not signal-driven I/O is possible.  It uses
  67    INTERRUPT_INPUT to decide whether to use it by default.
  68
  69    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  70    CBREAK mode has two disadvantages
  71      1) At least in 4.2, it is impossible to handle the Meta key properly.
  72         I hear that in system V this problem does not exist.
  73      2) Control-G causes output to be discarded.
  74         I do not know whether this can be fixed in system V.
  75
  76    Another method of doing input is planned but not implemented.
  77    It would have Emacs fork off a separate process
  78    to read the input and send it to the true Emacs process
  79    through a pipe. */
  80
  81 #define INTERRUPT_INPUT
  82
  83 /* Letter to use in finding device name of first pty,
  84   if system supports pty's.  'a' means it is /dev/ptya0  */
  85
  86 #define FIRST_PTY_LETTER 'p'
  87
  88 /*
  89  *      Define HAVE_TERMIOS if the system provides POSIX-style
  90  *      functions and macros for terminal control.
  91  *
  92  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  93  *      for terminal control.
  94  *
  95  *      Do not define both.  HAVE_TERMIOS is preferred, if it is
  96  *      supported on your system.
  97  */
  98
  99 #define HAVE_TERMIOS
 100 /* #define HAVE_TERMIO */
 101
 102 #define NO_TERMIO
 103
 104 /*
 105  *      Define HAVE_PTYS if the system supports pty devices.
 106  */
 107
 108 #define HAVE_PTYS
 109
 110 /*
 111  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 112  *      The 4.2 opendir, etc., library functions.
 113  */
 114
 115 /* #define NONSYSTEM_DIR_LIBRARY */
 116
 117 /* Define this symbol if your system has the functions bcopy, etc. */
 118
 119 #define BSTRING
 120
 121 /* subprocesses should be defined if you want to
 122    have code for asynchronous subprocesses
 123    (as used in M-x compile and M-x shell).
 124    This is generally OS dependent, and not supported
 125    under most USG systems. */
 126
 127 #define subprocesses
 128
 129 /* If your system uses COFF (Common Object File Format) then define the
 130    preprocessor symbol "COFF". */
 131
 132 /* #define COFF */
 133
 134 /* define MAIL_USE_FLOCK if the mailer uses flock
 135    to interlock access to /usr/spool/mail/$USER.
 136    The alternative is that a lock file named
 137    /usr/spool/mail/$USER.lock.  */
 138
 139 #define MAIL_USE_FLOCK
 140
 141 /* Define CLASH_DETECTION if you want lock files to be written
 142    so that Emacs can tell instantly when you try to modify
 143    a file that someone else has modified in his Emacs.  */
 144
 145 #define CLASH_DETECTION
 146
 147 /* Define this if your operating system declares signal handlers to
 148    have a type other than the usual.  `The usual' is `void' for ANSI C
 149    systems (i.e. when the __STDC__ macro is defined), and `int' for
 150    pre-ANSI systems.  If you're using GCC on an older system, __STDC__
 151    will be defined, but the system's include files will still say that
 152    signal returns int or whatever; in situations like that, define
 153    this to be what the system's include files want.  */
 154 /* #define SIGTYPE int */
 155
 156 /* If the character used to separate elements of the executable path
 157    is not ':', #define this to be the appropriate character constant.  */
 158 /* #define SEPCHAR ':' */
 159
 160 /* Define this if the system can use mmap for buffer text allocation.  */
 161 /* #define USE_MMAP_FOR_BUFFERS 1 */
 162
 163 /* ============================================================ */
 164
 165 /* Here, add any special hacks needed
 166    to make Emacs work on this system.  For example,
 167    you might define certain system call names that don't
 168    exist on your system, or that do different things on
 169    your system and must be used only through an encapsulation
 170    (Which you should place, by convention, in sysdep.c).  */
 171
 172 /* Some compilers tend to put everything declared static
 173    into the initialized data area, which becomes pure after dumping Emacs.
 174    On these systems, you must #define static as nothing to foil this.
 175    Note that emacs carefully avoids static vars inside functions.  */
 176
 177 /* #define static */
 178
 179 /* If the system's imake configuration file defines `NeedWidePrototypes'
 180    as `NO', we must define NARROWPROTO manually.  Such a define is
 181    generated in the Makefile generated by `xmkmf'.  If we don't
 182    define NARROWPROTO, we will see the wrong function prototypes
 183    for X functions taking float or double parameters.  */
 184
 185 /*  #define NARROWPROTO 1 */
 186
 187 /* ============================================================ */
 188
 189 /* After adding support for a new system, modify the large case
 190    statement in the `configure' script to recognize reasonable
 191    configuration names, and add a description of the system to
 192    `etc/MACHINES'.
 193
 194    If you've just fixed a problem in an existing configuration file,
 195    you should also check `etc/MACHINES' to make sure its descriptions
 196    of known problems in that configuration should be updated.  */
 197
 198
 199 /* Avoid the use of the name init_process (process.c) because it is
 200    also the name of a Mach system call.  */
 201 #define init_process emacs_init_process
 202
 203 /* Fix compilation problem for regex.c.  */
 204 #define __restrict
 205
 206 /* Fix compilation problem for md5.c.  */
 207 #define __attribute__(x)
 208
 209 /* Used in dispnew.c.  Copied from freebsd.h. */
 210 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
 211
 212 /* System uses OXTABS instead of the expected TAB3.  (Copied from
 213    bsd386.h.)  */
 214 #define TAB3 OXTABS
 215
 216 /* Darwin ld insists on the use of malloc routines in the System
 217    framework.  */
 218 #define SYSTEM_MALLOC
 219
 220 /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */
 221 #define HAVE_SOCKETS
 222
 223 /* Extra initialization calls in main for Mac OS X system type.  */
 224 #ifdef HAVE_CARBON
 225 #define SYMS_SYSTEM syms_of_mac()
 226 #endif
 227
 228 /* Definitions for how to dump.  Copied from nextstep.h.  */
 229
 230 #define UNEXEC unexmacosx.o
 231
 232 #define START_FILES pre-crt0.o
 233
 234 /* start_of_text isn't actually used, so make it compile without error.  */
 235 #define TEXT_START (0)
 236
 237 /* This seems to be right for end_of_text, but it may not be used anyway.  */
 238 #define TEXT_END get_etext()
 239
 240 /* This seems to be right for end_of_data, but it may not be used anyway.  */
 241 #define DATA_END get_edata()
 242
 243 /* Definitions for how to compile & link.  */
 244
 245 /* Indicate that we are compiling for Mac OS X and where to find Mac
 246    specific headers.  */
 247 #define C_SWITCH_SYSTEM -fpascal-strings -fno-common -DMAC_OSX -I../mac/src
 248
 249 /* Link in the Carbon lib.  The -headerpad option tells ld (see man
 250    page) to leave room at the end of the header for adding load
 251    commands.  Needed for dumping.  0x690 is the total size of 30
 252    segment load commands (at 56 each).  */
 253 #define LD_SWITCH_SYSTEM_TEMACS -prebind -framework Carbon -lstdc++ -Xlinker -headerpad -Xlinker 690
 254
 255 #define C_SWITCH_SYSTEM_TEMACS -Dtemacs
 256
 257 /* The ncurses library has been moved out of the System framework in
 258    Mac OS X 10.2.  So if ./configure detects it, set the command-line
 259    option to use it.  */
 260 #ifdef HAVE_LIBNCURSES
 261 #define LIBS_TERMCAP -lncurses
 262 /* This prevents crashes when running Emacs in Terminal.app under
 263    10.2.  */
 264 #define TERMINFO
 265 #endif
 266
 267 /* Link this program just by running cc.  */
 268 #define ORDINARY_LINK
 269
 270 /* We don't have a g library, so override the -lg LIBS_DEBUG switch.  */
 271 #define LIBS_DEBUG
 272
 273 /* Adding -lm confuses the dynamic linker, so omit it.  */
 274 #define LIB_MATH
 275
 276 /* Tell src/Makefile.in to create files in the Mac OS X application
 277    bundle mac/Emacs.app.  */
 278 #ifdef HAVE_CARBON
 279 #define OTHER_FILES macosx-app
 280 #endif
 281
 282
 283 /* Define the following so emacs symbols will not conflict with those
 284    in the System framework.  Otherwise -prebind will not work.  */
 285
 286 /* Do not define abort in emacs.c.  */
 287 #define NO_ABORT
 288
 289 /* Do not define matherr in floatfns.c.  */
 290 #define NO_MATHERR
 291
 292
 293 /* This prevents a compilation error in xfaces.c: struct kboard * is
 294    used in a function protocol the first time this type appears in the
 295    file, since MULTI_KBOARD is undefined for the Mac OS X build.  */
 296 #ifndef NOT_C_CODE
 297 struct kboard;
 298 #endif
 299
 300 /* The following solves the problem that Emacs hangs when evaluating
 301    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
 302    does not exist.  */
 303 #undef HAVE_WORKING_VFORK
 304 #define vfork fork
 305 #define DONT_REOPEN_PTY
 306
 307 #ifdef temacs
 308 #define malloc unexec_malloc
 309 #define realloc unexec_realloc
 310 #define free unexec_free
 311 #endif
 312
 313 /* Reroute calls to SELECT to the version defined in mac.c to fix the
 314    problem of Emacs requiring an extra return to be typed to start
 315    working when started from the command line.  */
 316 #if defined (HAVE_CARBON) && (defined (emacs) || defined (temacs))
 317 #define select sys_select
 318 #endif