mac/inc/s-mac.h

   1 /* Handcrafted s-mac.h file for building GNU Emacs on Mac OS 9.
   2    Copyright (C) 1999, 2000 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 /* Contributed by Andrew Choi (akochoi@mac.com).  */
  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 /* #define BSD4_3 */
  36 /* #define BSD_SYSTEM */
  37 /* #define VMS */
  38
  39 /* SYSTEM_TYPE should indicate the kind of system you are using.
  40  It sets the Lisp variable system-type.  */
  41
  42 #define SYSTEM_TYPE "macos"
  43
  44 /* NOMULTIPLEJOBS should be defined if your system's shell
  45  does not have "job control" (the ability to stop a program,
  46  run some other program, then continue the first one).  */
  47
  48 #define NOMULTIPLEJOBS
  49
  50 /* Emacs can read input using SIGIO and buffering characters itself,
  51    or using CBREAK mode and making C-g cause SIGINT.
  52    The choice is controlled by the variable interrupt_input.
  53
  54    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  55
  56    Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
  57    to indicate whether or not signal-driven I/O is possible.  It uses
  58    INTERRUPT_INPUT to decide whether to use it by default.
  59
  60    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  61    CBREAK mode has two disadvantages
  62      1) At least in 4.2, it is impossible to handle the Meta key properly.
  63         I hear that in system V this problem does not exist.
  64      2) Control-G causes output to be discarded.
  65         I do not know whether this can be fixed in system V.
  66
  67    Another method of doing input is planned but not implemented.
  68    It would have Emacs fork off a separate process
  69    to read the input and send it to the true Emacs process
  70    through a pipe. */
  71
  72 /* #define INTERRUPT_INPUT */
  73
  74 /* Letter to use in finding device name of first pty,
  75   if system supports pty's.  'a' means it is /dev/ptya0  */
  76
  77 /* #define FIRST_PTY_LETTER 'a' */
  78
  79 /*
  80  *      Define HAVE_TERMIOS if the system provides POSIX-style
  81  *      functions and macros for terminal control.
  82  *
  83  *      Define HAVE_TERMIO if the system provides sysV-style ioctls
  84  *      for terminal control.
  85  *
  86  *      Do not define both.  HAVE_TERMIOS is preferred, if it is
  87  *      supported on your system.
  88  */
  89
  90 /* #define HAVE_TERMIOS */
  91 #define HAVE_TERMIO
  92
  93 /*
  94  *      Define HAVE_PTYS if the system supports pty devices.
  95  */
  96
  97 /* #define HAVE_PTYS */
  98
  99 /*
 100  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 101  *      The 4.2 opendir, etc., library functions.
 102  */
 103
 104 /* #define NONSYSTEM_DIR_LIBRARY */
 105
 106 /* Define this symbol if your system has the functions bcopy, etc. */
 107
 108 /* #define BSTRING */
 109
 110 /* subprocesses should be defined if you want to
 111    have code for asynchronous subprocesses
 112    (as used in M-x compile and M-x shell).
 113    This is generally OS dependent, and not supported
 114    under most USG systems. */
 115
 116 /* #define subprocesses */
 117
 118 /* If your system uses COFF (Common Object File Format) then define the
 119    preprocessor symbol "COFF". */
 120
 121 /* #define COFF */
 122
 123 /* define MAIL_USE_FLOCK if the mailer uses flock
 124    to interlock access to /usr/spool/mail/$USER.
 125    The alternative is that a lock file named
 126    /usr/spool/mail/$USER.lock.  */
 127
 128 /* #define MAIL_USE_FLOCK */
 129
 130 /* Define CLASH_DETECTION if you want lock files to be written
 131    so that Emacs can tell instantly when you try to modify
 132    a file that someone else has modified in his Emacs.  */
 133
 134 /* #define CLASH_DETECTION */
 135
 136 /* Define this if your operating system declares signal handlers to
 137    have a type other than the usual.  `The usual' is `void' for ANSI C
 138    systems (i.e. when the __STDC__ macro is defined), and `int' for
 139    pre-ANSI systems.  If you're using GCC on an older system, __STDC__
 140    will be defined, but the system's include files will still say that
 141    signal returns int or whatever; in situations like that, define
 142    this to be what the system's include files want.  */
 143 /* #define SIGTYPE int */
 144
 145 /* If the character used to separate elements of the executable path
 146    is not ':', #define this to be the appropriate character constant.  */
 147 /* #define SEPCHAR ':' */
 148
 149 /* Define this if the system can use mmap for buffer text allocation.  */
 150 /* #define USE_MMAP_FOR_BUFFERS 1 */
 151
 152 /* ============================================================ */
 153
 154 /* Here, add any special hacks needed
 155    to make Emacs work on this system.  For example,
 156    you might define certain system call names that don't
 157    exist on your system, or that do different things on
 158    your system and must be used only through an encapsulation
 159    (Which you should place, by convention, in sysdep.c).  */
 160
 161 /* Some compilers tend to put everything declared static
 162    into the initialized data area, which becomes pure after dumping Emacs.
 163    On these systems, you must #define static as nothing to foil this.
 164    Note that emacs carefully avoids static vars inside functions.  */
 165
 166 /* #define static */
 167
 168 /* If the system's imake configuration file defines `NeedWidePrototypes'
 169    as `NO', we must define NARROWPROTO manually.  Such a define is
 170    generated in the Makefile generated by `xmkmf'.  If we don't
 171    define NARROWPROTO, we will see the wrong function prototypes
 172    for X functions taking float or double parameters.  */
 173
 174 /*  #define NARROWPROTO 1 */
 175
 176 /* ============================================================ */
 177
 178 /* After adding support for a new system, modify the large case
 179    statement in the `configure' script to recognize reasonable
 180    configuration names, and add a description of the system to
 181    `etc/MACHINES'.
 182
 183    If you've just fixed a problem in an existing configuration file,
 184    you should also check `etc/MACHINES' to make sure its descriptions
 185    of known problems in that configuration should be updated.  */
 186
 187 #ifdef __MRC__
 188 /* MrC predefines signal numbers as powers of 2.  */
 189 #define sigmask(no) (((no) & (no) - 1) ? 1L << ((no) - 1) : (no))
 190 #define __signal_max 8        /* There's enough room for the following
 191                                  signals between 8 and 16, and the
 192                                  maximum predefined one (32) is less
 193                                  than 8th power of 2.  */
 194 #endif
 195
 196 #define SIGHUP (__signal_max+1)
 197 #define SIGQUIT (__signal_max+2)
 198 #define SIGTRAP (__signal_max+3)
 199 #define SIGKILL (__signal_max+4)
 200 #define SIGALRM (__signal_max+5)
 201 #define SIGPIPE (__signal_max+6)
 202
 203 #ifdef __MRC__
 204 #define NSIG SIGTERM  /* largest one in signal.h */
 205 #else
 206 #define NSIG (__signal_max+6)
 207 #endif
 208
 209 #ifdef __MRC__
 210 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_ptr - (FILE)->_base)
 211 #elif __MWERKS__
 212 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->buffer_ptr - (FILE)->buffer)
 213 #endif
 214
 215 #ifdef __MWERKS__
 216 #include <errno.h>
 217 #ifndef ENOENT
 218 #define ENOENT 100
 219 #endif
 220 #ifndef EXDEV
 221 #define EXDEV 101
 222 #endif
 223 #ifndef EEXIST
 224 #define EEXIST 102
 225 #endif
 226 #ifndef EINTR
 227 #define EINTR 102
 228 #endif
 229 #ifndef EACCES
 230 #define EACCES 103
 231 #endif
 232 #ifndef ENOTDIR
 233 #define ENOTDIR 104
 234 #endif
 235 #ifndef EIO
 236 #define EIO 105
 237 #endif
 238 #ifndef EBADF
 239 #define EBADF 106
 240 #endif
 241 #endif
 242
 243 #define SYSTEM_PURESIZE_EXTRA (200*1024)
 244
 245 /* don't know what this will do, but sysdep.c needs it */
 246 #define DATA_START 0
 247
 248 /* Limited by CW's 32K limit on local data! */
 249 #define READ_BUF_SIZE (8 << 10)
 250
 251 #include <utsname.h>
 252
 253 #define SYSV_SYSTEM_DIR
 254
 255 #define SYSTEM_MALLOC
 256
 257 #define _setjmp setjmp
 258 #define _longjmp longjmp
 259
 260 #define _exit exit
 261
 262 #define main emacs_main
 263
 264 /* Include this here so it won't be include again when #include in emacs
 265    sources.  Then undefine the macro definitions in it for unlink, read,
 266    write, access, and rmdir.  */
 267 #ifdef __MWERKS__
 268 #include <unistd.h>
 269 #endif
 270
 271 #ifndef X_OK
 272 #define X_OK 01
 273 #endif
 274
 275 #undef unlink
 276 #define unlink sys_unlink
 277 #undef read
 278 #define read sys_read
 279 #undef write
 280 #define write sys_write
 281 #undef access
 282 #define access sys_access
 283 #undef rmdir
 284 #define rmdir sys_rmdir
 285
 286 #define open sys_open
 287 #define creat sys_creat
 288
 289 #define rename sys_rename
 290 #define fopen sys_fopen
 291 #define signal sys_signal
 292
 293 #define gmtime sys_gmtime
 294 #define localtime sys_localtime
 295 #define ctime sys_ctime
 296 #define time sys_time
 297
 298 #define index strchr
 299 #define rindex strrchr
 300
 301 #define PTR POINTER_TYPE *      /* For strftime.c.  */
 302
 303 #define SYMS_SYSTEM syms_of_mac()
 304
 305 #ifdef USE_LSB_TAG
 306 #ifdef __MRC__
 307 #define DECL_ALIGN(type, var) type var
 308 #endif
 309 #endif
 310
 311 /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the
 312    stack.  */
 313 #define GC_MARK_STACK   GC_MAKE_GCPROS_NOOPS
 314
 315 /* arch-tag: 6a941c4b-a419-4d25-80ac-9335053e58b2
 316    (do not change this comment) */