bsd/sys/cdefs.h

   1 /*
   2  * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright 1995 NeXT Computer, Inc. All rights reserved. */
  29 /*
  30  * Copyright (c) 1991, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Berkeley Software Design, Inc.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)cdefs.h     8.8 (Berkeley) 1/9/95
  65  */
  66
  67 #ifndef _CDEFS_H_
  68 #define _CDEFS_H_
  69
  70 #if defined(__cplusplus)
  71 #define __BEGIN_DECLS   extern "C" {
  72 #define __END_DECLS     }
  73 #else
  74 #define __BEGIN_DECLS
  75 #define __END_DECLS
  76 #endif
  77
  78 /*
  79  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
  80  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
  81  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
  82  * in between its arguments.  __CONCAT can also concatenate double-quoted
  83  * strings produced by the __STRING macro, but this only works with ANSI C.
  84  */
  85 #if defined(__STDC__) || defined(__cplusplus)
  86 #define __P(protos)     protos          /* full-blown ANSI C */
  87 #define __CONCAT(x,y)   x ## y
  88 #define __STRING(x)     #x
  89
  90 #define __const         const           /* define reserved names to standard */
  91 #define __signed        signed
  92 #define __volatile      volatile
  93 #if defined(__cplusplus)
  94 #define __inline        inline          /* convert to C++ keyword */
  95 #else
  96 #ifndef __GNUC__
  97 #define __inline                        /* delete GCC keyword */
  98 #endif /* !__GNUC__ */
  99 #endif /* !__cplusplus */
 100
 101 #else   /* !(__STDC__ || __cplusplus) */
 102 #define __P(protos)     ()              /* traditional C preprocessor */
 103 #define __CONCAT(x,y)   x/**/y
 104 #define __STRING(x)     "x"
 105
 106 #ifndef __GNUC__
 107 #define __const                         /* delete pseudo-ANSI C keywords */
 108 #define __inline
 109 #define __signed
 110 #define __volatile
 111 #endif  /* !__GNUC__ */
 112
 113 /*
 114  * In non-ANSI C environments, new programs will want ANSI-only C keywords
 115  * deleted from the program and old programs will want them left alone.
 116  * When using a compiler other than gcc, programs using the ANSI C keywords
 117  * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
 118  * When using "gcc -traditional", we assume that this is the intent; if
 119  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
 120  */
 121 #ifndef NO_ANSI_KEYWORDS
 122 #define const           __const                 /* convert ANSI C keywords */
 123 #define inline          __inline
 124 #define signed          __signed
 125 #define volatile        __volatile
 126 #endif /* !NO_ANSI_KEYWORDS */
 127 #endif /* !(__STDC__ || __cplusplus) */
 128
 129 /*
 130  * GCC1 and some versions of GCC2 declare dead (non-returning) and
 131  * pure (no side effects) functions using "volatile" and "const";
 132  * unfortunately, these then cause warnings under "-ansi -pedantic".
 133  * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of
 134  * these work for GNU C++ (modulo a slight glitch in the C++ grammar
 135  * in the distribution version of 2.5.5).
 136  */
 137 #if defined(__MWERKS__) && (__MWERKS__ > 0x2400)
 138         /* newer Metrowerks compilers support __attribute__() */
 139 #elif __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 5
 140 #define __dead2         __attribute__((__noreturn__))
 141 #define __pure2         __attribute__((__const__))
 142 #if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7
 143 #define __unused        /* no attribute */
 144 #else
 145 #define __unused        __attribute__((__unused__))
 146 #endif
 147 #else
 148 #define __attribute__(x)        /* delete __attribute__ if non-gcc or gcc1 */
 149 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
 150 /* __dead and __pure are depreciated.  Use __dead2 and __pure2 instead */
 151 #define __dead          __volatile
 152 #define __pure          __const
 153 #endif
 154 #endif
 155
 156 /* Delete pseudo-keywords wherever they are not available or needed. */
 157 #ifndef __dead
 158 #define __dead
 159 #define __pure
 160 #endif
 161 #ifndef __dead2
 162 #define __dead2
 163 #define __pure2
 164 #define __unused
 165 #endif
 166
 167 /*
 168  * GCC 2.95 provides `__restrict' as an extension to C90 to support the
 169  * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
 170  * a way to define the `restrict' type qualifier without disturbing older
 171  * software that is unaware of C99 keywords.
 172  */
 173 #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
 174 #if __STDC_VERSION__ < 199901
 175 #define __restrict
 176 #else
 177 #define __restrict      restrict
 178 #endif
 179 #endif
 180
 181 /*
 182  * Compiler-dependent macros to declare that functions take printf-like
 183  * or scanf-like arguments.  They are null except for versions of gcc
 184  * that are known to support the features properly.  Functions declared
 185  * with these attributes will cause compilation warnings if there is a
 186  * mismatch between the format string and subsequent function parameter
 187  * types.
 188  */
 189 #if __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 7
 190 #define __printflike(fmtarg, firstvararg) \
 191                 __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
 192 #define __scanflike(fmtarg, firstvararg) \
 193                 __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
 194 #else
 195 #define __printflike(fmtarg, firstvararg)
 196 #define __scanflike(fmtarg, firstvararg)
 197 #endif
 198
 199 #define __IDSTRING(name,string) static const char name[] __unused = string
 200
 201 #ifndef __COPYRIGHT
 202 #define __COPYRIGHT(s) __IDSTRING(copyright,s)
 203 #endif
 204
 205 #ifndef __RCSID
 206 #define __RCSID(s) __IDSTRING(rcsid,s)
 207 #endif
 208
 209 #ifndef __SCCSID
 210 #define __SCCSID(s) __IDSTRING(sccsid,s)
 211 #endif
 212
 213 #ifndef __PROJECT_VERSION
 214 #define __PROJECT_VERSION(s) __IDSTRING(project_version,s)
 215 #endif
 216
 217 /*
 218  * COMPILATION ENVIRONMENTS
 219  *
 220  * DEFAULT      By default newly complied code will get POSIX APIs plus
 221  *              Apple API extensions in scope.
 222  *
 223  *              Most users will use this compilation environment to avoid
 224  *              behavioral differences between 32 and 64 bit code.
 225  *
 226  * LEGACY       Defining _NONSTD_SOURCE will get pre-POSIX APIs plus Apple
 227  *              API extensions in scope.
 228  *
 229  *              This is generally equivalent to the Tiger release compilation
 230  *              environment, except that it cannot be applied to 64 bit code;
 231  *              its use is discouraged.
 232  *
 233  *              We expect this environment to be deprecated in the future.
 234  *
 235  * STRICT       Defining _POSIX_C_SOURCE or _XOPEN_SOURCE restricts the
 236  *              available APIs to exactly the set of APIs defined by the
 237  *              corresponding standard, based on the value defined.
 238  *
 239  *              A correct, portable definition for _POSIX_C_SOURCE is 200112L.
 240  *              A correct, portable definition for _XOPEN_SOURCE is 600L.
 241  *
 242  *              Apple API extensions are not visible in this environment,
 243  *              which can cause Apple specific code to fail to compile,
 244  *              or behave incorrectly if prototypes are not in scope or
 245  *              warnings about missing prototypes are not enabled or ignored.
 246  *
 247  * In any compilation environment, for correct symbol resolution to occur,
 248  * function prototypes must be in scope.  It is recommended that all Apple
 249  * tools users add either the "-Wall" or "-Wimplicit-function-declaration"
 250  * compiler flags to their projects to be warned when a function is being
 251  * used without a prototype in scope.
 252  */
 253
 254 /* These settings are particular to each product. */
 255 #ifdef KERNEL
 256 #define __DARWIN_ONLY_64_BIT_INO_T      0
 257 #define __DARWIN_ONLY_UNIX_CONFORMANCE  0
 258 #define __DARWIN_ONLY_VERS_1050         0
 259 #define __DARWIN_SUF_DARWIN10   "_darwin10"
 260 #define __DARWIN10_ALIAS(sym)   __asm("_" __STRING(sym) __DARWIN_SUF_DARWIN10)
 261 #else /* !KERNEL */
 262 #ifdef PRODUCT_AppleTV
 263 /* Product: AppleTV */
 264 #define __DARWIN_ONLY_64_BIT_INO_T      1
 265 #define __DARWIN_ONLY_UNIX_CONFORMANCE  1
 266 #define __DARWIN_ONLY_VERS_1050         1
 267 #endif /* PRODUCT_AppleTV */
 268 #ifdef PRODUCT_iPhone
 269 /* Product: iPhone */
 270 #define __DARWIN_ONLY_64_BIT_INO_T      1
 271 #define __DARWIN_ONLY_UNIX_CONFORMANCE  1
 272 #define __DARWIN_ONLY_VERS_1050         1
 273 #endif /* PRODUCT_iPhone */
 274 #ifdef PRODUCT_MacOSX
 275 /* Product: MacOSX */
 276 #define __DARWIN_ONLY_64_BIT_INO_T      0
 277 /* #undef __DARWIN_ONLY_UNIX_CONFORMANCE (automatically set for 64-bit) */
 278 #define __DARWIN_ONLY_VERS_1050         0
 279 #endif /* PRODUCT_MacOSX */
 280 #endif /* KERNEL */
 281
 282 /*
 283  * The __DARWIN_ALIAS macros are used to do symbol renaming; they allow
 284  * legacy code to use the old symbol, thus maintaining binary compatibility
 285  * while new code can use a standards compliant version of the same function.
 286  *
 287  * __DARWIN_ALIAS is used by itself if the function signature has not
 288  * changed, it is used along with a #ifdef check for __DARWIN_UNIX03
 289  * if the signature has changed.  Because the __LP64__ environment
 290  * only supports UNIX03 semantics it causes __DARWIN_UNIX03 to be
 291  * defined, but causes __DARWIN_ALIAS to do no symbol mangling.
 292  *
 293  * As a special case, when XCode is used to target a specific version of the
 294  * OS, the manifest constant __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
 295  * will be defined by the compiler, with the digits representing major version
 296  * time 100 + minor version times 10 (e.g. 10.5 := 1050).  If we are targeting
 297  * pre-10.5, and it is the default compilation environment, revert the
 298  * compilation environment to pre-__DARWIN_UNIX03.
 299  */
 300 #if !defined(__DARWIN_ONLY_UNIX_CONFORMANCE)
 301 #  if defined(__LP64__)
 302 #    define __DARWIN_ONLY_UNIX_CONFORMANCE 1
 303 #  else /* !__LP64__ */
 304 #    define __DARWIN_ONLY_UNIX_CONFORMANCE 0
 305 #  endif /* __LP64__ */
 306 #endif /* !__DARWIN_ONLY_UNIX_CONFORMANCE */
 307
 308 #if !defined(__DARWIN_UNIX03)
 309 #  if defined(KERNEL)
 310 #    define __DARWIN_UNIX03     0
 311 #  elif __DARWIN_ONLY_UNIX_CONFORMANCE
 312 #    if defined(_NONSTD_SOURCE)
 313 #      error "Can't define _NONSTD_SOURCE when only UNIX conformance is available."
 314 #    endif /* _NONSTD_SOURCE */
 315 #    define __DARWIN_UNIX03     1
 316 #  elif defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE)
 317 #    if defined(_NONSTD_SOURCE)
 318 #      error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE or _POSIX_C_SOURCE."
 319 #    endif /* _NONSTD_SOURCE */
 320 #    define __DARWIN_UNIX03     1
 321 #  elif defined(_NONSTD_SOURCE)
 322 #    define __DARWIN_UNIX03     0
 323 #  else /* default */
 324 #    if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050)
 325 #      define __DARWIN_UNIX03   0
 326 #    else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 327 #      define __DARWIN_UNIX03   1
 328 #    endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 329 #  endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
 330 #endif /* !__DARWIN_UNIX03 */
 331
 332 #if !defined(__DARWIN_64_BIT_INO_T)
 333 #  if defined(KERNEL)
 334 #    define __DARWIN_64_BIT_INO_T 0
 335 #  elif defined(_DARWIN_USE_64_BIT_INODE)
 336 #    if defined(_DARWIN_NO_64_BIT_INODE)
 337 #      error "Can't define both _DARWIN_USE_64_BIT_INODE and _DARWIN_NO_64_BIT_INODE."
 338 #    endif /* _DARWIN_NO_64_BIT_INODE */
 339 #    define __DARWIN_64_BIT_INO_T 1
 340 #  elif defined(_DARWIN_NO_64_BIT_INODE)
 341 #    if __DARWIN_ONLY_64_BIT_INO_T
 342 #      error "Can't define _DARWIN_NO_64_BIT_INODE when only 64-bit inodes are available."
 343 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 344 #    define __DARWIN_64_BIT_INO_T 0
 345 #  else /* default */
 346 #    if __DARWIN_ONLY_64_BIT_INO_T
 347 #      define __DARWIN_64_BIT_INO_T 1
 348 #    elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1060) || __DARWIN_UNIX03 == 0
 349 #      define __DARWIN_64_BIT_INO_T 0
 350 #    else /* default */
 351 #      define __DARWIN_64_BIT_INO_T 1
 352 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 353 #  endif
 354 #endif /* !__DARWIN_64_BIT_INO_T */
 355
 356 #if !defined(__DARWIN_VERS_1050)
 357 #  if defined(KERNEL)
 358 #    define __DARWIN_VERS_1050 0
 359 #  elif __DARWIN_ONLY_VERS_1050
 360 #    define __DARWIN_VERS_1050 1
 361 #  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050) || __DARWIN_UNIX03 == 0
 362 #    define __DARWIN_VERS_1050 0
 363 #  else /* default */
 364 #    define __DARWIN_VERS_1050 1
 365 #  endif
 366 #endif /* !__DARWIN_VERS_1050 */
 367
 368 #if !defined(__DARWIN_NON_CANCELABLE)
 369 #  if defined(KERNEL)
 370 #    define __DARWIN_NON_CANCELABLE 0
 371 #  else /* default */
 372 #    define __DARWIN_NON_CANCELABLE 0
 373 #  endif
 374 #endif /* !__DARWIN_NON_CANCELABLE */
 375
 376 /*
 377  * symbol suffixes used for symbol versioning
 378  */
 379 #if __DARWIN_UNIX03
 380 #  if __DARWIN_ONLY_UNIX_CONFORMANCE
 381 #    define __DARWIN_SUF_UNIX03         /* nothing */
 382 #  else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */
 383 #    define __DARWIN_SUF_UNIX03         "$UNIX2003"
 384 #  endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */
 385
 386 #  if __DARWIN_64_BIT_INO_T
 387 #    if __DARWIN_ONLY_64_BIT_INO_T
 388 #      define __DARWIN_SUF_64_BIT_INO_T /* nothing */
 389 #    else /* !__DARWIN_ONLY_64_BIT_INO_T */
 390 #      define __DARWIN_SUF_64_BIT_INO_T "$INODE64"
 391 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 392 #  else /* !__DARWIN_64_BIT_INO_T */
 393 #    define __DARWIN_SUF_64_BIT_INO_T   /* nothing */
 394 #  endif /* __DARWIN_64_BIT_INO_T */
 395
 396 #  if __DARWIN_VERS_1050
 397 #    if __DARWIN_ONLY_VERS_1050
 398 #      define __DARWIN_SUF_1050         /* nothing */
 399 #    else /* !__DARWIN_ONLY_VERS_1050 */
 400 #      define __DARWIN_SUF_1050         "$1050"
 401 #    endif /* __DARWIN_ONLY_VERS_1050 */
 402 #  else /* !__DARWIN_VERS_1050 */
 403 #    define __DARWIN_SUF_1050           /* nothing */
 404 #  endif /* __DARWIN_VERS_1050 */
 405
 406 #  if __DARWIN_NON_CANCELABLE
 407 #    define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL"
 408 #  else /* !__DARWIN_NON_CANCELABLE */
 409 #    define __DARWIN_SUF_NON_CANCELABLE /* nothing */
 410 #  endif /* __DARWIN_NON_CANCELABLE */
 411
 412 #else /* !__DARWIN_UNIX03 */
 413 #  define __DARWIN_SUF_UNIX03           /* nothing */
 414 #  define __DARWIN_SUF_64_BIT_INO_T     /* nothing */
 415 #  define __DARWIN_SUF_NON_CANCELABLE   /* nothing */
 416 #  define __DARWIN_SUF_1050             /* nothing */
 417 #endif /* __DARWIN_UNIX03 */
 418
 419 #define __DARWIN_SUF_EXTSN              "$DARWIN_EXTSN"
 420
 421 /*
 422  * symbol versioning macros
 423  */
 424 #define __DARWIN_ALIAS(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03)
 425 #define __DARWIN_ALIAS_C(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
 426 #define __DARWIN_ALIAS_I(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
 427 #define __DARWIN_INODE64(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T)
 428
 429 #define __DARWIN_1050(sym)              __asm("_" __STRING(sym) __DARWIN_SUF_1050)
 430 #define __DARWIN_1050ALIAS(sym)         __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03)
 431 #define __DARWIN_1050ALIAS_C(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
 432 #define __DARWIN_1050ALIAS_I(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
 433 #define __DARWIN_1050INODE64(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T)
 434
 435 #define __DARWIN_EXTSN(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN)
 436 #define __DARWIN_EXTSN_C(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE)
 437
 438 /*
 439  * symbol release macros
 440  */
 441 #if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1060)
 442 #undef __DARWIN_10_6_AND_LATER
 443 #define __DARWIN_10_6_AND_LATER_ALIAS(x)        /* nothing */
 444 #else /* 10.6 and beyond */
 445 #define __DARWIN_10_6_AND_LATER
 446 #define __DARWIN_10_6_AND_LATER_ALIAS(x)        x
 447 #endif
 448
 449
 450 /*
 451  * POSIX.1 requires that the macros we test be defined before any standard
 452  * header file is included.  This permits us to convert values for feature
 453  * testing, as necessary, using only _POSIX_C_SOURCE.
 454  *
 455  * Here's a quick run-down of the versions:
 456  *  defined(_POSIX_SOURCE)              1003.1-1988
 457  *  _POSIX_C_SOURCE == 1L               1003.1-1990
 458  *  _POSIX_C_SOURCE == 2L               1003.2-1992 C Language Binding Option
 459  *  _POSIX_C_SOURCE == 199309L          1003.1b-1993
 460  *  _POSIX_C_SOURCE == 199506L          1003.1c-1995, 1003.1i-1995,
 461  *                                      and the omnibus ISO/IEC 9945-1: 1996
 462  *  _POSIX_C_SOURCE == 200112L          1003.1-2001
 463  *
 464  * In addition, the X/Open Portability Guide, which is now the Single UNIX
 465  * Specification, defines a feature-test macro which indicates the version of
 466  * that specification, and which subsumes _POSIX_C_SOURCE.
 467  */
 468
 469 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
 470 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
 471 #undef _POSIX_C_SOURCE
 472 #define _POSIX_C_SOURCE         199009L
 473 #endif
 474
 475 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
 476 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
 477 #undef _POSIX_C_SOURCE
 478 #define _POSIX_C_SOURCE         199209L
 479 #endif
 480
 481 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
 482 #ifdef _XOPEN_SOURCE
 483 #if _XOPEN_SOURCE - 0L >= 600L
 484 #undef _POSIX_C_SOURCE
 485 #define _POSIX_C_SOURCE         200112L
 486 #elif _XOPEN_SOURCE - 0L >= 500L
 487 #undef _POSIX_C_SOURCE
 488 #define _POSIX_C_SOURCE         199506L
 489 #endif
 490 #endif
 491
 492 /*
 493  * Deal with all versions of POSIX.  The ordering relative to the tests above is
 494  * important.
 495  */
 496 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
 497 #define _POSIX_C_SOURCE         198808L
 498 #endif
 499
 500 /*
 501  * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and
 502  * c99 still want long longs.  While not perfect, we allow long longs for
 503  * g++.
 504  */
 505 #define __DARWIN_NO_LONG_LONG   (defined(__STRICT_ANSI__) \
 506                                 && (__STDC_VERSION__-0 < 199901L) \
 507                                 && !defined(__GNUG__))
 508
 509 /*
 510  * Long double compatibility macro allow selecting variant symbols based
 511  * on the old (compatible) 64-bit long doubles, or the new 128-bit
 512  * long doubles.  This applies only to ppc; i386 already has long double
 513  * support, while ppc64 doesn't have any backwards history.
 514  */
 515 #if   defined(__ppc__)
 516 #  if defined(__LDBL_MANT_DIG__) && defined(__DBL_MANT_DIG__) && \
 517         __LDBL_MANT_DIG__ > __DBL_MANT_DIG__
 518 #    if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 < 1040
 519 #      define   __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBLStub")
 520 #    else
 521 #      define   __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBL128")
 522 #    endif
 523 #    define     __DARWIN_LDBL_COMPAT2(x) __asm("_" __STRING(x) "$LDBL128")
 524 #    define     __DARWIN_LONG_DOUBLE_IS_DOUBLE  0
 525 #  else
 526 #   define      __DARWIN_LDBL_COMPAT(x) /* nothing */
 527 #   define      __DARWIN_LDBL_COMPAT2(x) /* nothing */
 528 #   define      __DARWIN_LONG_DOUBLE_IS_DOUBLE  1
 529 #  endif
 530 #elif defined(__i386__) || defined(__ppc64__) || defined(__x86_64__)
 531 #  define       __DARWIN_LDBL_COMPAT(x) /* nothing */
 532 #  define       __DARWIN_LDBL_COMPAT2(x) /* nothing */
 533 #  define       __DARWIN_LONG_DOUBLE_IS_DOUBLE  0
 534 #else
 535 #  error Unknown architecture
 536 #endif
 537
 538 /*
 539  * Deprecation macro
 540  */
 541 #if __GNUC__ >= 3
 542 #define __deprecated __attribute__((deprecated))
 543 #else
 544 #define __deprecated /* nothing */
 545 #endif
 546
 547 /*****************************************
 548  *  Public darwin-specific feature macros
 549  *****************************************/
 550
 551 /*
 552  * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and
 553  * structures modified for 64-bit inodes (like struct stat) will be used.
 554  */
 555 #if __DARWIN_64_BIT_INO_T
 556 #define _DARWIN_FEATURE_64_BIT_INODE            1
 557 #endif
 558
 559 /*
 560  * _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE indicates when the long double type
 561  * is the same as the double type (ppc and arm only)
 562  */
 563 #if __DARWIN_LONG_DOUBLE_IS_DOUBLE
 564 #define _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE   1
 565 #endif
 566
 567 /*
 568  * _DARWIN_FEATURE_64_ONLY_BIT_INODE indicates that the ino_t type may only
 569  * be 64-bit; there is no support for 32-bit ino_t when this macro is defined
 570  * (and non-zero).  There is no struct stat64 either, as the regular
 571  * struct stat will already be the 64-bit version.
 572  */
 573 #if __DARWIN_ONLY_64_BIT_INO_T
 574 #define _DARWIN_FEATURE_ONLY_64_BIT_INODE       1
 575 #endif
 576
 577 /*
 578  * _DARWIN_FEATURE_ONLY_VERS_1050 indicates that only those APIs updated
 579  * in 10.5 exists; no pre-10.5 variants are available.
 580  */
 581 #if __DARWIN_ONLY_VERS_1050
 582 #define _DARWIN_FEATURE_ONLY_VERS_1050          1
 583 #endif
 584
 585 /*
 586  * _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE indicates only UNIX conforming API
 587  * are available (the legacy BSD APIs are not available)
 588  */
 589 #if __DARWIN_ONLY_UNIX_CONFORMANCE
 590 #define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE   1
 591 #endif
 592
 593 /*
 594  * _DARWIN_FEATURE_UNIX_CONFORMANCE indicates whether UNIX conformance is on,
 595  * and specifies the conformance level (3 is SUSv3)
 596  */
 597 #if __DARWIN_UNIX03
 598 #define _DARWIN_FEATURE_UNIX_CONFORMANCE        3
 599 #endif
 600
 601 /*
 602  * This macro casts away the qualifier from the variable
 603  *
 604  * Note: use at your own risk, removing qualifiers can result in
 605  * catastrophic run-time failures.
 606  */
 607 #ifndef __CAST_AWAY_QUALIFIER
 608 #define __CAST_AWAY_QUALIFIER(variable, qualifier, type)  (type) ((char *)0 + ((qualifier char *)(variable) - (qualifier char *)0) )
 609 #endif
 610
 611 #endif /* !_CDEFS_H_ */