2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Berkeley Software Design, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)cdefs.h 8.8 (Berkeley) 1/9/95
40 * Testing against Clang-specific extensions.
43 #ifndef __has_attribute
44 #define __has_attribute(x) 0
46 #ifndef __has_extension
47 #define __has_extension __has_feature
50 #define __has_feature(x) 0
53 #define __has_include(x) 0
56 #define __has_builtin(x) 0
59 #if defined(__cplusplus)
60 #define __BEGIN_DECLS extern "C" {
68 * This code has been put in place to help reduce the addition of
69 * compiler specific defines in FreeBSD code. It helps to aid in
70 * having a compiler-agnostic source tree.
73 #if defined(__GNUC__) || defined(__INTEL_COMPILER)
75 #if __GNUC__ >= 3 || defined(__INTEL_COMPILER)
76 #define __GNUCLIKE_ASM 3
77 #define __GNUCLIKE_MATH_BUILTIN_CONSTANTS
79 #define __GNUCLIKE_ASM 2
81 #define __GNUCLIKE___TYPEOF 1
82 #define __GNUCLIKE___OFFSETOF 1
83 #define __GNUCLIKE___SECTION 1
85 #ifndef __INTEL_COMPILER
86 # define __GNUCLIKE_CTOR_SECTION_HANDLING 1
89 #define __GNUCLIKE_BUILTIN_CONSTANT_P 1
90 # if defined(__INTEL_COMPILER) && defined(__cplusplus) \
91 && __INTEL_COMPILER < 800
92 # undef __GNUCLIKE_BUILTIN_CONSTANT_P
95 #if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3) && !defined(__INTEL_COMPILER)
96 # define __GNUCLIKE_BUILTIN_VARARGS 1
97 # define __GNUCLIKE_BUILTIN_STDARG 1
98 # define __GNUCLIKE_BUILTIN_VAALIST 1
101 #if defined(__GNUC__)
102 # define __GNUC_VA_LIST_COMPATIBILITY 1
106 * Compiler memory barriers, specific to gcc and clang.
108 #if defined(__GNUC__)
109 #define __compiler_membar() __asm __volatile(" " : : : "memory")
112 #ifndef __INTEL_COMPILER
113 # define __GNUCLIKE_BUILTIN_NEXT_ARG 1
114 # define __GNUCLIKE_MATH_BUILTIN_RELOPS
117 #define __GNUCLIKE_BUILTIN_MEMCPY 1
119 /* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */
120 #define __CC_SUPPORTS_INLINE 1
121 #define __CC_SUPPORTS___INLINE 1
122 #define __CC_SUPPORTS___INLINE__ 1
124 #define __CC_SUPPORTS___FUNC__ 1
125 #define __CC_SUPPORTS_WARNING 1
127 #define __CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */
129 #define __CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1
131 #endif /* __GNUC__ || __INTEL_COMPILER */
134 * Macro to test if we're using a specific version of gcc or later.
136 #if defined(__GNUC__) && !defined(__INTEL_COMPILER)
137 #define __GNUC_PREREQ__(ma, mi) \
138 (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi))
140 #define __GNUC_PREREQ__(ma, mi) 0
144 * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
145 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
146 * The __CONCAT macro is a bit tricky to use if it must work in non-ANSI
147 * mode -- there must be no spaces between its arguments, and for nested
148 * __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also
149 * concatenate double-quoted strings produced by the __STRING macro, but
150 * this only works with ANSI C.
152 * __XSTRING is like __STRING, but it expands any macros in its argument
153 * first. It is only available with ANSI C.
155 #if defined(__STDC__) || defined(__cplusplus)
156 #define __P(protos) protos /* full-blown ANSI C */
157 #define __CONCAT1(x,y) x ## y
158 #define __CONCAT(x,y) __CONCAT1(x,y)
159 #define __STRING(x) #x /* stringify without expanding x */
160 #define __XSTRING(x) __STRING(x) /* expand x, then stringify */
162 #define __const const /* define reserved names to standard */
163 #define __signed signed
164 #define __volatile volatile
165 #if defined(__cplusplus)
166 #define __inline inline /* convert to C++ keyword */
168 #if !(defined(__CC_SUPPORTS___INLINE))
169 #define __inline /* delete GCC keyword */
170 #endif /* ! __CC_SUPPORTS___INLINE */
171 #endif /* !__cplusplus */
173 #else /* !(__STDC__ || __cplusplus) */
174 #define __P(protos) () /* traditional C preprocessor */
175 #define __CONCAT(x,y) x/**/y
176 #define __STRING(x) "x"
178 #if !defined(__CC_SUPPORTS___INLINE)
179 #define __const /* delete pseudo-ANSI C keywords */
184 * In non-ANSI C environments, new programs will want ANSI-only C keywords
185 * deleted from the program and old programs will want them left alone.
186 * When using a compiler other than gcc, programs using the ANSI C keywords
187 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
188 * When using "gcc -traditional", we assume that this is the intent; if
189 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
191 #ifndef NO_ANSI_KEYWORDS
192 #define const /* delete ANSI C keywords */
196 #endif /* !NO_ANSI_KEYWORDS */
197 #endif /* !__CC_SUPPORTS___INLINE */
198 #endif /* !(__STDC__ || __cplusplus) */
201 * Compiler-dependent macros to help declare dead (non-returning) and
202 * pure (no side effects) functions, and unused variables. They are
203 * null except for versions of gcc that are known to support the features
204 * properly (old versions of gcc-2 supported the dead and pure features
205 * in a different (wrong) way). If we do not provide an implementation
206 * for a given compiler, let the compile fail if it is told to use
207 * a feature that we cannot live without.
217 #if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER)
222 #if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 && !defined(__INTEL_COMPILER)
223 #define __dead2 __attribute__((__noreturn__))
224 #define __pure2 __attribute__((__const__))
226 /* XXX Find out what to do for __packed, __aligned and __section */
228 #if __GNUC_PREREQ__(2, 7)
229 #define __dead2 __attribute__((__noreturn__))
230 #define __pure2 __attribute__((__const__))
231 #define __unused __attribute__((__unused__))
232 #define __used __attribute__((__used__))
233 #define __packed __attribute__((__packed__))
234 #define __aligned(x) __attribute__((__aligned__(x)))
235 #define __section(x) __attribute__((__section__(x)))
237 #if defined(__INTEL_COMPILER)
238 #define __dead2 __attribute__((__noreturn__))
239 #define __pure2 __attribute__((__const__))
240 #define __unused __attribute__((__unused__))
241 #define __used __attribute__((__used__))
242 #define __packed __attribute__((__packed__))
243 #define __aligned(x) __attribute__((__aligned__(x)))
244 #define __section(x) __attribute__((__section__(x)))
248 #if !__GNUC_PREREQ__(2, 95)
249 #define __alignof(x) __offsetof(struct { char __a; x __b; }, __b)
253 * Keywords added in C11.
256 #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L || defined(lint)
258 #if !__has_extension(c_alignas)
259 #if (defined(__cplusplus) && __cplusplus >= 201103L) || \
260 __has_extension(cxx_alignas)
261 #define _Alignas(x) alignas(x)
263 /* XXX: Only emulates _Alignas(constant-expression); not _Alignas(type-name). */
264 #define _Alignas(x) __aligned(x)
268 #if defined(__cplusplus) && __cplusplus >= 201103L
269 #define _Alignof(x) alignof(x)
271 #define _Alignof(x) __alignof(x)
274 #if !__has_extension(c_atomic) && !__has_extension(cxx_atomic)
276 * No native support for _Atomic(). Place object in structure to prevent
277 * most forms of direct non-atomic access.
279 #define _Atomic(T) struct { T volatile __val; }
282 #if defined(__cplusplus) && __cplusplus >= 201103L
283 #define _Noreturn [[noreturn]]
285 #define _Noreturn __dead2
288 #if !__has_extension(c_static_assert)
289 #if (defined(__cplusplus) && __cplusplus >= 201103L) || \
290 __has_extension(cxx_static_assert)
291 #define _Static_assert(x, y) static_assert(x, y)
292 #elif defined(__COUNTER__)
293 #define _Static_assert(x, y) __Static_assert(x, __COUNTER__)
294 #define __Static_assert(x, y) ___Static_assert(x, y)
295 #define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] \
298 #define _Static_assert(x, y) struct __hack
302 #if !__has_extension(c_thread_local)
303 /* XXX: Change this to test against C++11 when clang in base supports it. */
304 #if /* (defined(__cplusplus) && __cplusplus >= 201103L) || */ \
305 __has_extension(cxx_thread_local)
306 #define _Thread_local thread_local
308 #define _Thread_local __thread
312 #endif /* __STDC_VERSION__ || __STDC_VERSION__ < 201112L */
315 * Emulation of C11 _Generic(). Unlike the previously defined C11
316 * keywords, it is not possible to implement this using exactly the same
317 * syntax. Therefore implement something similar under the name
318 * __generic(). Unlike _Generic(), this macro can only distinguish
319 * between a single type, so it requires nested invocations to
320 * distinguish multiple cases.
323 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
324 #define __generic(expr, t, yes, no) \
325 _Generic(expr, t: yes, default: no)
326 #elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus)
327 #define __generic(expr, t, yes, no) \
328 __builtin_choose_expr( \
329 __builtin_types_compatible_p(__typeof(expr), t), yes, no)
332 #if __GNUC_PREREQ__(2, 96)
333 #define __malloc_like __attribute__((__malloc__))
334 #define __pure __attribute__((__pure__))
336 #define __malloc_like
340 #if __GNUC_PREREQ__(3, 1) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)
341 #define __always_inline __attribute__((__always_inline__))
343 #define __always_inline
346 #if __GNUC_PREREQ__(3, 1)
347 #define __noinline __attribute__ ((__noinline__))
352 #if __GNUC_PREREQ__(3, 3)
353 #define __nonnull(x) __attribute__((__nonnull__(x)))
358 #if __GNUC_PREREQ__(3, 4)
359 #define __fastcall __attribute__((__fastcall__))
360 #define __result_use_check __attribute__((__warn_unused_result__))
363 #define __result_use_check
366 #if __GNUC_PREREQ__(4, 1)
367 #define __returns_twice __attribute__((__returns_twice__))
369 #define __returns_twice
372 /* XXX: should use `#if __STDC_VERSION__ < 199901'. */
373 #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
374 #define __func__ NULL
377 #if (defined(__INTEL_COMPILER) || (defined(__GNUC__) && __GNUC__ >= 2)) && !defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901
378 #define __LONG_LONG_SUPPORTED
381 /* C++11 exposes a load of C99 stuff */
382 #if defined(__cplusplus) && __cplusplus >= 201103L
383 #define __LONG_LONG_SUPPORTED
384 #ifndef __STDC_LIMIT_MACROS
385 #define __STDC_LIMIT_MACROS
387 #ifndef __STDC_CONSTANT_MACROS
388 #define __STDC_CONSTANT_MACROS
393 * GCC 2.95 provides `__restrict' as an extension to C90 to support the
394 * C99-specific `restrict' type qualifier. We happen to use `__restrict' as
395 * a way to define the `restrict' type qualifier without disturbing older
396 * software that is unaware of C99 keywords.
398 #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
399 #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901 || defined(lint)
402 #define __restrict restrict
407 * GNU C version 2.96 adds explicit branch prediction so that
408 * the CPU back-end can hint the processor and also so that
409 * code blocks can be reordered such that the predicted path
410 * sees a more linear flow, thus improving cache behavior, etc.
412 * The following two macros provide us with a way to utilize this
413 * compiler feature. Use __predict_true() if you expect the expression
414 * to evaluate to true, and __predict_false() if you expect the
415 * expression to evaluate to false.
417 * A few notes about usage:
419 * * Generally, __predict_false() error condition checks (unless
420 * you have some _strong_ reason to do otherwise, in which case
421 * document it), and/or __predict_true() `no-error' condition
422 * checks, assuming you want to optimize for the no-error case.
424 * * Other than that, if you don't know the likelihood of a test
425 * succeeding from empirical or other `hard' evidence, don't
428 * * These are meant to be used in places that are run `a lot'.
429 * It is wasteful to make predictions in code that is run
430 * seldomly (e.g. at subsystem initialization time) as the
431 * basic block reordering that this affects can often generate
434 #if __GNUC_PREREQ__(2, 96)
435 #define __predict_true(exp) __builtin_expect((exp), 1)
436 #define __predict_false(exp) __builtin_expect((exp), 0)
438 #define __predict_true(exp) (exp)
439 #define __predict_false(exp) (exp)
442 #if __GNUC_PREREQ__(4, 0)
443 #define __hidden __attribute__((__visibility__("hidden")))
444 #define __exported __attribute__((__visibility__("default")))
451 * We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
454 #if __GNUC_PREREQ__(4, 1)
455 #define __offsetof(type, field) __builtin_offsetof(type, field)
458 #define __offsetof(type, field) \
459 ((__size_t)(__uintptr_t)((const volatile void *)&((type *)0)->field))
461 #define __offsetof(type, field) \
462 (__offsetof__ (reinterpret_cast <__size_t> \
463 (&reinterpret_cast <const volatile char &> \
464 (static_cast<type *> (0)->field))))
467 #define __rangeof(type, start, end) \
468 (__offsetof(type, end) - __offsetof(type, start))
471 * Given the pointer x to the member m of the struct s, return
472 * a pointer to the containing structure. When using GCC, we first
473 * assign pointer x to a local variable, to check that its type is
474 * compatible with member m.
476 #if __GNUC_PREREQ__(3, 1)
477 #define __containerof(x, s, m) ({ \
478 const volatile __typeof(((s *)0)->m) *__x = (x); \
479 __DEQUALIFY(s *, (const volatile char *)__x - __offsetof(s, m));\
482 #define __containerof(x, s, m) \
483 __DEQUALIFY(s *, (const volatile char *)(x) - __offsetof(s, m))
487 * Compiler-dependent macros to declare that functions take printf-like
488 * or scanf-like arguments. They are null except for versions of gcc
489 * that are known to support the features properly (old versions of gcc-2
490 * didn't permit keeping the keywords out of the application namespace).
492 #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
493 #define __printflike(fmtarg, firstvararg)
494 #define __scanflike(fmtarg, firstvararg)
495 #define __format_arg(fmtarg)
496 #define __strfmonlike(fmtarg, firstvararg)
497 #define __strftimelike(fmtarg, firstvararg)
499 #define __printflike(fmtarg, firstvararg) \
500 __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
501 #define __scanflike(fmtarg, firstvararg) \
502 __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
503 #define __format_arg(fmtarg) __attribute__((__format_arg__ (fmtarg)))
504 #define __strfmonlike(fmtarg, firstvararg) \
505 __attribute__((__format__ (__strfmon__, fmtarg, firstvararg)))
506 #define __strftimelike(fmtarg, firstvararg) \
507 __attribute__((__format__ (__strftime__, fmtarg, firstvararg)))
510 /* Compiler-dependent macros that rely on FreeBSD-specific extensions. */
511 #if defined(__FreeBSD_cc_version) && __FreeBSD_cc_version >= 300001 && \
512 defined(__GNUC__) && !defined(__INTEL_COMPILER)
513 #define __printf0like(fmtarg, firstvararg) \
514 __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))
516 #define __printf0like(fmtarg, firstvararg)
519 #if defined(__GNUC__) || defined(__INTEL_COMPILER)
520 #ifndef __INTEL_COMPILER
521 #define __strong_reference(sym,aliassym) \
522 extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)))
525 #define __weak_reference(sym,alias) \
526 __asm__(".weak " #alias); \
527 __asm__(".equ " #alias ", " #sym)
528 #define __warn_references(sym,msg) \
529 __asm__(".section .gnu.warning." #sym); \
530 __asm__(".asciz \"" msg "\""); \
532 #define __sym_compat(sym,impl,verid) \
533 __asm__(".symver " #impl ", " #sym "@" #verid)
534 #define __sym_default(sym,impl,verid) \
535 __asm__(".symver " #impl ", " #sym "@@" #verid)
537 #define __weak_reference(sym,alias) \
538 __asm__(".weak alias"); \
539 __asm__(".equ alias, sym")
540 #define __warn_references(sym,msg) \
541 __asm__(".section .gnu.warning.sym"); \
542 __asm__(".asciz \"msg\""); \
544 #define __sym_compat(sym,impl,verid) \
545 __asm__(".symver impl, sym@verid")
546 #define __sym_default(impl,sym,verid) \
547 __asm__(".symver impl, sym@@verid")
548 #endif /* __STDC__ */
549 #endif /* __GNUC__ || __INTEL_COMPILER */
551 #define __GLOBL1(sym) __asm__(".globl " #sym)
552 #define __GLOBL(sym) __GLOBL1(sym)
554 #if defined(__GNUC__) || defined(__INTEL_COMPILER)
555 #define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"")
558 * The following definition might not work well if used in header files,
559 * but it should be better than nothing. If you want a "do nothing"
560 * version, then it should generate some harmless declaration, such as:
561 * #define __IDSTRING(name,string) struct __hack
563 #define __IDSTRING(name,string) static const char name[] __unused = string
567 * Embed the rcs id of a source file in the resulting library. Note that in
568 * more recent ELF binutils, we use .ident allowing the ID to be stripped.
570 * __FBSDID("$FreeBSD$");
573 #if !defined(lint) && !defined(STRIP_FBSDID)
574 #define __FBSDID(s) __IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
576 #define __FBSDID(s) struct __hack
582 #define __RCSID(s) __IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
584 #define __RCSID(s) struct __hack
588 #ifndef __RCSID_SOURCE
589 #ifndef NO__RCSID_SOURCE
590 #define __RCSID_SOURCE(s) __IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s)
592 #define __RCSID_SOURCE(s) struct __hack
598 #define __SCCSID(s) __IDSTRING(__CONCAT(__sccsid_,__LINE__),s)
600 #define __SCCSID(s) struct __hack
605 #ifndef NO__COPYRIGHT
606 #define __COPYRIGHT(s) __IDSTRING(__CONCAT(__copyright_,__LINE__),s)
608 #define __COPYRIGHT(s) struct __hack
613 #define __DECONST(type, var) ((type)(__uintptr_t)(const void *)(var))
617 #define __DEVOLATILE(type, var) ((type)(__uintptr_t)(volatile void *)(var))
621 #define __DEQUALIFY(type, var) ((type)(__uintptr_t)(const volatile void *)(var))
625 * The following definitions are an extension of the behavior originally
626 * implemented in <sys/_posix.h>, but with a different level of granularity.
627 * POSIX.1 requires that the macros we test be defined before any standard
628 * header file is included.
630 * Here's a quick run-down of the versions:
631 * defined(_POSIX_SOURCE) 1003.1-1988
632 * _POSIX_C_SOURCE == 1 1003.1-1990
633 * _POSIX_C_SOURCE == 2 1003.2-1992 C Language Binding Option
634 * _POSIX_C_SOURCE == 199309 1003.1b-1993
635 * _POSIX_C_SOURCE == 199506 1003.1c-1995, 1003.1i-1995,
636 * and the omnibus ISO/IEC 9945-1: 1996
637 * _POSIX_C_SOURCE == 200112 1003.1-2001
638 * _POSIX_C_SOURCE == 200809 1003.1-2008
640 * In addition, the X/Open Portability Guide, which is now the Single UNIX
641 * Specification, defines a feature-test macro which indicates the version of
642 * that specification, and which subsumes _POSIX_C_SOURCE.
644 * Our macros begin with two underscores to avoid namespace screwage.
647 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
648 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1
649 #undef _POSIX_C_SOURCE /* Probably illegal, but beyond caring now. */
650 #define _POSIX_C_SOURCE 199009
653 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
654 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2
655 #undef _POSIX_C_SOURCE
656 #define _POSIX_C_SOURCE 199209
659 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
661 #if _XOPEN_SOURCE - 0 >= 700
662 #define __XSI_VISIBLE 700
663 #undef _POSIX_C_SOURCE
664 #define _POSIX_C_SOURCE 200809
665 #elif _XOPEN_SOURCE - 0 >= 600
666 #define __XSI_VISIBLE 600
667 #undef _POSIX_C_SOURCE
668 #define _POSIX_C_SOURCE 200112
669 #elif _XOPEN_SOURCE - 0 >= 500
670 #define __XSI_VISIBLE 500
671 #undef _POSIX_C_SOURCE
672 #define _POSIX_C_SOURCE 199506
677 * Deal with all versions of POSIX. The ordering relative to the tests above is
680 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
681 #define _POSIX_C_SOURCE 198808
683 #ifdef _POSIX_C_SOURCE
684 #if _POSIX_C_SOURCE >= 200809
685 #define __POSIX_VISIBLE 200809
686 #define __ISO_C_VISIBLE 1999
687 #elif _POSIX_C_SOURCE >= 200112
688 #define __POSIX_VISIBLE 200112
689 #define __ISO_C_VISIBLE 1999
690 #elif _POSIX_C_SOURCE >= 199506
691 #define __POSIX_VISIBLE 199506
692 #define __ISO_C_VISIBLE 1990
693 #elif _POSIX_C_SOURCE >= 199309
694 #define __POSIX_VISIBLE 199309
695 #define __ISO_C_VISIBLE 1990
696 #elif _POSIX_C_SOURCE >= 199209
697 #define __POSIX_VISIBLE 199209
698 #define __ISO_C_VISIBLE 1990
699 #elif _POSIX_C_SOURCE >= 199009
700 #define __POSIX_VISIBLE 199009
701 #define __ISO_C_VISIBLE 1990
703 #define __POSIX_VISIBLE 198808
704 #define __ISO_C_VISIBLE 0
705 #endif /* _POSIX_C_SOURCE */
708 * Deal with _ANSI_SOURCE:
709 * If it is defined, and no other compilation environment is explicitly
710 * requested, then define our internal feature-test macros to zero. This
711 * makes no difference to the preprocessor (undefined symbols in preprocessing
712 * expressions are defined to have value zero), but makes it more convenient for
713 * a test program to print out the values.
715 * If a program mistakenly defines _ANSI_SOURCE and some other macro such as
716 * _POSIX_C_SOURCE, we will assume that it wants the broader compilation
717 * environment (and in fact we will never get here).
719 #if defined(_ANSI_SOURCE) /* Hide almost everything. */
720 #define __POSIX_VISIBLE 0
721 #define __XSI_VISIBLE 0
722 #define __BSD_VISIBLE 0
723 #define __ISO_C_VISIBLE 1990
724 #elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */
725 #define __POSIX_VISIBLE 0
726 #define __XSI_VISIBLE 0
727 #define __BSD_VISIBLE 0
728 #define __ISO_C_VISIBLE 1999
729 #elif defined(_C11_SOURCE) /* Localism to specify strict C11 env. */
730 #define __POSIX_VISIBLE 0
731 #define __XSI_VISIBLE 0
732 #define __BSD_VISIBLE 0
733 #define __ISO_C_VISIBLE 2011
734 #else /* Default environment: show everything. */
735 #define __POSIX_VISIBLE 200809
736 #define __XSI_VISIBLE 700
737 #define __BSD_VISIBLE 1
738 #define __ISO_C_VISIBLE 2011
742 #if defined(__mips) || defined(__powerpc64__)
746 #endif /* !_SYS_CDEFS_H_ */