source: trunk/libs/newlib/src/newlib/libc/include/sys/features.h @ 444

Last change on this file since 444 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 15.5 KB
Line 
1/*
2 *  Written by Joel Sherrill <joel@OARcorp.com>.
3 *
4 *  COPYRIGHT (c) 1989-2014.
5 *
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  Permission to use, copy, modify, and distribute this software for any
9 *  purpose without fee is hereby granted, provided that this entire notice
10 *  is included in all copies of any software which is or includes a copy
11 *  or modification of this software.
12 *
13 *  THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
14 *  WARRANTY.  IN PARTICULAR,  THE AUTHOR MAKES NO REPRESENTATION
15 *  OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS
16 *  SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
17 *
18 *  $Id$
19 */
20
21#ifndef _SYS_FEATURES_H
22#define _SYS_FEATURES_H
23
24#ifdef __cplusplus
25extern "C" {
26#endif
27
28#include <_newlib_version.h>
29
30/* Macro to test version of GCC.  Returns 0 for non-GCC or too old GCC. */
31#ifndef __GNUC_PREREQ
32# if defined __GNUC__ && defined __GNUC_MINOR__
33#  define __GNUC_PREREQ(maj, min) \
34        ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
35# else
36#  define __GNUC_PREREQ(maj, min) 0
37# endif
38#endif /* __GNUC_PREREQ */
39/* Version with trailing underscores for BSD compatibility. */
40#define __GNUC_PREREQ__(ma, mi) __GNUC_PREREQ(ma, mi)
41
42
43/*
44 * Feature test macros control which symbols are exposed by the system
45 * headers.  Any of these must be defined before including any headers.
46 *
47 * __STRICT_ANSI__ (defined by gcc -ansi, -std=c90, -std=c99, or -std=c11)
48 *      ISO C
49 *
50 * _POSIX_SOURCE (deprecated by _POSIX_C_SOURCE=1)
51 * _POSIX_C_SOURCE >= 1
52 *      POSIX.1-1990
53 *
54 * _POSIX_C_SOURCE >= 2
55 *      POSIX.2-1992
56 *
57 * _POSIX_C_SOURCE >= 199309L
58 *      POSIX.1b-1993 Real-time extensions
59 *
60 * _POSIX_C_SOURCE >= 199506L
61 *      POSIX.1c-1995 Threads extensions
62 *
63 * _POSIX_C_SOURCE >= 200112L
64 *      POSIX.1-2001 and C99
65 *
66 * _POSIX_C_SOURCE >= 200809L
67 *      POSIX.1-2008
68 *
69 * _XOPEN_SOURCE
70 *      POSIX.1-1990 and XPG4
71 *
72 * _XOPEN_SOURCE_EXTENDED
73 *      SUSv1 (POSIX.2-1992 plus XPG4v2)
74 *
75 * _XOPEN_SOURCE >= 500
76 *      SUSv2 (POSIX.1c-1995 plus XSI)
77 *
78 * _XOPEN_SOURCE >= 600
79 *      SUSv3 (POSIX.1-2001 plus XSI) and C99
80 *
81 * _XOPEN_SOURCE >= 700
82 *      SUSv4 (POSIX.1-2008 plus XSI)
83 *
84 * _ISOC99_SOURCE or gcc -std=c99 or g++
85 *      ISO C99
86 *
87 * _ISOC11_SOURCE or gcc -std=c11 or g++ -std=c++11
88 *      ISO C11
89 *
90 * _ATFILE_SOURCE (implied by _POSIX_C_SOURCE >= 200809L)
91 *      "at" functions
92 *
93 * _LARGEFILE_SOURCE (deprecated by _XOPEN_SOURCE >= 500)
94 *      fseeko, ftello
95 *
96 * _GNU_SOURCE
97 *      All of the above plus GNU extensions
98 *
99 * _BSD_SOURCE (deprecated by _DEFAULT_SOURCE)
100 * _SVID_SOURCE (deprecated by _DEFAULT_SOURCE)
101 * _DEFAULT_SOURCE (or none of the above)
102 *      POSIX-1.2008 with BSD and SVr4 extensions
103 *
104 * _FORTIFY_SOURCE = 1 or 2
105 *      Object Size Checking function wrappers
106 */
107
108#ifdef _GNU_SOURCE
109#undef _ATFILE_SOURCE
110#define _ATFILE_SOURCE          1
111#undef  _DEFAULT_SOURCE
112#define _DEFAULT_SOURCE         1
113#undef _ISOC99_SOURCE
114#define _ISOC99_SOURCE          1
115#undef _ISOC11_SOURCE
116#define _ISOC11_SOURCE          1
117#undef _POSIX_SOURCE
118#define _POSIX_SOURCE           1
119#undef _POSIX_C_SOURCE
120#define _POSIX_C_SOURCE         200809L
121#undef _XOPEN_SOURCE
122#define _XOPEN_SOURCE           700
123#undef _XOPEN_SOURCE_EXTENDED
124#define _XOPEN_SOURCE_EXTENDED  1
125#endif /* _GNU_SOURCE */
126
127#if defined(_BSD_SOURCE) || defined(_SVID_SOURCE) || \
128   (!defined(__STRICT_ANSI__) && !defined(_ANSI_SOURCE) && \
129   !defined(_ISOC99_SOURCE) && !defined(_POSIX_SOURCE) && \
130   !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE))
131#undef _DEFAULT_SOURCE
132#define _DEFAULT_SOURCE         1
133#endif
134
135#if defined(_DEFAULT_SOURCE)
136#undef _POSIX_SOURCE
137#define _POSIX_SOURCE           1
138#undef _POSIX_C_SOURCE
139#define _POSIX_C_SOURCE         200809L
140#endif
141
142#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) && \
143  ((!defined(__STRICT_ANSI__) && !defined(_ANSI_SOURCE)) || \
144   (_XOPEN_SOURCE - 0) >= 500)
145#define _POSIX_SOURCE           1
146#if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 700
147#define _POSIX_C_SOURCE         200809L
148#elif (_XOPEN_SOURCE - 0) >= 600
149#define _POSIX_C_SOURCE         200112L
150#elif (_XOPEN_SOURCE - 0) >= 500
151#define _POSIX_C_SOURCE         199506L
152#elif (_XOPEN_SOURCE - 0) < 500
153#define _POSIX_C_SOURCE         2
154#endif
155#endif
156
157#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200809
158#undef _ATFILE_SOURCE
159#define _ATFILE_SOURCE          1
160#endif
161
162/*
163 * The following private macros are used throughout the headers to control
164 * which symbols should be exposed.  They are for internal use only, as
165 * indicated by the leading double underscore, and must never be used outside
166 * of these headers.
167 *
168 * __POSIX_VISIBLE
169 *      any version of POSIX.1; enabled by default, or with _POSIX_SOURCE,
170 *      any value of _POSIX_C_SOURCE, or _XOPEN_SOURCE >= 500.
171 *
172 * __POSIX_VISIBLE >= 2
173 *      POSIX.2-1992; enabled by default, with _POSIX_C_SOURCE >= 2,
174 *      or _XOPEN_SOURCE >= 500.
175 *
176 * __POSIX_VISIBLE >= 199309
177 *      POSIX.1b-1993; enabled by default, with _POSIX_C_SOURCE >= 199309L,
178 *      or _XOPEN_SOURCE >= 500.
179 *
180 * __POSIX_VISIBLE >= 199506
181 *      POSIX.1c-1995; enabled by default, with _POSIX_C_SOURCE >= 199506L,
182 *      or _XOPEN_SOURCE >= 500.
183 *
184 * __POSIX_VISIBLE >= 200112
185 *      POSIX.1-2001; enabled by default, with _POSIX_C_SOURCE >= 200112L,
186 *      or _XOPEN_SOURCE >= 600.
187 *
188 * __POSIX_VISIBLE >= 200809
189 *      POSIX.1-2008; enabled by default, with _POSIX_C_SOURCE >= 200809L,
190 *      or _XOPEN_SOURCE >= 700.
191 *
192 * __XSI_VISIBLE
193 *      XPG4 XSI extensions; enabled with any version of _XOPEN_SOURCE.
194 *
195 * __XSI_VISIBLE >= 4
196 *      SUSv1 XSI extensions; enabled with both _XOPEN_SOURCE and
197 *      _XOPEN_SOURCE_EXTENDED together.
198 *
199 * __XSI_VISIBLE >= 500
200 *      SUSv2 XSI extensions; enabled with _XOPEN_SOURCE >= 500.
201 *
202 * __XSI_VISIBLE >= 600
203 *      SUSv3 XSI extensions; enabled with _XOPEN_SOURCE >= 600.
204 *
205 * __XSI_VISIBLE >= 700
206 *      SUSv4 XSI extensions; enabled with _XOPEN_SOURCE >= 700.
207 *
208 * __ISO_C_VISIBLE >= 1999
209 *      ISO C99; enabled with gcc -std=c99 or newer (on by default since GCC 5),
210 *      any version of C++, or with _ISOC99_SOURCE, _POSIX_C_SOURCE >= 200112L,
211 *      or _XOPEN_SOURCE >= 600.
212 *
213 * __ISO_C_VISIBLE >= 2011
214 *      ISO C11; enabled with gcc -std=c11 or newer (on by default since GCC 5),
215 *      g++ -std=c++11 or newer (on by default since GCC 6), or with
216 *      _ISOC11_SOURCE.
217 *
218 * __ATFILE_VISIBLE
219 *      "at" functions; enabled by default, with _ATFILE_SOURCE,
220 *      _POSIX_C_SOURCE >= 200809L, or _XOPEN_SOURCE >= 700.
221 *
222 * __LARGEFILE_VISIBLE
223 *      fseeko, ftello; enabled with _LARGEFILE_SOURCE or _XOPEN_SOURCE >= 500.
224 *
225 * __BSD_VISIBLE
226 *      BSD extensions; enabled by default, or with _BSD_SOURCE.
227 *
228 * __SVID_VISIBLE
229 *      SVr4 extensions; enabled by default, or with _SVID_SOURCE.
230 *
231 * __MISC_VISIBLE
232 *      Extensions found in both BSD and SVr4 (shorthand for
233 *      (__BSD_VISIBLE || __SVID_VISIBLE)), or newlib-specific
234 *      extensions; enabled by default.
235 *
236 * __GNU_VISIBLE
237 *      GNU extensions; enabled with _GNU_SOURCE.
238 *
239 * __SSP_FORTIFY_LEVEL
240 *      Object Size Checking; defined to 0 (off), 1, or 2.
241 *
242 * In all cases above, "enabled by default" means either by defining
243 * _DEFAULT_SOURCE, or by not defining any of the public feature test macros.
244 */
245
246#ifdef _ATFILE_SOURCE
247#define __ATFILE_VISIBLE        1
248#else
249#define __ATFILE_VISIBLE        0
250#endif
251
252#ifdef _DEFAULT_SOURCE
253#define __BSD_VISIBLE           1
254#else
255#define __BSD_VISIBLE           0
256#endif
257
258#ifdef _GNU_SOURCE
259#define __GNU_VISIBLE           1
260#else
261#define __GNU_VISIBLE           0
262#endif
263
264#if defined(_ISOC11_SOURCE) || \
265  (__STDC_VERSION__ - 0) >= 201112L || (__cplusplus - 0) >= 201103L
266#define __ISO_C_VISIBLE         2011
267#elif defined(_ISOC99_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200112L || \
268  (__STDC_VERSION__ - 0) >= 199901L || defined(__cplusplus)
269#define __ISO_C_VISIBLE         1999
270#else
271#define __ISO_C_VISIBLE         1990
272#endif
273
274#if defined(_LARGEFILE_SOURCE) || (_XOPEN_SOURCE - 0) >= 500
275#define __LARGEFILE_VISIBLE     1
276#else
277#define __LARGEFILE_VISIBLE     0
278#endif
279
280#ifdef _DEFAULT_SOURCE
281#define __MISC_VISIBLE          1
282#else
283#define __MISC_VISIBLE          0
284#endif
285
286#if (_POSIX_C_SOURCE - 0) >= 200809L
287#define __POSIX_VISIBLE         200809
288#elif (_POSIX_C_SOURCE - 0) >= 200112L
289#define __POSIX_VISIBLE         200112
290#elif (_POSIX_C_SOURCE - 0) >= 199506L
291#define __POSIX_VISIBLE         199506
292#elif (_POSIX_C_SOURCE - 0) >= 199309L
293#define __POSIX_VISIBLE         199309
294#elif (_POSIX_C_SOURCE - 0) >= 2 || defined(_XOPEN_SOURCE)
295#define __POSIX_VISIBLE         199209
296#elif defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE)
297#define __POSIX_VISIBLE         199009
298#else
299#define __POSIX_VISIBLE         0
300#endif
301
302#ifdef _DEFAULT_SOURCE
303#define __SVID_VISIBLE          1
304#else
305#define __SVID_VISIBLE          0
306#endif
307
308#if (_XOPEN_SOURCE - 0) >= 700
309#define __XSI_VISIBLE           700
310#elif (_XOPEN_SOURCE - 0) >= 600
311#define __XSI_VISIBLE           600
312#elif (_XOPEN_SOURCE - 0) >= 500
313#define __XSI_VISIBLE           500
314#elif defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)
315#define __XSI_VISIBLE           4
316#elif defined(_XOPEN_SOURCE)
317#define __XSI_VISIBLE           1
318#else
319#define __XSI_VISIBLE           0
320#endif
321
322#if _FORTIFY_SOURCE > 0 && !defined(__cplusplus) && !defined(__lint__) && \
323   (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4, 1)
324#  if _FORTIFY_SOURCE > 1
325#    define __SSP_FORTIFY_LEVEL 2
326#  else
327#    define __SSP_FORTIFY_LEVEL 1
328#  endif
329#else
330#  define __SSP_FORTIFY_LEVEL 0
331#endif
332
333/* RTEMS adheres to POSIX -- 1003.1b with some features from annexes.  */
334
335#ifdef __rtems__
336#define _POSIX_JOB_CONTROL              1
337#define _POSIX_SAVED_IDS                1
338#define _POSIX_VERSION                  199309L
339#define _POSIX_ASYNCHRONOUS_IO          1
340#define _POSIX_FSYNC                    1
341#define _POSIX_MAPPED_FILES             1
342#define _POSIX_MEMLOCK                  1
343#define _POSIX_MEMLOCK_RANGE            1
344#define _POSIX_MEMORY_PROTECTION        1
345#define _POSIX_MESSAGE_PASSING          1
346#define _POSIX_MONOTONIC_CLOCK          200112L
347#define _POSIX_CLOCK_SELECTION          200112L
348#define _POSIX_PRIORITIZED_IO           1
349#define _POSIX_PRIORITY_SCHEDULING      1
350#define _POSIX_REALTIME_SIGNALS         1
351#define _POSIX_SEMAPHORES               1
352#define _POSIX_SHARED_MEMORY_OBJECTS    1
353#define _POSIX_SYNCHRONIZED_IO          1
354#define _POSIX_TIMERS                   1
355#define _POSIX_BARRIERS                 200112L
356#define _POSIX_READER_WRITER_LOCKS      200112L
357#define _POSIX_SPIN_LOCKS               200112L
358
359
360/* In P1003.1b but defined by drafts at least as early as P1003.1c/D10  */
361#define _POSIX_THREADS                          1
362#define _POSIX_THREAD_ATTR_STACKADDR            1
363#define _POSIX_THREAD_ATTR_STACKSIZE            1
364#define _POSIX_THREAD_PRIORITY_SCHEDULING       1
365#define _POSIX_THREAD_PRIO_INHERIT              1
366#define _POSIX_THREAD_PRIO_PROTECT              1
367#define _POSIX_THREAD_PROCESS_SHARED            1
368#define _POSIX_THREAD_SAFE_FUNCTIONS            1
369
370/* P1003.4b/D8 defines the constants below this comment. */
371#define _POSIX_SPAWN                            1
372#define _POSIX_TIMEOUTS                         1
373#define _POSIX_CPUTIME                          1
374#define _POSIX_THREAD_CPUTIME                   1
375#define _POSIX_SPORADIC_SERVER                  1
376#define _POSIX_THREAD_SPORADIC_SERVER           1
377#define _POSIX_DEVICE_CONTROL                   1
378#define _POSIX_DEVCTL_DIRECTION                 1
379#define _POSIX_INTERRUPT_CONTROL                1
380#define _POSIX_ADVISORY_INFO                    1
381
382/* UNIX98 added some new pthread mutex attributes */
383#define _UNIX98_THREAD_MUTEX_ATTRIBUTES         1
384
385/* POSIX 1003.26-2003 defined device control method */
386#define _POSIX_26_VERSION                       200312L
387
388#endif
389
390/* XMK loosely adheres to POSIX -- 1003.1 */
391#ifdef __XMK__
392#define _POSIX_THREADS                          1
393#define _POSIX_THREAD_PRIORITY_SCHEDULING       1
394#endif
395
396
397#ifdef __svr4__
398# define _POSIX_JOB_CONTROL     1
399# define _POSIX_SAVED_IDS       1
400# define _POSIX_VERSION 199009L
401#endif
402
403#ifdef __CYGWIN__
404
405#if __POSIX_VISIBLE >= 200809
406#define _POSIX_VERSION                          200809L
407#define _POSIX2_VERSION                         200809L
408#elif __POSIX_VISIBLE >= 200112
409#define _POSIX_VERSION                          200112L
410#define _POSIX2_VERSION                         200112L
411#elif __POSIX_VISIBLE >= 199506
412#define _POSIX_VERSION                          199506L
413#define _POSIX2_VERSION                         199506L
414#elif __POSIX_VISIBLE >= 199309
415#define _POSIX_VERSION                          199309L
416#define _POSIX2_VERSION                         199209L
417#elif __POSIX_VISIBLE >= 199209
418#define _POSIX_VERSION                          199009L
419#define _POSIX2_VERSION                         199209L
420#elif __POSIX_VISIBLE
421#define _POSIX_VERSION                          199009L
422#endif
423#if __XSI_VISIBLE >= 4
424#define _XOPEN_VERSION                          __XSI_VISIBLE
425#endif
426
427#define _POSIX_ADVISORY_INFO                    200809L
428/* #define _POSIX_ASYNCHRONOUS_IO                   -1 */
429#define _POSIX_BARRIERS                         200809L
430#define _POSIX_CHOWN_RESTRICTED                      1
431#define _POSIX_CLOCK_SELECTION                  200809L
432#define _POSIX_CPUTIME                          200809L
433#define _POSIX_FSYNC                            200809L
434#define _POSIX_IPV6                             200809L
435#define _POSIX_JOB_CONTROL                           1
436#define _POSIX_MAPPED_FILES                     200809L
437/* #define _POSIX_MEMLOCK                           -1 */
438#define _POSIX_MEMLOCK_RANGE                    200809L
439#define _POSIX_MEMORY_PROTECTION                200809L
440#define _POSIX_MESSAGE_PASSING                  200809L
441#define _POSIX_MONOTONIC_CLOCK                  200809L
442#define _POSIX_NO_TRUNC                              1
443/* #define _POSIX_PRIORITIZED_IO                    -1 */
444#define _POSIX_PRIORITY_SCHEDULING              200809L
445#define _POSIX_RAW_SOCKETS                      200809L
446#define _POSIX_READER_WRITER_LOCKS              200809L
447#define _POSIX_REALTIME_SIGNALS                 200809L
448#define _POSIX_REGEXP                                1
449#define _POSIX_SAVED_IDS                             1
450#define _POSIX_SEMAPHORES                       200809L
451#define _POSIX_SHARED_MEMORY_OBJECTS            200809L
452#define _POSIX_SHELL                                 1
453#define _POSIX_SPAWN                            200809L
454#define _POSIX_SPIN_LOCKS                       200809L
455/* #define _POSIX_SPORADIC_SERVER                   -1 */
456#define _POSIX_SYNCHRONIZED_IO                  200809L
457#define _POSIX_THREAD_ATTR_STACKADDR            200809L
458#define _POSIX_THREAD_ATTR_STACKSIZE            200809L
459#define _POSIX_THREAD_CPUTIME                   200809L
460/* #define _POSIX_THREAD_PRIO_INHERIT               -1 */
461/* #define _POSIX_THREAD_PRIO_PROTECT               -1 */
462#define _POSIX_THREAD_PRIORITY_SCHEDULING       200809L
463#define _POSIX_THREAD_PROCESS_SHARED            200809L
464#define _POSIX_THREAD_SAFE_FUNCTIONS            200809L
465/* #define _POSIX_THREAD_SPORADIC_SERVER            -1 */
466#define _POSIX_THREADS                          200809L
467#define _POSIX_TIMEOUTS                         200809L
468#define _POSIX_TIMERS                           200809L
469/* #define _POSIX_TRACE                             -1 */
470/* #define _POSIX_TRACE_EVENT_FILTER                -1 */
471/* #define _POSIX_TRACE_INHERIT                     -1 */
472/* #define _POSIX_TRACE_LOG                         -1 */
473/* #define _POSIX_TYPED_MEMORY_OBJECTS              -1 */
474#define _POSIX_VDISABLE                            '\0'
475
476#if __POSIX_VISIBLE >= 2
477#define _POSIX2_C_VERSION                       _POSIX2_VERSION
478#define _POSIX2_C_BIND                          _POSIX2_VERSION
479#define _POSIX2_C_DEV                           _POSIX2_VERSION
480#define _POSIX2_CHAR_TERM                       _POSIX2_VERSION
481/* #define _POSIX2_FORT_DEV                         -1 */
482/* #define _POSIX2_FORT_RUN                         -1 */
483/* #define _POSIX2_LOCALEDEF                        -1 */
484/* #define _POSIX2_PBS                              -1 */
485/* #define _POSIX2_PBS_ACCOUNTING                   -1 */
486/* #define _POSIX2_PBS_CHECKPOINT                   -1 */
487/* #define _POSIX2_PBS_LOCATE                       -1 */
488/* #define _POSIX2_PBS_MESSAGE                      -1 */
489/* #define _POSIX2_PBS_TRACK                        -1 */
490#define _POSIX2_SW_DEV                          _POSIX2_VERSION
491#define _POSIX2_UPE                             _POSIX2_VERSION
492#endif /* __POSIX_VISIBLE >= 2 */
493
494#define _POSIX_V6_ILP32_OFF32                       -1
495#ifdef __LP64__
496#define _POSIX_V6_ILP32_OFFBIG                      -1
497#define _POSIX_V6_LP64_OFF64                         1
498#define _POSIX_V6_LPBIG_OFFBIG                       1
499#else
500#define _POSIX_V6_ILP32_OFFBIG                       1
501#define _POSIX_V6_LP64_OFF64                        -1
502#define _POSIX_V6_LPBIG_OFFBIG                      -1
503#endif
504#define _POSIX_V7_ILP32_OFF32                   _POSIX_V6_ILP32_OFF32
505#define _POSIX_V7_ILP32_OFFBIG                  _POSIX_V6_ILP32_OFFBIG
506#define _POSIX_V7_LP64_OFF64                    _POSIX_V6_LP64_OFF64
507#define _POSIX_V7_LPBIG_OFFBIG                  _POSIX_V6_LPBIG_OFFBIG
508#define _XBS5_ILP32_OFF32                       _POSIX_V6_ILP32_OFF32
509#define _XBS5_ILP32_OFFBIG                      _POSIX_V6_ILP32_OFFBIG
510#define _XBS5_LP64_OFF64                        _POSIX_V6_LP64_OFF64
511#define _XBS5_LPBIG_OFFBIG                      _POSIX_V6_LPBIG_OFFBIG
512
513#if __XSI_VISIBLE
514#define _XOPEN_CRYPT                                 1
515#define _XOPEN_ENH_I18N                              1
516/* #define _XOPEN_LEGACY                            -1 */
517/* #define _XOPEN_REALTIME                          -1 */
518/* #define _XOPEN_REALTIME_THREADS                  -1 */
519#define _XOPEN_SHM                                   1
520/* #define _XOPEN_STREAMS                           -1 */
521/* #define _XOPEN_UNIX                              -1 */
522#endif /* __XSI_VISIBLE */
523
524/* The value corresponds to UNICODE version 5.2, which is the current
525   state of newlib's wide char conversion functions. */
526#define __STDC_ISO_10646__ 200910L
527
528#endif /* __CYGWIN__ */
529
530#ifdef __cplusplus
531}
532#endif
533#endif /* _SYS_FEATURES_H */
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