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519 lines
15 KiB
C
519 lines
15 KiB
C
/*
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* Written by Joel Sherrill <joel@OARcorp.com>.
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*
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* COPYRIGHT (c) 1989-2014.
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*
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* On-Line Applications Research Corporation (OAR).
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose without fee is hereby granted, provided that this entire notice
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* is included in all copies of any software which is or includes a copy
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* or modification of this software.
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*
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* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTY. IN PARTICULAR, THE AUTHOR MAKES NO REPRESENTATION
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* OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS
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* SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
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*
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* $Id$
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*/
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#ifndef _SYS_FEATURES_H
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#define _SYS_FEATURES_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <_newlib_version.h>
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/* Macro to test version of GCC. Returns 0 for non-GCC or too old GCC. */
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#ifndef __GNUC_PREREQ
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# define __GNUC_PREREQ(maj, min) \
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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# else
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# define __GNUC_PREREQ(maj, min) 0
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# endif
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#endif /* __GNUC_PREREQ */
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/* Version with trailing underscores for BSD compatibility. */
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#define __GNUC_PREREQ__(ma, mi) __GNUC_PREREQ(ma, mi)
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/*
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* Feature test macros control which symbols are exposed by the system
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* headers. Any of these must be defined before including any headers.
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*
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* __STRICT_ANSI__ (defined by gcc -ansi, -std=c90, -std=c99, or -std=c11)
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* ISO C
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*
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* _POSIX_SOURCE (deprecated by _POSIX_C_SOURCE=1)
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* _POSIX_C_SOURCE >= 1
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* POSIX.1-1990
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*
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* _POSIX_C_SOURCE >= 2
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* POSIX.2-1992
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*
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* _POSIX_C_SOURCE >= 199309L
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* POSIX.1b-1993 Real-time extensions
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*
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* _POSIX_C_SOURCE >= 199506L
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* POSIX.1c-1995 Threads extensions
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*
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* _POSIX_C_SOURCE >= 200112L
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* POSIX.1-2001 and C99
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*
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* _POSIX_C_SOURCE >= 200809L
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* POSIX.1-2008
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*
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* _XOPEN_SOURCE
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* POSIX.1-1990 and XPG4
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*
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* _XOPEN_SOURCE_EXTENDED
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* SUSv1 (POSIX.2-1992 plus XPG4v2)
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*
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* _XOPEN_SOURCE >= 500
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* SUSv2 (POSIX.1c-1995 plus XSI)
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*
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* _XOPEN_SOURCE >= 600
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* SUSv3 (POSIX.1-2001 plus XSI) and C99
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*
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* _XOPEN_SOURCE >= 700
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* SUSv4 (POSIX.1-2008 plus XSI)
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*
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* _ISOC99_SOURCE or gcc -std=c99 or g++
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* ISO C99
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*
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* _ISOC11_SOURCE or gcc -std=c11 or g++ -std=c++11
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* ISO C11
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*
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* _ATFILE_SOURCE (implied by _POSIX_C_SOURCE >= 200809L)
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* "at" functions
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*
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* _LARGEFILE_SOURCE (deprecated by _XOPEN_SOURCE >= 500)
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* fseeko, ftello
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*
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* _GNU_SOURCE
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* All of the above plus GNU extensions
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*
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* _BSD_SOURCE (deprecated by _DEFAULT_SOURCE)
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* _SVID_SOURCE (deprecated by _DEFAULT_SOURCE)
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* _DEFAULT_SOURCE (or none of the above)
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* POSIX-1.2008 with BSD and SVr4 extensions
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*/
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#ifdef _GNU_SOURCE
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#undef _ATFILE_SOURCE
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#define _ATFILE_SOURCE 1
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#undef _DEFAULT_SOURCE
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#define _DEFAULT_SOURCE 1
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#undef _ISOC99_SOURCE
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#define _ISOC99_SOURCE 1
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#undef _ISOC11_SOURCE
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#define _ISOC11_SOURCE 1
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#undef _POSIX_SOURCE
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#define _POSIX_SOURCE 1
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#undef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 200809L
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#undef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 700
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#undef _XOPEN_SOURCE_EXTENDED
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#define _XOPEN_SOURCE_EXTENDED 1
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#endif /* _GNU_SOURCE */
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#if defined(_BSD_SOURCE) || defined(_SVID_SOURCE) || \
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(!defined(__STRICT_ANSI__) && !defined(_ANSI_SOURCE) && \
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!defined(_ISOC99_SOURCE) && !defined(_POSIX_SOURCE) && \
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!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE))
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#undef _DEFAULT_SOURCE
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#define _DEFAULT_SOURCE 1
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#endif
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#if defined(_DEFAULT_SOURCE)
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#undef _POSIX_SOURCE
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#define _POSIX_SOURCE 1
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#undef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 200809L
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#endif
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#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) && \
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((!defined(__STRICT_ANSI__) && !defined(_ANSI_SOURCE)) || \
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(_XOPEN_SOURCE - 0) >= 500)
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#define _POSIX_SOURCE 1
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#if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 700
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#define _POSIX_C_SOURCE 200809L
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#elif (_XOPEN_SOURCE - 0) >= 600
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#define _POSIX_C_SOURCE 200112L
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#elif (_XOPEN_SOURCE - 0) >= 500
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#define _POSIX_C_SOURCE 199506L
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#elif (_XOPEN_SOURCE - 0) < 500
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#define _POSIX_C_SOURCE 2
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#endif
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#endif
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#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200809
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#undef _ATFILE_SOURCE
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#define _ATFILE_SOURCE 1
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#endif
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/*
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* The following private macros are used throughout the headers to control
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* which symbols should be exposed. They are for internal use only, as
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* indicated by the leading double underscore, and must never be used outside
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* of these headers.
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*
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* __POSIX_VISIBLE
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* any version of POSIX.1; enabled by default, or with _POSIX_SOURCE,
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* any value of _POSIX_C_SOURCE, or _XOPEN_SOURCE >= 500.
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*
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* __POSIX_VISIBLE >= 2
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* POSIX.2-1992; enabled by default, with _POSIX_C_SOURCE >= 2,
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* or _XOPEN_SOURCE >= 500.
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*
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* __POSIX_VISIBLE >= 199309
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* POSIX.1b-1993; enabled by default, with _POSIX_C_SOURCE >= 199309L,
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* or _XOPEN_SOURCE >= 500.
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*
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* __POSIX_VISIBLE >= 199506
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* POSIX.1c-1995; enabled by default, with _POSIX_C_SOURCE >= 199506L,
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* or _XOPEN_SOURCE >= 500.
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*
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* __POSIX_VISIBLE >= 200112
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* POSIX.1-2001; enabled by default, with _POSIX_C_SOURCE >= 200112L,
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* or _XOPEN_SOURCE >= 600.
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*
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* __POSIX_VISIBLE >= 200809
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* POSIX.1-2008; enabled by default, with _POSIX_C_SOURCE >= 200809L,
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* or _XOPEN_SOURCE >= 700.
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*
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* __XSI_VISIBLE
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* XPG4 XSI extensions; enabled with any version of _XOPEN_SOURCE.
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*
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* __XSI_VISIBLE >= 4
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* SUSv1 XSI extensions; enabled with both _XOPEN_SOURCE and
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* _XOPEN_SOURCE_EXTENDED together.
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*
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* __XSI_VISIBLE >= 500
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* SUSv2 XSI extensions; enabled with _XOPEN_SOURCE >= 500.
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*
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* __XSI_VISIBLE >= 600
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* SUSv3 XSI extensions; enabled with _XOPEN_SOURCE >= 600.
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*
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* __XSI_VISIBLE >= 700
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* SUSv4 XSI extensions; enabled with _XOPEN_SOURCE >= 700.
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*
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* __ISO_C_VISIBLE >= 1999
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* ISO C99; enabled with gcc -std=c99 or newer (on by default since GCC 5),
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* any version of C++, or with _ISOC99_SOURCE, _POSIX_C_SOURCE >= 200112L,
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* or _XOPEN_SOURCE >= 600.
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*
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* __ISO_C_VISIBLE >= 2011
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* ISO C11; enabled with gcc -std=c11 or newer (on by default since GCC 5),
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* g++ -std=c++11 or newer (on by default since GCC 6), or with
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* _ISOC11_SOURCE.
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*
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* __ATFILE_VISIBLE
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* "at" functions; enabled by default, with _ATFILE_SOURCE,
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* _POSIX_C_SOURCE >= 200809L, or _XOPEN_SOURCE >= 700.
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*
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* __LARGEFILE_VISIBLE
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* fseeko, ftello; enabled with _LARGEFILE_SOURCE or _XOPEN_SOURCE >= 500.
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*
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* __BSD_VISIBLE
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* BSD extensions; enabled by default, or with _BSD_SOURCE.
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*
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* __SVID_VISIBLE
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* SVr4 extensions; enabled by default, or with _SVID_SOURCE.
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*
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* __MISC_VISIBLE
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* Extensions found in both BSD and SVr4 (shorthand for
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* (__BSD_VISIBLE || __SVID_VISIBLE)), or newlib-specific
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* extensions; enabled by default.
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*
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* __GNU_VISIBLE
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* GNU extensions; enabled with _GNU_SOURCE.
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*
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* In all cases above, "enabled by default" means either by defining
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* _DEFAULT_SOURCE, or by not defining any of the public feature test macros.
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* Defining _GNU_SOURCE makes all of the above avaliable.
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*/
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#ifdef _ATFILE_SOURCE
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#define __ATFILE_VISIBLE 1
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#else
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#define __ATFILE_VISIBLE 0
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#endif
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#ifdef _DEFAULT_SOURCE
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#define __BSD_VISIBLE 1
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#else
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#define __BSD_VISIBLE 0
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#endif
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#ifdef _GNU_SOURCE
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#define __GNU_VISIBLE 1
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#else
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#define __GNU_VISIBLE 0
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#endif
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#if defined(_ISOC11_SOURCE) || \
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(__STDC_VERSION__ - 0) >= 201112L || (__cplusplus - 0) >= 201103L
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#define __ISO_C_VISIBLE 2011
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#elif defined(_ISOC99_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200112L || \
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(__STDC_VERSION__ - 0) >= 199901L || defined(__cplusplus)
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#define __ISO_C_VISIBLE 1999
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#else
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#define __ISO_C_VISIBLE 1990
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#endif
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#if defined(_LARGEFILE_SOURCE) || (_XOPEN_SOURCE - 0) >= 500
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#define __LARGEFILE_VISIBLE 1
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#else
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#define __LARGEFILE_VISIBLE 0
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#endif
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#ifdef _DEFAULT_SOURCE
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#define __MISC_VISIBLE 1
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#else
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#define __MISC_VISIBLE 0
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#endif
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#if (_POSIX_C_SOURCE - 0) >= 200809L
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#define __POSIX_VISIBLE 200809
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#elif (_POSIX_C_SOURCE - 0) >= 200112L
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#define __POSIX_VISIBLE 200112
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#elif (_POSIX_C_SOURCE - 0) >= 199506L
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#define __POSIX_VISIBLE 199506
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#elif (_POSIX_C_SOURCE - 0) >= 199309L
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#define __POSIX_VISIBLE 199309
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#elif (_POSIX_C_SOURCE - 0) >= 2 || defined(_XOPEN_SOURCE)
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#define __POSIX_VISIBLE 199209
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#elif defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE)
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#define __POSIX_VISIBLE 199009
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#else
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#define __POSIX_VISIBLE 0
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#endif
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#ifdef _DEFAULT_SOURCE
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#define __SVID_VISIBLE 1
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#else
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#define __SVID_VISIBLE 0
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#endif
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#if (_XOPEN_SOURCE - 0) >= 700
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#define __XSI_VISIBLE 700
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#elif (_XOPEN_SOURCE - 0) >= 600
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#define __XSI_VISIBLE 600
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#elif (_XOPEN_SOURCE - 0) >= 500
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#define __XSI_VISIBLE 500
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#elif defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)
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#define __XSI_VISIBLE 4
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#elif defined(_XOPEN_SOURCE)
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#define __XSI_VISIBLE 1
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#else
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#define __XSI_VISIBLE 0
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#endif
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/* RTEMS adheres to POSIX -- 1003.1b with some features from annexes. */
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#ifdef __rtems__
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#define _POSIX_JOB_CONTROL 1
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#define _POSIX_SAVED_IDS 1
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#define _POSIX_VERSION 199309L
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#define _POSIX_ASYNCHRONOUS_IO 1
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#define _POSIX_FSYNC 1
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#define _POSIX_MAPPED_FILES 1
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#define _POSIX_MEMLOCK 1
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#define _POSIX_MEMLOCK_RANGE 1
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#define _POSIX_MEMORY_PROTECTION 1
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#define _POSIX_MESSAGE_PASSING 1
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#define _POSIX_MONOTONIC_CLOCK 200112L
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#define _POSIX_CLOCK_SELECTION 200112L
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#define _POSIX_PRIORITIZED_IO 1
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#define _POSIX_PRIORITY_SCHEDULING 1
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#define _POSIX_REALTIME_SIGNALS 1
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#define _POSIX_SEMAPHORES 1
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#define _POSIX_SHARED_MEMORY_OBJECTS 1
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#define _POSIX_SYNCHRONIZED_IO 1
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#define _POSIX_TIMERS 1
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#define _POSIX_BARRIERS 200112L
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#define _POSIX_READER_WRITER_LOCKS 200112L
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#define _POSIX_SPIN_LOCKS 200112L
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/* In P1003.1b but defined by drafts at least as early as P1003.1c/D10 */
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#define _POSIX_THREADS 1
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#define _POSIX_THREAD_ATTR_STACKADDR 1
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#define _POSIX_THREAD_ATTR_STACKSIZE 1
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#define _POSIX_THREAD_PRIORITY_SCHEDULING 1
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#define _POSIX_THREAD_PRIO_INHERIT 1
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#define _POSIX_THREAD_PRIO_PROTECT 1
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#define _POSIX_THREAD_PROCESS_SHARED 1
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#define _POSIX_THREAD_SAFE_FUNCTIONS 1
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/* P1003.4b/D8 defines the constants below this comment. */
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#define _POSIX_SPAWN 1
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#define _POSIX_TIMEOUTS 1
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#define _POSIX_CPUTIME 1
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#define _POSIX_THREAD_CPUTIME 1
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#define _POSIX_SPORADIC_SERVER 1
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#define _POSIX_THREAD_SPORADIC_SERVER 1
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#define _POSIX_DEVICE_CONTROL 1
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#define _POSIX_DEVCTL_DIRECTION 1
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#define _POSIX_INTERRUPT_CONTROL 1
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#define _POSIX_ADVISORY_INFO 1
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/* UNIX98 added some new pthread mutex attributes */
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#define _UNIX98_THREAD_MUTEX_ATTRIBUTES 1
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/* POSIX 1003.26-2003 defined device control method */
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#define _POSIX_26_VERSION 200312L
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#endif
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/* XMK loosely adheres to POSIX -- 1003.1 */
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#ifdef __XMK__
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#define _POSIX_THREADS 1
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#define _POSIX_THREAD_PRIORITY_SCHEDULING 1
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#endif
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#ifdef __svr4__
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# define _POSIX_JOB_CONTROL 1
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# define _POSIX_SAVED_IDS 1
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# define _POSIX_VERSION 199009L
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#endif
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#ifdef __CYGWIN__
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#if __POSIX_VISIBLE >= 200809
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#define _POSIX_VERSION 200809L
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#define _POSIX2_VERSION 200809L
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#elif __POSIX_VISIBLE >= 200112
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#define _POSIX_VERSION 200112L
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#define _POSIX2_VERSION 200112L
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#elif __POSIX_VISIBLE >= 199506
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#define _POSIX_VERSION 199506L
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#define _POSIX2_VERSION 199506L
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#elif __POSIX_VISIBLE >= 199309
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#define _POSIX_VERSION 199309L
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#define _POSIX2_VERSION 199209L
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#elif __POSIX_VISIBLE >= 199209
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#define _POSIX_VERSION 199009L
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#define _POSIX2_VERSION 199209L
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#elif __POSIX_VISIBLE
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#define _POSIX_VERSION 199009L
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#endif
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#if __XSI_VISIBLE >= 4
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#define _XOPEN_VERSION __XSI_VISIBLE
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#endif
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#define _POSIX_ADVISORY_INFO 200809L
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/* #define _POSIX_ASYNCHRONOUS_IO -1 */
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#define _POSIX_BARRIERS 200809L
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#define _POSIX_CHOWN_RESTRICTED 1
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#define _POSIX_CLOCK_SELECTION 200809L
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#define _POSIX_CPUTIME 200809L
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#define _POSIX_FSYNC 200809L
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#define _POSIX_IPV6 200809L
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#define _POSIX_JOB_CONTROL 1
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#define _POSIX_MAPPED_FILES 200809L
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/* #define _POSIX_MEMLOCK -1 */
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#define _POSIX_MEMLOCK_RANGE 200809L
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#define _POSIX_MEMORY_PROTECTION 200809L
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#define _POSIX_MESSAGE_PASSING 200809L
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#define _POSIX_MONOTONIC_CLOCK 200809L
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#define _POSIX_NO_TRUNC 1
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/* #define _POSIX_PRIORITIZED_IO -1 */
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#define _POSIX_PRIORITY_SCHEDULING 200809L
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#define _POSIX_RAW_SOCKETS 200809L
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#define _POSIX_READER_WRITER_LOCKS 200809L
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#define _POSIX_REALTIME_SIGNALS 200809L
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#define _POSIX_REGEXP 1
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#define _POSIX_SAVED_IDS 1
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#define _POSIX_SEMAPHORES 200809L
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#define _POSIX_SHARED_MEMORY_OBJECTS 200809L
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#define _POSIX_SHELL 1
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#define _POSIX_SPAWN 200809L
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#define _POSIX_SPIN_LOCKS 200809L
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/* #define _POSIX_SPORADIC_SERVER -1 */
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#define _POSIX_SYNCHRONIZED_IO 200809L
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#define _POSIX_THREAD_ATTR_STACKADDR 200809L
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#define _POSIX_THREAD_ATTR_STACKSIZE 200809L
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#define _POSIX_THREAD_CPUTIME 200809L
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/* #define _POSIX_THREAD_PRIO_INHERIT -1 */
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/* #define _POSIX_THREAD_PRIO_PROTECT -1 */
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#define _POSIX_THREAD_PRIORITY_SCHEDULING 200809L
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#define _POSIX_THREAD_PROCESS_SHARED 200809L
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#define _POSIX_THREAD_SAFE_FUNCTIONS 200809L
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/* #define _POSIX_THREAD_SPORADIC_SERVER -1 */
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#define _POSIX_THREADS 200809L
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/* #define _POSIX_TIMEOUTS -1 */
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#define _POSIX_TIMERS 200809L
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/* #define _POSIX_TRACE -1 */
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/* #define _POSIX_TRACE_EVENT_FILTER -1 */
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/* #define _POSIX_TRACE_INHERIT -1 */
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/* #define _POSIX_TRACE_LOG -1 */
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/* #define _POSIX_TYPED_MEMORY_OBJECTS -1 */
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#define _POSIX_VDISABLE '\0'
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#if __POSIX_VISIBLE >= 2
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#define _POSIX2_C_VERSION _POSIX2_VERSION
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#define _POSIX2_C_BIND _POSIX2_VERSION
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#define _POSIX2_C_DEV _POSIX2_VERSION
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#define _POSIX2_CHAR_TERM _POSIX2_VERSION
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/* #define _POSIX2_FORT_DEV -1 */
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/* #define _POSIX2_FORT_RUN -1 */
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/* #define _POSIX2_LOCALEDEF -1 */
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/* #define _POSIX2_PBS -1 */
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/* #define _POSIX2_PBS_ACCOUNTING -1 */
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/* #define _POSIX2_PBS_CHECKPOINT -1 */
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/* #define _POSIX2_PBS_LOCATE -1 */
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/* #define _POSIX2_PBS_MESSAGE -1 */
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/* #define _POSIX2_PBS_TRACK -1 */
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#define _POSIX2_SW_DEV _POSIX2_VERSION
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#define _POSIX2_UPE _POSIX2_VERSION
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#endif /* __POSIX_VISIBLE >= 2 */
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#define _POSIX_V6_ILP32_OFF32 -1
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#ifdef __LP64__
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#define _POSIX_V6_ILP32_OFFBIG -1
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#define _POSIX_V6_LP64_OFF64 1
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#define _POSIX_V6_LPBIG_OFFBIG 1
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#else
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#define _POSIX_V6_ILP32_OFFBIG 1
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#define _POSIX_V6_LP64_OFF64 -1
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#define _POSIX_V6_LPBIG_OFFBIG -1
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#endif
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#define _POSIX_V7_ILP32_OFF32 _POSIX_V6_ILP32_OFF32
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#define _POSIX_V7_ILP32_OFFBIG _POSIX_V6_ILP32_OFFBIG
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#define _POSIX_V7_LP64_OFF64 _POSIX_V6_LP64_OFF64
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#define _POSIX_V7_LPBIG_OFFBIG _POSIX_V6_LPBIG_OFFBIG
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#define _XBS5_ILP32_OFF32 _POSIX_V6_ILP32_OFF32
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#define _XBS5_ILP32_OFFBIG _POSIX_V6_ILP32_OFFBIG
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#define _XBS5_LP64_OFF64 _POSIX_V6_LP64_OFF64
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#define _XBS5_LPBIG_OFFBIG _POSIX_V6_LPBIG_OFFBIG
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#if __XSI_VISIBLE
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#define _XOPEN_CRYPT 1
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#define _XOPEN_ENH_I18N 1
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/* #define _XOPEN_LEGACY -1 */
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/* #define _XOPEN_REALTIME -1 */
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/* #define _XOPEN_REALTIME_THREADS -1 */
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#define _XOPEN_SHM 1
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/* #define _XOPEN_STREAMS -1 */
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/* #define _XOPEN_UNIX -1 */
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#endif /* __XSI_VISIBLE */
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/* The value corresponds to UNICODE version 4.0, which is the version
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supported by XP. Newlib supports 5.2 (2011) but so far Cygwin needs
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the MS conversions for double-byte charsets. */
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#define __STDC_ISO_10646__ 200305L
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#endif /* __CYGWIN__ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FEATURES_H */
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