/*
 *  Written by Joel Sherrill <joel@OARcorp.com>.
 *
 *  COPYRIGHT (c) 1989-2014.
 *
 *  On-Line Applications Research Corporation (OAR).
 *
 *  Permission to use, copy, modify, and distribute this software for any
 *  purpose without fee is hereby granted, provided that this entire notice
 *  is included in all copies of any software which is or includes a copy
 *  or modification of this software.
 *
 *  THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
 *  WARRANTY.  IN PARTICULAR,  THE AUTHOR MAKES NO REPRESENTATION
 *  OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS
 *  SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
 *
 *  $Id$
 */

#ifndef _SYS_FEATURES_H
#define _SYS_FEATURES_H

#ifdef __cplusplus
extern "C"
{
#endif

#include <_newlib_version.h>

#include <bits/posix_opt.h>

/* Macro to test version of GCC.  Returns 0 for non-GCC or too old GCC. */
#ifndef __GNUC_PREREQ
#if defined __GNUC__ && defined __GNUC_MINOR__
#define __GNUC_PREREQ(maj, min) \
    ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
#define __GNUC_PREREQ(maj, min) 0
#endif
#endif /* __GNUC_PREREQ */
/* Version with trailing underscores for BSD compatibility. */
#define __GNUC_PREREQ__(ma, mi) __GNUC_PREREQ(ma, mi)

    /*
     * Feature test macros control which symbols are exposed by the system
     * headers.  Any of these must be defined before including any headers.
     *
     * __STRICT_ANSI__ (defined by gcc -ansi, -std=c90, -std=c99, or -std=c11)
     *	ISO C
     *
     * _POSIX_SOURCE (deprecated by _POSIX_C_SOURCE=1)
     * _POSIX_C_SOURCE >= 1
     *  POSIX.1-1990
     *
     * _POSIX_C_SOURCE >= 2
     *  POSIX.2-1992
     *
     * _POSIX_C_SOURCE >= 199309L
     *  POSIX.1b-1993 Real-time extensions
     *
     * _POSIX_C_SOURCE >= 199506L
     *  POSIX.1c-1995 Threads extensions
     *
     * _POSIX_C_SOURCE >= 200112L
     *  POSIX.1-2001 and C99
     *
     * _POSIX_C_SOURCE >= 200809L
     *  POSIX.1-2008
     *
     * _XOPEN_SOURCE
     *	POSIX.1-1990 and XPG4
     *
     * _XOPEN_SOURCE_EXTENDED
     *	SUSv1 (POSIX.2-1992 plus XPG4v2)
     *
     * _XOPEN_SOURCE >= 500
     *	SUSv2 (POSIX.1c-1995 plus XSI)
     *
     * _XOPEN_SOURCE >= 600
     *	SUSv3 (POSIX.1-2001 plus XSI) and C99
     *
     * _XOPEN_SOURCE >= 700
     *	SUSv4 (POSIX.1-2008 plus XSI)
     *
     * _ISOC99_SOURCE or gcc -std=c99 or g++
     *  ISO C99
     *
     * _ISOC11_SOURCE or gcc -std=c11 or g++ -std=c++11
     *  ISO C11
     *
     * _ATFILE_SOURCE (implied by _POSIX_C_SOURCE >= 200809L)
     *	"at" functions
     *
     * _LARGEFILE_SOURCE (deprecated by _XOPEN_SOURCE >= 500)
     *	fseeko, ftello
     *
     * _GNU_SOURCE
     *  All of the above plus GNU extensions
     *
     * _BSD_SOURCE (deprecated by _DEFAULT_SOURCE)
     * _SVID_SOURCE (deprecated by _DEFAULT_SOURCE)
     * _DEFAULT_SOURCE (or none of the above)
     *  POSIX-1.2008 with BSD and SVr4 extensions
     *
     * _FORTIFY_SOURCE = 1 or 2
     *  Object Size Checking function wrappers
     */

#ifdef _GNU_SOURCE
#undef _ATFILE_SOURCE
#define _ATFILE_SOURCE 1
#undef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE 1
#undef _ISOC99_SOURCE
#define _ISOC99_SOURCE 1
#undef _ISOC11_SOURCE
#define _ISOC11_SOURCE 1
#undef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#undef _XOPEN_SOURCE
#define _XOPEN_SOURCE 700
#undef _XOPEN_SOURCE_EXTENDED
#define _XOPEN_SOURCE_EXTENDED 1
#endif /* _GNU_SOURCE */

#if defined(_BSD_SOURCE) || defined(_SVID_SOURCE) ||        \
    (!defined(__STRICT_ANSI__) && !defined(_ANSI_SOURCE) && \
     !defined(_ISOC99_SOURCE) && !defined(_POSIX_SOURCE) && \
     !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE))
#undef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE 1
#endif

#if defined(_DEFAULT_SOURCE)
#undef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#endif

#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) &&   \
    ((!defined(__STRICT_ANSI__) && !defined(_ANSI_SOURCE)) || \
     (_XOPEN_SOURCE - 0) >= 500)
#define _POSIX_SOURCE 1
#if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 700
#define _POSIX_C_SOURCE 200809L
#elif (_XOPEN_SOURCE - 0) >= 600
#define _POSIX_C_SOURCE 200112L
#elif (_XOPEN_SOURCE - 0) >= 500
#define _POSIX_C_SOURCE 199506L
#elif (_XOPEN_SOURCE - 0) < 500
#define _POSIX_C_SOURCE 2
#endif
#endif

#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200809
#undef _ATFILE_SOURCE
#define _ATFILE_SOURCE 1
#endif

    /*
     * The following private macros are used throughout the headers to control
     * which symbols should be exposed.  They are for internal use only, as
     * indicated by the leading double underscore, and must never be used
     *outside of these headers.
     *
     * __POSIX_VISIBLE
     *  any version of POSIX.1; enabled by default, or with _POSIX_SOURCE,
     *  any value of _POSIX_C_SOURCE, or _XOPEN_SOURCE >= 500.
     *
     * __POSIX_VISIBLE >= 2
     *  POSIX.2-1992; enabled by default, with _POSIX_C_SOURCE >= 2,
     *  or _XOPEN_SOURCE >= 500.
     *
     * __POSIX_VISIBLE >= 199309
     *  POSIX.1b-1993; enabled by default, with _POSIX_C_SOURCE >= 199309L,
     *  or _XOPEN_SOURCE >= 500.
     *
     * __POSIX_VISIBLE >= 199506
     *  POSIX.1c-1995; enabled by default, with _POSIX_C_SOURCE >= 199506L,
     *  or _XOPEN_SOURCE >= 500.
     *
     * __POSIX_VISIBLE >= 200112
     *  POSIX.1-2001; enabled by default, with _POSIX_C_SOURCE >= 200112L,
     *  or _XOPEN_SOURCE >= 600.
     *
     * __POSIX_VISIBLE >= 200809
     *  POSIX.1-2008; enabled by default, with _POSIX_C_SOURCE >= 200809L,
     *  or _XOPEN_SOURCE >= 700.
     *
     * __XSI_VISIBLE
     *	XPG4 XSI extensions; enabled with any version of _XOPEN_SOURCE.
     *
     * __XSI_VISIBLE >= 4
     *	SUSv1 XSI extensions; enabled with both _XOPEN_SOURCE and
     *  _XOPEN_SOURCE_EXTENDED together.
     *
     * __XSI_VISIBLE >= 500
     *	SUSv2 XSI extensions; enabled with _XOPEN_SOURCE >= 500.
     *
     * __XSI_VISIBLE >= 600
     *	SUSv3 XSI extensions; enabled with _XOPEN_SOURCE >= 600.
     *
     * __XSI_VISIBLE >= 700
     *	SUSv4 XSI extensions; enabled with _XOPEN_SOURCE >= 700.
     *
     * __ISO_C_VISIBLE >= 1999
     *  ISO C99; enabled with gcc -std=c99 or newer (on by default since GCC 5),
     *  any version of C++, or with _ISOC99_SOURCE, _POSIX_C_SOURCE >= 200112L,
     *  or _XOPEN_SOURCE >= 600.
     *
     * __ISO_C_VISIBLE >= 2011
     *  ISO C11; enabled with gcc -std=c11 or newer (on by default since GCC 5),
     *  g++ -std=c++11 or newer (on by default since GCC 6), or with
     *  _ISOC11_SOURCE.
     *
     * __ATFILE_VISIBLE
     *	"at" functions; enabled by default, with _ATFILE_SOURCE,
     *  _POSIX_C_SOURCE >= 200809L, or _XOPEN_SOURCE >= 700.
     *
     * __LARGEFILE_VISIBLE
     *	fseeko, ftello; enabled with _LARGEFILE_SOURCE or _XOPEN_SOURCE >= 500.
     *
     * __BSD_VISIBLE
     *  BSD extensions; enabled by default, or with _BSD_SOURCE.
     *
     * __SVID_VISIBLE
     *  SVr4 extensions; enabled by default, or with _SVID_SOURCE.
     *
     * __MISC_VISIBLE
     *  Extensions found in both BSD and SVr4 (shorthand for
     *  (__BSD_VISIBLE || __SVID_VISIBLE)), or newlib-specific
     *  extensions; enabled by default.
     *
     * __GNU_VISIBLE
     *  GNU extensions; enabled with _GNU_SOURCE.
     *
     * __SSP_FORTIFY_LEVEL
     *  Object Size Checking; defined to 0 (off), 1, or 2.
     *
     * In all cases above, "enabled by default" means either by defining
     * _DEFAULT_SOURCE, or by not defining any of the public feature test
     *macros.
     */

#ifdef _ATFILE_SOURCE
#define __ATFILE_VISIBLE 1
#else
#define __ATFILE_VISIBLE 0
#endif

#ifdef _DEFAULT_SOURCE
#define __BSD_VISIBLE 1
#else
#define __BSD_VISIBLE 0
#endif

#ifdef _GNU_SOURCE
#define __USE_GNU     1
#define __GNU_VISIBLE 1
#else
#define __GNU_VISIBLE 0
#endif

#if defined(_ISOC11_SOURCE) || (__STDC_VERSION__ - 0) >= 201112L || \
    (__cplusplus - 0) >= 201103L
#define __ISO_C_VISIBLE 2011
#elif defined(_ISOC99_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200112L || \
    (__STDC_VERSION__ - 0) >= 199901L || defined(__cplusplus)
#define __ISO_C_VISIBLE 1999
#else
#define __ISO_C_VISIBLE 1990
#endif

#if defined(_LARGEFILE_SOURCE) || (_XOPEN_SOURCE - 0) >= 500
#define __LARGEFILE_VISIBLE 1
#else
#define __LARGEFILE_VISIBLE 0
#endif

#ifdef _DEFAULT_SOURCE
#define __MISC_VISIBLE 1
#else
#define __MISC_VISIBLE 0
#endif

#if (_POSIX_C_SOURCE - 0) >= 200809L
#define __POSIX_VISIBLE 200809
#elif (_POSIX_C_SOURCE - 0) >= 200112L
#define __POSIX_VISIBLE 200112
#elif (_POSIX_C_SOURCE - 0) >= 199506L
#define __POSIX_VISIBLE 199506
#elif (_POSIX_C_SOURCE - 0) >= 199309L
#define __POSIX_VISIBLE 199309
#elif (_POSIX_C_SOURCE - 0) >= 2 || defined(_XOPEN_SOURCE)
#define __POSIX_VISIBLE 199209
#elif defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE)
#define __POSIX_VISIBLE 199009
#else
#define __POSIX_VISIBLE 0
#endif

#ifdef _DEFAULT_SOURCE
#define __SVID_VISIBLE 1
#else
#define __SVID_VISIBLE 0
#endif

#if (_XOPEN_SOURCE - 0) >= 700
#define __XSI_VISIBLE 700
#elif (_XOPEN_SOURCE - 0) >= 600
#define __XSI_VISIBLE 600
#elif (_XOPEN_SOURCE - 0) >= 500
#define __XSI_VISIBLE 500
#elif defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)
#define __XSI_VISIBLE 4
#elif defined(_XOPEN_SOURCE)
#define __XSI_VISIBLE 1
#else
#define __XSI_VISIBLE 0
#endif

#if _FORTIFY_SOURCE > 0 && !defined(__cplusplus) && !defined(__lint__) && \
    (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4, 1)
#if _FORTIFY_SOURCE > 1
#define __SSP_FORTIFY_LEVEL 2
#else
#define __SSP_FORTIFY_LEVEL 1
#endif
#else
#define __SSP_FORTIFY_LEVEL 0
#endif

    /* RTEMS adheres to POSIX -- 1003.1b with some features from annexes.  */

#ifdef __rtems__
#define _POSIX_JOB_CONTROL           1
#define _POSIX_SAVED_IDS             1
#define _POSIX_VERSION               199309L
#define _POSIX_ASYNCHRONOUS_IO       1
#define _POSIX_FSYNC                 1
#define _POSIX_MAPPED_FILES          1
#define _POSIX_MEMLOCK               1
#define _POSIX_MEMLOCK_RANGE         1
#define _POSIX_MEMORY_PROTECTION     1
#define _POSIX_MESSAGE_PASSING       1
#define _POSIX_MONOTONIC_CLOCK       200112L
#define _POSIX_CLOCK_SELECTION       200112L
#define _POSIX_PRIORITIZED_IO        1
#define _POSIX_PRIORITY_SCHEDULING   1
#define _POSIX_REALTIME_SIGNALS      1
#define _POSIX_SEMAPHORES            1
#define _POSIX_SHARED_MEMORY_OBJECTS 1
#define _POSIX_SYNCHRONIZED_IO       1
#define _POSIX_TIMERS                1
#define _POSIX_BARRIERS              200112L
#define _POSIX_READER_WRITER_LOCKS   200112L
#define _POSIX_SPIN_LOCKS            200112L

/* In P1003.1b but defined by drafts at least as early as P1003.1c/D10  */
#define _POSIX_THREADS                    1
#define _POSIX_THREAD_ATTR_STACKADDR      1
#define _POSIX_THREAD_ATTR_STACKSIZE      1
#define _POSIX_THREAD_PRIORITY_SCHEDULING 1
#define _POSIX_THREAD_PRIO_INHERIT        1
#define _POSIX_THREAD_PRIO_PROTECT        1
#define _POSIX_THREAD_PROCESS_SHARED      1
#define _POSIX_THREAD_SAFE_FUNCTIONS      1

/* P1003.4b/D8 defines the constants below this comment. */
#define _POSIX_SPAWN                  1
#define _POSIX_TIMEOUTS               1
#define _POSIX_CPUTIME                1
#define _POSIX_THREAD_CPUTIME         1
#define _POSIX_SPORADIC_SERVER        1
#define _POSIX_THREAD_SPORADIC_SERVER 1
#define _POSIX_DEVICE_CONTROL         1
#define _POSIX_DEVCTL_DIRECTION       1
#define _POSIX_INTERRUPT_CONTROL      1
#define _POSIX_ADVISORY_INFO          1

/* UNIX98 added some new pthread mutex attributes */
#define _UNIX98_THREAD_MUTEX_ATTRIBUTES 1

/* POSIX 1003.26-2003 defined device control method */
#define _POSIX_26_VERSION 200312L

#endif

/* XMK loosely adheres to POSIX -- 1003.1 */
#ifdef __XMK__
#define _POSIX_THREADS                    1
#define _POSIX_THREAD_PRIORITY_SCHEDULING 1
#endif

#ifdef __svr4__
#define _POSIX_JOB_CONTROL 1
#define _POSIX_SAVED_IDS   1
#define _POSIX_VERSION     199009L
#endif

#ifdef __CYGWIN__

#if __POSIX_VISIBLE >= 200809
#define _POSIX_VERSION  200809L
#define _POSIX2_VERSION 200809L
#elif __POSIX_VISIBLE >= 200112
#define _POSIX_VERSION  200112L
#define _POSIX2_VERSION 200112L
#elif __POSIX_VISIBLE >= 199506
#define _POSIX_VERSION  199506L
#define _POSIX2_VERSION 199506L
#elif __POSIX_VISIBLE >= 199309
#define _POSIX_VERSION  199309L
#define _POSIX2_VERSION 199209L
#elif __POSIX_VISIBLE >= 199209
#define _POSIX_VERSION  199009L
#define _POSIX2_VERSION 199209L
#elif __POSIX_VISIBLE
#define _POSIX_VERSION 199009L
#endif
#if __XSI_VISIBLE >= 4
#define _XOPEN_VERSION __XSI_VISIBLE
#endif

#define _POSIX_ADVISORY_INFO 200809L
/* #define _POSIX_ASYNCHRONOUS_IO           -1 */
#define _POSIX_BARRIERS         200809L
#define _POSIX_CHOWN_RESTRICTED 1
#define _POSIX_CLOCK_SELECTION  200809L
#define _POSIX_CPUTIME          200809L
#define _POSIX_FSYNC            200809L
#define _POSIX_IPV6             200809L
#define _POSIX_JOB_CONTROL      1
#define _POSIX_MAPPED_FILES     200809L
/* #define _POSIX_MEMLOCK               -1 */
#define _POSIX_MEMLOCK_RANGE     200809L
#define _POSIX_MEMORY_PROTECTION 200809L
#define _POSIX_MESSAGE_PASSING   200809L
#define _POSIX_MONOTONIC_CLOCK   200809L
#define _POSIX_NO_TRUNC          1
/* #define _POSIX_PRIORITIZED_IO            -1 */
#define _POSIX_PRIORITY_SCHEDULING   200809L
#define _POSIX_RAW_SOCKETS           200809L
#define _POSIX_READER_WRITER_LOCKS   200809L
#define _POSIX_REALTIME_SIGNALS      200809L
#define _POSIX_REGEXP                1
#define _POSIX_SAVED_IDS             1
#define _POSIX_SEMAPHORES            200809L
#define _POSIX_SHARED_MEMORY_OBJECTS 200809L
#define _POSIX_SHELL                 1
#define _POSIX_SPAWN                 200809L
#define _POSIX_SPIN_LOCKS            200809L
/* #define _POSIX_SPORADIC_SERVER           -1 */
#define _POSIX_SYNCHRONIZED_IO       200809L
#define _POSIX_THREAD_ATTR_STACKADDR 200809L
#define _POSIX_THREAD_ATTR_STACKSIZE 200809L
#define _POSIX_THREAD_CPUTIME        200809L
/* #define _POSIX_THREAD_PRIO_INHERIT           -1 */
/* #define _POSIX_THREAD_PRIO_PROTECT           -1 */
#define _POSIX_THREAD_PRIORITY_SCHEDULING 200809L
#define _POSIX_THREAD_PROCESS_SHARED      200809L
#define _POSIX_THREAD_SAFE_FUNCTIONS      200809L
/* #define _POSIX_THREAD_SPORADIC_SERVER        -1 */
#define _POSIX_THREADS  200809L
#define _POSIX_TIMEOUTS 200809L
#define _POSIX_TIMERS   200809L
/* #define _POSIX_TRACE                 -1 */
/* #define _POSIX_TRACE_EVENT_FILTER            -1 */
/* #define _POSIX_TRACE_INHERIT             -1 */
/* #define _POSIX_TRACE_LOG             -1 */
/* #define _POSIX_TYPED_MEMORY_OBJECTS          -1 */
#define _POSIX_VDISABLE '\0'

#if __POSIX_VISIBLE >= 2
#define _POSIX2_C_VERSION _POSIX2_VERSION
#define _POSIX2_C_BIND    _POSIX2_VERSION
#define _POSIX2_C_DEV     _POSIX2_VERSION
#define _POSIX2_CHAR_TERM _POSIX2_VERSION
/* #define _POSIX2_FORT_DEV             -1 */
/* #define _POSIX2_FORT_RUN             -1 */
/* #define _POSIX2_LOCALEDEF                -1 */
/* #define _POSIX2_PBS                  -1 */
/* #define _POSIX2_PBS_ACCOUNTING           -1 */
/* #define _POSIX2_PBS_CHECKPOINT           -1 */
/* #define _POSIX2_PBS_LOCATE               -1 */
/* #define _POSIX2_PBS_MESSAGE              -1 */
/* #define _POSIX2_PBS_TRACK                -1 */
#define _POSIX2_SW_DEV _POSIX2_VERSION
#define _POSIX2_UPE    _POSIX2_VERSION
#endif /* __POSIX_VISIBLE >= 2 */

#define _POSIX_V6_ILP32_OFF32 -1
#ifdef __LP64__
#define _POSIX_V6_ILP32_OFFBIG -1
#define _POSIX_V6_LP64_OFF64   1
#define _POSIX_V6_LPBIG_OFFBIG 1
#else
#define _POSIX_V6_ILP32_OFFBIG 1
#define _POSIX_V6_LP64_OFF64   -1
#define _POSIX_V6_LPBIG_OFFBIG -1
#endif
#define _POSIX_V7_ILP32_OFF32  _POSIX_V6_ILP32_OFF32
#define _POSIX_V7_ILP32_OFFBIG _POSIX_V6_ILP32_OFFBIG
#define _POSIX_V7_LP64_OFF64   _POSIX_V6_LP64_OFF64
#define _POSIX_V7_LPBIG_OFFBIG _POSIX_V6_LPBIG_OFFBIG
#define _XBS5_ILP32_OFF32      _POSIX_V6_ILP32_OFF32
#define _XBS5_ILP32_OFFBIG     _POSIX_V6_ILP32_OFFBIG
#define _XBS5_LP64_OFF64       _POSIX_V6_LP64_OFF64
#define _XBS5_LPBIG_OFFBIG     _POSIX_V6_LPBIG_OFFBIG

#if __XSI_VISIBLE
#define _XOPEN_CRYPT    1
#define _XOPEN_ENH_I18N 1
/* #define _XOPEN_LEGACY                -1 */
/* #define _XOPEN_REALTIME              -1 */
/* #define _XOPEN_REALTIME_THREADS          -1 */
#define _XOPEN_SHM 1
/* #define _XOPEN_STREAMS               -1 */
/* #define _XOPEN_UNIX                  -1 */
#endif /* __XSI_VISIBLE */

/* The value corresponds to UNICODE version 5.2, which is the current
   state of newlib's wide char conversion functions. */
#define __STDC_ISO_10646__ 200910L

#endif /* __CYGWIN__ */

#ifdef __cplusplus
}
#endif
#endif /* _SYS_FEATURES_H */
