/* * Written by Joel Sherrill . * * 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> /* 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 __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) && \ !defined(_LIBC) # 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 200809L #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 */ /* * newlib's wide char conversion functions were updated on * 2019-01-12 * to UNICODE version: * 11.0.0 released 2018-06-05 */ #define __STDC_ISO_10646__ 201806L #endif /* __CYGWIN__ */ #ifdef __cplusplus } #endif #endif /* _SYS_FEATURES_H */