+++ /dev/null
-/* Copyright (C) 1991-1993,1995-2003,2004,2005 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef _FEATURES_H
-#define _FEATURES_H 1
-
-/* These are defined by the user (or the compiler)
- to specify the desired environment:
-
- __STRICT_ANSI__ ISO Standard C.
- _ISOC99_SOURCE Extensions to ISO C89 from ISO C99.
- _POSIX_SOURCE IEEE Std 1003.1.
- _POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
- if >=199309L, add IEEE Std 1003.1b-1993;
- if >=199506L, add IEEE Std 1003.1c-1995;
- if >=200112L, all of IEEE 1003.1-2004
- _XOPEN_SOURCE Includes POSIX and XPG things. Set to 500 if
- Single Unix conformance is wanted, to 600 for the
- upcoming sixth revision.
- _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
- _LARGEFILE_SOURCE Some more functions for correct standard I/O.
- _LARGEFILE64_SOURCE Additional functionality from LFS for large files.
- _FILE_OFFSET_BITS=N Select default filesystem interface.
- _BSD_SOURCE ISO C, POSIX, and 4.3BSD things.
- _SVID_SOURCE ISO C, POSIX, and SVID things.
- _GNU_SOURCE All of the above, plus GNU extensions.
- _REENTRANT Select additionally reentrant object.
- _THREAD_SAFE Same as _REENTRANT, often used by other systems.
- _FORTIFY_SOURCE If set to numeric value > 0 additional security
- measures are defined, according to level.
-
- The `-ansi' switch to the GNU C compiler defines __STRICT_ANSI__.
- If none of these are defined, the default is to have _SVID_SOURCE,
- _BSD_SOURCE, and _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
- 199506L. If more than one of these are defined, they accumulate.
- For example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE
- together give you ISO C, 1003.1, and 1003.2, but nothing else.
-
- These are defined by this file and are used by the
- header files to decide what to declare or define:
-
- __USE_ISOC99 Define ISO C99 things.
- __USE_POSIX Define IEEE Std 1003.1 things.
- __USE_POSIX2 Define IEEE Std 1003.2 things.
- __USE_POSIX199309 Define IEEE Std 1003.1, and .1b things.
- __USE_POSIX199506 Define IEEE Std 1003.1, .1b, .1c and .1i things.
- __USE_XOPEN Define XPG things.
- __USE_XOPEN_EXTENDED Define X/Open Unix things.
- __USE_UNIX98 Define Single Unix V2 things.
- __USE_XOPEN2K Define XPG6 things.
- __USE_LARGEFILE Define correct standard I/O things.
- __USE_LARGEFILE64 Define LFS things with separate names.
- __USE_FILE_OFFSET64 Define 64bit interface as default.
- __USE_BSD Define 4.3BSD things.
- __USE_SVID Define SVID things.
- __USE_MISC Define things common to BSD and System V Unix.
- __USE_GNU Define GNU extensions.
- __USE_REENTRANT Define reentrant/thread-safe *_r functions.
- __USE_FORTIFY_LEVEL Additional security measures used, according to level.
- __FAVOR_BSD Favor 4.3BSD things in cases of conflict.
-
- The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
- defined by this file unconditionally. `__GNU_LIBRARY__' is provided
- only for compatibility. All new code should use the other symbols
- to test for features.
-
- All macros listed above as possibly being defined by this file are
- explicitly undefined if they are not explicitly defined.
- Feature-test macros that are not defined by the user or compiler
- but are implied by the other feature-test macros defined (or by the
- lack of any definitions) are defined by the file. */
-
-
-/* Undefine everything, so we get a clean slate. */
-#undef __USE_ISOC99
-#undef __USE_POSIX
-#undef __USE_POSIX2
-#undef __USE_POSIX199309
-#undef __USE_POSIX199506
-#undef __USE_XOPEN
-#undef __USE_XOPEN_EXTENDED
-#undef __USE_UNIX98
-#undef __USE_XOPEN2K
-#undef __USE_LARGEFILE
-#undef __USE_LARGEFILE64
-#undef __USE_FILE_OFFSET64
-#undef __USE_BSD
-#undef __USE_SVID
-#undef __USE_MISC
-#undef __USE_GNU
-#undef __USE_REENTRANT
-#undef __USE_FORTIFY_LEVEL
-#undef __FAVOR_BSD
-#undef __KERNEL_STRICT_NAMES
-
-/* Suppress kernel-name space pollution unless user expressedly asks
- for it. */
-#ifndef _LOOSE_KERNEL_NAMES
-# define __KERNEL_STRICT_NAMES
-#endif
-
-/* Always use ISO C things. */
-#define __USE_ANSI 1
-
-/* Convenience macros to test the versions of glibc and gcc.
- Use them like this:
- #if __GNUC_PREREQ (2,8)
- ... code requiring gcc 2.8 or later ...
- #endif
- Note - they won't work for gcc1 or glibc1, since the _MINOR macros
- were not defined then. */
-#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
-
-
-/* If _BSD_SOURCE was defined by the user, favor BSD over POSIX. */
-#if defined _BSD_SOURCE && \
- !(defined _POSIX_SOURCE || defined _POSIX_C_SOURCE || \
- defined _XOPEN_SOURCE || defined _XOPEN_SOURCE_EXTENDED || \
- defined _GNU_SOURCE || defined _SVID_SOURCE)
-# define __FAVOR_BSD 1
-#endif
-
-/* If _GNU_SOURCE was defined by the user, turn on all the other features. */
-#ifdef _GNU_SOURCE
-# undef _ISOC99_SOURCE
-# define _ISOC99_SOURCE 1
-# undef _POSIX_SOURCE
-# define _POSIX_SOURCE 1
-# undef _POSIX_C_SOURCE
-# define _POSIX_C_SOURCE 199506L
-# undef _XOPEN_SOURCE
-# define _XOPEN_SOURCE 600
-# undef _XOPEN_SOURCE_EXTENDED
-# define _XOPEN_SOURCE_EXTENDED 1
-# undef _LARGEFILE64_SOURCE
-# define _LARGEFILE64_SOURCE 1
-# undef _BSD_SOURCE
-# define _BSD_SOURCE 1
-# undef _SVID_SOURCE
-# define _SVID_SOURCE 1
-#endif
-
-/* If nothing (other than _GNU_SOURCE) is defined,
- define _BSD_SOURCE and _SVID_SOURCE. */
-#if (!defined __STRICT_ANSI__ && !defined _ISOC99_SOURCE && \
- !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE && \
- !defined _XOPEN_SOURCE && !defined _XOPEN_SOURCE_EXTENDED && \
- !defined _BSD_SOURCE && !defined _SVID_SOURCE)
-# define _BSD_SOURCE 1
-# define _SVID_SOURCE 1
-#endif
-
-/* This is to enable the ISO C99 extension. Also recognize the old macro
- which was used prior to the standard acceptance. This macro will
- eventually go away and the features enabled by default once the ISO C99
- standard is widely adopted. */
-#if (defined _ISOC99_SOURCE || defined _ISOC9X_SOURCE \
- || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
-# define __USE_ISOC99 1
-#endif
-
-/* If none of the ANSI/POSIX macros are defined, use POSIX.1 and POSIX.2
- (and IEEE Std 1003.1b-1993 unless _XOPEN_SOURCE is defined). */
-#if ((!defined __STRICT_ANSI__ || (_XOPEN_SOURCE - 0) >= 500) && \
- !defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE)
-# define _POSIX_SOURCE 1
-# if defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 500
-# define _POSIX_C_SOURCE 2
-# else
-# define _POSIX_C_SOURCE 199506L
-# endif
-#endif
-
-#if defined _POSIX_SOURCE || _POSIX_C_SOURCE >= 1 || defined _XOPEN_SOURCE
-# define __USE_POSIX 1
-#endif
-
-#if defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 2 || defined _XOPEN_SOURCE
-# define __USE_POSIX2 1
-#endif
-
-#if (_POSIX_C_SOURCE - 0) >= 199309L
-# define __USE_POSIX199309 1
-#endif
-
-#if (_POSIX_C_SOURCE - 0) >= 199506L
-# define __USE_POSIX199506 1
-#endif
-
-#if (_POSIX_C_SOURCE - 0) >= 200112L
-# define __USE_XOPEN2K 1
-#endif
-
-#ifdef _XOPEN_SOURCE
-# define __USE_XOPEN 1
-# if (_XOPEN_SOURCE - 0) >= 500
-# define __USE_XOPEN_EXTENDED 1
-# define __USE_UNIX98 1
-# undef _LARGEFILE_SOURCE
-# define _LARGEFILE_SOURCE 1
-# if (_XOPEN_SOURCE - 0) >= 600
-# define __USE_XOPEN2K 1
-# undef __USE_ISOC99
-# define __USE_ISOC99 1
-# endif
-# else
-# ifdef _XOPEN_SOURCE_EXTENDED
-# define __USE_XOPEN_EXTENDED 1
-# endif
-# endif
-#endif
-
-#ifdef _LARGEFILE_SOURCE
-# define __USE_LARGEFILE 1
-#endif
-
-#ifdef _LARGEFILE64_SOURCE
-# define __USE_LARGEFILE64 1
-#endif
-
-#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS == 64
-# define __USE_FILE_OFFSET64 1
-#endif
-
-#if defined _BSD_SOURCE || defined _SVID_SOURCE
-# define __USE_MISC 1
-#endif
-
-#ifdef _BSD_SOURCE
-# define __USE_BSD 1
-#endif
-
-#ifdef _SVID_SOURCE
-# define __USE_SVID 1
-#endif
-
-#ifdef _GNU_SOURCE
-# define __USE_GNU 1
-#endif
-
-#if defined _REENTRANT || defined _THREAD_SAFE
-# define __USE_REENTRANT 1
-#endif
-
-#if _FORTIFY_SOURCE > 0 && __GNUC_PREREQ (4, 1) && __OPTIMIZE__ > 0
-# if _FORTIFY_SOURCE == 1
-# define __USE_FORTIFY_LEVEL 1
-# elif _FORTIFY_SOURCE > 1
-# define __USE_FORTIFY_LEVEL 2
-# endif
-#endif
-
-/* We do support the IEC 559 math functionality, real and complex. */
-#define __STDC_IEC_559__ 1
-#define __STDC_IEC_559_COMPLEX__ 1
-
-/* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.1. */
-#define __STDC_ISO_10646__ 200009L
-
-/* This macro indicates that the installed library is the GNU C Library.
- For historic reasons the value now is 6 and this will stay from now
- on. The use of this variable is deprecated. Use __GLIBC__ and
- __GLIBC_MINOR__ now (see below) when you want to test for a specific
- GNU C library version and use the values in <gnu/lib-names.h> to get
- the sonames of the shared libraries. */
-#undef __GNU_LIBRARY__
-#define __GNU_LIBRARY__ 6
-
-/* Major and minor version number of the GNU C library package. Use
- these macros to test for features in specific releases. */
-#define __GLIBC__ 2
-#define __GLIBC_MINOR__ 3
-
-#define __GLIBC_PREREQ(maj, min) \
- ((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
-
-/* Decide whether a compiler supports the long long datatypes. */
-#if defined __GNUC__ \
- || (defined __PGI && defined __i386__ ) \
- || (defined __INTEL_COMPILER && (defined __i386__ || defined __ia64__)) \
- || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
-# define __GLIBC_HAVE_LONG_LONG 1
-#endif
-
-/* This is here only because every header file already includes this one. */
-#ifndef __ASSEMBLER__
-# ifndef _SYS_CDEFS_H
-# include <sys/cdefs.h>
-# endif
-
-/* If we don't have __REDIRECT, prototypes will be missing if
- __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64]. */
-# if defined __USE_FILE_OFFSET64 && !defined __REDIRECT
-# define __USE_LARGEFILE 1
-# define __USE_LARGEFILE64 1
-# endif
-
-#endif /* !ASSEMBLER */
-
-/* Decide whether we can define 'extern inline' functions in headers. */
-#if __GNUC_PREREQ (2, 7) && defined __OPTIMIZE__ \
- && !defined __OPTIMIZE_SIZE__ && !defined __NO_INLINE__
-# define __USE_EXTERN_INLINES 1
-#endif
-
-
-/* This is here only because every header file already includes this one.
- Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
- <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
- that will always return failure (and set errno to ENOSYS). */
-#include <gnu/stubs.h>
-
-
-#endif /* features.h */
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