-/* Copyright (C) 1991-1993,1995-2003,2004,2005 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2012 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
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. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#ifndef _FEATURES_H
#define _FEATURES_H 1
__STRICT_ANSI__ ISO Standard C.
_ISOC99_SOURCE Extensions to ISO C89 from ISO C99.
+ _ISOC11_SOURCE Extensions to ISO C99 from ISO C11.
_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
+ if >=200809L, all of IEEE 1003.1-2008
_XOPEN_SOURCE Includes POSIX and XPG things. Set to 500 if
Single Unix conformance is wanted, to 600 for the
- upcoming sixth revision.
+ sixth revision, to 700 for the seventh 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.
+ _ATFILE_SOURCE Additional *at interfaces.
_GNU_SOURCE All of the above, plus GNU extensions.
_REENTRANT Select additionally reentrant object.
_THREAD_SAFE Same as _REENTRANT, often used by other systems.
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.
+ 200112L. 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_ISOC11 Define ISO C11 things.
__USE_ISOC99 Define ISO C99 things.
+ __USE_ISOC95 Define ISO C90 AMD1 (C95) 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_XOPEN_EXTENDED Define X/Open Unix things.
__USE_UNIX98 Define Single Unix V2 things.
__USE_XOPEN2K Define XPG6 things.
+ __USE_XOPEN2KXSI Define XPG6 XSI things.
+ __USE_XOPEN2K8 Define XPG7 things.
+ __USE_XOPEN2K8XSI Define XPG7 XSI 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_ATFILE Define *at interfaces and AT_* constants for them.
__USE_GNU Define GNU extensions.
__USE_REENTRANT Define reentrant/thread-safe *_r functions.
__USE_FORTIFY_LEVEL Additional security measures used, according to level.
/* Undefine everything, so we get a clean slate. */
+#undef __USE_ISOC11
#undef __USE_ISOC99
+#undef __USE_ISOC95
+#undef __USE_ISOCXX11
#undef __USE_POSIX
#undef __USE_POSIX2
#undef __USE_POSIX199309
#undef __USE_XOPEN_EXTENDED
#undef __USE_UNIX98
#undef __USE_XOPEN2K
+#undef __USE_XOPEN2KXSI
+#undef __USE_XOPEN2K8
+#undef __USE_XOPEN2K8XSI
#undef __USE_LARGEFILE
#undef __USE_LARGEFILE64
#undef __USE_FILE_OFFSET64
#undef __USE_BSD
#undef __USE_SVID
#undef __USE_MISC
+#undef __USE_ATFILE
#undef __USE_GNU
#undef __USE_REENTRANT
#undef __USE_FORTIFY_LEVEL
/* 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)
+ defined _XOPEN_SOURCE || 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 _ISOC95_SOURCE
+# define _ISOC95_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 199506L
+# define _POSIX_C_SOURCE 200809L
# undef _XOPEN_SOURCE
-# define _XOPEN_SOURCE 600
+# define _XOPEN_SOURCE 700
# undef _XOPEN_SOURCE_EXTENDED
# define _XOPEN_SOURCE_EXTENDED 1
# undef _LARGEFILE64_SOURCE
# define _BSD_SOURCE 1
# undef _SVID_SOURCE
# define _SVID_SOURCE 1
+# undef _ATFILE_SOURCE
+# define _ATFILE_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)
+ !defined _XOPEN_SOURCE && !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 \
+/* This is to enable the ISO C11 extension. */
+#if (defined _ISOC11_SOURCE \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L))
+# define __USE_ISOC11 1
+#endif
+
+/* This is to enable the ISO C99 extension. */
+#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
# define __USE_ISOC99 1
#endif
+/* This is to enable the ISO C90 Amendment 1:1995 extension. */
+#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L))
+# define __USE_ISOC95 1
+#endif
+
+/* This is to enable compatibility for ISO C++11.
+
+ So far g++ does not provide a macro. Check the temporary macro for
+ now, too. */
+#if ((defined __cplusplus && __cplusplus >= 201103L) \
+ || defined __GXX_EXPERIMENTAL_CXX0X__)
+# define __USE_ISOCXX11 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) && \
# define _POSIX_SOURCE 1
# if defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 500
# define _POSIX_C_SOURCE 2
-# else
+# elif defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 600
# define _POSIX_C_SOURCE 199506L
+# elif defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) < 700
+# define _POSIX_C_SOURCE 200112L
+# else
+# define _POSIX_C_SOURCE 200809L
# endif
+# define __USE_POSIX_IMPLICITLY 1
#endif
#if defined _POSIX_SOURCE || _POSIX_C_SOURCE >= 1 || defined _XOPEN_SOURCE
#if (_POSIX_C_SOURCE - 0) >= 200112L
# define __USE_XOPEN2K 1
+# undef __USE_ISOC95
+# define __USE_ISOC95 1
+# undef __USE_ISOC99
+# define __USE_ISOC99 1
+#endif
+
+#if (_POSIX_C_SOURCE - 0) >= 200809L
+# define __USE_XOPEN2K8 1
+# undef _ATFILE_SOURCE
+# define _ATFILE_SOURCE 1
#endif
#ifdef _XOPEN_SOURCE
# undef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE 1
# if (_XOPEN_SOURCE - 0) >= 600
+# if (_XOPEN_SOURCE - 0) >= 700
+# define __USE_XOPEN2K8 1
+# define __USE_XOPEN2K8XSI 1
+# endif
# define __USE_XOPEN2K 1
+# define __USE_XOPEN2KXSI 1
+# undef __USE_ISOC95
+# define __USE_ISOC95 1
# undef __USE_ISOC99
# define __USE_ISOC99 1
# endif
# define __USE_SVID 1
#endif
+#ifdef _ATFILE_SOURCE
+# define __USE_ATFILE 1
+#endif
+
#ifdef _GNU_SOURCE
# define __USE_GNU 1
#endif
# define __USE_REENTRANT 1
#endif
-#if _FORTIFY_SOURCE > 0 && __GNUC_PREREQ (4, 1) && __OPTIMIZE__ > 0
-# if _FORTIFY_SOURCE == 1
-# define __USE_FORTIFY_LEVEL 1
+#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0
+# if !defined __OPTIMIZE__ || __OPTIMIZE__ <= 0
+# warning _FORTIFY_SOURCE requires compiling with optimization (-O)
+# elif !__GNUC_PREREQ (4, 1)
+# warning _FORTIFY_SOURCE requires GCC 4.1 or later
# elif _FORTIFY_SOURCE > 1
# define __USE_FORTIFY_LEVEL 2
+# else
+# define __USE_FORTIFY_LEVEL 1
# endif
#endif
+#ifndef __USE_FORTIFY_LEVEL
+# define __USE_FORTIFY_LEVEL 0
+#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
+/* Get definitions of __STDC_* predefined macros, if the compiler has
+ not preincluded this header automatically. */
+#include <stdc-predef.h>
/* 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
/* 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__ 4
+#define __GLIBC_MINOR__ 15
#define __GLIBC_PREREQ(maj, min) \
((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
/* Decide whether we can define 'extern inline' functions in headers. */
#if __GNUC_PREREQ (2, 7) && defined __OPTIMIZE__ \
- && !defined __OPTIMIZE_SIZE__ && !defined __NO_INLINE__
+ && !defined __OPTIMIZE_SIZE__ && !defined __NO_INLINE__ \
+ && defined __extern_inline
# define __USE_EXTERN_INLINES 1
#endif
git://sourceware.org / glibc.git / blobdiff