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Diffstat (limited to 'features.h')
| -rw-r--r-- | features.h | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/features.h b/features.h deleted file mode 100644 index c38480e637..0000000000 --- a/features.h +++ /dev/null @@ -1,236 +0,0 @@ -/* Copyright (C) 1991, 92, 93, 95, 96, 97 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. 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. - _ISOC9X_SOURCE Extensions to ISO C 89 from ISO C 9x. - _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 - _XOPEN_SOURCE Includes POSIX and XPG things. - _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions. - _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. - - The `-ansi' switch to the GNU C compiler defines __STRICT_ANSI__. - If none of these are defined, the default is all but _GNU_SOURCE. - 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_ISOC9X Define ISO C 9X things. - __USE_POSIX Define IEEE Std 1003.1 things. - __USE_POSIX2 Define IEEE Std 1003.2 things. - __USE_POSIX199309 Define IEEE Std 1003.1b things. - __USE_XOPEN Define XPG things. - __USE_XOPEN_EXTENDED Define X/Open Unix things. - __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. - __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_ISOC9X -#undef __USE_POSIX -#undef __USE_POSIX2 -#undef __USE_POSIX199309 -#undef __USE_XOPEN -#undef __USE_XOPEN_EXTENDED -#undef __USE_BSD -#undef __USE_SVID -#undef __USE_MISC -#undef __USE_GNU -#undef __USE_REENTRANT -#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 - - -/* 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 _ISOC9X_SOURCE -#define _ISOC9X_SOURCE 1 -#undef _POSIX_SOURCE -#define _POSIX_SOURCE 1 -#undef _POSIX_C_SOURCE -#define _POSIX_C_SOURCE 199309L -#undef _XOPEN_SOURCE -#define _XOPEN_SOURCE 1 -#undef _XOPEN_SOURCE_EXTENDED -#define _XOPEN_SOURCE_EXTENDED 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 _ISOC9X_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 C 9x extension. It will go away as soon - as this standard is officially released. */ -#ifdef _ISOC9X_SOURCE -#define __USE_ISOC9X 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__ && !defined _POSIX_SOURCE && \ - !defined _POSIX_C_SOURCE) -#define _POSIX_SOURCE 1 -#ifdef _XOPEN_SOURCE -#define _POSIX_C_SOURCE 2 -#else -#define _POSIX_C_SOURCE 199309L -#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 defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 199309L -#define __USE_POSIX199309 1 -#endif - -#ifdef _XOPEN_SOURCE -#define __USE_XOPEN 1 -#ifdef _XOPEN_SOURCE_EXTENDED -#define __USE_XOPEN_EXTENDED 1 -#endif -#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 - -/* We do support the IEC 559 math functionality, real and complex. */ -#define __STDC_IEC_559__ 1 -#define __STDC_IEC_559_COMPLEX__ 1 - -/* 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__ 1 - - -#if !defined __GNUC__ || __GNUC__ < 2 -/* In GCC version 2, (__extension__ EXPR) will not complain - about GCC extensions used in EXPR under -ansi or -pedantic. */ -#define __extension__ -#endif - - -/* This is here only because every header file already includes this one. */ -#ifndef __ASSEMBLER__ -#include <sys/cdefs.h> -#endif - -/* This is here only because every header file already includes this one. */ -#ifndef _LIBC -/* Get the definitions of all the appropriate `__stub_FUNCTION' symbols. - <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub - which will always return failure (and set errno to ENOSYS). - - We avoid including <gnu/stubs.h> when compiling the C library itself to - avoid a dependency loop. stubs.h depends on every object file. If - this #include were done for the library source code, then every object - file would depend on stubs.h. */ - -#include <gnu/stubs.h> -#endif - -#endif /* features.h */ |