mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
487253ea1f
* Makerules (lib%.so: lib%_pic.a): Pass -soname switch giving the library's name including $(libprefix) and major version number. * locale/locale-ctype.c (allocate_arrays): Use xmalloc and bzero in place of xcalloc. * Makeconfig (prefix, exec_prefix, libprefix): Instead of `ifndef', use the $(origin) function to only set these if they are undefined, and not if they are defined to empty. * gnu-versions.h: New file. * features.h (__GNU_LIBRARY__): Increase value to 5.
164 lines
5.2 KiB
C
164 lines
5.2 KiB
C
/* Copyright (C) 1991, 1992, 1993, 1995 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., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#ifndef _FEATURES_H
|
|
|
|
#define _FEATURES_H 1
|
|
|
|
/* These are defined by the user (or the compiler)
|
|
to specify the desired environment:
|
|
|
|
__STRICT_ANSI__ ANSI Standard C.
|
|
_POSIX_SOURCE IEEE Std 1003.1.
|
|
_POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if ==2 add IEEE Std 1003.2.
|
|
_BSD_SOURCE ANSI, POSIX, and 4.3BSD things.
|
|
_SVID_SOURCE ANSI, POSIX, and SVID things.
|
|
_GNU_SOURCE All of the above, plus GNU extensions.
|
|
|
|
The `-ansi' switch to the GNU C compiler defines __STRICT_ANSI__.
|
|
If none of these are defined, the default is _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 ANSI 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_POSIX Define IEEE Std 1003.1 things.
|
|
__USE_POSIX2 Define IEEE Std 1003.2 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.
|
|
__FAVOR_BSD Favor 4.3BSD things in cases of conflict.
|
|
|
|
The macro `__GNU_LIBRARY__' is defined by this file unconditionally.
|
|
|
|
All macros defined by this file are defined as 1.
|
|
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_POSIX
|
|
#undef __USE_POSIX2
|
|
#undef __USE_BSD
|
|
#undef __USE_SVID
|
|
#undef __USE_MISC
|
|
#undef __USE_GNU
|
|
#undef __FAVOR_BSD
|
|
|
|
|
|
/* If nothing is defined, define _GNU_SOURCE. */
|
|
#if (!defined(_GNU_SOURCE) && !defined(__STRICT_ANSI__) && \
|
|
!defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) && \
|
|
!defined(_BSD_SOURCE) && !defined(_SVID_SOURCE))
|
|
#define _GNU_SOURCE 1
|
|
#endif
|
|
|
|
|
|
/* Always use ANSI things. */
|
|
#define __USE_ANSI 1
|
|
|
|
|
|
/* If _BSD_SOURCE was defined by the user, favor BSD over POSIX. */
|
|
#ifdef _BSD_SOURCE
|
|
#define __FAVOR_BSD 1
|
|
#endif
|
|
|
|
|
|
/* If nothing (other than _GNU_SOURCE) is defined,
|
|
define _BSD_SOURCE and _SVID_SOURCE. */
|
|
#if (!defined(__STRICT_ANSI__) && !defined(_POSIX_SOURCE) && \
|
|
!defined(_POSIX_C_SOURCE) && !defined(_BSD_SOURCE) && \
|
|
!defined(_SVID_SOURCE))
|
|
#define _BSD_SOURCE 1
|
|
#define _SVID_SOURCE 1
|
|
#endif
|
|
|
|
/* If none of the ANSI/POSIX macros are defined, use POSIX.1 and POSIX.2. */
|
|
#if (!defined(__STRICT_ANSI__) && !defined(_POSIX_SOURCE) && \
|
|
!defined(_POSIX_C_SOURCE))
|
|
#define _POSIX_SOURCE 1
|
|
#define _POSIX_C_SOURCE 2
|
|
#endif
|
|
|
|
#if defined(_POSIX_SOURCE) || _POSIX_C_SOURCE >= 1
|
|
#define __USE_POSIX 1
|
|
#endif
|
|
|
|
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 2
|
|
#define __USE_POSIX2 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
|
|
|
|
|
|
/* This macro indicates that the installed library is the GNU C Library.
|
|
Its value must be incremented whenever any existing library interface
|
|
changes such that callers must be recompiled with the new header files.
|
|
This value should always coincide with the major version number used for
|
|
the shared C library corresponding to this set of header files. */
|
|
|
|
#undef __GNU_LIBRARY__
|
|
#define __GNU_LIBRARY__ 5
|
|
|
|
|
|
#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. */
|
|
#include <sys/cdefs.h>
|
|
|
|
/* This is here only because every header file already includes this one. */
|
|
#ifndef _LIBC
|
|
/* Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
|
|
<stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
|
|
which will always return failure (and set errno to ENOSYS).
|
|
|
|
We avoid including <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 <stubs.h>
|
|
#endif
|
|
|
|
#endif /* __features.h */
|