Retro68/gcc/libstdc++-v3/include/bits/c++config
2014-09-21 19:33:12 +02:00

470 lines
13 KiB
C++

// Predefined symbols and macros -*- C++ -*-
// Copyright (C) 1997-2014 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This 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 General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file bits/c++config.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{iosfwd}
*/
#ifndef _GLIBCXX_CXX_CONFIG_H
#define _GLIBCXX_CXX_CONFIG_H 1
// The current version of the C++ library in compressed ISO date format.
#define __GLIBCXX__
// Macros for various attributes.
// _GLIBCXX_PURE
// _GLIBCXX_CONST
// _GLIBCXX_NORETURN
// _GLIBCXX_NOTHROW
// _GLIBCXX_VISIBILITY
#ifndef _GLIBCXX_PURE
# define _GLIBCXX_PURE __attribute__ ((__pure__))
#endif
#ifndef _GLIBCXX_CONST
# define _GLIBCXX_CONST __attribute__ ((__const__))
#endif
#ifndef _GLIBCXX_NORETURN
# define _GLIBCXX_NORETURN __attribute__ ((__noreturn__))
#endif
// See below for C++
#ifndef _GLIBCXX_NOTHROW
# ifndef __cplusplus
# define _GLIBCXX_NOTHROW __attribute__((__nothrow__))
# endif
#endif
// Macros for visibility attributes.
// _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
// _GLIBCXX_VISIBILITY
#define _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
#if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
# define _GLIBCXX_VISIBILITY(V) __attribute__ ((__visibility__ (#V)))
#else
// If this is not supplied by the OS-specific or CPU-specific
// headers included below, it will be defined to an empty default.
# define _GLIBCXX_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY(V)
#endif
// Macros for deprecated attributes.
// _GLIBCXX_USE_DEPRECATED
// _GLIBCXX_DEPRECATED
#ifndef _GLIBCXX_USE_DEPRECATED
# define _GLIBCXX_USE_DEPRECATED 1
#endif
#if defined(__DEPRECATED) && (__cplusplus >= 201103L)
# define _GLIBCXX_DEPRECATED __attribute__ ((__deprecated__))
#else
# define _GLIBCXX_DEPRECATED
#endif
// Macros for ABI tag attributes.
#ifndef _GLIBCXX_ABI_TAG_CXX11
# define _GLIBCXX_ABI_TAG_CXX11 __attribute ((__abi_tag__ ("cxx11")))
#endif
#if __cplusplus
// Macro for constexpr, to support in mixed 03/0x mode.
#ifndef _GLIBCXX_CONSTEXPR
# if __cplusplus >= 201103L
# define _GLIBCXX_CONSTEXPR constexpr
# define _GLIBCXX_USE_CONSTEXPR constexpr
# else
# define _GLIBCXX_CONSTEXPR
# define _GLIBCXX_USE_CONSTEXPR const
# endif
#endif
// Macro for noexcept, to support in mixed 03/0x mode.
#ifndef _GLIBCXX_NOEXCEPT
# if __cplusplus >= 201103L
# define _GLIBCXX_NOEXCEPT noexcept
# define _GLIBCXX_USE_NOEXCEPT noexcept
# define _GLIBCXX_THROW(_EXC)
# else
# define _GLIBCXX_NOEXCEPT
# define _GLIBCXX_USE_NOEXCEPT throw()
# define _GLIBCXX_THROW(_EXC) throw(_EXC)
# endif
#endif
#ifndef _GLIBCXX_NOTHROW
# define _GLIBCXX_NOTHROW _GLIBCXX_USE_NOEXCEPT
#endif
#ifndef _GLIBCXX_THROW_OR_ABORT
# if __EXCEPTIONS
# define _GLIBCXX_THROW_OR_ABORT(_EXC) (throw (_EXC))
# else
# define _GLIBCXX_THROW_OR_ABORT(_EXC) (__builtin_abort())
# endif
#endif
// Macro for extern template, ie controling template linkage via use
// of extern keyword on template declaration. As documented in the g++
// manual, it inhibits all implicit instantiations and is used
// throughout the library to avoid multiple weak definitions for
// required types that are already explicitly instantiated in the
// library binary. This substantially reduces the binary size of
// resulting executables.
// Special case: _GLIBCXX_EXTERN_TEMPLATE == -1 disallows extern
// templates only in basic_string, thus activating its debug-mode
// checks even at -O0.
#define _GLIBCXX_EXTERN_TEMPLATE
/*
Outline of libstdc++ namespaces.
namespace std
{
namespace __debug { }
namespace __parallel { }
namespace __profile { }
namespace __cxx1998 { }
namespace __detail { }
namespace rel_ops { }
namespace tr1
{
namespace placeholders { }
namespace regex_constants { }
namespace __detail { }
}
namespace tr2 { }
namespace decimal { }
namespace chrono { }
namespace placeholders { }
namespace regex_constants { }
namespace this_thread { }
namespace experimental { }
}
namespace abi { }
namespace __gnu_cxx
{
namespace __detail { }
}
For full details see:
http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/namespaces.html
*/
namespace std
{
typedef __SIZE_TYPE__ size_t;
typedef __PTRDIFF_TYPE__ ptrdiff_t;
#if __cplusplus >= 201103L
typedef decltype(nullptr) nullptr_t;
#endif
}
// Defined if inline namespaces are used for versioning.
#define _GLIBCXX_INLINE_VERSION
// Inline namespace for symbol versioning.
#if _GLIBCXX_INLINE_VERSION
namespace std
{
inline namespace __7 { }
namespace rel_ops { inline namespace __7 { } }
namespace tr1
{
inline namespace __7 { }
namespace placeholders { inline namespace __7 { } }
namespace regex_constants { inline namespace __7 { } }
namespace __detail { inline namespace __7 { } }
}
namespace tr2
{ inline namespace __7 { } }
namespace decimal { inline namespace __7 { } }
namespace chrono { inline namespace __7 { } }
namespace placeholders { inline namespace __7 { } }
namespace regex_constants { inline namespace __7 { } }
namespace this_thread { inline namespace __7 { } }
namespace experimental { inline namespace __7 { } }
namespace __detail { inline namespace __7 { } }
}
namespace __gnu_cxx
{
inline namespace __7 { }
namespace __detail { inline namespace __7 { } }
}
# define _GLIBCXX_BEGIN_NAMESPACE_VERSION namespace __7 {
# define _GLIBCXX_END_NAMESPACE_VERSION }
#else
# define _GLIBCXX_BEGIN_NAMESPACE_VERSION
# define _GLIBCXX_END_NAMESPACE_VERSION
#endif
// Inline namespaces for special modes: debug, parallel, profile.
#if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PARALLEL) \
|| defined(_GLIBCXX_PROFILE)
namespace std
{
// Non-inline namespace for components replaced by alternates in active mode.
namespace __cxx1998
{
#if _GLIBCXX_INLINE_VERSION
inline namespace __7 { }
#endif
}
// Inline namespace for debug mode.
# ifdef _GLIBCXX_DEBUG
inline namespace __debug { }
# endif
// Inline namespaces for parallel mode.
# ifdef _GLIBCXX_PARALLEL
inline namespace __parallel { }
# endif
// Inline namespaces for profile mode
# ifdef _GLIBCXX_PROFILE
inline namespace __profile { }
# endif
}
// Check for invalid usage and unsupported mixed-mode use.
# if defined(_GLIBCXX_DEBUG) && defined(_GLIBCXX_PARALLEL)
# error illegal use of multiple inlined namespaces
# endif
# if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_DEBUG)
# error illegal use of multiple inlined namespaces
# endif
# if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_PARALLEL)
# error illegal use of multiple inlined namespaces
# endif
// Check for invalid use due to lack for weak symbols.
# if __NO_INLINE__ && !__GXX_WEAK__
# warning currently using inlined namespace mode which may fail \
without inlining due to lack of weak symbols
# endif
#endif
// Macros for namespace scope. Either namespace std:: or the name
// of some nested namespace within it corresponding to the active mode.
// _GLIBCXX_STD_A
// _GLIBCXX_STD_C
//
// Macros for opening/closing conditional namespaces.
// _GLIBCXX_BEGIN_NAMESPACE_ALGO
// _GLIBCXX_END_NAMESPACE_ALGO
// _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
// _GLIBCXX_END_NAMESPACE_CONTAINER
#if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PROFILE)
# define _GLIBCXX_STD_C __cxx1998
# define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER \
namespace _GLIBCXX_STD_C { _GLIBCXX_BEGIN_NAMESPACE_VERSION
# define _GLIBCXX_END_NAMESPACE_CONTAINER \
_GLIBCXX_END_NAMESPACE_VERSION }
# undef _GLIBCXX_EXTERN_TEMPLATE
# define _GLIBCXX_EXTERN_TEMPLATE -1
#endif
#ifdef _GLIBCXX_PARALLEL
# define _GLIBCXX_STD_A __cxx1998
# define _GLIBCXX_BEGIN_NAMESPACE_ALGO \
namespace _GLIBCXX_STD_A { _GLIBCXX_BEGIN_NAMESPACE_VERSION
# define _GLIBCXX_END_NAMESPACE_ALGO \
_GLIBCXX_END_NAMESPACE_VERSION }
#endif
#ifndef _GLIBCXX_STD_A
# define _GLIBCXX_STD_A std
#endif
#ifndef _GLIBCXX_STD_C
# define _GLIBCXX_STD_C std
#endif
#ifndef _GLIBCXX_BEGIN_NAMESPACE_ALGO
# define _GLIBCXX_BEGIN_NAMESPACE_ALGO
#endif
#ifndef _GLIBCXX_END_NAMESPACE_ALGO
# define _GLIBCXX_END_NAMESPACE_ALGO
#endif
#ifndef _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
# define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
#endif
#ifndef _GLIBCXX_END_NAMESPACE_CONTAINER
# define _GLIBCXX_END_NAMESPACE_CONTAINER
#endif
// GLIBCXX_ABI Deprecated
// Define if compatibility should be provided for -mlong-double-64.
#undef _GLIBCXX_LONG_DOUBLE_COMPAT
// Inline namespace for long double 128 mode.
#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
namespace std
{
inline namespace __gnu_cxx_ldbl128 { }
}
# define _GLIBCXX_NAMESPACE_LDBL __gnu_cxx_ldbl128::
# define _GLIBCXX_BEGIN_NAMESPACE_LDBL namespace __gnu_cxx_ldbl128 {
# define _GLIBCXX_END_NAMESPACE_LDBL }
#else
# define _GLIBCXX_NAMESPACE_LDBL
# define _GLIBCXX_BEGIN_NAMESPACE_LDBL
# define _GLIBCXX_END_NAMESPACE_LDBL
#endif
// Assert.
#if !defined(_GLIBCXX_DEBUG) && !defined(_GLIBCXX_PARALLEL)
# define __glibcxx_assert(_Condition)
#else
namespace std
{
// Avoid the use of assert, because we're trying to keep the <cassert>
// include out of the mix.
inline void
__replacement_assert(const char* __file, int __line,
const char* __function, const char* __condition)
{
__builtin_printf("%s:%d: %s: Assertion '%s' failed.\n", __file, __line,
__function, __condition);
__builtin_abort();
}
}
#define __glibcxx_assert(_Condition) \
do \
{ \
if (! (_Condition)) \
std::__replacement_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
#_Condition); \
} while (false)
#endif
// Macros for race detectors.
// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A) and
// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A) should be used to explain
// atomic (lock-free) synchronization to race detectors:
// the race detector will infer a happens-before arc from the former to the
// latter when they share the same argument pointer.
//
// The most frequent use case for these macros (and the only case in the
// current implementation of the library) is atomic reference counting:
// void _M_remove_reference()
// {
// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount);
// if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, -1) <= 0)
// {
// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount);
// _M_destroy(__a);
// }
// }
// The annotations in this example tell the race detector that all memory
// accesses occurred when the refcount was positive do not race with
// memory accesses which occurred after the refcount became zero.
#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE
# define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A)
#endif
#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER
# define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A)
#endif
// Macros for C linkage: define extern "C" linkage only when using C++.
# define _GLIBCXX_BEGIN_EXTERN_C extern "C" {
# define _GLIBCXX_END_EXTERN_C }
#else // !__cplusplus
# define _GLIBCXX_BEGIN_EXTERN_C
# define _GLIBCXX_END_EXTERN_C
#endif
// First includes.
// Pick up any OS-specific definitions.
#include <bits/os_defines.h>
// Pick up any CPU-specific definitions.
#include <bits/cpu_defines.h>
// If platform uses neither visibility nor psuedo-visibility,
// specify empty default for namespace annotation macros.
#ifndef _GLIBCXX_PSEUDO_VISIBILITY
# define _GLIBCXX_PSEUDO_VISIBILITY(V)
#endif
// Certain function definitions that are meant to be overridable from
// user code are decorated with this macro. For some targets, this
// macro causes these definitions to be weak.
#ifndef _GLIBCXX_WEAK_DEFINITION
# define _GLIBCXX_WEAK_DEFINITION
#endif
// The remainder of the prewritten config is automatic; all the
// user hooks are listed above.
// Create a boolean flag to be used to determine if --fast-math is set.
#ifdef __FAST_MATH__
# define _GLIBCXX_FAST_MATH 1
#else
# define _GLIBCXX_FAST_MATH 0
#endif
// This marks string literals in header files to be extracted for eventual
// translation. It is primarily used for messages in thrown exceptions; see
// src/functexcept.cc. We use __N because the more traditional _N is used
// for something else under certain OSes (see BADNAMES).
#define __N(msgid) (msgid)
// For example, <windows.h> is known to #define min and max as macros...
#undef min
#undef max
// End of prewritten config; the settings discovered at configure time follow.