blob: dbebf2e78d99a5e7857e76069dffbc31285379eb [file] [log] [blame]
/***************************************************************************
*
* _config-gcc.h - GCC configuration definitions
*
* This is an internal header file used to implement the C++ Standard
* Library. It should never be #included directly by a program.
*
* $Id$
*
***************************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*
* Copyright 1994-2008 Rogue Wave Software, Inc.
*
**************************************************************************/
// _REENTRANT is defined by the -pthread compiler option
#ifndef _RWSTD_NO_IMPLICIT_INCLUSION
# define _RWSTD_NO_IMPLICIT_INCLUSION
#endif
#ifndef _RWSTD_NO_EXPORT
// not implemented
# define _RWSTD_NO_EXPORT
#endif
#ifndef __EXCEPTIONS
// disable exceptions when the macro __EXCEPTIONS
// is not #defined by the compiler, e.g., when
// the -fno-exceptions option is used
# ifndef _RWSTD_NO_EXCEPTIONS
# define _RWSTD_NO_EXCEPTIONS
# endif // _RWSTD_NO_EXCEPTIONS
#endif // __EXCEPTIONS
#if !defined (_RWSTD_USE_PURE_C_HEADERS)
// disabled except when requested
# define _RWSTD_NO_PURE_C_HEADERS
#endif // !_RWSTD_USE_PURE_C_HEADERS
#ifdef _RWSTD_NO_PURE_C_HEADERS
// deprecated C headers (the <xxx.h> kind) are fully implemented
// in terms of the pure C++ C library headers (the <cxxx> kind)
# define _RWSTD_NO_DEPRECATED_C_HEADERS
#endif // _RWSTD_NO_PURE_C_HEADERS
#if !defined (_RWSTD_STRICT_ANSI) && __GNUG__ <= 2 && __GNUC_MINOR__ < 97
// prevent gcc 2.9x ICE
# define _RWSTD_NO_PLACEMENT_DELETE
#endif // !_RWSTD_STRICT_ANSI
#if __GNUG__ < 3
// gcc 2.x doesn't understand the extern template syntax
// but only issues a warning: ANSI C++ forbids the use
// of `extern' on explicit instantiations
# ifndef _RWSTD_NO_EXTERN_TEMPLATE
# define _RWSTD_NO_EXTERN_TEMPLATE
# endif // _RWSTD_NO_EXTERN_TEMPLATE
#endif // gcc 2.x
#if __GNUG__ <= 2 && __GNUC_MINOR__ < 97 && defined (_RWSTD_NO_HONOR_STD)
// standard iostream objects are declared as objects of their respective
// types by defined as POD's to prevent their destruction during program
// lifetime (done to work around a g++ 2.95.2 bug that prevents g++
// from deducing the type of references to the objects in template code)
# define _RWSTD_NO_IOSTREAM_OBJECT_REFS
#endif //__GNUG__ <= 2 && __GNUC_MINOR__ < 97 && _RWSTD_NO_HONOR_STD
#define _RWSTD_GNUC_ATTRIBUTE(attr) __attribute__ (attr)
// gcc attribute((noreturn)) to indicate that a function doesn't return
// (it may still exit by throwing an exception or by calling longjmp)
#define _RWSTD_ATTRIBUTE_NORETURN _RWSTD_GNUC_ATTRIBUTE ((noreturn))
#if __GNUG__ > 3 || __GNUG__ == 3 && __GNUC_MINOR__ >= 3
// gcc attribute((nothrow)) to indicate that a function doesn't throw
// exceptions; unlike the emtpy exception specification the attribute
// avoids the cost of checking for exceptions and calling unexpected()
# define _RWSTD_ATTRIBUTE_NOTHROW _RWSTD_GNUC_ATTRIBUTE ((nothrow))
#endif // gcc >= 3.3
#ifdef _RWSTD_OS_LINUX
# ifdef _RWSTD_NO_NEW_HEADER
# undef _RWSTD_NO_NEW_HEADER
# endif // _RWSTD_NO_NEW_HEADER
// our <cxxx> libc headers put the libc functions in namespace std
# ifdef _RWSTD_NO_LIBC_IN_STD
# undef _RWSTD_NO_LIBC_IN_STD
# endif // _RWSTD_NO_LIBC_IN_STD
# ifdef _RWSTD_ANSI_C_LIMITS_H
// prevent system header warnings
# undef _RWSTD_ANSI_C_LIMITS_H
# define _RWSTD_ANSI_C_LIMITS_H <../include/limits.h>
# endif // _RWSTD_ANSI_C_LIMITS_H
#endif // _RWSTD_OS_LINUX
#ifdef _RWSTD_OS_AIX
// functions called from member functions of explicitly instantiated
// class templates aren't "implicitly" instantiated (compiler bug)
# define _RWSTD_NO_IMPLICIT_INSTANTIATION
#endif
// force using /usr/include/math.h
// prevent recursion caused by pulling in gcc's own "fixed" header
#undef _RWSTD_ANSI_C_MATH_H
// use new C++ libc headers
#undef _RWSTD_NO_NEW_HEADER
#undef _RWSTD_NO_LIBC_IN_STD
#undef _RWSTD_NO_DEPRECATED_LIBC_IN_STD
/*** CygWin ***************************************************************/
#ifdef __CYGWIN__
// use our own C++ libc headers
# undef _RWSTD_NO_NEW_HEADER
// libc is wrapped in namespaces std
# undef _RWSTD_NO_LIBC_IN_STD
// deprecated C++ libc headers don't introduce names into namespace std
# ifndef _RWSTD_NO_DEPRECATED_LIBC_IN_STD
# define _RWSTD_NO_DEPRECATED_LIBC_IN_STD
# endif
# ifdef _RWSHARED
// disable exporting tmeplate instantiations in shared builds
// see STDCXX-507
# define _RWSTD_NO_EXTERN_TEMPLATE
// operator new and delete is not reliably replaceable across
// shared library boundaries, which includes the shared library
// version of the language support library
# define _RWSTD_NO_REPLACEABLE_NEW_DELETE
# endif
#endif // __CYGWIN__
/*** MinGW ****************************************************************/
#ifdef __MINGW32__
# ifdef _RWSHARED
// disable exporting temeplate instantiations in shared builds
// see STDCXX-507
# define _RWSTD_NO_EXTERN_TEMPLATE
# endif
// operator new and delete is not reliably replaceable across
// shared library boundaries, which includes the shared library
// version of the language support library
// on MinGW the language support library is always shared
# define _RWSTD_NO_REPLACEABLE_NEW_DELETE
#endif // __MINGW32__
/*** Tru64 UNIX ***********************************************************/
#ifdef _RWSTD_OS_OSF1
// sizeof (long double) == sizeof (double), 'L' causes SIGSEGV
# define _RWSTD_LDBL_PRINTF_PREFIX ""
# define _RWSTD_LDBL_SCANF_PREFIX "l"
#endif // _RWSTD_OS_OSF1
/*** Solaris **************************************************************/
#ifdef _RWSTD_OS_SUNOS
// _SOLARIS_THREADS #defined when the -threads option is used on SunOS
# if defined (_SOLARIS_THREADS) && !defined (_RWSTD_SOLARIS_THREADS)
# define _RWSTD_SOLARIS_THREADS
# endif // _SOLARIS_THREADS && !_RWSTD_SOLARIS_THREADS
// _PTHREADS #defined when the -pthreads option is used on SunOS
# if defined (_PTHREADS) && !defined (_RWSTD_POSIX_THREADS)
# define _RWSTD_POSIX_THREADS
# endif // _PTHREADS && !_RWSTD_POSIX_THREADS
# if __GNUG__ == 3 && __GNUC_MINOR__ < 1
// Avoid gcc 3.0.1 header configuration confusion with wchar
# ifndef _RWSTD_NO_NEW_HEADER
# define _RWSTD_NO_NEW_HEADER
# endif
# ifndef _RWSTD_NO_LIBC_IN_STD
# define _RWSTD_NO_LIBC_IN_STD
# endif
# endif // __GNUG__ == 3 && __GNUC_MINOR__ < 1
#endif // _RWSTD_OS_SUNOS
#if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3))
# define _RWSTD_TT_IS_ENUM(T) __is_enum(T)
# define _RWSTD_TT_IS_UNION(T) __is_union(T)
# define _RWSTD_TT_IS_CLASS(T) __is_class(T)
# define _RWSTD_TT_IS_POD(T) __is_pod(T)
# define _RWSTD_TT_IS_EMPTY(T) __is_empty(T)
# define _RWSTD_TT_IS_POLYMORPHIC(T) __is_polymorphic(T)
# define _RWSTD_TT_IS_ABSTRACT(T) __is_abstract(T)
# define _RWSTD_TT_IS_BASE_OF(T,U) __is_base_of(T,U)
# define _RWSTD_TT_HAS_TRIVIAL_CTOR(T) __has_trivial_constructor(T)
# define _RWSTD_TT_HAS_TRIVIAL_COPY(T) __has_trivial_copy(T)
# define _RWSTD_TT_HAS_TRIVIAL_ASSIGN(T) __has_trivial_assign(T)
# define _RWSTD_TT_HAS_TRIVIAL_DTOR(T) __has_trivial_destructor(T)
# define _RWSTD_TT_HAS_NOTHROW_CTOR(T) __has_nothrow_constructor(T)
# define _RWSTD_TT_HAS_NOTHROW_COPY(T) __has_nothrow_copy(T)
# define _RWSTD_TT_HAS_NOTHROW_ASSIGN(T) __has_nothrow_assign(T)
# define _RWSTD_TT_HAS_VIRTUAL_DTOR(T) __has_virtual_destructor(T)
# define _RWSTD_TT_ALIGN_OF(T) __alignof__(T)
# define _RWSTD_TT_MAX_ALIGNMENT 16
# define _RWSTD_TT_ALIGNED_POD(N) \
struct { unsigned char _C_align __attribute__ ((aligned ((N)))); }
# ifdef __GXX_EXPERIMENTAL_CXX0X__
// enable C++ 0x features disabled in builds
// configured without -std=c++0x or -std=gnu++0x
// C++ 0x features supported since 4.3.0
# undef _RWSTD_NO_VARIADIC_TEMPLATES
# undef _RWSTD_NO_RVALUE_REFERENCES
# endif
#endif // __GNUC__ >= 4.3