1 // Predefined symbols and macros -*- C++ -*-
3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 // 2006, 2007, 2008 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
32 * This is an internal header file, included by other library headers.
33 * You should not attempt to use it directly.
36 #ifndef _GLIBCXX_CXX_CONFIG_H
37 #define _GLIBCXX_CXX_CONFIG_H 1
39 // Pick up any OS-specific definitions.
40 #include <bits/os_defines.h>
42 // Pick up any CPU-specific definitions.
43 #include <bits/cpu_defines.h>
45 // The current version of the C++ library in compressed ISO date format.
48 // Macros for visibility.
49 // _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
50 // _GLIBCXX_VISIBILITY_ATTR
51 #define _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
53 #if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
54 # define _GLIBCXX_VISIBILITY_ATTR(V) __attribute__ ((__visibility__ (#V)))
56 # define _GLIBCXX_VISIBILITY_ATTR(V)
59 // Macros for deprecated.
60 // _GLIBCXX_DEPRECATED
61 // _GLIBCXX_DEPRECATED_ATTR
62 #ifndef _GLIBCXX_DEPRECATED
63 # define _GLIBCXX_DEPRECATED 1
66 #if defined(__DEPRECATED) && defined(__GXX_EXPERIMENTAL_CXX0X__)
67 # define _GLIBCXX_DEPRECATED_ATTR __attribute__ ((__deprecated__))
69 # define _GLIBCXX_DEPRECATED_ATTR
72 // Macros for activating various namespace association modes.
73 // _GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG
74 // _GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL
75 // _GLIBCXX_NAMESPACE_ASSOCIATION_VERSION
77 // Guide to libstdc++ namespaces.
82 namespace __parallel { }
83 namespace __norm { } // __normative, __shadow, __replaced
84 namespace __cxx1998 { }
91 # define _GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG 1
94 #ifdef _GLIBCXX_PARALLEL
95 # define _GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL 1
98 #define _GLIBCXX_NAMESPACE_ASSOCIATION_VERSION
100 // Defined if any namespace association modes are active.
101 #if _GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG \
102 || _GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL \
103 || _GLIBCXX_NAMESPACE_ASSOCIATION_VERSION
104 # define _GLIBCXX_USE_NAMESPACE_ASSOCIATION 1
107 // Macros for namespace scope. Either namespace std:: or the name
108 // of some nested namespace within it.
114 // Macros for enclosing namespaces and possibly nested namespaces.
115 // _GLIBCXX_BEGIN_NAMESPACE
116 // _GLIBCXX_END_NAMESPACE
117 // _GLIBCXX_BEGIN_NESTED_NAMESPACE
118 // _GLIBCXX_END_NESTED_NAMESPACE
119 // _GLIBCXX_BEGIN_POTENTIAL_NESTED_NAMESPACE
120 // _GLIBCXX_END_POTENTIAL_NESTED_NAMESPACE
121 #ifndef _GLIBCXX_USE_NAMESPACE_ASSOCIATION
122 # define _GLIBCXX_STD_D _GLIBCXX_STD
123 # define _GLIBCXX_STD_P _GLIBCXX_STD
124 # define _GLIBCXX_STD std
125 # define _GLIBCXX_BEGIN_NESTED_NAMESPACE(X, Y) _GLIBCXX_BEGIN_NAMESPACE(X)
126 # define _GLIBCXX_END_NESTED_NAMESPACE _GLIBCXX_END_NAMESPACE
127 # define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
128 # define _GLIBCXX_END_NAMESPACE }
131 # if _GLIBCXX_NAMESPACE_ASSOCIATION_VERSION // && not anything else
132 # define _GLIBCXX_STD_D _GLIBCXX_STD
133 # define _GLIBCXX_STD_P _GLIBCXX_STD
134 # define _GLIBCXX_STD _6
135 # define _GLIBCXX_BEGIN_NAMESPACE(X) _GLIBCXX_BEGIN_NESTED_NAMESPACE(X, _6)
136 # define _GLIBCXX_END_NAMESPACE _GLIBCXX_END_NESTED_NAMESPACE
140 # if _GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG && !_GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL
141 # define _GLIBCXX_STD_D __norm
142 # define _GLIBCXX_STD_P _GLIBCXX_STD
143 # define _GLIBCXX_STD __cxx1998
144 # define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
145 # define _GLIBCXX_END_NAMESPACE }
146 # define _GLIBCXX_EXTERN_TEMPLATE 0
150 # if _GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL && !_GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG
151 # define _GLIBCXX_STD_D _GLIBCXX_STD
152 # define _GLIBCXX_STD_P __norm
153 # define _GLIBCXX_STD __cxx1998
154 # define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
155 # define _GLIBCXX_END_NAMESPACE }
156 # define _GLIBCXX_EXTERN_TEMPLATE 0
160 # if _GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL && _GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG
161 # define _GLIBCXX_STD_D __norm
162 # define _GLIBCXX_STD_P __norm
163 # define _GLIBCXX_STD __cxx1998
164 # define _GLIBCXX_BEGIN_NAMESPACE(X) namespace X _GLIBCXX_VISIBILITY_ATTR(default) {
165 # define _GLIBCXX_END_NAMESPACE }
166 # define _GLIBCXX_EXTERN_TEMPLATE 0
169 # if __NO_INLINE__ && !__GXX_WEAK__
170 # warning currently using namespace associated mode which may fail \
171 without inlining due to lack of weak symbols
174 # define _GLIBCXX_BEGIN_NESTED_NAMESPACE(X, Y) namespace X { namespace Y _GLIBCXX_VISIBILITY_ATTR(default) {
175 # define _GLIBCXX_END_NESTED_NAMESPACE } }
178 // Namespace associations for debug mode.
179 #if _GLIBCXX_NAMESPACE_ASSOCIATION_DEBUG
183 inline namespace __debug { }
184 inline namespace __cxx1998 { }
188 // Namespace associations for parallel mode.
189 #if _GLIBCXX_NAMESPACE_ASSOCIATION_PARALLEL
193 inline namespace __parallel { }
194 inline namespace __cxx1998 { }
198 // Namespace associations for versioning mode.
199 #if _GLIBCXX_NAMESPACE_ASSOCIATION_VERSION
202 inline namespace _6 { }
207 inline namespace _6 { }
214 inline namespace _6 { }
219 // Defines for C compatibility. In particular, define extern "C"
220 // linkage only when using C++, same with namespaces.
222 # define _GLIBCXX_BEGIN_EXTERN_C extern "C" {
223 # define _GLIBCXX_END_EXTERN_C }
225 # define _GLIBCXX_BEGIN_EXTERN_C
226 # define _GLIBCXX_END_EXTERN_C
227 # undef _GLIBCXX_BEGIN_NAMESPACE
228 # undef _GLIBCXX_END_NAMESPACE
229 # define _GLIBCXX_BEGIN_NAMESPACE(X)
230 # define _GLIBCXX_END_NAMESPACE
233 // Define if compatibility should be provided for -mlong-double-64.
234 #undef _GLIBCXX_LONG_DOUBLE_COMPAT
236 // XXX GLIBCXX_ABI Deprecated
237 // Namespace associations for long double 128 mode.
238 _GLIBCXX_BEGIN_NAMESPACE(std)
239 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
240 # define _GLIBCXX_LDBL_NAMESPACE __gnu_cxx_ldbl128::
241 # define _GLIBCXX_BEGIN_LDBL_NAMESPACE namespace __gnu_cxx_ldbl128 {
242 # define _GLIBCXX_END_LDBL_NAMESPACE }
243 inline namespace __gnu_cxx_ldbl128 { }
245 # define _GLIBCXX_LDBL_NAMESPACE
246 # define _GLIBCXX_BEGIN_LDBL_NAMESPACE
247 # define _GLIBCXX_END_LDBL_NAMESPACE
249 _GLIBCXX_END_NAMESPACE
252 // Allow use of "export template." This is currently not a feature
253 // that g++ supports.
254 // #define _GLIBCXX_EXPORT_TEMPLATE 1
256 // Allow use of the GNU syntax extension, "extern template." This
257 // extension is fully documented in the g++ manual, but in a nutshell,
258 // it inhibits all implicit instantiations and is used throughout the
259 // library to avoid multiple weak definitions for required types that
260 // are already explicitly instantiated in the library binary. This
261 // substantially reduces the binary size of resulting executables.
262 #ifndef _GLIBCXX_EXTERN_TEMPLATE
263 # define _GLIBCXX_EXTERN_TEMPLATE 1
267 // Certain function definitions that are meant to be overridable from
268 // user code are decorated with this macro. For some targets, this
269 // macro causes these definitions to be weak.
270 #ifndef _GLIBCXX_WEAK_DEFINITION
271 # define _GLIBCXX_WEAK_DEFINITION
274 // Macro used to indicate that the native "C" includes, when compiled
275 // as "C++", have declarations in namespace std and not the global
276 // namespace. Note, this is unrelated to possible "C" compatibility
277 // includes that inject C90/C99 names into the global namespace.
278 #if __cplusplus == 199711L
279 # define _GLIBCXX_NAMESPACE_GLOBAL_INJECTION 1
282 // The remainder of the prewritten config is automatic; all the
283 // user hooks are listed above.
285 // Create a boolean flag to be used to determine if --fast-math is set.
287 # define _GLIBCXX_FAST_MATH 1
289 # define _GLIBCXX_FAST_MATH 0
292 // This marks string literals in header files to be extracted for eventual
293 // translation. It is primarily used for messages in thrown exceptions; see
294 // src/functexcept.cc. We use __N because the more traditional _N is used
295 // for something else under certain OSes (see BADNAMES).
296 #define __N(msgid) (msgid)
298 // For example, <windows.h> is known to #define min and max as macros...
302 // End of prewritten config; the discovered settings follow.