1 // (C) Copyright John Maddock 2001.
2 // (C) Copyright Jens Maurer 2001.
3 // Use, modification and distribution are subject to the
4 // Boost Software License, Version 1.0. (See accompanying file
5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 // See http://www.boost.org for most recent version.
9 // config for libstdc++ v3
10 // not much to go in here:
12 #define BOOST_GNU_STDLIB 1
15 #define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCXX__)
17 #define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCPP__)
20 #if !defined(_GLIBCPP_USE_WCHAR_T) && !defined(_GLIBCXX_USE_WCHAR_T)
21 # define BOOST_NO_CWCHAR
22 # define BOOST_NO_CWCTYPE
23 # define BOOST_NO_STD_WSTRING
24 # define BOOST_NO_STD_WSTREAMBUF
27 #if defined(__osf__) && !defined(_REENTRANT) \
28 && ( defined(_GLIBCXX_HAVE_GTHR_DEFAULT) || defined(_GLIBCPP_HAVE_GTHR_DEFAULT) )
29 // GCC 3 on Tru64 forces the definition of _REENTRANT when any std lib header
30 // file is included, therefore for consistency we define it here as well.
34 #ifdef __GLIBCXX__ // gcc 3.4 and greater:
35 # if defined(_GLIBCXX_HAVE_GTHR_DEFAULT) \
36 || defined(_GLIBCXX__PTHREADS) \
37 || defined(_GLIBCXX_HAS_GTHREADS) \
42 // If the std lib has thread support turned on, then turn it on in Boost
43 // as well. We do this because some gcc-3.4 std lib headers define _REENTANT
44 // while others do not...
46 # define BOOST_HAS_THREADS
48 # define BOOST_DISABLE_THREADS
50 #elif defined(__GLIBCPP__) \
51 && !defined(_GLIBCPP_HAVE_GTHR_DEFAULT) \
52 && !defined(_GLIBCPP__PTHREADS)
53 // disable thread support if the std lib was built single threaded:
54 # define BOOST_DISABLE_THREADS
57 #if (defined(linux) || defined(__linux) || defined(__linux__)) && defined(__arm__) && defined(_GLIBCPP_HAVE_GTHR_DEFAULT)
58 // linux on arm apparently doesn't define _REENTRANT
59 // so just turn on threading support whenever the std lib is thread safe:
60 # define BOOST_HAS_THREADS
63 #if !defined(_GLIBCPP_USE_LONG_LONG) \
64 && !defined(_GLIBCXX_USE_LONG_LONG)\
65 && defined(BOOST_HAS_LONG_LONG)
66 // May have been set by compiler/*.hpp, but "long long" without library
67 // support is useless.
68 # undef BOOST_HAS_LONG_LONG
71 // Apple doesn't seem to reliably defined a *unix* macro
72 #if !defined(CYGWIN) && ( defined(__unix__) \
75 || defined(__APPLE__) \
81 #ifndef __VXWORKS__ // VxWorks uses Dinkum, not GNU STL with GCC
82 #if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
83 # define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
84 # define BOOST_HAS_SLIST
85 # define BOOST_HAS_HASH
86 # define BOOST_SLIST_HEADER <ext/slist>
87 # if !defined(__GNUC__) || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
88 # define BOOST_HASH_SET_HEADER <ext/hash_set>
89 # define BOOST_HASH_MAP_HEADER <ext/hash_map>
91 # define BOOST_HASH_SET_HEADER <backward/hash_set>
92 # define BOOST_HASH_MAP_HEADER <backward/hash_map>
98 // Decide whether we have C++11 support turned on:
100 #if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103)
101 # define BOOST_LIBSTDCXX11
105 // Decide which version of libstdc++ we have, normally
106 // libstdc++ C++0x support is detected via __GNUC__, __GNUC_MINOR__, and possibly
107 // __GNUC_PATCHLEVEL__ at the suggestion of Jonathan Wakely, one of the libstdc++
108 // developers. He also commented:
110 // "I'm not sure how useful __GLIBCXX__ is for your purposes, for instance in
111 // GCC 4.2.4 it is set to 20080519 but in GCC 4.3.0 it is set to 20080305.
112 // Although 4.3.0 was released earlier than 4.2.4, it has better C++0x support
113 // than any release in the 4.2 series."
115 // Another resource for understanding libstdc++ features is:
116 // http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#manual.intro.status.standard.200x
118 // However, using the GCC version number fails when the compiler is clang since this
119 // only ever claims to emulate GCC-4.2, see https://svn.boost.org/trac/boost/ticket/7473
120 // for a long discussion on this issue. What we can do though is use clang's __has_include
121 // to detect the presence of a C++11 header that was introduced with a specific GCC release.
122 // We still have to be careful though as many such headers were buggy and/or incomplete when
123 // first introduced, so we only check for headers that were fully featured from day 1, and then
124 // use that to infer the underlying GCC version:
128 #if __has_include(<memory_resource>)
129 # define BOOST_LIBSTDCXX_VERSION 90100
130 #elif __has_include(<charconv>)
131 # define BOOST_LIBSTDCXX_VERSION 80100
132 #elif __has_include(<variant>)
133 # define BOOST_LIBSTDCXX_VERSION 70100
134 #elif __has_include(<experimental/memory_resource>)
135 # define BOOST_LIBSTDCXX_VERSION 60100
136 #elif __has_include(<experimental/any>)
137 # define BOOST_LIBSTDCXX_VERSION 50100
138 #elif __has_include(<shared_mutex>)
139 # define BOOST_LIBSTDCXX_VERSION 40900
140 #elif __has_include(<ext/cmath>)
141 # define BOOST_LIBSTDCXX_VERSION 40800
142 #elif __has_include(<scoped_allocator>)
143 # define BOOST_LIBSTDCXX_VERSION 40700
144 #elif __has_include(<typeindex>)
145 # define BOOST_LIBSTDCXX_VERSION 40600
146 #elif __has_include(<future>)
147 # define BOOST_LIBSTDCXX_VERSION 40500
148 #elif __has_include(<ratio>)
149 # define BOOST_LIBSTDCXX_VERSION 40400
150 #elif __has_include(<array>)
151 # define BOOST_LIBSTDCXX_VERSION 40300
154 #if (BOOST_LIBSTDCXX_VERSION < 50100)
155 // libstdc++ does not define this function as it's deprecated in C++11, but clang still looks for it,
156 // defining it here is a terrible cludge, but should get things working:
157 extern "C" char *gets (char *__s);
160 // clang is unable to parse some GCC headers, add those workarounds here:
162 #if BOOST_LIBSTDCXX_VERSION < 50000
163 # define BOOST_NO_CXX11_HDR_REGEX
166 // GCC 4.7.x has no __cxa_thread_atexit which
167 // thread_local objects require for cleanup:
169 #if BOOST_LIBSTDCXX_VERSION < 40800
170 # define BOOST_NO_CXX11_THREAD_LOCAL
173 // Early clang versions can handle <chrono>, not exactly sure which versions
174 // but certainly up to clang-3.8 and gcc-4.6:
176 #if (__clang_major__ < 5)
177 # if BOOST_LIBSTDCXX_VERSION < 40800
178 # define BOOST_NO_CXX11_HDR_FUTURE
179 # define BOOST_NO_CXX11_HDR_MUTEX
180 # define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
181 # define BOOST_NO_CXX11_HDR_CHRONO
186 // GCC 4.8 and 9 add working versions of <atomic> and <regex> respectively.
187 // However, we have no test for these as the headers were present but broken
188 // in early GCC versions.
192 #if defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x5130) && (__cplusplus >= 201103L)
194 // Oracle Solaris compiler uses it's own verison of libstdc++ but doesn't
197 #if __SUNPRO_CC >= 0x5140
198 #define BOOST_LIBSTDCXX_VERSION 50100
200 #define BOOST_LIBSTDCXX_VERSION 40800
204 #if !defined(BOOST_LIBSTDCXX_VERSION)
205 # define BOOST_LIBSTDCXX_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
208 // std::auto_ptr isn't provided with _GLIBCXX_DEPRECATED=0 (GCC 4.5 and earlier)
209 // or _GLIBCXX_USE_DEPRECATED=0 (GCC 4.6 and later).
210 #if defined(BOOST_LIBSTDCXX11)
211 # if BOOST_LIBSTDCXX_VERSION < 40600
212 # if !_GLIBCXX_DEPRECATED
213 # define BOOST_NO_AUTO_PTR
215 # elif !_GLIBCXX_USE_DEPRECATED
216 # define BOOST_NO_AUTO_PTR
220 // C++0x headers in GCC 4.3.0 and later
222 #if (BOOST_LIBSTDCXX_VERSION < 40300) || !defined(BOOST_LIBSTDCXX11)
223 # define BOOST_NO_CXX11_HDR_ARRAY
224 # define BOOST_NO_CXX11_HDR_TUPLE
225 # define BOOST_NO_CXX11_HDR_UNORDERED_MAP
226 # define BOOST_NO_CXX11_HDR_UNORDERED_SET
227 # define BOOST_NO_CXX11_HDR_FUNCTIONAL
230 // C++0x headers in GCC 4.4.0 and later
232 #if (BOOST_LIBSTDCXX_VERSION < 40400) || !defined(BOOST_LIBSTDCXX11)
233 # define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
234 # define BOOST_NO_CXX11_HDR_FORWARD_LIST
235 # define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
236 # define BOOST_NO_CXX11_HDR_MUTEX
237 # define BOOST_NO_CXX11_HDR_RATIO
238 # define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
239 # define BOOST_NO_CXX11_SMART_PTR
240 # define BOOST_NO_CXX11_HDR_EXCEPTION
242 # define BOOST_HAS_TR1_COMPLEX_INVERSE_TRIG
243 # define BOOST_HAS_TR1_COMPLEX_OVERLOADS
246 // C++0x features in GCC 4.5.0 and later
248 #if (BOOST_LIBSTDCXX_VERSION < 40500) || !defined(BOOST_LIBSTDCXX11)
249 # define BOOST_NO_CXX11_NUMERIC_LIMITS
250 # define BOOST_NO_CXX11_HDR_FUTURE
251 # define BOOST_NO_CXX11_HDR_RANDOM
254 // C++0x features in GCC 4.6.0 and later
256 #if (BOOST_LIBSTDCXX_VERSION < 40600) || !defined(BOOST_LIBSTDCXX11)
257 # define BOOST_NO_CXX11_HDR_TYPEINDEX
258 # define BOOST_NO_CXX11_ADDRESSOF
259 # define BOOST_NO_CXX17_ITERATOR_TRAITS
262 // C++0x features in GCC 4.7.0 and later
264 #if (BOOST_LIBSTDCXX_VERSION < 40700) || !defined(BOOST_LIBSTDCXX11)
265 // Note that although <chrono> existed prior to 4.7, "steady_clock" is spelled "monotonic_clock"
266 // so 4.7.0 is the first truly conforming one.
267 # define BOOST_NO_CXX11_HDR_CHRONO
268 # define BOOST_NO_CXX11_ALLOCATOR
269 # define BOOST_NO_CXX11_POINTER_TRAITS
271 // C++0x features in GCC 4.8.0 and later
273 #if (BOOST_LIBSTDCXX_VERSION < 40800) || !defined(BOOST_LIBSTDCXX11)
274 // Note that although <atomic> existed prior to gcc 4.8 it was largely unimplemented for many types:
275 # define BOOST_NO_CXX11_HDR_ATOMIC
276 # define BOOST_NO_CXX11_HDR_THREAD
278 // C++0x features in GCC 4.9.0 and later
280 #if (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
281 // Although <regex> is present and compilable against, the actual implementation is not functional
282 // even for the simplest patterns such as "\d" or "[0-9]". This is the case at least in gcc up to 4.8, inclusively.
283 # define BOOST_NO_CXX11_HDR_REGEX
285 #if (BOOST_LIBSTDCXX_VERSION < 40900) || (__cplusplus <= 201103)
286 # define BOOST_NO_CXX14_STD_EXCHANGE
289 #if defined(__clang_major__) && ((__clang_major__ < 3) || ((__clang_major__ == 3) && (__clang_minor__ < 7)))
290 // As of clang-3.6, libstdc++ header <atomic> throws up errors with clang:
291 # define BOOST_NO_CXX11_HDR_ATOMIC
294 // C++0x features in GCC 5.1 and later
296 #if (BOOST_LIBSTDCXX_VERSION < 50100) || !defined(BOOST_LIBSTDCXX11)
297 # define BOOST_NO_CXX11_HDR_TYPE_TRAITS
298 # define BOOST_NO_CXX11_HDR_CODECVT
299 # define BOOST_NO_CXX11_ATOMIC_SMART_PTR
300 # define BOOST_NO_CXX11_STD_ALIGN
304 // C++17 features in GCC 7.1 and later
306 #if (BOOST_LIBSTDCXX_VERSION < 70100) || (__cplusplus <= 201402L)
307 # define BOOST_NO_CXX17_STD_INVOKE
308 # define BOOST_NO_CXX17_STD_APPLY
309 # define BOOST_NO_CXX17_HDR_OPTIONAL
310 # define BOOST_NO_CXX17_HDR_STRING_VIEW
311 # define BOOST_NO_CXX17_HDR_VARIANT
314 #if defined(__has_include)
315 #if !__has_include(<shared_mutex>)
316 # define BOOST_NO_CXX14_HDR_SHARED_MUTEX
317 #elif __cplusplus <= 201103
318 # define BOOST_NO_CXX14_HDR_SHARED_MUTEX
320 #elif __cplusplus < 201402 || (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
321 # define BOOST_NO_CXX14_HDR_SHARED_MUTEX
325 // Headers not present on Solaris with the Oracle compiler:
326 #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
327 #define BOOST_NO_CXX11_HDR_FUTURE
328 #define BOOST_NO_CXX11_HDR_FORWARD_LIST
329 #define BOOST_NO_CXX11_HDR_ATOMIC
330 // shared_ptr is present, but is not convertible to bool
331 // which causes all kinds of problems especially in Boost.Thread
332 // but probably elsewhere as well.
333 #define BOOST_NO_CXX11_SMART_PTR
336 #if (!defined(_GLIBCXX_HAS_GTHREADS) || !defined(_GLIBCXX_USE_C99_STDINT_TR1))
337 // Headers not always available:
338 # ifndef BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
339 # define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
341 # ifndef BOOST_NO_CXX11_HDR_MUTEX
342 # define BOOST_NO_CXX11_HDR_MUTEX
344 # ifndef BOOST_NO_CXX11_HDR_THREAD
345 # define BOOST_NO_CXX11_HDR_THREAD
347 # ifndef BOOST_NO_CXX14_HDR_SHARED_MUTEX
348 # define BOOST_NO_CXX14_HDR_SHARED_MUTEX
352 #if (!defined(_GTHREAD_USE_MUTEX_TIMEDLOCK) || (_GTHREAD_USE_MUTEX_TIMEDLOCK == 0)) && !defined(BOOST_NO_CXX11_HDR_MUTEX)
353 // Timed mutexes are not always available:
354 # define BOOST_NO_CXX11_HDR_MUTEX