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)
6
7// See http://www.boost.org for most recent version.
8
9// config for libstdc++ v3
10// not much to go in here:
11
12#define BOOST_GNU_STDLIB 1
13
14#ifdef __GLIBCXX__
15#define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCXX__)
16#else
17#define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCPP__)
18#endif
19
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
25#endif
26
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.
31# define _REENTRANT
32#endif
33
34#ifdef __GLIBCXX__ // gcc 3.4 and greater:
35# if defined(_GLIBCXX_HAVE_GTHR_DEFAULT) \
36 || defined(_GLIBCXX__PTHREADS) \
37 || defined(_GLIBCXX_HAS_GTHREADS) \
38 || defined(_WIN32) \
39 || defined(_AIX) \
40 || defined(__HAIKU__)
41 //
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...
45 //
46# define BOOST_HAS_THREADS
47# else
48# define BOOST_DISABLE_THREADS
49# endif
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
55#endif
56
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
61#endif
62
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
69#endif
70
71// Apple doesn't seem to reliably defined a *unix* macro
72#if !defined(CYGWIN) && ( defined(__unix__) \
73 || defined(__unix) \
74 || defined(unix) \
75 || defined(__APPLE__) \
76 || defined(__APPLE) \
77 || defined(APPLE))
78# include <unistd.h>
79#endif
80
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>
90# else
91# define BOOST_HASH_SET_HEADER <backward/hash_set>
92# define BOOST_HASH_MAP_HEADER <backward/hash_map>
93# endif
94#endif
95#endif
96
97//
98// Decide whether we have C++11 support turned on:
99//
100#if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103)
101# define BOOST_LIBSTDCXX11
102#endif
103
104//
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:
109//
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."
114//
115// Another resource for understanding libstdc++ features is:
116// http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#manual.intro.status.standard.200x
117//
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:
125//
126#ifdef __clang__
127
128#if __has_include(<experimental/memory_resource>)
129# define BOOST_LIBSTDCXX_VERSION 60100
130#elif __has_include(<experimental/any>)
131# define BOOST_LIBSTDCXX_VERSION 50100
132#elif __has_include(<shared_mutex>)
133# define BOOST_LIBSTDCXX_VERSION 40900
134#elif __has_include(<ext/cmath>)
135# define BOOST_LIBSTDCXX_VERSION 40800
136#elif __has_include(<scoped_allocator>)
137# define BOOST_LIBSTDCXX_VERSION 40700
138#elif __has_include(<typeindex>)
139# define BOOST_LIBSTDCXX_VERSION 40600
140#elif __has_include(<future>)
141# define BOOST_LIBSTDCXX_VERSION 40500
142#elif __has_include(<ratio>)
143# define BOOST_LIBSTDCXX_VERSION 40400
144#elif __has_include(<array>)
145# define BOOST_LIBSTDCXX_VERSION 40300
146#endif
147
148#if (BOOST_LIBSTDCXX_VERSION < 50100)
149// libstdc++ does not define this function as it's deprecated in C++11, but clang still looks for it,
150// defining it here is a terrible cludge, but should get things working:
151extern "C" char *gets (char *__s);
152#endif
153//
154// clang is unable to parse some GCC headers, add those workarounds here:
155//
156#if BOOST_LIBSTDCXX_VERSION < 50000
157# define BOOST_NO_CXX11_HDR_REGEX
158#endif
159//
160// GCC 4.7.x has no __cxa_thread_atexit which
161// thread_local objects require for cleanup:
162//
163#if BOOST_LIBSTDCXX_VERSION < 40800
164# define BOOST_NO_CXX11_THREAD_LOCAL
165#endif
166//
167// Early clang versions can handle <chrono>, not exactly sure which versions
168// but certainly up to clang-3.8 and gcc-4.6:
169//
170#if (__clang_major__ < 5)
171# if BOOST_LIBSTDCXX_VERSION < 40800
172# define BOOST_NO_CXX11_HDR_FUTURE
173# define BOOST_NO_CXX11_HDR_MUTEX
174# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
175# define BOOST_NO_CXX11_HDR_CHRONO
176# endif
177#endif
178
179//
180// GCC 4.8 and 9 add working versions of <atomic> and <regex> respectively.
181// However, we have no test for these as the headers were present but broken
182// in early GCC versions.
183//
184#endif
185
186#if defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x5130) && (__cplusplus >= 201103L)
187//
188// Oracle Solaris compiler uses it's own verison of libstdc++ but doesn't
189// set __GNUC__
190//
191#if __SUNPRO_CC >= 0x5140
192#define BOOST_LIBSTDCXX_VERSION 50100
193#else
194#define BOOST_LIBSTDCXX_VERSION 40800
195#endif
196#endif
197
198#if !defined(BOOST_LIBSTDCXX_VERSION)
199# define BOOST_LIBSTDCXX_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
200#endif
201
202// std::auto_ptr isn't provided with _GLIBCXX_DEPRECATED=0 (GCC 4.5 and earlier)
203// or _GLIBCXX_USE_DEPRECATED=0 (GCC 4.6 and later).
204#if defined(BOOST_LIBSTDCXX11)
205# if BOOST_LIBSTDCXX_VERSION < 40600
206# if !_GLIBCXX_DEPRECATED
207# define BOOST_NO_AUTO_PTR
208# endif
209# elif !_GLIBCXX_USE_DEPRECATED
210# define BOOST_NO_AUTO_PTR
211# endif
212#endif
213
214// C++0x headers in GCC 4.3.0 and later
215//
216#if (BOOST_LIBSTDCXX_VERSION < 40300) || !defined(BOOST_LIBSTDCXX11)
217# define BOOST_NO_CXX11_HDR_ARRAY
218# define BOOST_NO_CXX11_HDR_TUPLE
219# define BOOST_NO_CXX11_HDR_UNORDERED_MAP
220# define BOOST_NO_CXX11_HDR_UNORDERED_SET
221# define BOOST_NO_CXX11_HDR_FUNCTIONAL
222#endif
223
224// C++0x headers in GCC 4.4.0 and later
225//
226#if (BOOST_LIBSTDCXX_VERSION < 40400) || !defined(BOOST_LIBSTDCXX11)
227# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
228# define BOOST_NO_CXX11_HDR_FORWARD_LIST
229# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
230# define BOOST_NO_CXX11_HDR_MUTEX
231# define BOOST_NO_CXX11_HDR_RATIO
232# define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
233# define BOOST_NO_CXX11_SMART_PTR
234#else
235# define BOOST_HAS_TR1_COMPLEX_INVERSE_TRIG
236# define BOOST_HAS_TR1_COMPLEX_OVERLOADS
237#endif
238
239// C++0x features in GCC 4.5.0 and later
240//
241#if (BOOST_LIBSTDCXX_VERSION < 40500) || !defined(BOOST_LIBSTDCXX11)
242# define BOOST_NO_CXX11_NUMERIC_LIMITS
243# define BOOST_NO_CXX11_HDR_FUTURE
244# define BOOST_NO_CXX11_HDR_RANDOM
245#endif
246
247// C++0x features in GCC 4.6.0 and later
248//
249#if (BOOST_LIBSTDCXX_VERSION < 40600) || !defined(BOOST_LIBSTDCXX11)
250# define BOOST_NO_CXX11_HDR_TYPEINDEX
251# define BOOST_NO_CXX11_ADDRESSOF
252# define BOOST_NO_CXX17_ITERATOR_TRAITS
253#endif
254
255// C++0x features in GCC 4.7.0 and later
256//
257#if (BOOST_LIBSTDCXX_VERSION < 40700) || !defined(BOOST_LIBSTDCXX11)
258// Note that although <chrono> existed prior to 4.7, "steady_clock" is spelled "monotonic_clock"
259// so 4.7.0 is the first truly conforming one.
260# define BOOST_NO_CXX11_HDR_CHRONO
261# define BOOST_NO_CXX11_ALLOCATOR
262# define BOOST_NO_CXX11_POINTER_TRAITS
263#endif
264// C++0x features in GCC 4.8.0 and later
265//
266#if (BOOST_LIBSTDCXX_VERSION < 40800) || !defined(BOOST_LIBSTDCXX11)
267// Note that although <atomic> existed prior to gcc 4.8 it was largely unimplemented for many types:
268# define BOOST_NO_CXX11_HDR_ATOMIC
269# define BOOST_NO_CXX11_HDR_THREAD
270#endif
271// C++0x features in GCC 4.9.0 and later
272//
273#if (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
274// Although <regex> is present and compilable against, the actual implementation is not functional
275// even for the simplest patterns such as "\d" or "[0-9]". This is the case at least in gcc up to 4.8, inclusively.
276# define BOOST_NO_CXX11_HDR_REGEX
277#endif
278#if (BOOST_LIBSTDCXX_VERSION < 40900) || (__cplusplus <= 201103)
279# define BOOST_NO_CXX14_STD_EXCHANGE
280#endif
281
282#if defined(__clang_major__) && ((__clang_major__ < 3) || ((__clang_major__ == 3) && (__clang_minor__ < 7)))
283// As of clang-3.6, libstdc++ header <atomic> throws up errors with clang:
284# define BOOST_NO_CXX11_HDR_ATOMIC
285#endif
286//
287// C++0x features in GCC 5.1 and later
288//
289#if (BOOST_LIBSTDCXX_VERSION < 50100) || !defined(BOOST_LIBSTDCXX11)
290# define BOOST_NO_CXX11_HDR_TYPE_TRAITS
291# define BOOST_NO_CXX11_HDR_CODECVT
292# define BOOST_NO_CXX11_ATOMIC_SMART_PTR
293# define BOOST_NO_CXX11_STD_ALIGN
294#endif
295
296//
297// C++17 features in GCC 6.1 and later
298//
299#if (BOOST_LIBSTDCXX_VERSION < 60100) || (__cplusplus <= 201402L)
300# define BOOST_NO_CXX17_STD_INVOKE
301#endif
302#if (BOOST_LIBSTDCXX_VERSION < 70100) || (__cplusplus <= 201402L)
303# define BOOST_NO_CXX17_STD_APPLY
304#endif
305
306#if defined(__has_include)
307#if !__has_include(<shared_mutex>)
308# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
309#elif __cplusplus <= 201103
310# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
311#endif
312#elif __cplusplus < 201402 || (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
313# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
314#endif
315
316//
317// Headers not present on Solaris with the Oracle compiler:
318#if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
319#define BOOST_NO_CXX11_HDR_FUTURE
320#define BOOST_NO_CXX11_HDR_FORWARD_LIST
321#define BOOST_NO_CXX11_HDR_ATOMIC
322// shared_ptr is present, but is not convertible to bool
323// which causes all kinds of problems especially in Boost.Thread
324// but probably elsewhere as well.
325#define BOOST_NO_CXX11_SMART_PTR
326#endif
327
328#if (!defined(_GLIBCXX_HAS_GTHREADS) || !defined(_GLIBCXX_USE_C99_STDINT_TR1))
329 // Headers not always available:
330# ifndef BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
331# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
332# endif
333# ifndef BOOST_NO_CXX11_HDR_MUTEX
334# define BOOST_NO_CXX11_HDR_MUTEX
335# endif
336# ifndef BOOST_NO_CXX11_HDR_THREAD
337# define BOOST_NO_CXX11_HDR_THREAD
338# endif
339# ifndef BOOST_NO_CXX14_HDR_SHARED_MUTEX
340# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
341# endif
342#endif
343
344#if (!defined(_GTHREAD_USE_MUTEX_TIMEDLOCK) || (_GTHREAD_USE_MUTEX_TIMEDLOCK == 0)) && !defined(BOOST_NO_CXX11_HDR_MUTEX)
345// Timed mutexes are not always available:
346# define BOOST_NO_CXX11_HDR_MUTEX
347#endif
348
349// --- end ---
350