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#if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
82# define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
83# define BOOST_HAS_SLIST
84# define BOOST_HAS_HASH
85# define BOOST_SLIST_HEADER <ext/slist>
86# if !defined(__GNUC__) || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
87# define BOOST_HASH_SET_HEADER <ext/hash_set>
88# define BOOST_HASH_MAP_HEADER <ext/hash_map>
89# else
90# define BOOST_HASH_SET_HEADER <backward/hash_set>
91# define BOOST_HASH_MAP_HEADER <backward/hash_map>
92# endif
93#endif
94
95//
96// Decide whether we have C++11 support turned on:
97//
98#if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103)
99# define BOOST_LIBSTDCXX11
100#endif
101
102//
103// Decide which version of libstdc++ we have, normally
104// libstdc++ C++0x support is detected via __GNUC__, __GNUC_MINOR__, and possibly
105// __GNUC_PATCHLEVEL__ at the suggestion of Jonathan Wakely, one of the libstdc++
106// developers. He also commented:
107//
108// "I'm not sure how useful __GLIBCXX__ is for your purposes, for instance in
109// GCC 4.2.4 it is set to 20080519 but in GCC 4.3.0 it is set to 20080305.
110// Although 4.3.0 was released earlier than 4.2.4, it has better C++0x support
111// than any release in the 4.2 series."
112//
113// Another resource for understanding libstdc++ features is:
114// http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#manual.intro.status.standard.200x
115//
116// However, using the GCC version number fails when the compiler is clang since this
117// only ever claims to emulate GCC-4.2, see https://svn.boost.org/trac/boost/ticket/7473
118// for a long discussion on this issue. What we can do though is use clang's __has_include
119// to detect the presence of a C++11 header that was introduced with a specific GCC release.
120// We still have to be careful though as many such headers were buggy and/or incomplete when
121// first introduced, so we only check for headers that were fully featured from day 1, and then
122// use that to infer the underlying GCC version:
123//
124#ifdef __clang__
125
126#if __has_include(<experimental/memory_resource>)
127# define BOOST_LIBSTDCXX_VERSION 60100
128#elif __has_include(<experimental/any>)
129# define BOOST_LIBSTDCXX_VERSION 50100
130#elif __has_include(<shared_mutex>)
131# define BOOST_LIBSTDCXX_VERSION 40900
132#elif __has_include(<ext/cmath>)
133# define BOOST_LIBSTDCXX_VERSION 40800
134#elif __has_include(<scoped_allocator>)
135# define BOOST_LIBSTDCXX_VERSION 40700
136#elif __has_include(<typeindex>)
137# define BOOST_LIBSTDCXX_VERSION 40600
138#elif __has_include(<future>)
139# define BOOST_LIBSTDCXX_VERSION 40500
140#elif __has_include(<ratio>)
141# define BOOST_LIBSTDCXX_VERSION 40400
142#elif __has_include(<array>)
143# define BOOST_LIBSTDCXX_VERSION 40300
144#endif
145
146#if (BOOST_LIBSTDCXX_VERSION < 50100)
147// libstdc++ does not define this function as it's deprecated in C++11, but clang still looks for it,
148// defining it here is a terrible cludge, but should get things working:
149extern "C" char *gets (char *__s);
150#endif
151//
152// clang is unable to parse some GCC headers, add those workarounds here:
153//
154#if BOOST_LIBSTDCXX_VERSION < 50000
155# define BOOST_NO_CXX11_HDR_REGEX
156#endif
157//
158// GCC 4.7.x has no __cxa_thread_atexit which
159// thread_local objects require for cleanup:
160//
161#if BOOST_LIBSTDCXX_VERSION < 40800
162# define BOOST_NO_CXX11_THREAD_LOCAL
163#endif
164//
165// Early clang versions can handle <chrono>, not exactly sure which versions
166// but certainly up to clang-3.8 and gcc-4.6:
167//
168#if (__clang_major__ < 5)
169# if BOOST_LIBSTDCXX_VERSION < 40800
170# define BOOST_NO_CXX11_HDR_FUTURE
171# define BOOST_NO_CXX11_HDR_MUTEX
172# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
173# define BOOST_NO_CXX11_HDR_CHRONO
174# endif
175#endif
176
177//
178// GCC 4.8 and 9 add working versions of <atomic> and <regex> respectively.
179// However, we have no test for these as the headers were present but broken
180// in early GCC versions.
181//
182#endif
183
184#if defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x5130) && (__cplusplus >= 201103L)
185//
186// Oracle Solaris compiler uses it's own verison of libstdc++ but doesn't
187// set __GNUC__
188//
189#if __SUNPRO_CC >= 0x5140
190#define BOOST_LIBSTDCXX_VERSION 50100
191#else
192#define BOOST_LIBSTDCXX_VERSION 40800
193#endif
194#endif
195
196#if !defined(BOOST_LIBSTDCXX_VERSION)
197# define BOOST_LIBSTDCXX_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
198#endif
199
200// std::auto_ptr isn't provided with _GLIBCXX_DEPRECATED=0 (GCC 4.5 and earlier)
201// or _GLIBCXX_USE_DEPRECATED=0 (GCC 4.6 and later).
202#if defined(BOOST_LIBSTDCXX11)
203# if BOOST_LIBSTDCXX_VERSION < 40600
204# if !_GLIBCXX_DEPRECATED
205# define BOOST_NO_AUTO_PTR
206# endif
207# elif !_GLIBCXX_USE_DEPRECATED
208# define BOOST_NO_AUTO_PTR
209# endif
210#endif
211
212// C++0x headers in GCC 4.3.0 and later
213//
214#if (BOOST_LIBSTDCXX_VERSION < 40300) || !defined(BOOST_LIBSTDCXX11)
215# define BOOST_NO_CXX11_HDR_ARRAY
216# define BOOST_NO_CXX11_HDR_TUPLE
217# define BOOST_NO_CXX11_HDR_UNORDERED_MAP
218# define BOOST_NO_CXX11_HDR_UNORDERED_SET
219# define BOOST_NO_CXX11_HDR_FUNCTIONAL
220#endif
221
222// C++0x headers in GCC 4.4.0 and later
223//
224#if (BOOST_LIBSTDCXX_VERSION < 40400) || !defined(BOOST_LIBSTDCXX11)
225# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
226# define BOOST_NO_CXX11_HDR_FORWARD_LIST
227# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
228# define BOOST_NO_CXX11_HDR_MUTEX
229# define BOOST_NO_CXX11_HDR_RATIO
230# define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
231# define BOOST_NO_CXX11_SMART_PTR
232#else
233# define BOOST_HAS_TR1_COMPLEX_INVERSE_TRIG
234# define BOOST_HAS_TR1_COMPLEX_OVERLOADS
235#endif
236
237// C++0x features in GCC 4.5.0 and later
238//
239#if (BOOST_LIBSTDCXX_VERSION < 40500) || !defined(BOOST_LIBSTDCXX11)
240# define BOOST_NO_CXX11_NUMERIC_LIMITS
241# define BOOST_NO_CXX11_HDR_FUTURE
242# define BOOST_NO_CXX11_HDR_RANDOM
243#endif
244
245// C++0x features in GCC 4.6.0 and later
246//
247#if (BOOST_LIBSTDCXX_VERSION < 40600) || !defined(BOOST_LIBSTDCXX11)
248# define BOOST_NO_CXX11_HDR_TYPEINDEX
249# define BOOST_NO_CXX11_ADDRESSOF
250#endif
251
252// C++0x features in GCC 4.7.0 and later
253//
254#if (BOOST_LIBSTDCXX_VERSION < 40700) || !defined(BOOST_LIBSTDCXX11)
255// Note that although <chrono> existed prior to 4.7, "steady_clock" is spelled "monotonic_clock"
256// so 4.7.0 is the first truly conforming one.
257# define BOOST_NO_CXX11_HDR_CHRONO
258# define BOOST_NO_CXX11_ALLOCATOR
259# define BOOST_NO_CXX11_POINTER_TRAITS
260#endif
261// C++0x features in GCC 4.8.0 and later
262//
263#if (BOOST_LIBSTDCXX_VERSION < 40800) || !defined(BOOST_LIBSTDCXX11)
264// Note that although <atomic> existed prior to gcc 4.8 it was largely unimplemented for many types:
265# define BOOST_NO_CXX11_HDR_ATOMIC
266# define BOOST_NO_CXX11_HDR_THREAD
267#endif
268// C++0x features in GCC 4.9.0 and later
269//
270#if (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
271// Although <regex> is present and compilable against, the actual implementation is not functional
272// even for the simplest patterns such as "\d" or "[0-9]". This is the case at least in gcc up to 4.8, inclusively.
273# define BOOST_NO_CXX11_HDR_REGEX
274#endif
275#if (BOOST_LIBSTDCXX_VERSION < 40900) || (__cplusplus <= 201103)
276# define BOOST_NO_CXX14_STD_EXCHANGE
277#endif
278
279#if defined(__clang_major__) && ((__clang_major__ < 3) || ((__clang_major__ == 3) && (__clang_minor__ < 7)))
280// As of clang-3.6, libstdc++ header <atomic> throws up errors with clang:
281# define BOOST_NO_CXX11_HDR_ATOMIC
282#endif
283//
284// C++0x features in GCC 5.1 and later
285//
286#if (BOOST_LIBSTDCXX_VERSION < 50100) || !defined(BOOST_LIBSTDCXX11)
287# define BOOST_NO_CXX11_HDR_TYPE_TRAITS
288# define BOOST_NO_CXX11_HDR_CODECVT
289# define BOOST_NO_CXX11_ATOMIC_SMART_PTR
290# define BOOST_NO_CXX11_STD_ALIGN
291#endif
292
293//
294// C++17 features in GCC 6.1 and later
295//
296#if (BOOST_LIBSTDCXX_VERSION < 60100) || (__cplusplus <= 201402L)
297# define BOOST_NO_CXX17_STD_INVOKE
298#endif
299#if (BOOST_LIBSTDCXX_VERSION < 70100) || (__cplusplus <= 201402L)
300# define BOOST_NO_CXX17_STD_APPLY
301#endif
302
303#if defined(__has_include)
304#if !__has_include(<shared_mutex>)
305# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
306#elif __cplusplus <= 201103
307# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
308#endif
309#elif __cplusplus < 201402 || (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
310# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
311#endif
312
313//
314// Headers not present on Solaris with the Oracle compiler:
315#if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)
316#define BOOST_NO_CXX11_HDR_FUTURE
317#define BOOST_NO_CXX11_HDR_FORWARD_LIST
318#define BOOST_NO_CXX11_HDR_ATOMIC
319// shared_ptr is present, but is not convertible to bool
320// which causes all kinds of problems especially in Boost.Thread
321// but probably elsewhere as well.
322#define BOOST_NO_CXX11_SMART_PTR
323#endif
324
325#if (!defined(_GLIBCXX_HAS_GTHREADS) || !defined(_GLIBCXX_USE_C99_STDINT_TR1))
326 // Headers not always available:
327# ifndef BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
328# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
329# endif
330# ifndef BOOST_NO_CXX11_HDR_MUTEX
331# define BOOST_NO_CXX11_HDR_MUTEX
332# endif
333# ifndef BOOST_NO_CXX11_HDR_THREAD
334# define BOOST_NO_CXX11_HDR_THREAD
335# endif
336# ifndef BOOST_NO_CXX14_HDR_SHARED_MUTEX
337# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
338# endif
339#endif
340
341#if (!defined(_GTHREAD_USE_MUTEX_TIMEDLOCK) || (_GTHREAD_USE_MUTEX_TIMEDLOCK == 0)) && !defined(BOOST_NO_CXX11_HDR_MUTEX)
342// Timed mutexes are not always available:
343# define BOOST_NO_CXX11_HDR_MUTEX
344#endif
345
346// --- end ---
347