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4** Copyright (C) 2016 Intel Corporation.
5** Contact: https://www.qt.io/licensing/
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9** $QT_BEGIN_LICENSE:LGPL$
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21** Foundation and appearing in the file LICENSE.LGPL3 included in the
22** packaging of this file. Please review the following information to
23** ensure the GNU Lesser General Public License version 3 requirements
24** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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39****************************************************************************/
40
41#ifndef QGLOBAL_H
42# include <QtCore/qglobal.h>
43#endif
44
45#ifndef QCOMPILERDETECTION_H
46#define QCOMPILERDETECTION_H
47
48/*
49 The compiler, must be one of: (Q_CC_x)
50
51 SYM - Digital Mars C/C++ (used to be Symantec C++)
52 MSVC - Microsoft Visual C/C++, Intel C++ for Windows
53 BOR - Borland/Turbo C++
54 WAT - Watcom C++
55 GNU - GNU C++
56 COMEAU - Comeau C++
57 EDG - Edison Design Group C++
58 OC - CenterLine C++
59 SUN - Forte Developer, or Sun Studio C++
60 MIPS - MIPSpro C++
61 DEC - DEC C++
62 HPACC - HP aC++
63 USLC - SCO OUDK and UDK
64 CDS - Reliant C++
65 KAI - KAI C++
66 INTEL - Intel C++ for Linux, Intel C++ for Windows
67 HIGHC - MetaWare High C/C++
68 PGI - Portland Group C++
69 GHS - Green Hills Optimizing C++ Compilers
70 RVCT - ARM Realview Compiler Suite
71 CLANG - C++ front-end for the LLVM compiler
72
73
74 Should be sorted most to least authoritative.
75*/
76
77/* Symantec C++ is now Digital Mars */
78#if defined(__DMC__) || defined(__SC__)
79# define Q_CC_SYM
80/* "explicit" semantics implemented in 8.1e but keyword recognized since 7.5 */
81# if defined(__SC__) && __SC__ < 0x750
82# error "Compiler not supported"
83# endif
84
85#elif defined(_MSC_VER)
86# ifdef __clang__
87# define Q_CC_CLANG ((__clang_major__ * 100) + __clang_minor__)
88# endif
89# define Q_CC_MSVC (_MSC_VER)
90# define Q_CC_MSVC_NET
91# define Q_OUTOFLINE_TEMPLATE inline
92# define Q_COMPILER_MANGLES_RETURN_TYPE
93# define Q_FUNC_INFO __FUNCSIG__
94# define Q_ASSUME_IMPL(expr) __assume(expr)
95# define Q_UNREACHABLE_IMPL() __assume(0)
96# define Q_NORETURN __declspec(noreturn)
97# define Q_DECL_DEPRECATED __declspec(deprecated)
98# ifndef Q_CC_CLANG
99# define Q_DECL_DEPRECATED_X(text) __declspec(deprecated(text))
100# endif
101# define Q_DECL_EXPORT __declspec(dllexport)
102# define Q_DECL_IMPORT __declspec(dllimport)
103# define QT_MAKE_UNCHECKED_ARRAY_ITERATOR(x) stdext::make_unchecked_array_iterator(x) // Since _MSC_VER >= 1800
104# define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) stdext::make_checked_array_iterator(x, size_t(N)) // Since _MSC_VER >= 1500
105/* Intel C++ disguising as Visual C++: the `using' keyword avoids warnings */
106# if defined(__INTEL_COMPILER)
107# define Q_DECL_VARIABLE_DEPRECATED
108# define Q_CC_INTEL __INTEL_COMPILER
109# endif
110
111#elif defined(__BORLANDC__) || defined(__TURBOC__)
112# define Q_CC_BOR
113# define Q_INLINE_TEMPLATE
114# if __BORLANDC__ < 0x502
115# error "Compiler not supported"
116# endif
117
118#elif defined(__WATCOMC__)
119# define Q_CC_WAT
120
121/* ARM Realview Compiler Suite
122 RVCT compiler also defines __EDG__ and __GNUC__ (if --gnu flag is given),
123 so check for it before that */
124#elif defined(__ARMCC__) || defined(__CC_ARM)
125# define Q_CC_RVCT
126/* work-around for missing compiler intrinsics */
127# define __is_empty(X) false
128# define __is_pod(X) false
129# define Q_DECL_DEPRECATED __attribute__ ((__deprecated__))
130# ifdef Q_OS_LINUX
131# define Q_DECL_EXPORT __attribute__((visibility("default")))
132# define Q_DECL_IMPORT __attribute__((visibility("default")))
133# define Q_DECL_HIDDEN __attribute__((visibility("hidden")))
134# else
135# define Q_DECL_EXPORT __declspec(dllexport)
136# define Q_DECL_IMPORT __declspec(dllimport)
137# endif
138
139#elif defined(__GNUC__)
140# define Q_CC_GNU (__GNUC__ * 100 + __GNUC_MINOR__)
141# if defined(__MINGW32__)
142# define Q_CC_MINGW
143# endif
144# if defined(__INTEL_COMPILER)
145/* Intel C++ also masquerades as GCC */
146# define Q_CC_INTEL (__INTEL_COMPILER)
147# ifdef __clang__
148/* Intel C++ masquerades as Clang masquerading as GCC */
149# define Q_CC_CLANG 305
150# endif
151# define Q_ASSUME_IMPL(expr) __assume(expr)
152# define Q_UNREACHABLE_IMPL() __builtin_unreachable()
153# if __INTEL_COMPILER >= 1300 && !defined(__APPLE__)
154# define Q_DECL_DEPRECATED_X(text) __attribute__ ((__deprecated__(text)))
155# endif
156# elif defined(__clang__)
157/* Clang also masquerades as GCC */
158# if defined(__apple_build_version__)
159# /* http://en.wikipedia.org/wiki/Xcode#Toolchain_Versions */
160# if __apple_build_version__ >= 8020041
161# define Q_CC_CLANG 309
162# elif __apple_build_version__ >= 8000038
163# define Q_CC_CLANG 308
164# elif __apple_build_version__ >= 7000053
165# define Q_CC_CLANG 306
166# elif __apple_build_version__ >= 6000051
167# define Q_CC_CLANG 305
168# elif __apple_build_version__ >= 5030038
169# define Q_CC_CLANG 304
170# elif __apple_build_version__ >= 5000275
171# define Q_CC_CLANG 303
172# elif __apple_build_version__ >= 4250024
173# define Q_CC_CLANG 302
174# elif __apple_build_version__ >= 3180045
175# define Q_CC_CLANG 301
176# elif __apple_build_version__ >= 2111001
177# define Q_CC_CLANG 300
178# else
179# error "Unknown Apple Clang version"
180# endif
181# else
182# define Q_CC_CLANG ((__clang_major__ * 100) + __clang_minor__)
183# endif
184# if __has_builtin(__builtin_assume)
185# define Q_ASSUME_IMPL(expr) __builtin_assume(expr)
186# else
187# define Q_ASSUME_IMPL(expr) if (expr){} else __builtin_unreachable()
188# endif
189# define Q_UNREACHABLE_IMPL() __builtin_unreachable()
190# if !defined(__has_extension)
191# /* Compatibility with older Clang versions */
192# define __has_extension __has_feature
193# endif
194# if defined(__APPLE__)
195 /* Apple/clang specific features */
196# define Q_DECL_CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
197# ifdef __OBJC__
198# define Q_DECL_NS_RETURNS_AUTORELEASED __attribute__((ns_returns_autoreleased))
199# endif
200# endif
201# ifdef __EMSCRIPTEN__
202# define Q_CC_EMSCRIPTEN
203# endif
204# else
205/* Plain GCC */
206# if Q_CC_GNU >= 405
207# define Q_ASSUME_IMPL(expr) if (expr){} else __builtin_unreachable()
208# define Q_UNREACHABLE_IMPL() __builtin_unreachable()
209# define Q_DECL_DEPRECATED_X(text) __attribute__ ((__deprecated__(text)))
210# endif
211# endif
212
213# ifdef Q_OS_WIN
214# define Q_DECL_EXPORT __declspec(dllexport)
215# define Q_DECL_IMPORT __declspec(dllimport)
216# elif defined(QT_VISIBILITY_AVAILABLE)
217# define Q_DECL_EXPORT __attribute__((visibility("default")))
218# define Q_DECL_IMPORT __attribute__((visibility("default")))
219# define Q_DECL_HIDDEN __attribute__((visibility("hidden")))
220# endif
221
222# define Q_FUNC_INFO __PRETTY_FUNCTION__
223# define Q_TYPEOF(expr) __typeof__(expr)
224# define Q_DECL_DEPRECATED __attribute__ ((__deprecated__))
225# define Q_DECL_UNUSED __attribute__((__unused__))
226# define Q_LIKELY(expr) __builtin_expect(!!(expr), true)
227# define Q_UNLIKELY(expr) __builtin_expect(!!(expr), false)
228# define Q_NORETURN __attribute__((__noreturn__))
229# define Q_REQUIRED_RESULT __attribute__ ((__warn_unused_result__))
230# define Q_DECL_PURE_FUNCTION __attribute__((pure))
231# define Q_DECL_CONST_FUNCTION __attribute__((const))
232# define Q_DECL_COLD_FUNCTION __attribute__((cold))
233# if !defined(QT_MOC_CPP)
234# define Q_PACKED __attribute__ ((__packed__))
235# ifndef __ARM_EABI__
236# define QT_NO_ARM_EABI
237# endif
238# endif
239# if Q_CC_GNU >= 403 && !defined(Q_CC_CLANG)
240# define Q_ALLOC_SIZE(x) __attribute__((alloc_size(x)))
241# endif
242
243/* IBM compiler versions are a bit messy. There are actually two products:
244 the C product, and the C++ product. The C++ compiler is always packaged
245 with the latest version of the C compiler. Version numbers do not always
246 match. This little table (I'm not sure it's accurate) should be helpful:
247
248 C++ product C product
249
250 C Set 3.1 C Compiler 3.0
251 ... ...
252 C++ Compiler 3.6.6 C Compiler 4.3
253 ... ...
254 Visual Age C++ 4.0 ...
255 ... ...
256 Visual Age C++ 5.0 C Compiler 5.0
257 ... ...
258 Visual Age C++ 6.0 C Compiler 6.0
259
260 Now:
261 __xlC__ is the version of the C compiler in hexadecimal notation
262 is only an approximation of the C++ compiler version
263 __IBMCPP__ is the version of the C++ compiler in decimal notation
264 but it is not defined on older compilers like C Set 3.1 */
265#elif defined(__xlC__)
266# define Q_CC_XLC
267# define Q_FULL_TEMPLATE_INSTANTIATION
268# if __xlC__ < 0x400
269# error "Compiler not supported"
270# elif __xlC__ >= 0x0600
271# define Q_TYPEOF(expr) __typeof__(expr)
272# define Q_PACKED __attribute__((__packed__))
273# endif
274
275/* Older versions of DEC C++ do not define __EDG__ or __EDG - observed
276 on DEC C++ V5.5-004. New versions do define __EDG__ - observed on
277 Compaq C++ V6.3-002.
278 This compiler is different enough from other EDG compilers to handle
279 it separately anyway. */
280#elif defined(__DECCXX) || defined(__DECC)
281# define Q_CC_DEC
282/* Compaq C++ V6 compilers are EDG-based but I'm not sure about older
283 DEC C++ V5 compilers. */
284# if defined(__EDG__)
285# define Q_CC_EDG
286# endif
287/* Compaq has disabled EDG's _BOOL macro and uses _BOOL_EXISTS instead
288 - observed on Compaq C++ V6.3-002.
289 In any case versions prior to Compaq C++ V6.0-005 do not have bool. */
290# if !defined(_BOOL_EXISTS)
291# error "Compiler not supported"
292# endif
293/* Spurious (?) error messages observed on Compaq C++ V6.5-014. */
294/* Apply to all versions prior to Compaq C++ V6.0-000 - observed on
295 DEC C++ V5.5-004. */
296# if __DECCXX_VER < 60060000
297# define Q_BROKEN_TEMPLATE_SPECIALIZATION
298# endif
299/* avoid undefined symbol problems with out-of-line template members */
300# define Q_OUTOFLINE_TEMPLATE inline
301
302/* The Portland Group C++ compiler is based on EDG and does define __EDG__
303 but the C compiler does not */
304#elif defined(__PGI)
305# define Q_CC_PGI
306# if defined(__EDG__)
307# define Q_CC_EDG
308# endif
309
310/* Compilers with EDG front end are similar. To detect them we test:
311 __EDG documented by SGI, observed on MIPSpro 7.3.1.1 and KAI C++ 4.0b
312 __EDG__ documented in EDG online docs, observed on Compaq C++ V6.3-002
313 and PGI C++ 5.2-4 */
314#elif !defined(Q_OS_HPUX) && (defined(__EDG) || defined(__EDG__))
315# define Q_CC_EDG
316/* From the EDG documentation (does not seem to apply to Compaq C++ or GHS C):
317 _BOOL
318 Defined in C++ mode when bool is a keyword. The name of this
319 predefined macro is specified by a configuration flag. _BOOL
320 is the default.
321 __BOOL_DEFINED
322 Defined in Microsoft C++ mode when bool is a keyword. */
323# if !defined(_BOOL) && !defined(__BOOL_DEFINED) && !defined(__ghs)
324# error "Compiler not supported"
325# endif
326
327/* The Comeau compiler is based on EDG and does define __EDG__ */
328# if defined(__COMO__)
329# define Q_CC_COMEAU
330
331/* The `using' keyword was introduced to avoid KAI C++ warnings
332 but it's now causing KAI C++ errors instead. The standard is
333 unclear about the use of this keyword, and in practice every
334 compiler is using its own set of rules. Forget it. */
335# elif defined(__KCC)
336# define Q_CC_KAI
337
338/* Using the `using' keyword avoids Intel C++ for Linux warnings */
339# elif defined(__INTEL_COMPILER)
340# define Q_CC_INTEL (__INTEL_COMPILER)
341
342/* Uses CFront, make sure to read the manual how to tweak templates. */
343# elif defined(__ghs)
344# define Q_CC_GHS
345# define Q_DECL_DEPRECATED __attribute__ ((__deprecated__))
346# define Q_PACKED __attribute__ ((__packed__))
347# define Q_FUNC_INFO __PRETTY_FUNCTION__
348# define Q_TYPEOF(expr) __typeof__(expr)
349# define Q_UNREACHABLE_IMPL()
350# if defined(__cplusplus)
351# define Q_COMPILER_AUTO_TYPE
352# define Q_COMPILER_STATIC_ASSERT
353# define Q_COMPILER_RANGE_FOR
354# if __GHS_VERSION_NUMBER >= 201505
355# define Q_COMPILER_ALIGNAS
356# define Q_COMPILER_ALIGNOF
357# define Q_COMPILER_ATOMICS
358# define Q_COMPILER_ATTRIBUTES
359# define Q_COMPILER_AUTO_FUNCTION
360# define Q_COMPILER_CLASS_ENUM
361# define Q_COMPILER_DECLTYPE
362# define Q_COMPILER_DEFAULT_MEMBERS
363# define Q_COMPILER_DELETE_MEMBERS
364# define Q_COMPILER_DELEGATING_CONSTRUCTORS
365# define Q_COMPILER_EXPLICIT_CONVERSIONS
366# define Q_COMPILER_EXPLICIT_OVERRIDES
367# define Q_COMPILER_EXTERN_TEMPLATES
368# define Q_COMPILER_INHERITING_CONSTRUCTORS
369# define Q_COMPILER_INITIALIZER_LISTS
370# define Q_COMPILER_LAMBDA
371# define Q_COMPILER_NONSTATIC_MEMBER_INIT
372# define Q_COMPILER_NOEXCEPT
373# define Q_COMPILER_NULLPTR
374# define Q_COMPILER_RANGE_FOR
375# define Q_COMPILER_RAW_STRINGS
376# define Q_COMPILER_REF_QUALIFIERS
377# define Q_COMPILER_RVALUE_REFS
378# define Q_COMPILER_STATIC_ASSERT
379# define Q_COMPILER_TEMPLATE_ALIAS
380# define Q_COMPILER_THREAD_LOCAL
381# define Q_COMPILER_THREADSAFE_STATICS
382# define Q_COMPILER_UDL
383# define Q_COMPILER_UNICODE_STRINGS
384# define Q_COMPILER_UNIFORM_INIT
385# define Q_COMPILER_UNRESTRICTED_UNIONS
386# define Q_COMPILER_VARIADIC_MACROS
387# define Q_COMPILER_VARIADIC_TEMPLATES
388# endif
389# endif //__cplusplus
390
391# elif defined(__DCC__)
392# define Q_CC_DIAB
393# if !defined(__bool)
394# error "Compiler not supported"
395# endif
396
397/* The UnixWare 7 UDK compiler is based on EDG and does define __EDG__ */
398# elif defined(__USLC__) && defined(__SCO_VERSION__)
399# define Q_CC_USLC
400/* The latest UDK 7.1.1b does not need this, but previous versions do */
401# if !defined(__SCO_VERSION__) || (__SCO_VERSION__ < 302200010)
402# define Q_OUTOFLINE_TEMPLATE inline
403# endif
404
405/* Never tested! */
406# elif defined(CENTERLINE_CLPP) || defined(OBJECTCENTER)
407# define Q_CC_OC
408
409/* CDS++ defines __EDG__ although this is not documented in the Reliant
410 documentation. It also follows conventions like _BOOL and this documented */
411# elif defined(sinix)
412# define Q_CC_CDS
413
414/* The MIPSpro compiler defines __EDG */
415# elif defined(__sgi)
416# define Q_CC_MIPS
417# define Q_NO_TEMPLATE_FRIENDS
418# if defined(_COMPILER_VERSION) && (_COMPILER_VERSION >= 740)
419# define Q_OUTOFLINE_TEMPLATE inline
420# pragma set woff 3624,3625,3649 /* turn off some harmless warnings */
421# endif
422# endif
423
424/* VxWorks' DIAB toolchain has an additional EDG type C++ compiler
425 (see __DCC__ above). This one is for C mode files (__EDG is not defined) */
426#elif defined(_DIAB_TOOL)
427# define Q_CC_DIAB
428# define Q_FUNC_INFO __PRETTY_FUNCTION__
429
430/* Never tested! */
431#elif defined(__HIGHC__)
432# define Q_CC_HIGHC
433
434#elif defined(__SUNPRO_CC) || defined(__SUNPRO_C)
435# define Q_CC_SUN
436# define Q_COMPILER_MANGLES_RETURN_TYPE
437/* 5.0 compiler or better
438 'bool' is enabled by default but can be disabled using -features=nobool
439 in which case _BOOL is not defined
440 this is the default in 4.2 compatibility mode triggered by -compat=4 */
441# if __SUNPRO_CC >= 0x500
442# define QT_NO_TEMPLATE_TEMPLATE_PARAMETERS
443 /* see http://developers.sun.com/sunstudio/support/Ccompare.html */
444# if __SUNPRO_CC >= 0x590
445# define Q_TYPEOF(expr) __typeof__(expr)
446# endif
447# if __SUNPRO_CC >= 0x550
448# define Q_DECL_EXPORT __global
449# endif
450# if __SUNPRO_CC < 0x5a0
451# define Q_NO_TEMPLATE_FRIENDS
452# endif
453# if !defined(_BOOL)
454# error "Compiler not supported"
455# endif
456/* 4.2 compiler or older */
457# else
458# error "Compiler not supported"
459# endif
460
461/* CDS++ does not seem to define __EDG__ or __EDG according to Reliant
462 documentation but nevertheless uses EDG conventions like _BOOL */
463#elif defined(sinix)
464# define Q_CC_EDG
465# define Q_CC_CDS
466# if !defined(_BOOL)
467# error "Compiler not supported"
468# endif
469# define Q_BROKEN_TEMPLATE_SPECIALIZATION
470
471#elif defined(Q_OS_HPUX)
472/* __HP_aCC was not defined in first aCC releases */
473# if defined(__HP_aCC) || __cplusplus >= 199707L
474# define Q_NO_TEMPLATE_FRIENDS
475# define Q_CC_HPACC
476# define Q_FUNC_INFO __PRETTY_FUNCTION__
477# if __HP_aCC-0 < 060000
478# define QT_NO_TEMPLATE_TEMPLATE_PARAMETERS
479# define Q_DECL_EXPORT __declspec(dllexport)
480# define Q_DECL_IMPORT __declspec(dllimport)
481# endif
482# if __HP_aCC-0 >= 062000
483# define Q_DECL_EXPORT __attribute__((visibility("default")))
484# define Q_DECL_HIDDEN __attribute__((visibility("hidden")))
485# define Q_DECL_IMPORT Q_DECL_EXPORT
486# endif
487# else
488# error "Compiler not supported"
489# endif
490
491#else
492# error "Qt has not been tested with this compiler - see http://www.qt-project.org/"
493#endif
494
495/*
496 * SG10's SD-6 feature detection and some useful extensions from Clang and GCC
497 * https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
498 * http://clang.llvm.org/docs/LanguageExtensions.html#feature-checking-macros
499 * Not using wrapper macros, per http://eel.is/c++draft/cpp.cond#7.sentence-2
500 */
501#ifndef __has_builtin
502# define __has_builtin(x) 0
503#endif
504#ifndef __has_feature
505# define __has_feature(x) 0
506#endif
507#ifndef __has_attribute
508# define __has_attribute(x) 0
509#endif
510#ifndef __has_cpp_attribute
511# define __has_cpp_attribute(x) 0
512#endif
513#ifndef __has_include
514# define __has_include(x) 0
515#endif
516#ifndef __has_include_next
517# define __has_include_next(x) 0
518#endif
519
520// Kept around until all submodules have transitioned
521#define QT_HAS_BUILTIN(x) __has_builtin(x)
522#define QT_HAS_FEATURE(x) __has_feature(x)
523#define QT_HAS_ATTRIBUTE(x) __has_attribute(x)
524#define QT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
525#define QT_HAS_INCLUDE(x) __has_include(x)
526#define QT_HAS_INCLUDE_NEXT(x) __has_include_next(x)
527
528/*
529 * C++11 support
530 *
531 * Paper Macro SD-6 macro
532 * N2341 Q_COMPILER_ALIGNAS
533 * N2341 Q_COMPILER_ALIGNOF
534 * N2427 Q_COMPILER_ATOMICS
535 * N2761 Q_COMPILER_ATTRIBUTES __cpp_attributes = 200809
536 * N2541 Q_COMPILER_AUTO_FUNCTION
537 * N1984 N2546 Q_COMPILER_AUTO_TYPE
538 * N2437 Q_COMPILER_CLASS_ENUM
539 * N2235 Q_COMPILER_CONSTEXPR __cpp_constexpr = 200704
540 * N2343 N3276 Q_COMPILER_DECLTYPE __cpp_decltype = 200707
541 * N2346 Q_COMPILER_DEFAULT_MEMBERS
542 * N2346 Q_COMPILER_DELETE_MEMBERS
543 * N1986 Q_COMPILER_DELEGATING_CONSTRUCTORS
544 * N2437 Q_COMPILER_EXPLICIT_CONVERSIONS
545 * N3206 N3272 Q_COMPILER_EXPLICIT_OVERRIDES
546 * N1987 Q_COMPILER_EXTERN_TEMPLATES
547 * N2540 Q_COMPILER_INHERITING_CONSTRUCTORS
548 * N2672 Q_COMPILER_INITIALIZER_LISTS
549 * N2658 N2927 Q_COMPILER_LAMBDA __cpp_lambdas = 200907
550 * N2756 Q_COMPILER_NONSTATIC_MEMBER_INIT
551 * N2855 N3050 Q_COMPILER_NOEXCEPT
552 * N2431 Q_COMPILER_NULLPTR
553 * N2930 Q_COMPILER_RANGE_FOR
554 * N2442 Q_COMPILER_RAW_STRINGS __cpp_raw_strings = 200710
555 * N2439 Q_COMPILER_REF_QUALIFIERS
556 * N2118 N2844 N3053 Q_COMPILER_RVALUE_REFS __cpp_rvalue_references = 200610
557 * N1720 Q_COMPILER_STATIC_ASSERT __cpp_static_assert = 200410
558 * N2258 Q_COMPILER_TEMPLATE_ALIAS
559 * N2659 Q_COMPILER_THREAD_LOCAL
560 * N2660 Q_COMPILER_THREADSAFE_STATICS
561 * N2765 Q_COMPILER_UDL __cpp_user_defined_literals = 200809
562 * N2442 Q_COMPILER_UNICODE_STRINGS __cpp_unicode_literals = 200710
563 * N2640 Q_COMPILER_UNIFORM_INIT
564 * N2544 Q_COMPILER_UNRESTRICTED_UNIONS
565 * N1653 Q_COMPILER_VARIADIC_MACROS
566 * N2242 N2555 Q_COMPILER_VARIADIC_TEMPLATES __cpp_variadic_templates = 200704
567 *
568 * For any future version of the C++ standard, we use only the SD-6 macro.
569 * For full listing, see
570 * http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
571 *
572 * C++ extensions:
573 * Q_COMPILER_RESTRICTED_VLA variable-length arrays, prior to __cpp_runtime_arrays
574 */
575
576#ifdef __cplusplus
577# if __cplusplus < 201103L && !defined(Q_CC_MSVC)
578# error Qt requires a C++11 compiler and yours does not seem to be that.
579# endif
580#endif
581
582#if defined(Q_CC_INTEL) && !defined(Q_CC_MSVC)
583# define Q_COMPILER_RESTRICTED_VLA
584# define Q_COMPILER_VARIADIC_MACROS // C++11 feature supported as an extension in other modes, too
585# define Q_COMPILER_THREADSAFE_STATICS
586# if __INTEL_COMPILER < 1200
587# define Q_NO_TEMPLATE_FRIENDS
588# endif
589# if __INTEL_COMPILER >= 1310 && !defined(_WIN32)
590// ICC supports C++14 binary literals in C, C++98, and C++11 modes
591// at least since 13.1, but I can't test further back
592# define Q_COMPILER_BINARY_LITERALS
593# endif
594# if __cplusplus >= 201103L || defined(__INTEL_CXX11_MODE__)
595# if __INTEL_COMPILER >= 1200
596# define Q_COMPILER_AUTO_TYPE
597# define Q_COMPILER_CLASS_ENUM
598# define Q_COMPILER_DECLTYPE
599# define Q_COMPILER_DEFAULT_MEMBERS
600# define Q_COMPILER_DELETE_MEMBERS
601# define Q_COMPILER_EXTERN_TEMPLATES
602# define Q_COMPILER_LAMBDA
603# define Q_COMPILER_RVALUE_REFS
604# define Q_COMPILER_STATIC_ASSERT
605# define Q_COMPILER_VARIADIC_MACROS
606# endif
607# if __INTEL_COMPILER >= 1210
608# define Q_COMPILER_ATTRIBUTES
609# define Q_COMPILER_AUTO_FUNCTION
610# define Q_COMPILER_NULLPTR
611# define Q_COMPILER_TEMPLATE_ALIAS
612# ifndef _CHAR16T // MSVC headers
613# define Q_COMPILER_UNICODE_STRINGS
614# endif
615# define Q_COMPILER_VARIADIC_TEMPLATES
616# endif
617# if __INTEL_COMPILER >= 1300
618# define Q_COMPILER_ATOMICS
619// constexpr support is only partial
620//# define Q_COMPILER_CONSTEXPR
621# define Q_COMPILER_INITIALIZER_LISTS
622# define Q_COMPILER_UNIFORM_INIT
623# define Q_COMPILER_NOEXCEPT
624# endif
625# if __INTEL_COMPILER >= 1400
626// causes issues with QArrayData and QtPrivate::RefCount - Intel issue ID 6000056211, bug DPD200534796
627//# define Q_COMPILER_CONSTEXPR
628# define Q_COMPILER_DELEGATING_CONSTRUCTORS
629# define Q_COMPILER_EXPLICIT_CONVERSIONS
630# define Q_COMPILER_EXPLICIT_OVERRIDES
631# define Q_COMPILER_NONSTATIC_MEMBER_INIT
632# define Q_COMPILER_RANGE_FOR
633# define Q_COMPILER_RAW_STRINGS
634# define Q_COMPILER_REF_QUALIFIERS
635# define Q_COMPILER_UNICODE_STRINGS
636# define Q_COMPILER_UNRESTRICTED_UNIONS
637# endif
638# if __INTEL_COMPILER >= 1500
639# if __INTEL_COMPILER * 100 + __INTEL_COMPILER_UPDATE >= 150001
640// the bug mentioned above is fixed in 15.0.1
641# define Q_COMPILER_CONSTEXPR
642# endif
643# define Q_COMPILER_ALIGNAS
644# define Q_COMPILER_ALIGNOF
645# define Q_COMPILER_INHERITING_CONSTRUCTORS
646# define Q_COMPILER_THREAD_LOCAL
647# define Q_COMPILER_UDL
648# endif
649# elif defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
650// C11 features supported. Only tested with ICC 17 and up.
651# define Q_COMPILER_STATIC_ASSERT
652# if __has_include(<threads.h>)
653# define Q_COMPILER_THREAD_LOCAL
654# endif
655# endif
656#endif
657
658#if defined(Q_CC_CLANG) && !defined(Q_CC_INTEL) && !defined(Q_CC_MSVC)
659/* General C++ features */
660# define Q_COMPILER_RESTRICTED_VLA
661# define Q_COMPILER_THREADSAFE_STATICS
662# if __has_feature(attribute_deprecated_with_message)
663# define Q_DECL_DEPRECATED_X(text) __attribute__ ((__deprecated__(text)))
664# endif
665
666// Clang supports binary literals in C, C++98 and C++11 modes
667// It's been supported "since the dawn of time itself" (cf. commit 179883)
668# if __has_extension(cxx_binary_literals)
669# define Q_COMPILER_BINARY_LITERALS
670# endif
671
672// Variadic macros are supported for gnu++98, c++11, c99 ... since 2.9
673# if Q_CC_CLANG >= 209
674# if !defined(__STRICT_ANSI__) || defined(__GXX_EXPERIMENTAL_CXX0X__) \
675 || (defined(__cplusplus) && (__cplusplus >= 201103L)) \
676 || (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L))
677# define Q_COMPILER_VARIADIC_MACROS
678# endif
679# endif
680
681/* C++11 features, see http://clang.llvm.org/cxx_status.html */
682# if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
683 /* Detect C++ features using __has_feature(), see http://clang.llvm.org/docs/LanguageExtensions.html#cxx11 */
684# if __has_feature(cxx_alignas)
685# define Q_COMPILER_ALIGNAS
686# define Q_COMPILER_ALIGNOF
687# endif
688# if __has_feature(cxx_atomic) && __has_include(<atomic>)
689# define Q_COMPILER_ATOMICS
690# endif
691# if __has_feature(cxx_attributes)
692# define Q_COMPILER_ATTRIBUTES
693# endif
694# if __has_feature(cxx_auto_type)
695# define Q_COMPILER_AUTO_FUNCTION
696# define Q_COMPILER_AUTO_TYPE
697# endif
698# if __has_feature(cxx_strong_enums)
699# define Q_COMPILER_CLASS_ENUM
700# endif
701# if __has_feature(cxx_constexpr) && Q_CC_CLANG > 302 /* CLANG 3.2 has bad/partial support */
702# define Q_COMPILER_CONSTEXPR
703# endif
704# if __has_feature(cxx_decltype) /* && __has_feature(cxx_decltype_incomplete_return_types) */
705# define Q_COMPILER_DECLTYPE
706# endif
707# if __has_feature(cxx_defaulted_functions)
708# define Q_COMPILER_DEFAULT_MEMBERS
709# endif
710# if __has_feature(cxx_deleted_functions)
711# define Q_COMPILER_DELETE_MEMBERS
712# endif
713# if __has_feature(cxx_delegating_constructors)
714# define Q_COMPILER_DELEGATING_CONSTRUCTORS
715# endif
716# if __has_feature(cxx_explicit_conversions)
717# define Q_COMPILER_EXPLICIT_CONVERSIONS
718# endif
719# if __has_feature(cxx_override_control)
720# define Q_COMPILER_EXPLICIT_OVERRIDES
721# endif
722# if __has_feature(cxx_inheriting_constructors)
723# define Q_COMPILER_INHERITING_CONSTRUCTORS
724# endif
725# if __has_feature(cxx_generalized_initializers)
726# define Q_COMPILER_INITIALIZER_LISTS
727# define Q_COMPILER_UNIFORM_INIT /* both covered by this feature macro, according to docs */
728# endif
729# if __has_feature(cxx_lambdas)
730# define Q_COMPILER_LAMBDA
731# endif
732# if __has_feature(cxx_noexcept)
733# define Q_COMPILER_NOEXCEPT
734# endif
735# if __has_feature(cxx_nonstatic_member_init)
736# define Q_COMPILER_NONSTATIC_MEMBER_INIT
737# endif
738# if __has_feature(cxx_nullptr)
739# define Q_COMPILER_NULLPTR
740# endif
741# if __has_feature(cxx_range_for)
742# define Q_COMPILER_RANGE_FOR
743# endif
744# if __has_feature(cxx_raw_string_literals)
745# define Q_COMPILER_RAW_STRINGS
746# endif
747# if __has_feature(cxx_reference_qualified_functions)
748# define Q_COMPILER_REF_QUALIFIERS
749# endif
750# if __has_feature(cxx_rvalue_references)
751# define Q_COMPILER_RVALUE_REFS
752# endif
753# if __has_feature(cxx_static_assert)
754# define Q_COMPILER_STATIC_ASSERT
755# endif
756# if __has_feature(cxx_alias_templates)
757# define Q_COMPILER_TEMPLATE_ALIAS
758# endif
759# if __has_feature(cxx_thread_local)
760# if !defined(__FreeBSD__) /* FreeBSD clang fails on __cxa_thread_atexit */
761# define Q_COMPILER_THREAD_LOCAL
762# endif
763# endif
764# if __has_feature(cxx_user_literals)
765# define Q_COMPILER_UDL
766# endif
767# if __has_feature(cxx_unicode_literals)
768# define Q_COMPILER_UNICODE_STRINGS
769# endif
770# if __has_feature(cxx_unrestricted_unions)
771# define Q_COMPILER_UNRESTRICTED_UNIONS
772# endif
773# if __has_feature(cxx_variadic_templates)
774# define Q_COMPILER_VARIADIC_TEMPLATES
775# endif
776 /* Features that have no __has_feature() check */
777# if Q_CC_CLANG >= 209 /* since clang 2.9 */
778# define Q_COMPILER_EXTERN_TEMPLATES
779# endif
780# endif
781
782/* C++1y features, deprecated macros. Do not update this list. */
783# if __cplusplus > 201103L
784//# if __has_feature(cxx_binary_literals)
785//# define Q_COMPILER_BINARY_LITERALS // see above
786//# endif
787# if __has_feature(cxx_generic_lambda)
788# define Q_COMPILER_GENERIC_LAMBDA
789# endif
790# if __has_feature(cxx_init_capture)
791# define Q_COMPILER_LAMBDA_CAPTURES
792# endif
793# if __has_feature(cxx_relaxed_constexpr)
794# define Q_COMPILER_RELAXED_CONSTEXPR_FUNCTIONS
795# endif
796# if __has_feature(cxx_decltype_auto) && __has_feature(cxx_return_type_deduction)
797# define Q_COMPILER_RETURN_TYPE_DEDUCTION
798# endif
799# if __has_feature(cxx_variable_templates)
800# define Q_COMPILER_VARIABLE_TEMPLATES
801# endif
802# if __has_feature(cxx_runtime_array)
803# define Q_COMPILER_VLA
804# endif
805# endif
806
807# if defined(__STDC_VERSION__)
808# if __has_feature(c_static_assert)
809# define Q_COMPILER_STATIC_ASSERT
810# endif
811# if __has_feature(c_thread_local) && __has_include(<threads.h>)
812# if !defined(__FreeBSD__) /* FreeBSD clang fails on __cxa_thread_atexit */
813# define Q_COMPILER_THREAD_LOCAL
814# endif
815# endif
816# endif
817
818#endif // Q_CC_CLANG && !Q_CC_INTEL && !Q_CC_MSVC
819
820#if defined(Q_CC_CLANG) && !defined(Q_CC_INTEL)
821# ifndef Q_DECL_UNUSED
822# define Q_DECL_UNUSED __attribute__((__unused__))
823# endif
824# define Q_DECL_UNUSED_MEMBER Q_DECL_UNUSED
825#endif
826
827#if defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && !defined(Q_CC_CLANG)
828# define Q_COMPILER_RESTRICTED_VLA
829# define Q_COMPILER_THREADSAFE_STATICS
830# if Q_CC_GNU >= 403
831// GCC supports binary literals in C, C++98 and C++11 modes
832# define Q_COMPILER_BINARY_LITERALS
833# endif
834# if !defined(__STRICT_ANSI__) || defined(__GXX_EXPERIMENTAL_CXX0X__) \
835 || (defined(__cplusplus) && (__cplusplus >= 201103L)) \
836 || (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L))
837 // Variadic macros are supported for gnu++98, c++11, C99 ... since forever (gcc 2.97)
838# define Q_COMPILER_VARIADIC_MACROS
839# endif
840# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
841# if Q_CC_GNU >= 403
842 /* C++11 features supported in GCC 4.3: */
843# define Q_COMPILER_DECLTYPE
844# define Q_COMPILER_RVALUE_REFS
845# define Q_COMPILER_STATIC_ASSERT
846# endif
847# if Q_CC_GNU >= 404
848 /* C++11 features supported in GCC 4.4: */
849# define Q_COMPILER_AUTO_FUNCTION
850# define Q_COMPILER_AUTO_TYPE
851# define Q_COMPILER_EXTERN_TEMPLATES
852# define Q_COMPILER_UNIFORM_INIT
853# define Q_COMPILER_UNICODE_STRINGS
854# define Q_COMPILER_VARIADIC_TEMPLATES
855# endif
856# if Q_CC_GNU >= 405
857 /* C++11 features supported in GCC 4.5: */
858# define Q_COMPILER_EXPLICIT_CONVERSIONS
859 /* GCC 4.4 implements initializer_list but does not define typedefs required
860 * by the standard. */
861# define Q_COMPILER_INITIALIZER_LISTS
862# define Q_COMPILER_LAMBDA
863# define Q_COMPILER_RAW_STRINGS
864# define Q_COMPILER_CLASS_ENUM
865# endif
866# if Q_CC_GNU >= 406
867 /* Pre-4.6 compilers implement a non-final snapshot of N2346, hence default and delete
868 * functions are supported only if they are public. Starting from 4.6, GCC handles
869 * final version - the access modifier is not relevant. */
870# define Q_COMPILER_DEFAULT_MEMBERS
871# define Q_COMPILER_DELETE_MEMBERS
872 /* C++11 features supported in GCC 4.6: */
873# define Q_COMPILER_NULLPTR
874# define Q_COMPILER_UNRESTRICTED_UNIONS
875# define Q_COMPILER_RANGE_FOR
876# endif
877# if Q_CC_GNU >= 407
878 /* GCC 4.4 implemented <atomic> and std::atomic using its old intrinsics.
879 * However, the implementation is incomplete for most platforms until GCC 4.7:
880 * instead, std::atomic would use an external lock. Since we need an std::atomic
881 * that is behavior-compatible with QBasicAtomic, we only enable it here */
882# define Q_COMPILER_ATOMICS
883 /* GCC 4.6.x has problems dealing with noexcept expressions,
884 * so turn the feature on for 4.7 and above, only */
885# define Q_COMPILER_NOEXCEPT
886 /* C++11 features supported in GCC 4.7: */
887# define Q_COMPILER_NONSTATIC_MEMBER_INIT
888# define Q_COMPILER_DELEGATING_CONSTRUCTORS
889# define Q_COMPILER_EXPLICIT_OVERRIDES
890# define Q_COMPILER_TEMPLATE_ALIAS
891# define Q_COMPILER_UDL
892# endif
893# if Q_CC_GNU >= 408
894# define Q_COMPILER_ATTRIBUTES
895# define Q_COMPILER_ALIGNAS
896# define Q_COMPILER_ALIGNOF
897# define Q_COMPILER_INHERITING_CONSTRUCTORS
898# define Q_COMPILER_THREAD_LOCAL
899# if Q_CC_GNU > 408 || __GNUC_PATCHLEVEL__ >= 1
900# define Q_COMPILER_REF_QUALIFIERS
901# endif
902# endif
903# if Q_CC_GNU >= 500
904 /* GCC 4.6 introduces constexpr, but it's bugged (at least) in the whole
905 * 4.x series, see e.g. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57694 */
906# define Q_COMPILER_CONSTEXPR
907# endif
908# endif
909# if __cplusplus > 201103L
910# if Q_CC_GNU >= 409
911 /* C++1y features in GCC 4.9 - deprecated, do not update this list */
912//# define Q_COMPILER_BINARY_LITERALS // already supported since GCC 4.3 as an extension
913# define Q_COMPILER_LAMBDA_CAPTURES
914# define Q_COMPILER_RETURN_TYPE_DEDUCTION
915# endif
916# endif
917# if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
918# if Q_CC_GNU >= 407
919 /* C11 features supported in GCC 4.7: */
920# define Q_COMPILER_STATIC_ASSERT
921# endif
922# if Q_CC_GNU >= 409 && defined(__has_include)
923 /* C11 features supported in GCC 4.9: */
924# if __has_include(<threads.h>)
925# define Q_COMPILER_THREAD_LOCAL
926# endif
927# endif
928# endif
929#endif
930
931#if defined(Q_CC_MSVC)
932# if defined(__cplusplus)
933 /* C++11 features supported in VC8 = VC2005: */
934# define Q_COMPILER_VARIADIC_MACROS
935
936 /* 2005 supports the override and final contextual keywords, in
937 the same positions as the C++11 variants, but 'final' is
938 called 'sealed' instead:
939 http://msdn.microsoft.com/en-us/library/0w2w91tf%28v=vs.80%29.aspx
940 The behavior is slightly different in C++/CLI, which requires the
941 "virtual" keyword to be present too, so don't define for that.
942 So don't define Q_COMPILER_EXPLICIT_OVERRIDES (since it's not
943 the same as the C++11 version), but define the Q_DECL_* flags
944 accordingly. */
945 /* C++11 features supported in VC10 = VC2010: */
946# define Q_COMPILER_AUTO_FUNCTION
947# define Q_COMPILER_AUTO_TYPE
948# define Q_COMPILER_DECLTYPE
949# define Q_COMPILER_EXTERN_TEMPLATES
950# define Q_COMPILER_LAMBDA
951# define Q_COMPILER_NULLPTR
952# define Q_COMPILER_RVALUE_REFS
953# define Q_COMPILER_STATIC_ASSERT
954 /* C++11 features supported in VC11 = VC2012: */
955# define Q_COMPILER_EXPLICIT_OVERRIDES /* ...and use std C++11 now */
956# define Q_COMPILER_CLASS_ENUM
957# define Q_COMPILER_ATOMICS
958 /* C++11 features in VC12 = VC2013 */
959# define Q_COMPILER_DELETE_MEMBERS
960# define Q_COMPILER_DELEGATING_CONSTRUCTORS
961# define Q_COMPILER_EXPLICIT_CONVERSIONS
962# define Q_COMPILER_NONSTATIC_MEMBER_INIT
963# define Q_COMPILER_RAW_STRINGS
964# define Q_COMPILER_TEMPLATE_ALIAS
965# define Q_COMPILER_VARIADIC_TEMPLATES
966# define Q_COMPILER_INITIALIZER_LISTS // VC 12 SP 2 RC
967 /* C++11 features in VC14 = VC2015 */
968# define Q_COMPILER_DEFAULT_MEMBERS
969# define Q_COMPILER_ALIGNAS
970# define Q_COMPILER_ALIGNOF
971# define Q_COMPILER_INHERITING_CONSTRUCTORS
972# define Q_COMPILER_NOEXCEPT
973# define Q_COMPILER_RANGE_FOR
974# define Q_COMPILER_REF_QUALIFIERS
975# define Q_COMPILER_THREAD_LOCAL
976# define Q_COMPILER_UDL
977# define Q_COMPILER_UNICODE_STRINGS
978# define Q_COMPILER_UNRESTRICTED_UNIONS
979# if _MSC_FULL_VER >= 190023419
980# define Q_COMPILER_ATTRIBUTES
981// Almost working, see https://connect.microsoft.com/VisualStudio/feedback/details/2011648
982//# define Q_COMPILER_CONSTEXPR
983# define Q_COMPILER_THREADSAFE_STATICS
984# define Q_COMPILER_UNIFORM_INIT
985# endif
986# if _MSC_VER >= 1910
987# define Q_COMPILER_CONSTEXPR
988# endif
989# endif /* __cplusplus */
990#endif /* Q_CC_MSVC */
991
992#ifdef Q_COMPILER_UNICODE_STRINGS
993# define Q_STDLIB_UNICODE_STRINGS
994#elif defined(__cplusplus)
995# error "Qt6 requires Unicode string support in both the compiler and the standard library"
996#endif
997
998#ifdef __cplusplus
999# include <utility>
1000# if defined(Q_OS_QNX)
1001// By default, QNX 7.0 uses libc++ (from LLVM) and
1002// QNX 6.X uses Dinkumware's libcpp. In all versions,
1003// it is also possible to use GNU libstdc++.
1004
1005// For Dinkumware, some features must be disabled
1006// (mostly because of library problems).
1007// Dinkumware is assumed when __GLIBCXX__ (GNU libstdc++)
1008// and _LIBCPP_VERSION (LLVM libc++) are both absent.
1009# if !defined(__GLIBCXX__) && !defined(_LIBCPP_VERSION)
1010
1011// Older versions of libcpp (QNX 650) do not support C++11 features
1012// _HAS_* macros are set to 1 by toolchains that actually include
1013// Dinkum C++11 libcpp.
1014
1015# if !defined(_HAS_CPP0X) || !_HAS_CPP0X
1016// Disable C++11 features that depend on library support
1017# undef Q_COMPILER_INITIALIZER_LISTS
1018# undef Q_COMPILER_RVALUE_REFS
1019# undef Q_COMPILER_REF_QUALIFIERS
1020# undef Q_COMPILER_NOEXCEPT
1021// Disable C++11 library features:
1022# undef Q_STDLIB_UNICODE_STRINGS
1023# endif // !_HAS_CPP0X
1024# if !defined(_HAS_NULLPTR_T) || !_HAS_NULLPTR_T
1025# undef Q_COMPILER_NULLPTR
1026# endif //!_HAS_NULLPTR_T
1027# if !defined(_HAS_CONSTEXPR) || !_HAS_CONSTEXPR
1028// The libcpp is missing constexpr keywords on important functions like std::numeric_limits<>::min()
1029// Disable constexpr support on QNX even if the compiler supports it
1030# undef Q_COMPILER_CONSTEXPR
1031# endif // !_HAS_CONSTEXPR
1032# endif // !__GLIBCXX__ && !_LIBCPP_VERSION
1033# endif // Q_OS_QNX
1034# if (defined(Q_CC_CLANG) || defined(Q_CC_INTEL)) && defined(Q_OS_MAC) && defined(__GNUC_LIBSTD__) \
1035 && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402)
1036// Apple has not updated libstdc++ since 2007, which means it does not have
1037// <initializer_list> or std::move. Let's disable these features
1038# undef Q_COMPILER_INITIALIZER_LISTS
1039# undef Q_COMPILER_RVALUE_REFS
1040# undef Q_COMPILER_REF_QUALIFIERS
1041// Also disable <atomic>, since it's clearly not there
1042# undef Q_COMPILER_ATOMICS
1043# endif
1044# if defined(Q_CC_CLANG) && defined(Q_CC_INTEL) && Q_CC_INTEL >= 1500
1045// ICC 15.x and 16.0 have their own implementation of std::atomic, which is activated when in Clang mode
1046// (probably because libc++'s <atomic> on OS X failed to compile), but they're missing some
1047// critical definitions. (Reported as Intel Issue ID 6000117277)
1048# define __USE_CONSTEXPR 1
1049# define __USE_NOEXCEPT 1
1050# endif
1051# if defined(Q_COMPILER_THREADSAFE_STATICS) && defined(Q_OS_MAC)
1052// Apple's low-level implementation of the C++ support library
1053// (libc++abi.dylib, shared between libstdc++ and libc++) has deadlocks. The
1054// C++11 standard requires the deadlocks to be removed, so this will eventually
1055// be fixed; for now, let's disable this.
1056# undef Q_COMPILER_THREADSAFE_STATICS
1057# endif
1058#endif
1059
1060/*
1061 * C++11 keywords and expressions
1062 */
1063#ifdef Q_COMPILER_NULLPTR
1064# define Q_NULLPTR nullptr
1065#else
1066# define Q_NULLPTR NULL
1067#endif
1068
1069#ifdef Q_COMPILER_DEFAULT_MEMBERS
1070# define Q_DECL_EQ_DEFAULT = default
1071#else
1072# define Q_DECL_EQ_DEFAULT
1073#endif
1074
1075#ifdef Q_COMPILER_DELETE_MEMBERS
1076# define Q_DECL_EQ_DELETE = delete
1077#else
1078# define Q_DECL_EQ_DELETE
1079#endif
1080
1081// Don't break code that is already using Q_COMPILER_DEFAULT_DELETE_MEMBERS
1082#if defined(Q_COMPILER_DEFAULT_MEMBERS) && defined(Q_COMPILER_DELETE_MEMBERS)
1083# define Q_COMPILER_DEFAULT_DELETE_MEMBERS
1084#endif
1085
1086#if defined Q_COMPILER_CONSTEXPR
1087# if defined(__cpp_constexpr) && __cpp_constexpr-0 >= 201304
1088# define Q_DECL_CONSTEXPR constexpr
1089# define Q_DECL_RELAXED_CONSTEXPR constexpr
1090# define Q_CONSTEXPR constexpr
1091# define Q_RELAXED_CONSTEXPR constexpr
1092# else
1093# define Q_DECL_CONSTEXPR constexpr
1094# define Q_DECL_RELAXED_CONSTEXPR
1095# define Q_CONSTEXPR constexpr
1096# define Q_RELAXED_CONSTEXPR const
1097# endif
1098#else
1099# define Q_DECL_CONSTEXPR
1100# define Q_DECL_RELAXED_CONSTEXPR
1101# define Q_CONSTEXPR const
1102# define Q_RELAXED_CONSTEXPR const
1103#endif
1104
1105#ifdef Q_COMPILER_EXPLICIT_OVERRIDES
1106# define Q_DECL_OVERRIDE override
1107# define Q_DECL_FINAL final
1108#else
1109# ifndef Q_DECL_OVERRIDE
1110# define Q_DECL_OVERRIDE
1111# endif
1112# ifndef Q_DECL_FINAL
1113# define Q_DECL_FINAL
1114# endif
1115#endif
1116
1117#ifdef Q_COMPILER_NOEXCEPT
1118# define Q_DECL_NOEXCEPT noexcept
1119# define Q_DECL_NOEXCEPT_EXPR(x) noexcept(x)
1120#else
1121# define Q_DECL_NOEXCEPT
1122# define Q_DECL_NOEXCEPT_EXPR(x)
1123#endif
1124#define Q_DECL_NOTHROW Q_DECL_NOEXCEPT
1125
1126#ifndef Q_ALIGNOF
1127# define Q_ALIGNOF(x) alignof(x)
1128#endif
1129
1130#ifndef Q_DECL_ALIGN
1131# define Q_DECL_ALIGN(n) alignas(n)
1132#endif
1133
1134#if __has_cpp_attribute(nodiscard) && (!defined(Q_CC_CLANG) || __cplusplus > 201402L) // P0188R1
1135// Can't use [[nodiscard]] with Clang and C++11/14, see https://bugs.llvm.org/show_bug.cgi?id=33518
1136# undef Q_REQUIRED_RESULT
1137# define Q_REQUIRED_RESULT [[nodiscard]]
1138#endif
1139
1140#if __has_cpp_attribute(maybe_unused)
1141# undef Q_DECL_UNUSED
1142# define Q_DECL_UNUSED [[maybe_unused]]
1143#endif
1144
1145#if __has_cpp_attribute(deprecated)
1146# ifdef Q_DECL_DEPRECATED
1147# undef Q_DECL_DEPRECATED
1148# endif
1149# ifdef Q_DECL_DEPRECATED_X
1150# undef Q_DECL_DEPRECATED_X
1151# endif
1152# define Q_DECL_DEPRECATED [[deprecated]]
1153# define Q_DECL_DEPRECATED_X(x) [[deprecated(x)]]
1154#endif
1155
1156#if defined(__cpp_enumerator_attributes) && __cpp_enumerator_attributes >= 201411
1157# define Q_DECL_ENUMERATOR_DEPRECATED Q_DECL_DEPRECATED
1158# define Q_DECL_ENUMERATOR_DEPRECATED_X(x) Q_DECL_DEPRECATED_X(x)
1159#endif
1160
1161/*
1162 * Fallback macros to certain compiler features
1163 */
1164
1165#ifndef Q_NORETURN
1166# define Q_NORETURN
1167#endif
1168#ifndef Q_LIKELY
1169# define Q_LIKELY(x) (x)
1170#endif
1171#ifndef Q_UNLIKELY
1172# define Q_UNLIKELY(x) (x)
1173#endif
1174#ifndef Q_ASSUME_IMPL
1175# define Q_ASSUME_IMPL(expr) qt_noop()
1176#endif
1177#ifndef Q_UNREACHABLE_IMPL
1178# define Q_UNREACHABLE_IMPL() qt_noop()
1179#endif
1180#ifndef Q_ALLOC_SIZE
1181# define Q_ALLOC_SIZE(x)
1182#endif
1183#ifndef Q_REQUIRED_RESULT
1184# define Q_REQUIRED_RESULT
1185#endif
1186#ifndef Q_DECL_DEPRECATED
1187# define Q_DECL_DEPRECATED
1188#endif
1189#ifndef Q_DECL_VARIABLE_DEPRECATED
1190# define Q_DECL_VARIABLE_DEPRECATED Q_DECL_DEPRECATED
1191#endif
1192#ifndef Q_DECL_DEPRECATED_X
1193# define Q_DECL_DEPRECATED_X(text) Q_DECL_DEPRECATED
1194#endif
1195#ifndef Q_DECL_ENUMERATOR_DEPRECATED
1196# define Q_DECL_ENUMERATOR_DEPRECATED
1197#endif
1198#ifndef Q_DECL_ENUMERATOR_DEPRECATED_X
1199# define Q_DECL_ENUMERATOR_DEPRECATED_X(x)
1200#endif
1201#ifndef Q_DECL_EXPORT
1202# define Q_DECL_EXPORT
1203#endif
1204#ifndef Q_DECL_IMPORT
1205# define Q_DECL_IMPORT
1206#endif
1207#ifndef Q_DECL_HIDDEN
1208# define Q_DECL_HIDDEN
1209#endif
1210#ifndef Q_DECL_UNUSED
1211# define Q_DECL_UNUSED
1212#endif
1213#ifndef Q_DECL_UNUSED_MEMBER
1214# define Q_DECL_UNUSED_MEMBER
1215#endif
1216#ifndef Q_FUNC_INFO
1217# if defined(Q_OS_SOLARIS) || defined(Q_CC_XLC)
1218# define Q_FUNC_INFO __FILE__ "(line number unavailable)"
1219# else
1220# define Q_FUNC_INFO __FILE__ ":" QT_STRINGIFY(__LINE__)
1221# endif
1222#endif
1223#ifndef Q_DECL_CF_RETURNS_RETAINED
1224# define Q_DECL_CF_RETURNS_RETAINED
1225#endif
1226#ifndef Q_DECL_NS_RETURNS_AUTORELEASED
1227# define Q_DECL_NS_RETURNS_AUTORELEASED
1228#endif
1229#ifndef Q_DECL_PURE_FUNCTION
1230# define Q_DECL_PURE_FUNCTION
1231#endif
1232#ifndef Q_DECL_CONST_FUNCTION
1233# define Q_DECL_CONST_FUNCTION Q_DECL_PURE_FUNCTION
1234#endif
1235#ifndef Q_DECL_COLD_FUNCTION
1236# define Q_DECL_COLD_FUNCTION
1237#endif
1238#ifndef QT_MAKE_UNCHECKED_ARRAY_ITERATOR
1239# define QT_MAKE_UNCHECKED_ARRAY_ITERATOR(x) (x)
1240#endif
1241#ifndef QT_MAKE_CHECKED_ARRAY_ITERATOR
1242# define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) (x)
1243#endif
1244
1245/*
1246 * "Weak overloads" - makes an otherwise confliciting overload weaker
1247 * (by making it a template)
1248 */
1249#define Q_WEAK_OVERLOAD template <typename = void>
1250
1251/*
1252 * Warning/diagnostic handling
1253 */
1254
1255#define QT_DO_PRAGMA(text) _Pragma(#text)
1256#if defined(Q_CC_INTEL) && defined(Q_CC_MSVC)
1257/* icl.exe: Intel compiler on Windows */
1258# undef QT_DO_PRAGMA /* not needed */
1259# define QT_WARNING_PUSH __pragma(warning(push))
1260# define QT_WARNING_POP __pragma(warning(pop))
1261# define QT_WARNING_DISABLE_MSVC(number)
1262# define QT_WARNING_DISABLE_INTEL(number) __pragma(warning(disable: number))
1263# define QT_WARNING_DISABLE_CLANG(text)
1264# define QT_WARNING_DISABLE_GCC(text)
1265# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_INTEL(1478 1786)
1266# define QT_WARNING_DISABLE_FLOAT_COMPARE QT_WARNING_DISABLE_INTEL(1572)
1267# define QT_WARNING_DISABLE_INVALID_OFFSETOF
1268#elif defined(Q_CC_INTEL)
1269/* icc: Intel compiler on Linux or OS X */
1270# define QT_WARNING_PUSH QT_DO_PRAGMA(warning(push))
1271# define QT_WARNING_POP QT_DO_PRAGMA(warning(pop))
1272# define QT_WARNING_DISABLE_INTEL(number) QT_DO_PRAGMA(warning(disable: number))
1273# define QT_WARNING_DISABLE_MSVC(number)
1274# define QT_WARNING_DISABLE_CLANG(text)
1275# define QT_WARNING_DISABLE_GCC(text)
1276# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_INTEL(1478 1786)
1277# define QT_WARNING_DISABLE_FLOAT_COMPARE QT_WARNING_DISABLE_INTEL(1572)
1278# define QT_WARNING_DISABLE_INVALID_OFFSETOF
1279#elif defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
1280# undef QT_DO_PRAGMA /* not needed */
1281# define QT_WARNING_PUSH __pragma(warning(push))
1282# define QT_WARNING_POP __pragma(warning(pop))
1283# define QT_WARNING_DISABLE_MSVC(number) __pragma(warning(disable: number))
1284# define QT_WARNING_DISABLE_INTEL(number)
1285# define QT_WARNING_DISABLE_CLANG(text)
1286# define QT_WARNING_DISABLE_GCC(text)
1287# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_MSVC(4996)
1288# define QT_WARNING_DISABLE_FLOAT_COMPARE
1289# define QT_WARNING_DISABLE_INVALID_OFFSETOF
1290#elif defined(Q_CC_CLANG)
1291# define QT_WARNING_PUSH QT_DO_PRAGMA(clang diagnostic push)
1292# define QT_WARNING_POP QT_DO_PRAGMA(clang diagnostic pop)
1293# define QT_WARNING_DISABLE_CLANG(text) QT_DO_PRAGMA(clang diagnostic ignored text)
1294# define QT_WARNING_DISABLE_GCC(text)
1295# define QT_WARNING_DISABLE_INTEL(number)
1296# define QT_WARNING_DISABLE_MSVC(number)
1297# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_CLANG("-Wdeprecated-declarations")
1298# define QT_WARNING_DISABLE_FLOAT_COMPARE QT_WARNING_DISABLE_CLANG("-Wfloat-equal")
1299# define QT_WARNING_DISABLE_INVALID_OFFSETOF QT_WARNING_DISABLE_CLANG("-Winvalid-offsetof")
1300#elif defined(Q_CC_GNU) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 406)
1301# define QT_WARNING_PUSH QT_DO_PRAGMA(GCC diagnostic push)
1302# define QT_WARNING_POP QT_DO_PRAGMA(GCC diagnostic pop)
1303# define QT_WARNING_DISABLE_GCC(text) QT_DO_PRAGMA(GCC diagnostic ignored text)
1304# define QT_WARNING_DISABLE_CLANG(text)
1305# define QT_WARNING_DISABLE_INTEL(number)
1306# define QT_WARNING_DISABLE_MSVC(number)
1307# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_GCC("-Wdeprecated-declarations")
1308# define QT_WARNING_DISABLE_FLOAT_COMPARE QT_WARNING_DISABLE_GCC("-Wfloat-equal")
1309# define QT_WARNING_DISABLE_INVALID_OFFSETOF QT_WARNING_DISABLE_GCC("-Winvalid-offsetof")
1310#else // All other compilers, GCC < 4.6 and MSVC < 2008
1311# define QT_WARNING_DISABLE_GCC(text)
1312# define QT_WARNING_PUSH
1313# define QT_WARNING_POP
1314# define QT_WARNING_DISABLE_INTEL(number)
1315# define QT_WARNING_DISABLE_MSVC(number)
1316# define QT_WARNING_DISABLE_CLANG(text)
1317# define QT_WARNING_DISABLE_GCC(text)
1318# define QT_WARNING_DISABLE_DEPRECATED
1319# define QT_WARNING_DISABLE_FLOAT_COMPARE
1320#endif
1321
1322#ifndef QT_IGNORE_DEPRECATIONS
1323#define QT_IGNORE_DEPRECATIONS(statement) \
1324 QT_WARNING_PUSH \
1325 QT_WARNING_DISABLE_DEPRECATED \
1326 statement \
1327 QT_WARNING_POP
1328#endif
1329
1330/*
1331 Proper for-scoping in MIPSpro CC
1332*/
1333#ifndef QT_NO_KEYWORDS
1334# if defined(Q_CC_MIPS) || (defined(Q_CC_HPACC) && defined(__ia64))
1335# define for if (0) {} else for
1336# endif
1337#endif
1338
1339#ifdef Q_COMPILER_RVALUE_REFS
1340#define qMove(x) std::move(x)
1341#else
1342#define qMove(x) (x)
1343#endif
1344
1345#define Q_UNREACHABLE() \
1346 do {\
1347 Q_ASSERT_X(false, "Q_UNREACHABLE()", "Q_UNREACHABLE was reached");\
1348 Q_UNREACHABLE_IMPL();\
1349 } while (false)
1350
1351#define Q_ASSUME(Expr) \
1352 do {\
1353 const bool valueOfExpression = Expr;\
1354 Q_ASSERT_X(valueOfExpression, "Q_ASSUME()", "Assumption in Q_ASSUME(\"" #Expr "\") was not correct");\
1355 Q_ASSUME_IMPL(valueOfExpression);\
1356 } while (false)
1357
1358#if defined(__cplusplus)
1359#if __has_cpp_attribute(clang::fallthrough)
1360# define Q_FALLTHROUGH() [[clang::fallthrough]]
1361#elif __has_cpp_attribute(gnu::fallthrough)
1362# define Q_FALLTHROUGH() [[gnu::fallthrough]]
1363#elif __has_cpp_attribute(fallthrough)
1364# define Q_FALLTHROUGH() [[fallthrough]]
1365#endif
1366#endif
1367#ifndef Q_FALLTHROUGH
1368# if (defined(Q_CC_GNU) && Q_CC_GNU >= 700) && !defined(Q_CC_INTEL)
1369# define Q_FALLTHROUGH() __attribute__((fallthrough))
1370# else
1371# define Q_FALLTHROUGH() (void)0
1372#endif
1373#endif
1374
1375
1376/*
1377 Sanitize compiler feature availability
1378*/
1379#if !defined(Q_PROCESSOR_X86)
1380# undef QT_COMPILER_SUPPORTS_SSE2
1381# undef QT_COMPILER_SUPPORTS_SSE3
1382# undef QT_COMPILER_SUPPORTS_SSSE3
1383# undef QT_COMPILER_SUPPORTS_SSE4_1
1384# undef QT_COMPILER_SUPPORTS_SSE4_2
1385# undef QT_COMPILER_SUPPORTS_AVX
1386# undef QT_COMPILER_SUPPORTS_AVX2
1387# undef QT_COMPILER_SUPPORTS_F16C
1388#endif
1389#if !defined(Q_PROCESSOR_ARM)
1390# undef QT_COMPILER_SUPPORTS_NEON
1391#endif
1392#if !defined(Q_PROCESSOR_MIPS)
1393# undef QT_COMPILER_SUPPORTS_MIPS_DSP
1394# undef QT_COMPILER_SUPPORTS_MIPS_DSPR2
1395#endif
1396
1397#endif // QCOMPILERDETECTION_H
1398