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qtbase/src/corelib/global/qcompilerdetection.h
Mårten Nordheim 70d46c20f1 QVariant: fix msvc version comparison for c++20 support check 
Was meant to be >=, not <.

Amends ab06d402dd833cefe9c0d929c13e93068aab96d9

Pick-to: 6.7
Change-Id: I5aa2236d2ffc7274e14918aea28c9a3e3545b6c4
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
(cherry picked from commit d6eda60b330e72570be9ce43ce5dc01cd8851665)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
2024-08-02 14:23:44 +00:00

1429 lines
51 KiB
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// Copyright (C) 2022 The Qt Company Ltd.
// Copyright (C) 2016 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#if 0
#pragma qt_class(QtCompilerDetection)
#pragma qt_sync_skip_header_check
#pragma qt_sync_stop_processing
#endif
#ifndef QCOMPILERDETECTION_H
#define QCOMPILERDETECTION_H
#include <QtCore/qprocessordetection.h>
#include <QtCore/qsystemdetection.h>
#include <QtCore/qtconfiginclude.h>
/*
The compiler, must be one of: (Q_CC_x)
COVERITY - Coverity cov-scan
SYM - Digital Mars C/C++ (used to be Symantec C++)
MSVC - Microsoft Visual C/C++, Intel C++ for Windows
BOR - Borland/Turbo C++
WAT - Watcom C++
GNU - GNU C++
COMEAU - Comeau C++
EDG - Edison Design Group C++
OC - CenterLine C++
SUN - Forte Developer, or Sun Studio C++
MIPS - MIPSpro C++
DEC - DEC C++
HPACC - HP aC++
USLC - SCO OUDK and UDK
CDS - Reliant C++
KAI - KAI C++
INTEL - Intel C++ for Linux, Intel C++ for Windows
HIGHC - MetaWare High C/C++
PGI - Portland Group C++
GHS - Green Hills Optimizing C++ Compilers
RVCT - ARM Realview Compiler Suite
CLANG - C++ front-end for the LLVM compiler
Should be sorted most to least authoritative.
*/
#if defined(__COVERITY__)
# define Q_CC_COVERITY
# define Q_COMPILER_COMPLAINS_ABOUT_RETURN_AFTER_UNREACHABLE
#endif
/* Symantec C++ is now Digital Mars */
#if defined(__DMC__) || defined(__SC__)
# define Q_CC_SYM
/* "explicit" semantics implemented in 8.1e but keyword recognized since 7.5 */
# if defined(__SC__) && __SC__ < 0x750
# error "Compiler not supported"
# endif
#elif defined(_MSC_VER)
# define Q_CC_MSVC (_MSC_VER)
# define Q_CC_MSVC_NET
# define Q_CC_MSVC_ONLY Q_CC_MSVC
# ifdef __clang__
# undef Q_CC_MSVC_ONLY
# define Q_CC_CLANG ((__clang_major__ * 100) + __clang_minor__)
# define Q_CC_CLANG_ONLY Q_CC_CLANG
# endif
# define Q_OUTOFLINE_TEMPLATE inline
# define Q_COMPILER_MANGLES_RETURN_TYPE
# define Q_COMPILER_MANGLES_ACCESS_SPECIFIER
# define Q_FUNC_INFO __FUNCSIG__
# define Q_ASSUME_IMPL(expr) __assume(expr)
# define Q_UNREACHABLE_IMPL() __assume(0)
# define Q_DECL_EXPORT __declspec(dllexport)
# define Q_DECL_IMPORT __declspec(dllimport)
# if _MSC_VER < 1938 // stdext is deprecated since VS 2022 17.8
# define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) stdext::make_checked_array_iterator(x, size_t(N)) // Since _MSC_VER >= 1500
# endif
# define Q_COMPILER_COMPLAINS_ABOUT_RETURN_AFTER_UNREACHABLE
#elif defined(__BORLANDC__) || defined(__TURBOC__)
# define Q_CC_BOR
# define Q_INLINE_TEMPLATE
# if __BORLANDC__ < 0x502
# error "Compiler not supported"
# endif
#elif defined(__WATCOMC__)
# define Q_CC_WAT
/* ARM Realview Compiler Suite
RVCT compiler also defines __EDG__ and __GNUC__ (if --gnu flag is given),
so check for it before that */
#elif defined(__ARMCC__) || defined(__CC_ARM)
# define Q_CC_RVCT
/* work-around for missing compiler intrinsics */
# define __is_empty(X) false
# define __is_pod(X) false
# define Q_DECL_DEPRECATED __attribute__ ((__deprecated__))
# ifdef Q_OS_LINUX
# define Q_DECL_EXPORT __attribute__((visibility("default")))
# define Q_DECL_IMPORT __attribute__((visibility("default")))
# define Q_DECL_HIDDEN __attribute__((visibility("hidden")))
# else
# define Q_DECL_EXPORT __declspec(dllexport)
# define Q_DECL_IMPORT __declspec(dllimport)
# endif
#elif defined(__GNUC__)
# define Q_CC_GNU (__GNUC__ * 100 + __GNUC_MINOR__)
# if defined(__MINGW32__)
# define Q_CC_MINGW
# endif
# if defined(__clang__)
/* Clang also masquerades as GCC */
# if defined(__apple_build_version__)
// The Clang version reported by Apple Clang in __clang_major__
// and __clang_minor__ does _not_ reflect the actual upstream
// version of the compiler. To allow consumers to use a single
// define to verify the Clang version we hard-code the versions
// based on the best available info we have about the actual
// version: http://en.wikipedia.org/wiki/Xcode#Toolchain_Versions
# if __apple_build_version__ >= 14030022 // Xcode 14.3
# define Q_CC_CLANG 1500
# elif __apple_build_version__ >= 14000029 // Xcode 14.0
# define Q_CC_CLANG 1400
# elif __apple_build_version__ >= 13160021 // Xcode 13.3
# define Q_CC_CLANG 1300
# elif __apple_build_version__ >= 13000029 // Xcode 13.0
# define Q_CC_CLANG 1200
# elif __apple_build_version__ >= 12050022 // Xcode 12.5
# define Q_CC_CLANG 1110
# elif __apple_build_version__ >= 12000032 // Xcode 12.0
# define Q_CC_CLANG 1000
# elif __apple_build_version__ >= 11030032 // Xcode 11.4
# define Q_CC_CLANG 900
# elif __apple_build_version__ >= 11000033 // Xcode 11.0
# define Q_CC_CLANG 800
# else
# error "Unsupported Apple Clang version"
# endif
# else
// Non-Apple Clang, so we trust the versions reported
# define Q_CC_CLANG ((__clang_major__ * 100) + __clang_minor__)
# endif
# define Q_CC_CLANG_ONLY Q_CC_CLANG
# if __has_builtin(__builtin_assume)
# define Q_ASSUME_IMPL(expr) __builtin_assume(expr)
# else
# define Q_ASSUME_IMPL(expr) if (expr){} else __builtin_unreachable()
# endif
# define Q_UNREACHABLE_IMPL() __builtin_unreachable()
# if !defined(__has_extension)
# /* Compatibility with older Clang versions */
# define __has_extension __has_feature
# endif
# if defined(__APPLE__)
/* Apple/clang specific features */
# define Q_DECL_CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
# ifdef __OBJC__
# define Q_DECL_NS_RETURNS_AUTORELEASED __attribute__((ns_returns_autoreleased))
# endif
# endif
# ifdef __EMSCRIPTEN__
# define Q_CC_EMSCRIPTEN
# endif
# else
/* Plain GCC */
# define Q_CC_GNU_ONLY Q_CC_GNU
# if Q_CC_GNU >= 405
# define Q_ASSUME_IMPL(expr) if (expr){} else __builtin_unreachable()
# define Q_UNREACHABLE_IMPL() __builtin_unreachable()
# define Q_DECL_DEPRECATED_X(text) __attribute__ ((__deprecated__(text)))
# endif
# endif
# ifdef Q_OS_WIN
# define Q_DECL_EXPORT __declspec(dllexport)
# define Q_DECL_IMPORT __declspec(dllimport)
# else
# define Q_DECL_EXPORT_OVERRIDABLE __attribute__((visibility("default"), weak))
# ifdef QT_USE_PROTECTED_VISIBILITY
# define Q_DECL_EXPORT __attribute__((visibility("protected")))
# else
# define Q_DECL_EXPORT __attribute__((visibility("default")))
# endif
# define Q_DECL_IMPORT __attribute__((visibility("default")))
# define Q_DECL_HIDDEN __attribute__((visibility("hidden")))
# endif
# define Q_FUNC_INFO __PRETTY_FUNCTION__
# define Q_TYPEOF(expr) __typeof__(expr)
# define Q_DECL_DEPRECATED __attribute__ ((__deprecated__))
# define Q_DECL_UNUSED __attribute__((__unused__))
# define Q_LIKELY(expr) __builtin_expect(!!(expr), true)
# define Q_UNLIKELY(expr) __builtin_expect(!!(expr), false)
# define Q_NORETURN __attribute__((__noreturn__))
# define Q_REQUIRED_RESULT __attribute__ ((__warn_unused_result__))
# define Q_DECL_PURE_FUNCTION __attribute__((pure))
# define Q_DECL_CONST_FUNCTION __attribute__((const))
# define Q_DECL_COLD_FUNCTION __attribute__((cold))
# if !defined(QT_MOC_CPP)
# define Q_PACKED __attribute__ ((__packed__))
# ifndef __ARM_EABI__
# define QT_NO_ARM_EABI
# endif
# endif
# if Q_CC_GNU >= 403 && !defined(Q_CC_CLANG)
# define Q_ALLOC_SIZE(x) __attribute__((alloc_size(x)))
# endif
/* IBM compiler versions are a bit messy. There are actually two products:
the C product, and the C++ product. The C++ compiler is always packaged
with the latest version of the C compiler. Version numbers do not always
match. This little table (I'm not sure it's accurate) should be helpful:
C++ product C product
C Set 3.1 C Compiler 3.0
... ...
C++ Compiler 3.6.6 C Compiler 4.3
... ...
Visual Age C++ 4.0 ...
... ...
Visual Age C++ 5.0 C Compiler 5.0
... ...
Visual Age C++ 6.0 C Compiler 6.0
Now:
__xlC__ is the version of the C compiler in hexadecimal notation
is only an approximation of the C++ compiler version
__IBMCPP__ is the version of the C++ compiler in decimal notation
but it is not defined on older compilers like C Set 3.1 */
#elif defined(__xlC__)
# define Q_CC_XLC
# if __xlC__ < 0x400
# error "Compiler not supported"
# elif __xlC__ >= 0x0600
# define Q_TYPEOF(expr) __typeof__(expr)
# define Q_PACKED __attribute__((__packed__))
# endif
/* Older versions of DEC C++ do not define __EDG__ or __EDG - observed
on DEC C++ V5.5-004. New versions do define __EDG__ - observed on
Compaq C++ V6.3-002.
This compiler is different enough from other EDG compilers to handle
it separately anyway. */
#elif defined(__DECCXX) || defined(__DECC)
# define Q_CC_DEC
/* Compaq C++ V6 compilers are EDG-based but I'm not sure about older
DEC C++ V5 compilers. */
# if defined(__EDG__)
# define Q_CC_EDG
# endif
/* Compaq has disabled EDG's _BOOL macro and uses _BOOL_EXISTS instead
- observed on Compaq C++ V6.3-002.
In any case versions prior to Compaq C++ V6.0-005 do not have bool. */
# if !defined(_BOOL_EXISTS)
# error "Compiler not supported"
# endif
/* Spurious (?) error messages observed on Compaq C++ V6.5-014. */
/* Apply to all versions prior to Compaq C++ V6.0-000 - observed on
DEC C++ V5.5-004. */
# if __DECCXX_VER < 60060000
# define Q_BROKEN_TEMPLATE_SPECIALIZATION
# endif
/* avoid undefined symbol problems with out-of-line template members */
# define Q_OUTOFLINE_TEMPLATE inline
/* The Portland Group C++ compiler is based on EDG and does define __EDG__
but the C compiler does not */
#elif defined(__PGI)
# define Q_CC_PGI
# if defined(__EDG__)
# define Q_CC_EDG
# endif
/* Compilers with EDG front end are similar. To detect them we test:
__EDG documented by SGI, observed on MIPSpro 7.3.1.1 and KAI C++ 4.0b
__EDG__ documented in EDG online docs, observed on Compaq C++ V6.3-002
and PGI C++ 5.2-4 */
#elif !defined(Q_OS_HPUX) && (defined(__EDG) || defined(__EDG__))
# define Q_CC_EDG
/* From the EDG documentation (does not seem to apply to Compaq C++ or GHS C):
_BOOL
Defined in C++ mode when bool is a keyword. The name of this
predefined macro is specified by a configuration flag. _BOOL
is the default.
__BOOL_DEFINED
Defined in Microsoft C++ mode when bool is a keyword. */
# if !defined(_BOOL) && !defined(__BOOL_DEFINED) && !defined(__ghs)
# error "Compiler not supported"
# endif
/* The Comeau compiler is based on EDG and does define __EDG__ */
# if defined(__COMO__)
# define Q_CC_COMEAU
/* The `using' keyword was introduced to avoid KAI C++ warnings
but it's now causing KAI C++ errors instead. The standard is
unclear about the use of this keyword, and in practice every
compiler is using its own set of rules. Forget it. */
# elif defined(__KCC)
# define Q_CC_KAI
/* Uses CFront, make sure to read the manual how to tweak templates. */
# elif defined(__ghs)
# define Q_CC_GHS
# define Q_DECL_DEPRECATED __attribute__ ((__deprecated__))
# define Q_PACKED __attribute__ ((__packed__))
# define Q_FUNC_INFO __PRETTY_FUNCTION__
# define Q_TYPEOF(expr) __typeof__(expr)
# define Q_UNREACHABLE_IMPL()
# if defined(__cplusplus)
# define Q_COMPILER_AUTO_TYPE
# define Q_COMPILER_STATIC_ASSERT
# define Q_COMPILER_RANGE_FOR
# if __GHS_VERSION_NUMBER >= 201505
# define Q_COMPILER_ALIGNAS
# define Q_COMPILER_ALIGNOF
# define Q_COMPILER_ATOMICS
# define Q_COMPILER_ATTRIBUTES
# define Q_COMPILER_AUTO_FUNCTION
# define Q_COMPILER_CLASS_ENUM
# define Q_COMPILER_DECLTYPE
# define Q_COMPILER_DEFAULT_MEMBERS
# define Q_COMPILER_DELETE_MEMBERS
# define Q_COMPILER_DELEGATING_CONSTRUCTORS
# define Q_COMPILER_EXPLICIT_CONVERSIONS
# define Q_COMPILER_EXPLICIT_OVERRIDES
# define Q_COMPILER_EXTERN_TEMPLATES
# define Q_COMPILER_INHERITING_CONSTRUCTORS
# define Q_COMPILER_INITIALIZER_LISTS
# define Q_COMPILER_LAMBDA
# define Q_COMPILER_NONSTATIC_MEMBER_INIT
# define Q_COMPILER_NOEXCEPT
# define Q_COMPILER_NULLPTR
# define Q_COMPILER_RANGE_FOR
# define Q_COMPILER_RAW_STRINGS
# define Q_COMPILER_REF_QUALIFIERS
# define Q_COMPILER_RVALUE_REFS
# define Q_COMPILER_STATIC_ASSERT
# define Q_COMPILER_TEMPLATE_ALIAS
# define Q_COMPILER_THREAD_LOCAL
# define Q_COMPILER_UDL
# define Q_COMPILER_UNICODE_STRINGS
# define Q_COMPILER_UNIFORM_INIT
# define Q_COMPILER_UNRESTRICTED_UNIONS
# define Q_COMPILER_VARIADIC_MACROS
# define Q_COMPILER_VARIADIC_TEMPLATES
# endif
# endif //__cplusplus
# elif defined(__DCC__)
# define Q_CC_DIAB
# if !defined(__bool)
# error "Compiler not supported"
# endif
/* The UnixWare 7 UDK compiler is based on EDG and does define __EDG__ */
# elif defined(__USLC__) && defined(__SCO_VERSION__)
# define Q_CC_USLC
/* The latest UDK 7.1.1b does not need this, but previous versions do */
# if !defined(__SCO_VERSION__) || (__SCO_VERSION__ < 302200010)
# define Q_OUTOFLINE_TEMPLATE inline
# endif
/* Never tested! */
# elif defined(CENTERLINE_CLPP) || defined(OBJECTCENTER)
# define Q_CC_OC
/* CDS++ defines __EDG__ although this is not documented in the Reliant
documentation. It also follows conventions like _BOOL and this documented */
# elif defined(sinix)
# define Q_CC_CDS
# endif
/* VxWorks' DIAB toolchain has an additional EDG type C++ compiler
(see __DCC__ above). This one is for C mode files (__EDG is not defined) */
#elif defined(_DIAB_TOOL)
# define Q_CC_DIAB
# define Q_FUNC_INFO __PRETTY_FUNCTION__
/* Never tested! */
#elif defined(__HIGHC__)
# define Q_CC_HIGHC
#elif defined(__SUNPRO_CC) || defined(__SUNPRO_C)
# define Q_CC_SUN
# define Q_COMPILER_MANGLES_RETURN_TYPE
/* 5.0 compiler or better
'bool' is enabled by default but can be disabled using -features=nobool
in which case _BOOL is not defined
this is the default in 4.2 compatibility mode triggered by -compat=4 */
# if __SUNPRO_CC >= 0x500
# define QT_NO_TEMPLATE_TEMPLATE_PARAMETERS
/* see http://developers.sun.com/sunstudio/support/Ccompare.html */
# if __SUNPRO_CC >= 0x590
# define Q_TYPEOF(expr) __typeof__(expr)
# endif
# if __SUNPRO_CC >= 0x550
# define Q_DECL_EXPORT __global
# endif
# if !defined(_BOOL)
# error "Compiler not supported"
# endif
/* 4.2 compiler or older */
# else
# error "Compiler not supported"
# endif
/* CDS++ does not seem to define __EDG__ or __EDG according to Reliant
documentation but nevertheless uses EDG conventions like _BOOL */
#elif defined(sinix)
# define Q_CC_EDG
# define Q_CC_CDS
# if !defined(_BOOL)
# error "Compiler not supported"
# endif
# define Q_BROKEN_TEMPLATE_SPECIALIZATION
#else
# error "Qt has not been tested with this compiler - see http://www.qt-project.org/"
#endif
/*
* SG10's SD-6 feature detection and some useful extensions from Clang and GCC
* https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
* http://clang.llvm.org/docs/LanguageExtensions.html#feature-checking-macros
* Not using wrapper macros, per http://eel.is/c++draft/cpp.cond#7.sentence-2
*/
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
#ifndef __has_feature
# define __has_feature(x) 0
#endif
#ifndef __has_attribute
# define __has_attribute(x) 0
#endif
#ifndef __has_cpp_attribute
# define __has_cpp_attribute(x) 0
#endif
#ifndef __has_include
# define __has_include(x) 0
#endif
#ifndef __has_include_next
# define __has_include_next(x) 0
#endif
/*
detecting ASAN can be helpful to disable slow tests
clang uses feature, gcc defines __SANITIZE_ADDRESS__
unconditionally check both in case other compilers mirror
either of those options
*/
#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
# define QT_ASAN_ENABLED
#endif
#ifdef __cplusplus
# if __has_include(<version>) /* remove this check once Integrity, QNX have caught up */
# include <version>
# endif
#endif
/*
* C++11 support
*
* Paper Macro SD-6 macro
* N2341 Q_COMPILER_ALIGNAS
* N2341 Q_COMPILER_ALIGNOF
* N2427 Q_COMPILER_ATOMICS
* N2761 Q_COMPILER_ATTRIBUTES __cpp_attributes = 200809
* N2541 Q_COMPILER_AUTO_FUNCTION
* N1984 N2546 Q_COMPILER_AUTO_TYPE
* N2437 Q_COMPILER_CLASS_ENUM
* N2235 Q_COMPILER_CONSTEXPR __cpp_constexpr = 200704
* N2343 N3276 Q_COMPILER_DECLTYPE __cpp_decltype = 200707
* N2346 Q_COMPILER_DEFAULT_MEMBERS
* N2346 Q_COMPILER_DELETE_MEMBERS
* N1986 Q_COMPILER_DELEGATING_CONSTRUCTORS
* N2437 Q_COMPILER_EXPLICIT_CONVERSIONS
* N3206 N3272 Q_COMPILER_EXPLICIT_OVERRIDES
* N1987 Q_COMPILER_EXTERN_TEMPLATES
* N2540 Q_COMPILER_INHERITING_CONSTRUCTORS
* N2672 Q_COMPILER_INITIALIZER_LISTS
* N2658 N2927 Q_COMPILER_LAMBDA __cpp_lambdas = 200907
* N2756 Q_COMPILER_NONSTATIC_MEMBER_INIT
* N2855 N3050 Q_COMPILER_NOEXCEPT
* N2431 Q_COMPILER_NULLPTR
* N2930 Q_COMPILER_RANGE_FOR
* N2442 Q_COMPILER_RAW_STRINGS __cpp_raw_strings = 200710
* N2439 Q_COMPILER_REF_QUALIFIERS
* N2118 N2844 N3053 Q_COMPILER_RVALUE_REFS __cpp_rvalue_references = 200610
* N1720 Q_COMPILER_STATIC_ASSERT __cpp_static_assert = 200410
* N2258 Q_COMPILER_TEMPLATE_ALIAS
* N2659 Q_COMPILER_THREAD_LOCAL
* N2660 Q_COMPILER_THREADSAFE_STATICS
* N2765 Q_COMPILER_UDL __cpp_user_defined_literals = 200809
* N2442 Q_COMPILER_UNICODE_STRINGS __cpp_unicode_literals = 200710
* N2640 Q_COMPILER_UNIFORM_INIT
* N2544 Q_COMPILER_UNRESTRICTED_UNIONS
* N1653 Q_COMPILER_VARIADIC_MACROS
* N2242 N2555 Q_COMPILER_VARIADIC_TEMPLATES __cpp_variadic_templates = 200704
*
*
* For the C++ standards C++14 and C++17, we use only the SD-6 macro.
*
* For any future version of the C++ standard, we use only the C++20 feature test macro.
* For library features, we assume <version> is present (this header includes it).
*
* For a full listing of feature test macros, see
* https://en.cppreference.com/w/cpp/feature_test
*
* C++ extensions:
* Q_COMPILER_RESTRICTED_VLA variable-length arrays, prior to __cpp_runtime_arrays
*/
/*
* Now that we require C++17, we unconditionally expect threadsafe statics mandated since C++11
*/
#define Q_COMPILER_THREADSAFE_STATICS
#if defined(Q_CC_CLANG)
/* General C++ features */
# define Q_COMPILER_RESTRICTED_VLA
# if __has_feature(attribute_deprecated_with_message)
# define Q_DECL_DEPRECATED_X(text) __attribute__ ((__deprecated__(text)))
# endif
// Clang supports binary literals in C, C++98 and C++11 modes
// It's been supported "since the dawn of time itself" (cf. commit 179883)
# if __has_extension(cxx_binary_literals)
# define Q_COMPILER_BINARY_LITERALS
# endif
// Variadic macros are supported for gnu++98, c++11, c99 ... since 2.9
# if Q_CC_CLANG >= 209
# if !defined(__STRICT_ANSI__) || defined(__GXX_EXPERIMENTAL_CXX0X__) \
|| (defined(__cplusplus) && (__cplusplus >= 201103L)) \
|| (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L))
# define Q_COMPILER_VARIADIC_MACROS
# endif
# endif
/* C++11 features, see http://clang.llvm.org/cxx_status.html */
# if (defined(__cplusplus) && __cplusplus >= 201103L) \
|| defined(__GXX_EXPERIMENTAL_CXX0X__)
/* Detect C++ features using __has_feature(), see http://clang.llvm.org/docs/LanguageExtensions.html#cxx11 */
# if __has_feature(cxx_alignas)
# define Q_COMPILER_ALIGNAS
# define Q_COMPILER_ALIGNOF
# endif
# if __has_feature(cxx_atomic) && __has_include(<atomic>)
# define Q_COMPILER_ATOMICS
# endif
# if __has_feature(cxx_attributes)
# define Q_COMPILER_ATTRIBUTES
# endif
# if __has_feature(cxx_auto_type)
# define Q_COMPILER_AUTO_FUNCTION
# define Q_COMPILER_AUTO_TYPE
# endif
# if __has_feature(cxx_strong_enums)
# define Q_COMPILER_CLASS_ENUM
# endif
# if __has_feature(cxx_constexpr) && Q_CC_CLANG > 302 /* CLANG 3.2 has bad/partial support */
# define Q_COMPILER_CONSTEXPR
# endif
# if __has_feature(cxx_decltype) /* && __has_feature(cxx_decltype_incomplete_return_types) */
# define Q_COMPILER_DECLTYPE
# endif
# if __has_feature(cxx_defaulted_functions)
# define Q_COMPILER_DEFAULT_MEMBERS
# endif
# if __has_feature(cxx_deleted_functions)
# define Q_COMPILER_DELETE_MEMBERS
# endif
# if __has_feature(cxx_delegating_constructors)
# define Q_COMPILER_DELEGATING_CONSTRUCTORS
# endif
# if __has_feature(cxx_explicit_conversions)
# define Q_COMPILER_EXPLICIT_CONVERSIONS
# endif
# if __has_feature(cxx_override_control)
# define Q_COMPILER_EXPLICIT_OVERRIDES
# endif
# if __has_feature(cxx_inheriting_constructors)
# define Q_COMPILER_INHERITING_CONSTRUCTORS
# endif
# if __has_feature(cxx_generalized_initializers)
# define Q_COMPILER_INITIALIZER_LISTS
# define Q_COMPILER_UNIFORM_INIT /* both covered by this feature macro, according to docs */
# endif
# if __has_feature(cxx_lambdas)
# define Q_COMPILER_LAMBDA
# endif
# if __has_feature(cxx_noexcept)
# define Q_COMPILER_NOEXCEPT
# endif
# if __has_feature(cxx_nonstatic_member_init)
# define Q_COMPILER_NONSTATIC_MEMBER_INIT
# endif
# if __has_feature(cxx_nullptr)
# define Q_COMPILER_NULLPTR
# endif
# if __has_feature(cxx_range_for)
# define Q_COMPILER_RANGE_FOR
# endif
# if __has_feature(cxx_raw_string_literals)
# define Q_COMPILER_RAW_STRINGS
# endif
# if __has_feature(cxx_reference_qualified_functions)
# define Q_COMPILER_REF_QUALIFIERS
# endif
# if __has_feature(cxx_rvalue_references)
# define Q_COMPILER_RVALUE_REFS
# endif
# if __has_feature(cxx_static_assert)
# define Q_COMPILER_STATIC_ASSERT
# endif
# if __has_feature(cxx_alias_templates)
# define Q_COMPILER_TEMPLATE_ALIAS
# endif
# if __has_feature(cxx_thread_local)
# if !defined(__FreeBSD__) /* FreeBSD clang fails on __cxa_thread_atexit */
# define Q_COMPILER_THREAD_LOCAL
# endif
# endif
# if __has_feature(cxx_user_literals)
# define Q_COMPILER_UDL
# endif
# if __has_feature(cxx_unicode_literals)
# define Q_COMPILER_UNICODE_STRINGS
# endif
# if __has_feature(cxx_unrestricted_unions)
# define Q_COMPILER_UNRESTRICTED_UNIONS
# endif
# if __has_feature(cxx_variadic_templates)
# define Q_COMPILER_VARIADIC_TEMPLATES
# endif
/* Features that have no __has_feature() check */
# if Q_CC_CLANG >= 209 /* since clang 2.9 */
# define Q_COMPILER_EXTERN_TEMPLATES
# endif
# endif // (defined(__cplusplus) && __cplusplus >= 201103L) || defined(__GXX_EXPERIMENTAL_CXX0X__)
/* C++1y features, deprecated macros. Do not update this list. */
# if defined(__cplusplus) && __cplusplus > 201103L
//# if __has_feature(cxx_binary_literals)
//# define Q_COMPILER_BINARY_LITERALS // see above
//# endif
# if __has_feature(cxx_generic_lambda)
# define Q_COMPILER_GENERIC_LAMBDA
# endif
# if __has_feature(cxx_init_capture)
# define Q_COMPILER_LAMBDA_CAPTURES
# endif
# if __has_feature(cxx_relaxed_constexpr)
# define Q_COMPILER_RELAXED_CONSTEXPR_FUNCTIONS
# endif
# if __has_feature(cxx_decltype_auto) && __has_feature(cxx_return_type_deduction)
# define Q_COMPILER_RETURN_TYPE_DEDUCTION
# endif
# if __has_feature(cxx_variable_templates)
# define Q_COMPILER_VARIABLE_TEMPLATES
# endif
# if __has_feature(cxx_runtime_array)
# define Q_COMPILER_VLA
# endif
# endif // if defined(__cplusplus) && __cplusplus > 201103L
# if defined(__STDC_VERSION__)
# if __has_feature(c_static_assert)
# define Q_COMPILER_STATIC_ASSERT
# endif
# if __has_feature(c_thread_local) && __has_include(<threads.h>)
# if !defined(__FreeBSD__) /* FreeBSD clang fails on __cxa_thread_atexit */
# define Q_COMPILER_THREAD_LOCAL
# endif
# endif
# endif
# ifndef Q_DECL_UNUSED
# define Q_DECL_UNUSED __attribute__((__unused__))
# endif
# define Q_DECL_UNUSED_MEMBER Q_DECL_UNUSED
#endif // defined(Q_CC_CLANG)
#if defined(Q_CC_GNU_ONLY)
# define Q_COMPILER_RESTRICTED_VLA
# if Q_CC_GNU >= 403
// GCC supports binary literals in C, C++98 and C++11 modes
# define Q_COMPILER_BINARY_LITERALS
# endif
# if !defined(__STRICT_ANSI__) || defined(__GXX_EXPERIMENTAL_CXX0X__) \
|| (defined(__cplusplus) && (__cplusplus >= 201103L)) \
|| (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L))
// Variadic macros are supported for gnu++98, c++11, C99 ... since forever (gcc 2.97)
# define Q_COMPILER_VARIADIC_MACROS
# endif
# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
# if Q_CC_GNU >= 403
/* C++11 features supported in GCC 4.3: */
# define Q_COMPILER_DECLTYPE
# define Q_COMPILER_RVALUE_REFS
# define Q_COMPILER_STATIC_ASSERT
# endif
# if Q_CC_GNU >= 404
/* C++11 features supported in GCC 4.4: */
# define Q_COMPILER_AUTO_FUNCTION
# define Q_COMPILER_AUTO_TYPE
# define Q_COMPILER_EXTERN_TEMPLATES
# define Q_COMPILER_UNIFORM_INIT
# define Q_COMPILER_UNICODE_STRINGS
# define Q_COMPILER_VARIADIC_TEMPLATES
# endif
# if Q_CC_GNU >= 405
/* C++11 features supported in GCC 4.5: */
# define Q_COMPILER_EXPLICIT_CONVERSIONS
/* GCC 4.4 implements initializer_list but does not define typedefs required
* by the standard. */
# define Q_COMPILER_INITIALIZER_LISTS
# define Q_COMPILER_LAMBDA
# define Q_COMPILER_RAW_STRINGS
# define Q_COMPILER_CLASS_ENUM
# endif
# if Q_CC_GNU >= 406
/* Pre-4.6 compilers implement a non-final snapshot of N2346, hence default and delete
* functions are supported only if they are public. Starting from 4.6, GCC handles
* final version - the access modifier is not relevant. */
# define Q_COMPILER_DEFAULT_MEMBERS
# define Q_COMPILER_DELETE_MEMBERS
/* C++11 features supported in GCC 4.6: */
# define Q_COMPILER_NULLPTR
# define Q_COMPILER_UNRESTRICTED_UNIONS
# define Q_COMPILER_RANGE_FOR
# endif
# if Q_CC_GNU >= 407
/* GCC 4.4 implemented <atomic> and std::atomic using its old intrinsics.
* However, the implementation is incomplete for most platforms until GCC 4.7:
* instead, std::atomic would use an external lock. Since we need an std::atomic
* that is behavior-compatible with QBasicAtomic, we only enable it here */
# define Q_COMPILER_ATOMICS
/* GCC 4.6.x has problems dealing with noexcept expressions,
* so turn the feature on for 4.7 and above, only */
# define Q_COMPILER_NOEXCEPT
/* C++11 features supported in GCC 4.7: */
# define Q_COMPILER_NONSTATIC_MEMBER_INIT
# define Q_COMPILER_DELEGATING_CONSTRUCTORS
# define Q_COMPILER_EXPLICIT_OVERRIDES
# define Q_COMPILER_TEMPLATE_ALIAS
# define Q_COMPILER_UDL
# endif
# if Q_CC_GNU >= 408
# define Q_COMPILER_ATTRIBUTES
# define Q_COMPILER_ALIGNAS
# define Q_COMPILER_ALIGNOF
# define Q_COMPILER_INHERITING_CONSTRUCTORS
# define Q_COMPILER_THREAD_LOCAL
# if Q_CC_GNU > 408 || __GNUC_PATCHLEVEL__ >= 1
# define Q_COMPILER_REF_QUALIFIERS
# endif
# endif
# if Q_CC_GNU >= 500
/* GCC 4.6 introduces constexpr, but it's bugged (at least) in the whole
* 4.x series, see e.g. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57694 */
# define Q_COMPILER_CONSTEXPR
# endif
# endif
# if __cplusplus > 201103L
# if Q_CC_GNU >= 409
/* C++1y features in GCC 4.9 - deprecated, do not update this list */
//# define Q_COMPILER_BINARY_LITERALS // already supported since GCC 4.3 as an extension
# define Q_COMPILER_LAMBDA_CAPTURES
# define Q_COMPILER_RETURN_TYPE_DEDUCTION
# endif
# endif
# if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
# if Q_CC_GNU >= 407
/* C11 features supported in GCC 4.7: */
# define Q_COMPILER_STATIC_ASSERT
# endif
# if Q_CC_GNU >= 409 && defined(__has_include)
/* C11 features supported in GCC 4.9: */
# if __has_include(<threads.h>)
# define Q_COMPILER_THREAD_LOCAL
# endif
# endif
# endif
#endif
#if defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
# if defined(__cplusplus)
/* C++11 features supported in VC8 = VC2005: */
# define Q_COMPILER_VARIADIC_MACROS
/* 2005 supports the override and final contextual keywords, in
the same positions as the C++11 variants, but 'final' is
called 'sealed' instead:
http://msdn.microsoft.com/en-us/library/0w2w91tf%28v=vs.80%29.aspx
The behavior is slightly different in C++/CLI, which requires the
"virtual" keyword to be present too, so don't define for that.
So don't define Q_COMPILER_EXPLICIT_OVERRIDES (since it's not
the same as the C++11 version), but define the Q_DECL_* flags
accordingly. */
/* C++11 features supported in VC10 = VC2010: */
# define Q_COMPILER_AUTO_FUNCTION
# define Q_COMPILER_AUTO_TYPE
# define Q_COMPILER_DECLTYPE
# define Q_COMPILER_EXTERN_TEMPLATES
# define Q_COMPILER_LAMBDA
# define Q_COMPILER_NULLPTR
# define Q_COMPILER_RVALUE_REFS
# define Q_COMPILER_STATIC_ASSERT
/* C++11 features supported in VC11 = VC2012: */
# define Q_COMPILER_EXPLICIT_OVERRIDES /* ...and use std C++11 now */
# define Q_COMPILER_CLASS_ENUM
# define Q_COMPILER_ATOMICS
/* C++11 features in VC12 = VC2013 */
# define Q_COMPILER_DELETE_MEMBERS
# define Q_COMPILER_DELEGATING_CONSTRUCTORS
# define Q_COMPILER_EXPLICIT_CONVERSIONS
# define Q_COMPILER_NONSTATIC_MEMBER_INIT
# define Q_COMPILER_RAW_STRINGS
# define Q_COMPILER_TEMPLATE_ALIAS
# define Q_COMPILER_VARIADIC_TEMPLATES
# define Q_COMPILER_INITIALIZER_LISTS // VC 12 SP 2 RC
/* C++11 features in VC14 = VC2015 */
# define Q_COMPILER_DEFAULT_MEMBERS
# define Q_COMPILER_ALIGNAS
# define Q_COMPILER_ALIGNOF
# define Q_COMPILER_INHERITING_CONSTRUCTORS
# define Q_COMPILER_NOEXCEPT
# define Q_COMPILER_RANGE_FOR
# define Q_COMPILER_REF_QUALIFIERS
# define Q_COMPILER_THREAD_LOCAL
# define Q_COMPILER_UDL
# define Q_COMPILER_UNICODE_STRINGS
# define Q_COMPILER_UNRESTRICTED_UNIONS
# if _MSC_FULL_VER >= 190023419
# define Q_COMPILER_ATTRIBUTES
// Almost working, see https://connect.microsoft.com/VisualStudio/feedback/details/2011648
//# define Q_COMPILER_CONSTEXPR
# define Q_COMPILER_UNIFORM_INIT
# endif
# if _MSC_VER >= 1910
# define Q_COMPILER_CONSTEXPR
# endif
// MSVC versions before 19.36 have a bug in C++20 comparison implementation.
// This leads to ambiguities when resolving comparison operator overloads in
// certain scenarios (the buggy MSVC versions were checked using our CI and
// compiler explorer).
# if _MSC_VER < 1936
# define Q_COMPILER_LACKS_THREE_WAY_COMPARE_SYMMETRY
# endif
// QTBUG-124376: MSVC is slow at compiling qstrnlen()
# define Q_COMPILER_SLOW_QSTRNLEN_COMPILATION
# endif /* __cplusplus */
#endif // defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
#ifdef Q_COMPILER_UNICODE_STRINGS
# define Q_STDLIB_UNICODE_STRINGS
#elif defined(__cplusplus)
# error "Qt6 requires Unicode string support in both the compiler and the standard library"
#endif
#ifdef __cplusplus
# include <utility>
# if defined(Q_OS_QNX)
// By default, QNX 7.0 uses libc++ (from LLVM) and
// QNX 6.X uses Dinkumware's libcpp. In all versions,
// it is also possible to use GNU libstdc++.
// For Dinkumware, some features must be disabled
// (mostly because of library problems).
// Dinkumware is assumed when __GLIBCXX__ (GNU libstdc++)
// and _LIBCPP_VERSION (LLVM libc++) are both absent.
# if !defined(__GLIBCXX__) && !defined(_LIBCPP_VERSION)
// Older versions of libcpp (QNX 650) do not support C++11 features
// _HAS_* macros are set to 1 by toolchains that actually include
// Dinkum C++11 libcpp.
# if !defined(_HAS_CPP0X) || !_HAS_CPP0X
// Disable C++11 features that depend on library support
# undef Q_COMPILER_INITIALIZER_LISTS
# undef Q_COMPILER_RVALUE_REFS
# undef Q_COMPILER_REF_QUALIFIERS
# undef Q_COMPILER_NOEXCEPT
// Disable C++11 library features:
# undef Q_STDLIB_UNICODE_STRINGS
# endif // !_HAS_CPP0X
# if !defined(_HAS_NULLPTR_T) || !_HAS_NULLPTR_T
# undef Q_COMPILER_NULLPTR
# endif //!_HAS_NULLPTR_T
# if !defined(_HAS_CONSTEXPR) || !_HAS_CONSTEXPR
// The libcpp is missing constexpr keywords on important functions like std::numeric_limits<>::min()
// Disable constexpr support on QNX even if the compiler supports it
# undef Q_COMPILER_CONSTEXPR
# endif // !_HAS_CONSTEXPR
# endif // !__GLIBCXX__ && !_LIBCPP_VERSION
# endif // Q_OS_QNX
# if defined(Q_CC_CLANG) && defined(Q_OS_DARWIN)
# if defined(__GNUC_LIBSTD__) && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402)
// Apple has not updated libstdc++ since 2007, which means it does not have
// <initializer_list> or std::move. Let's disable these features
# undef Q_COMPILER_INITIALIZER_LISTS
# undef Q_COMPILER_RVALUE_REFS
# undef Q_COMPILER_REF_QUALIFIERS
// Also disable <atomic>, since it's clearly not there
# undef Q_COMPILER_ATOMICS
# endif
# if defined(__cpp_lib_memory_resource) \
&& ((defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 140000) \
|| (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 170000))
# undef __cpp_lib_memory_resource // Only supported on macOS 14 and iOS 17
# endif
# endif // defined(Q_CC_CLANG) && defined(Q_OS_DARWIN)
#endif
// Don't break code that is already using Q_COMPILER_DEFAULT_DELETE_MEMBERS
#if defined(Q_COMPILER_DEFAULT_MEMBERS) && defined(Q_COMPILER_DELETE_MEMBERS)
# define Q_COMPILER_DEFAULT_DELETE_MEMBERS
#endif
/*
* Compatibility macros for C++11/14 keywords and expressions.
* Don't use in new code and port away whenever you have a chance.
*/
#define Q_ALIGNOF(x) alignof(x)
#define Q_DECL_ALIGN(n) alignas(n)
#define Q_DECL_NOTHROW Q_DECL_NOEXCEPT
#ifdef __cplusplus
# define Q_CONSTEXPR constexpr
# define Q_DECL_CONSTEXPR constexpr
# define Q_DECL_EQ_DEFAULT = default
# define Q_DECL_EQ_DELETE = delete
# define Q_DECL_FINAL final
# define Q_DECL_NOEXCEPT noexcept
# define Q_DECL_NOEXCEPT_EXPR(x) noexcept(x)
# define Q_DECL_OVERRIDE override
# define Q_DECL_RELAXED_CONSTEXPR constexpr
# define Q_NULLPTR nullptr
# define Q_RELAXED_CONSTEXPR constexpr
#else
# define Q_CONSTEXPR const
# define Q_DECL_CONSTEXPR
# define Q_DECL_RELAXED_CONSTEXPR
# define Q_NULLPTR NULL
# define Q_RELAXED_CONSTEXPR const
# ifdef Q_CC_GNU
# define Q_DECL_NOEXCEPT __attribute__((__nothrow__))
# else
# define Q_DECL_NOEXCEPT
# endif
#endif
#if __has_cpp_attribute(nodiscard) && (!defined(Q_CC_CLANG) || __cplusplus > 201402L) // P0188R1
// Can't use [[nodiscard]] with Clang and C++11/14, see https://bugs.llvm.org/show_bug.cgi?id=33518
# undef Q_REQUIRED_RESULT
# define Q_REQUIRED_RESULT [[nodiscard]]
#endif
#if __has_cpp_attribute(nodiscard) >= 201907L /* used for both P1771 and P1301... */
// [[nodiscard]] constructor (P1771)
# ifndef Q_NODISCARD_CTOR
# define Q_NODISCARD_CTOR [[nodiscard]]
# endif
// [[nodiscard("reason")]] (P1301)
# ifndef Q_NODISCARD_X
# define Q_NODISCARD_X(message) [[nodiscard(message)]]
# endif
# ifndef Q_NODISCARD_CTOR_X
# define Q_NODISCARD_CTOR_X(message) [[nodiscard(message)]]
# endif
#endif
#if __has_cpp_attribute(maybe_unused)
# undef Q_DECL_UNUSED
# define Q_DECL_UNUSED [[maybe_unused]]
#endif
#if __has_cpp_attribute(noreturn)
# undef Q_NORETURN
# define Q_NORETURN [[noreturn]]
#endif
#if __has_cpp_attribute(deprecated)
# ifdef Q_DECL_DEPRECATED
# undef Q_DECL_DEPRECATED
# endif
# ifdef Q_DECL_DEPRECATED_X
# undef Q_DECL_DEPRECATED_X
# endif
# define Q_DECL_DEPRECATED [[deprecated]]
# define Q_DECL_DEPRECATED_X(x) [[deprecated(x)]]
#endif
#define Q_DECL_ENUMERATOR_DEPRECATED Q_DECL_DEPRECATED
#define Q_DECL_ENUMERATOR_DEPRECATED_X(x) Q_DECL_DEPRECATED_X(x)
/*
* Fallback macros to certain compiler features
*/
#ifndef Q_NORETURN
# define Q_NORETURN
#endif
#ifndef Q_LIKELY
# define Q_LIKELY(x) (x)
#endif
#ifndef Q_UNLIKELY
# define Q_UNLIKELY(x) (x)
#endif
#ifndef Q_ASSUME_IMPL
# define Q_ASSUME_IMPL(expr) qt_noop()
#endif
#ifndef Q_UNREACHABLE_IMPL
# define Q_UNREACHABLE_IMPL() qt_noop()
#endif
#ifndef Q_ALLOC_SIZE
# define Q_ALLOC_SIZE(x)
#endif
#ifndef Q_REQUIRED_RESULT
# define Q_REQUIRED_RESULT
#endif
#ifndef Q_NODISCARD_X
# define Q_NODISCARD_X(message) Q_REQUIRED_RESULT
#endif
#ifndef Q_NODISCARD_CTOR
# define Q_NODISCARD_CTOR
#endif
#ifndef Q_NODISCARD_CTOR_X
# define Q_NODISCARD_CTOR_X(message) Q_NODISCARD_CTOR
#endif
#ifndef Q_DECL_DEPRECATED
# define Q_DECL_DEPRECATED
#endif
#ifndef Q_DECL_VARIABLE_DEPRECATED
# define Q_DECL_VARIABLE_DEPRECATED Q_DECL_DEPRECATED
#endif
#ifndef Q_DECL_DEPRECATED_X
# define Q_DECL_DEPRECATED_X(text) Q_DECL_DEPRECATED
#endif
#ifndef Q_DECL_EXPORT
# define Q_DECL_EXPORT
#endif
#ifndef Q_DECL_EXPORT_OVERRIDABLE
# define Q_DECL_EXPORT_OVERRIDABLE Q_DECL_EXPORT
#endif
#ifndef Q_DECL_IMPORT
# define Q_DECL_IMPORT
#endif
#ifndef Q_DECL_HIDDEN
# define Q_DECL_HIDDEN
#endif
#ifndef Q_DECL_UNUSED
# define Q_DECL_UNUSED
#endif
#ifndef Q_DECL_UNUSED_MEMBER
# define Q_DECL_UNUSED_MEMBER
#endif
#ifndef Q_FUNC_INFO
# if defined(Q_OS_SOLARIS) || defined(Q_CC_XLC)
# define Q_FUNC_INFO __FILE__ "(line number unavailable)"
# else
# define Q_FUNC_INFO __FILE__ ":" QT_STRINGIFY(__LINE__)
# endif
#endif
#ifndef Q_DECL_CF_RETURNS_RETAINED
# define Q_DECL_CF_RETURNS_RETAINED
#endif
#ifndef Q_DECL_NS_RETURNS_AUTORELEASED
# define Q_DECL_NS_RETURNS_AUTORELEASED
#endif
#ifndef Q_DECL_PURE_FUNCTION
# define Q_DECL_PURE_FUNCTION
#endif
#ifndef Q_DECL_CONST_FUNCTION
# define Q_DECL_CONST_FUNCTION Q_DECL_PURE_FUNCTION
#endif
#ifndef Q_DECL_COLD_FUNCTION
# define Q_DECL_COLD_FUNCTION
#endif
#ifndef QT_MAKE_UNCHECKED_ARRAY_ITERATOR
# define QT_MAKE_UNCHECKED_ARRAY_ITERATOR(x) (x)
#endif
#ifndef QT_MAKE_CHECKED_ARRAY_ITERATOR
# define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) (x)
#endif
/*
* "Weak overloads" - makes an otherwise confliciting overload weaker
* (by making it a template)
*/
#ifndef Q_QDOC
# define Q_WEAK_OVERLOAD template <typename = void>
#else
# define Q_WEAK_OVERLOAD
#endif
/*
* If one wants to add functions that use post-C++17 APIs, one needs to:
*
* 1) make them fully inline; and
* 2) guard them using the necessary feature-testing macros.
*
* This decouples the C++ version used to build Qt with the one used by
* end-user applications; Qt and the application can either choose any C++
* version.
*
* A problem arises on MSVC for member functions of exported classes. Client
* code that tries to use such a function will see it as exported, and simply
* try to consume the function's *symbol*. However, if Qt has been built in
* C++17, it won't have such a symbol, and linking will fail.
*
* The workaround: declare such functions as function templates.
* (Obviously a function template does not need this marker.)
*/
#ifndef Q_QDOC
# define QT_POST_CXX17_API_IN_EXPORTED_CLASS template <typename = void>
#else
# define QT_POST_CXX17_API_IN_EXPORTED_CLASS
#endif
/*
* Warning/diagnostic handling
*/
#define QT_DO_PRAGMA(text) _Pragma(#text)
#if defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
# undef QT_DO_PRAGMA /* not needed */
# define QT_WARNING_PUSH __pragma(warning(push))
# define QT_WARNING_POP __pragma(warning(pop))
# define QT_WARNING_DISABLE_MSVC(number) __pragma(warning(disable: number))
# define QT_WARNING_DISABLE_INTEL(number)
# define QT_WARNING_DISABLE_CLANG(text)
# define QT_WARNING_DISABLE_GCC(text)
# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_MSVC(4996)
# define QT_WARNING_DISABLE_FLOAT_COMPARE
# define QT_WARNING_DISABLE_INVALID_OFFSETOF
#elif defined(Q_CC_CLANG)
# define QT_WARNING_PUSH QT_DO_PRAGMA(clang diagnostic push)
# define QT_WARNING_POP QT_DO_PRAGMA(clang diagnostic pop)
# define QT_WARNING_DISABLE_CLANG(text) QT_DO_PRAGMA(clang diagnostic ignored text)
# define QT_WARNING_DISABLE_GCC(text)
# define QT_WARNING_DISABLE_INTEL(number)
# define QT_WARNING_DISABLE_MSVC(number)
# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_CLANG("-Wdeprecated-declarations")
# define QT_WARNING_DISABLE_FLOAT_COMPARE QT_WARNING_DISABLE_CLANG("-Wfloat-equal")
# define QT_WARNING_DISABLE_INVALID_OFFSETOF QT_WARNING_DISABLE_CLANG("-Winvalid-offsetof")
#elif defined(Q_CC_GNU) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 406)
# define QT_WARNING_PUSH QT_DO_PRAGMA(GCC diagnostic push)
# define QT_WARNING_POP QT_DO_PRAGMA(GCC diagnostic pop)
# define QT_WARNING_DISABLE_GCC(text) QT_DO_PRAGMA(GCC diagnostic ignored text)
# define QT_WARNING_DISABLE_CLANG(text)
# define QT_WARNING_DISABLE_INTEL(number)
# define QT_WARNING_DISABLE_MSVC(number)
# define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_GCC("-Wdeprecated-declarations")
# define QT_WARNING_DISABLE_FLOAT_COMPARE QT_WARNING_DISABLE_GCC("-Wfloat-equal")
# define QT_WARNING_DISABLE_INVALID_OFFSETOF QT_WARNING_DISABLE_GCC("-Winvalid-offsetof")
#else // All other compilers, GCC < 4.6 and MSVC < 2008
# define QT_WARNING_DISABLE_GCC(text)
# define QT_WARNING_PUSH
# define QT_WARNING_POP
# define QT_WARNING_DISABLE_INTEL(number)
# define QT_WARNING_DISABLE_MSVC(number)
# define QT_WARNING_DISABLE_CLANG(text)
# define QT_WARNING_DISABLE_GCC(text)
# define QT_WARNING_DISABLE_DEPRECATED
# define QT_WARNING_DISABLE_FLOAT_COMPARE
# define QT_WARNING_DISABLE_INVALID_OFFSETOF
#endif
#ifndef QT_IGNORE_DEPRECATIONS
#define QT_IGNORE_DEPRECATIONS(statement) \
QT_WARNING_PUSH \
QT_WARNING_DISABLE_DEPRECATED \
statement \
QT_WARNING_POP
#endif
// The body must be a statement:
#define Q_CAST_IGNORE_ALIGN(body) QT_WARNING_PUSH QT_WARNING_DISABLE_GCC("-Wcast-align") body QT_WARNING_POP
// This macro can be used to calculate member offsets for types with a non standard layout.
// It uses the fact that offsetof() is allowed to support those types since C++17 as an optional
// feature. All our compilers do support this, but some issue a warning, so we wrap the offsetof()
// call in a macro that disables the compiler warning.
#define Q_OFFSETOF(Class, member) \
[]() -> size_t { \
QT_WARNING_PUSH QT_WARNING_DISABLE_INVALID_OFFSETOF \
return offsetof(Class, member); \
QT_WARNING_POP \
}()
/*
Proper for-scoping in MIPSpro CC
*/
#ifndef QT_NO_KEYWORDS
# if defined(Q_CC_MIPS) || (defined(Q_CC_HPACC) && defined(__ia64))
# define for if (0) {} else for
# endif
#endif
#ifdef Q_COMPILER_RVALUE_REFS
#define qMove(x) std::move(x)
#else
#define qMove(x) (x)
#endif
#if defined(__cplusplus)
#if __has_cpp_attribute(clang::fallthrough)
# define Q_FALLTHROUGH() [[clang::fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
# define Q_FALLTHROUGH() [[gnu::fallthrough]]
#elif __has_cpp_attribute(fallthrough)
# define Q_FALLTHROUGH() [[fallthrough]]
#endif
#endif
#ifndef Q_FALLTHROUGH
# ifdef Q_CC_GNU
# define Q_FALLTHROUGH() __attribute__((fallthrough))
# else
# define Q_FALLTHROUGH() (void)0
# endif
#endif
/*
Sanitize compiler feature availability
*/
#if !defined(Q_PROCESSOR_X86)
# undef QT_COMPILER_SUPPORTS_SSE2
# undef QT_COMPILER_SUPPORTS_SSE3
# undef QT_COMPILER_SUPPORTS_SSSE3
# undef QT_COMPILER_SUPPORTS_SSE4_1
# undef QT_COMPILER_SUPPORTS_SSE4_2
# undef QT_COMPILER_SUPPORTS_AVX
# undef QT_COMPILER_SUPPORTS_AVX2
# undef QT_COMPILER_SUPPORTS_F16C
#endif
#if !defined(Q_PROCESSOR_ARM)
# undef QT_COMPILER_SUPPORTS_NEON
#endif
#if !defined(Q_PROCESSOR_MIPS)
# undef QT_COMPILER_SUPPORTS_MIPS_DSP
# undef QT_COMPILER_SUPPORTS_MIPS_DSPR2
#endif
// Compiler version check
#if defined(__cplusplus) && (__cplusplus < 201703L)
# ifdef Q_CC_MSVC
# error "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler."
# else
# error "Qt requires a C++17 compiler"
# endif
#endif // __cplusplus
#if defined(__cplusplus) && defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
# if Q_CC_MSVC < 1927
// Check below only works with 16.7 or newer
# error "Qt requires at least Visual Studio 2019 version 16.7 (VC++ version 14.27). Please upgrade."
# endif
// On MSVC we require /permissive- set by user code. Check that we are
// under its rules -- for instance, check that std::nullptr_t->bool is
// not an implicit conversion, as per
// https://docs.microsoft.com/en-us/cpp/overview/cpp-conformance-improvements?view=msvc-160#nullptr_t-is-only-convertible-to-bool-as-a-direct-initialization
static_assert(!std::is_convertible_v<std::nullptr_t, bool>,
"On MSVC you must pass the /permissive- option to the compiler.");
#endif
#if defined(QT_BOOTSTRAPPED) || defined(QT_USE_PROTECTED_VISIBILITY) || !defined(__ELF__) || defined(__PIC__)
// this is fine
#elif defined(QT_REDUCE_RELOCATIONS)
# error "You must build your code with position independent code if Qt was configured with -reduce-relocations. "\
"Compile your code with -fPIC (and not with -fPIE)."
#endif
#ifdef Q_PROCESSOR_X86_32
# if defined(Q_CC_GNU)
# define QT_FASTCALL __attribute__((regparm(3)))
# elif defined(Q_CC_MSVC)
# define QT_FASTCALL __fastcall
# else
# define QT_FASTCALL
# endif
#else
# define QT_FASTCALL
#endif
// enable gcc warnings for printf-style functions
#if defined(Q_CC_GNU) && !defined(__INSURE__)
# if defined(Q_CC_MINGW) && !defined(Q_CC_CLANG)
# define Q_ATTRIBUTE_FORMAT_PRINTF(A, B) \
__attribute__((format(gnu_printf, (A), (B))))
# else
# define Q_ATTRIBUTE_FORMAT_PRINTF(A, B) \
__attribute__((format(printf, (A), (B))))
# endif
#else
# define Q_ATTRIBUTE_FORMAT_PRINTF(A, B)
#endif
#ifdef Q_CC_MSVC
# define Q_NEVER_INLINE __declspec(noinline)
# define Q_ALWAYS_INLINE __forceinline
#elif defined(Q_CC_GNU)
# define Q_NEVER_INLINE __attribute__((noinline))
# define Q_ALWAYS_INLINE inline __attribute__((always_inline))
#else
# define Q_NEVER_INLINE
# define Q_ALWAYS_INLINE inline
#endif
//defines the type for the WNDPROC on windows
//the alignment needs to be forced for sse2 to not crash with mingw
#if defined(Q_OS_WIN)
# if defined(Q_CC_MINGW) && defined(Q_PROCESSOR_X86_32)
# define QT_ENSURE_STACK_ALIGNED_FOR_SSE __attribute__ ((force_align_arg_pointer))
# else
# define QT_ENSURE_STACK_ALIGNED_FOR_SSE
# endif
# define QT_WIN_CALLBACK CALLBACK QT_ENSURE_STACK_ALIGNED_FOR_SSE
#endif
#ifdef __cpp_conditional_explicit
#define Q_IMPLICIT explicit(false)
#else
#define Q_IMPLICIT
#endif
#if defined(__cplusplus)
#ifdef __cpp_constinit
# if defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
// https://developercommunity.visualstudio.com/t/C:-constinit-for-an-optional-fails-if-/1406069
# define Q_CONSTINIT
# else
# define Q_CONSTINIT constinit
# endif
#elif defined(__has_cpp_attribute) && __has_cpp_attribute(clang::require_constant_initialization)
# define Q_CONSTINIT [[clang::require_constant_initialization]]
#elif defined(Q_CC_GNU_ONLY) && Q_CC_GNU >= 1000
# define Q_CONSTINIT __constinit
#else
# define Q_CONSTINIT
#endif
#ifndef Q_OUTOFLINE_TEMPLATE
# define Q_OUTOFLINE_TEMPLATE
#endif
#ifndef Q_INLINE_TEMPLATE
# define Q_INLINE_TEMPLATE inline
#endif
/*
Avoid some particularly useless warnings from some stupid compilers.
To get ALL C++ compiler warnings, define QT_CC_WARNINGS or comment out
the line "#define QT_NO_WARNINGS". See also QTBUG-26877.
*/
#if !defined(QT_CC_WARNINGS)
# define QT_NO_WARNINGS
#endif
#if defined(QT_NO_WARNINGS)
# if defined(Q_CC_MSVC)
QT_WARNING_DISABLE_MSVC(4251) /* class 'type' needs to have dll-interface to be used by clients of class 'type2' */
QT_WARNING_DISABLE_MSVC(4244) /* conversion from 'type1' to 'type2', possible loss of data */
QT_WARNING_DISABLE_MSVC(4275) /* non - DLL-interface classkey 'identifier' used as base for DLL-interface classkey 'identifier' */
QT_WARNING_DISABLE_MSVC(4514) /* unreferenced inline function has been removed */
QT_WARNING_DISABLE_MSVC(4800) /* 'type' : forcing value to bool 'true' or 'false' (performance warning) */
QT_WARNING_DISABLE_MSVC(4097) /* typedef-name 'identifier1' used as synonym for class-name 'identifier2' */
QT_WARNING_DISABLE_MSVC(4706) /* assignment within conditional expression */
QT_WARNING_DISABLE_MSVC(4355) /* 'this' : used in base member initializer list */
QT_WARNING_DISABLE_MSVC(4710) /* function not inlined */
QT_WARNING_DISABLE_MSVC(4530) /* C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc */
# elif defined(Q_CC_BOR)
# pragma option -w-inl
# pragma option -w-aus
# pragma warn -inl
# pragma warn -pia
# pragma warn -ccc
# pragma warn -rch
# pragma warn -sig
# endif
#endif
#if !defined(QT_NO_EXCEPTIONS)
# if !defined(Q_MOC_RUN)
# if defined(Q_CC_GNU) && !defined(__cpp_exceptions)
# define QT_NO_EXCEPTIONS
# endif
# elif defined(QT_BOOTSTRAPPED)
# define QT_NO_EXCEPTIONS
# endif
#endif
// libstdc++ shipped with gcc < 11 does not have a fix for defect LWG 3346
#if __cplusplus >= 202002L && (!defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE >= 11)
# define QT_COMPILER_HAS_LWG3346
#endif
#if defined(__cplusplus) && __cplusplus >= 202002L // P0846 doesn't have a feature macro :/
# if !defined(Q_CC_MSVC_ONLY) || Q_CC_MSVC >= 1939 // claims C++20 support but lacks P0846
// 1939 is known to work
// 1936 is known to fail
# define QT_COMPILER_HAS_P0846
# endif
#endif
#ifdef QT_COMPILER_HAS_P0846
# define QT_ENABLE_P0846_SEMANTICS_FOR(func)
#else
class QT_CLASS_JUST_FOR_P0846_SIMULATION;
# define QT_ENABLE_P0846_SEMANTICS_FOR(func) \
template <typename T> \
void func (QT_CLASS_JUST_FOR_P0846_SIMULATION *); \
/* end */
#endif // !P0846
#endif // __cplusplus
#endif // QCOMPILERDETECTION_H
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