Revision control
++ // 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
++ // Qt-Security score:significant reason:default
++
++ #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
++ # ifdef Q_CC_MSVC_ONLY
++ # define Q_COMPILER_COMPLAINS_ABOUT_RETURN_AFTER_UNREACHABLE
++ # endif
++
++ #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__ >= 17000319 // Xcode 26.0
++ # define Q_CC_CLANG 1915
++ # elif __apple_build_version__ >= 17000013 // Xcode 16.3
++ # define Q_CC_CLANG 1914
++ # elif __apple_build_version__ >= 16000026 // Xcode 16.0
++ # define Q_CC_CLANG 1706
++ # elif __apple_build_version__ >= 15000040 // Xcode 15.0
++ # define Q_CC_CLANG 1600
++ # elif __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))
++ # define Q_PACKED __attribute__ ((__packed__))
++ # ifndef __ARM_EABI__
++ # define QT_NO_ARM_EABI
++ # 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
++ # 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
++ * 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_c_attribute
++ # define __has_c_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
++
++ /*
++ * 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
++ * Exceptions:
++ * Q_DECL_CONSTEXPR_DTOR constexpr in C++20 for explicit destructors __cpp_constexpr >= 201907L
++ * Q_CONSTEXPR_DTOR constexpr in C++20 for variables __cpp_constexpr >= 201907L otherwise const
++ * Q_DECL_EQ_DELETE_X(message) = delete("reason"), __cpp_deleted_function >= 202403L
++ *
++ * 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:
++ 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 (defined(__cplusplus) && __has_cpp_attribute(nodiscard) /* P0188R1 */) || \
++ (!defined(__cplusplus) && __has_c_attribute(nodiscard) /* N2267 */)
++ # undef Q_REQUIRED_RESULT
++ # define Q_REQUIRED_RESULT [[nodiscard]]
++ #endif
++
++ #if (defined(__cplusplus) && __has_cpp_attribute(nodiscard) >= 201907L /* used for both P1771 and P1301... */) \
++ || (!defined(__cplusplus) && __has_c_attribute(nodiscard) /* N2448 */)
++ // [[nodiscard]] constructor (P1771)
++ # ifndef Q_NODISCARD_CTOR
++ # define Q_NODISCARD_CTOR [[nodiscard]]
++ # endif
++ // [[nodiscard("reason")]] (P1301, N2448 for C)
++ # 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 (defined(__cplusplus) && __has_cpp_attribute(maybe_unused)) || \
++ (!defined(__cplusplus) && __has_c_attribute(maybe_unused))
++ # undef Q_DECL_UNUSED
++ # define Q_DECL_UNUSED [[maybe_unused]]
++ #endif
++
++ #if (defined(__cplusplus) && __has_cpp_attribute(noreturn)) || \
++ (!defined(__cplusplus) && __has_c_attribute(noreturn))
++ # undef Q_NORETURN
++ # define Q_NORETURN [[noreturn]]
++ #endif
++
++ #if defined(Q_CC_GNU_ONLY) && Q_CC_GNU < 1300
++ // Leave Q_DECL_DEPRECATED defined with __attribute__ because
++ // GCC 12 and earlier has issues combining __attribute__ and [[]] syntax.
++ // We phrase the deprecation macros as __attribute__ so that they can be combined with visibility.
++ #elif (defined(__cplusplus) && __has_cpp_attribute(deprecated)) || \
++ (!defined(__cplusplus) && __has_c_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)
++
++ #ifdef Q_CC_CLANG /* preferred, since Clang's supports `text` and MSVC's doesn't */
++ # define Q_DECL_DEPRECATED_MACRO(macro, text) QT_DO_PRAGMA(clang deprecated(macro, text))
++ #elif defined(Q_CC_MSVC)
++ # define Q_DECL_DEPRECATED_MACRO(macro, text) __pragma(deprecated(#macro))
++ #endif
++
++ #ifndef Q_DECL_CONSTEXPR_DTOR
++ # if __cpp_constexpr >= 201907L
++ # define Q_DECL_CONSTEXPR_DTOR constexpr
++ # else
++ # define Q_DECL_CONSTEXPR_DTOR inline
++ # endif
++ #endif
++
++ #ifndef Q_CONSTEXPR_DTOR
++ # if __cpp_constexpr >= 201907L
++ # define Q_CONSTEXPR_DTOR constexpr
++ # else
++ # define Q_CONSTEXPR_DTOR const
++ # endif
++ #endif
++
++ #ifndef Q_DECL_EQ_DELETE_X
++ // Clang < 20 advertises the feature-testing macro but issues a warning
++ // if one isn't also using C++26,
++ # if defined(__cpp_deleted_function) && __cpp_deleted_function >= 202403L \
++ && (!defined(Q_CC_CLANG_ONLY) || Q_CC_CLANG_ONLY >= 2010 || __cplusplus > 202302L) // C++26
++ # define Q_DECL_EQ_DELETE_X(reason) = delete(reason)
++ # else
++ # define Q_DECL_EQ_DELETE_X(reason) = delete
++ # endif
++ #endif
++
++ #ifndef Q_LIKELY_BRANCH
++ # if __has_cpp_attribute(likely)
++ # define Q_LIKELY_BRANCH [[likely]]
++ # define Q_UNLIKELY_BRANCH [[unlikely]]
++ # else
++ # define Q_LIKELY_BRANCH
++ # define Q_UNLIKELY_BRANCH
++ # endif
++ #endif
++
++ #ifndef Q_DECL_NONBLOCKING_FUNCTION
++ # if defined(__cplusplus)
++ # if __has_cpp_attribute(clang::nonblocking)
++ # define Q_DECL_NONBLOCKING_FUNCTION [[clang::nonblocking]]
++ # else
++ # define Q_DECL_NONBLOCKING_FUNCTION
++ # endif
++ # else
++ # define Q_DECL_NONBLOCKING_FUNCTION
++ # endif
++ #endif
++
++ #ifndef Q_DECL_NONALLOCATING_FUNCTION
++ # if defined(__cplusplus)
++ # if __has_cpp_attribute(clang::nonallocating)
++ # define Q_DECL_NONALLOCATING_FUNCTION [[clang::nonallocating]]
++ # else
++ # define Q_DECL_NONALLOCATING_FUNCTION
++ # endif
++ # else
++ # define Q_DECL_NONALLOCATING_FUNCTION
++ # endif
++ #endif
++
++ /*
++ * 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_DEPRECATED_MACRO
++ # define Q_DECL_DEPRECATED_MACRO(macro, text)
++ #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) \
++ QT_WARNING_DISABLE_MSVC(4995)
++ # 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)
++ # if defined(__has_warning) && __has_warning("-Wdeprecated-pragma")
++ # define QT_WARNING_DISABLE_DEPRECATED_MACRO QT_WARNING_DISABLE_CLANG("-Wdeprecated-pragma")
++ # else
++ # define QT_WARNING_DISABLE_DEPRECATED_MACRO
++ # endif
++ # define QT_WARNING_DISABLE_DEPRECATED QT_WARNING_DISABLE_CLANG("-Wdeprecated-declarations") \
++ QT_WARNING_DISABLE_DEPRECATED_MACRO
++ # 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
++ /* GCC and (older) Clang differ in the name of frame-larger-than: */
++ #define QT_WARNING_DISABLE_LARGE_STACK_FRAME \
++ QT_WARNING_DISABLE_CLANG("-Wframe-larger-than") \
++ QT_WARNING_DISABLE_GCC("-Wframe-larger-than=") \
++ /* end */
++
++ #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
++ #else // !defined(__cplusplus)
++ # if __has_c_attribute(fallthrough)
++ # define Q_FALLTHROUGH() [[fallthrough]]
++ # endif
++ #endif // !defined(__cplusplus)
++ #ifndef Q_FALLTHROUGH
++ # ifdef Q_CC_GNU
++ # define Q_FALLTHROUGH() __attribute__((fallthrough))
++ # else
++ # define Q_FALLTHROUGH() (void)0
++ # endif
++ #endif
++
++ #if defined(__has_attribute) && __has_attribute(uninitialized)
++ # define Q_DECL_UNINITIALIZED __attribute__((uninitialized))
++ #else
++ # define Q_DECL_UNINITIALIZED
++ #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 < 1930
++ # error "Qt requires at least Visual Studio 2022 (MSVC version 19.30 or newer). 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
++ 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(__PIE__)
++ # error "-fPIE is not sufficient if Qt was configured with the -DFEATURE_reduce_relocations=ON "\
++ "CMake option. Compile your code with -fPIC and without -fPIE or compile Qt with "\
++ "-DFEATURE_no_direct_extern_access=ON."
++ #elif defined(QT_REDUCE_RELOCATIONS)
++ # error "You must build your code with position independent code if Qt was configured with the "\
++ "-DFEATURE_reduce_relocations=ON CMake option. Compile your code with -fPIC and "\
++ "without -fPIE or compile Qt with -DFEATURE_no_direct_extern_access=ON."
++ #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) && _MSC_VER < 1940 && !defined(Q_CC_CLANG)
++ # 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_CLANG_ONLY)
++ # if __has_warning("-Wcharacter-conversion")
++ QT_WARNING_DISABLE_CLANG("-Wcharacter-conversion") /* until https://github.com/llvm/llvm-project/issues/163719 is fixed */
++ # endif
++ # 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