// 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 #include #include /* 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 /* 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_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 is present (this header includes it). * * For a full listing of feature test macros, see * https://en.cppreference.com/w/cpp/feature_test * 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() # 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() # 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 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() # 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 # 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 // 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 , 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) #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, // https://github.com/llvm/llvm-project/issues/109311 # 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 /* * 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 #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 #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 #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 // 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, "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) // 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_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 \ void func (QT_CLASS_JUST_FOR_P0846_SIMULATION *); \ /* end */ #endif // !P0846 #endif // __cplusplus #endif // QCOMPILERDETECTION_H