Configurations/CommonBase.xcconfig - external/github.com/WebKit/webkit - Git at Google

 // Copyright (C) 2022-2025 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1. Redistributions of source code must retain the above copyright
 //    notice, this list of conditions and the following disclaimer.
 // 2. Redistributions in binary form must reproduce the above copyright
 //    notice, this list of conditions and the following disclaimer in the
 //    documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 // PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #include? "../../Internal/Configurations/HaveInternalSDK.xcconfig"
 #include? "<DEVELOPER_DIR>/AppleInternal/XcodeConfig/PlatformSupport.xcconfig"
 #include "Sanitizers.xcconfig"
 #include "SDKVariant.xcconfig"
 #include "WebKitProjectPaths.xcconfig"
 #include "SDKAdditions.xcconfig"

 WK_ENABLE_SLOW_BUILD_VERIFICATION = $(WK_ENABLE_SLOW_BUILD_VERIFICATION_$(CONFIGURATION));
 WK_ENABLE_SLOW_BUILD_VERIFICATION_Production = YES;
 __ALLOW_EXCLUDED_USER_SCRIPT_SANDBOXING_PHASE_NAMES = YES;

 // Prefix Definitions
 //
 // WK_COMMON_ prefix is used to define variables in CommonBase.xcconfig
 // that may be used in project xcconfig files when $(inherited) is not
 // used.
 // Examples: WK_COMMON_OTHER_{CFLAGS,CPLUSPLUSFLAGS,LDFLAGS}.
 //
 // WK_DEFAULT_ prefix is used in Base.xcconfig project files for
 // single-value variables that may be overridden in CommonBase.xcconfig.
 // Example: WK_DEFAULT_GCC_OPTIMIZATION_LEVEL.

 GCC_OPTIMIZATION_LEVEL = $(WK_GCC_OPTIMIZATION_LEVEL_SANITIZER_OVERRIDE_$(WK_ANY_SANITIZER_ENABLED));
 WK_GCC_OPTIMIZATION_LEVEL_SANITIZER_OVERRIDE_NO = $(WK_DEFAULT_GCC_OPTIMIZATION_LEVEL);
 WK_GCC_OPTIMIZATION_LEVEL_SANITIZER_OVERRIDE_YES = $(WK_SANITIZER_GCC_OPTIMIZATION_LEVEL);

 WK_OS_UNFAIR_LOCK_INLINE_CFLAGS = $(WK_OS_UNFAIR_LOCK_INLINE_CFLAGS_$(USE_INTERNAL_SDK));
 WK_OS_UNFAIR_LOCK_INLINE_CFLAGS_YES = OS_UNFAIR_LOCK_INLINE=1;

 WK_ENGINEERING_BUILD = $(WK_ENGINEERING_BUILD_$(CONFIGURATION));
 WK_ENGINEERING_BUILD_Debug = 1;
 WK_ENGINEERING_BUILD_Release = 1;
 WK_ENGINEERING_BUILD_Production = 0;

 WK_GCC_PREPROCESSOR_DEFINITIONS = $(WK_GCC_PREPROCESSOR_DEFINITIONS_$(USE_INTERNAL_SDK)) ENGINEERING_BUILD=$(WK_ENGINEERING_BUILD) $(WK_PRESERVE_MOST_DEFINES);
 WK_GCC_PREPROCESSOR_DEFINITIONS_YES = $(WK_OS_UNFAIR_LOCK_INLINE_CFLAGS) __ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0;
 GCC_PREPROCESSOR_DEFINITIONS = $(inherited) $(WK_GCC_PREPROCESSOR_DEFINITIONS);

 // PRESERVE_MOST is only profitable under LTO: without it, hot/cold splitting gives the extracted
 // cold region the default calling convention, so the preserve_most parent saves X9-X15 on its hot
 // path. See rdar://183555125.
 WK_PRESERVE_MOST_DEFINES = $(WK_PRESERVE_MOST_DEFINES_$(LLVM_LTO));
 WK_PRESERVE_MOST_DEFINES_YES = HAVE_PRESERVE_MOST=1;
 WK_PRESERVE_MOST_DEFINES_YES_THIN = HAVE_PRESERVE_MOST=1;

 WK_COMMON_OTHER_CFLAGS = $(WK_AVAILABILITY_OVERLAY_FLAGS) $(WK_SANITIZER_OTHER_CFLAGS) $(WK_COMMON_OTHER_CFLAGS_PGO_$(WK_OR_$(WK_ENABLE_PGO_USE)_$(ENABLE_LLVM_PROFILE_GENERATION)));
 // Work around rdar://141760829 until the fix is available on all clang-1700
 // based toolchains.
 // Fix from rdar://178983382 to avoid symbol module prefix differences causing performance loss.
 WK_COMMON_OTHER_CFLAGS_PGO_YES = -mllvm -system-headers-coverage -mllvm -static-func-full-module-prefix=false;

 OTHER_CFLAGS = $(inherited) $(WK_COMMON_OTHER_CFLAGS);

 WK_COMMON_OTHER_CPLUSPLUSFLAGS = $(WK_AVAILABILITY_OVERLAY_FLAGS) $(WK_LIBCPP_ASSERTIONS_CFLAGS);
 OTHER_CPLUSPLUSFLAGS = $(inherited) $(WK_COMMON_OTHER_CPLUSPLUSFLAGS);

 _EXPERIMENTAL_SWIFT_EXPLICIT_MODULES = YES;

 WK_DEFAULT_COMPILATION_CACHE_ENABLE_CACHING = YES;
 COMPILATION_CACHE_ENABLE_CACHING = $(WK_DEFAULT_COMPILATION_CACHE_ENABLE_CACHING);

 FUSE_BUILD_SCRIPT_PHASES = YES;

 WK_COMMON_OTHER_LDFLAGS = $(WK_SANITIZER_OTHER_LDFLAGS) $(WK_COMMON_OTHER_LDFLAGS_INSTRUMENTATION_$(ENABLE_LLVM_PROFILE_GENERATION));
 // Work around rdar://151083138 by moving the section the profiling runtime
 // mmaps to its own segment.
 WK_COMMON_OTHER_LDFLAGS_INSTRUMENTATION_YES = -Wl,-rename_section,__DATA,__llvm_prf_cnts,__MMAP_DATA,__llvm_prf_cnts;
 OTHER_LDFLAGS = $(inherited) $(WK_COMMON_OTHER_LDFLAGS);

 WK_COMMON_OTHER_TAPI_FLAGS = -x objective-c++ -std=c++2b -fno-rtti $(WK_SANITIZER_OTHER_TAPI_FLAGS) $(WK_AVAILABILITY_OVERLAY_FLAGS);
 OTHER_TAPI_FLAGS = $(inherited) $(WK_COMMON_OTHER_TAPI_FLAGS);

 WK_DEFAULT_WK_AUDIT_SPI[sdk=iphoneos*] = $(WK_AND_$(WK_NOT_$(WK_ANY_SANITIZER_ENABLED))_$(SUPPORTS_TEXT_BASED_API));
 // Explicitly disable auditing on other embedded platforms, because some SDKs
 // fall back to reading settings for iOS.
 WK_DEFAULT_WK_AUDIT_SPI[sdk=appletvos*] = ;
 WK_DEFAULT_WK_AUDIT_SPI[sdk=watchos*] = ;
 WK_DEFAULT_WK_AUDIT_SPI[sdk=xros*] = ;

 WK_AUDIT_SPI = $(WK_DEFAULT_WK_AUDIT_SPI);

 WK_OTHER_AUDIT_SPI_FLAGS = $(WK_OTHER_AUDIT_SPI_FLAGS_148943382) $(WK_OTHER_AUDIT_SPI_FLAGS_164901718) $(WK_OTHER_AUDIT_SPI_FLAGS_$(CONFIGURATION));
 WK_OTHER_AUDIT_SPI_FLAGS_Release = -DNDEBUG;
 WK_OTHER_AUDIT_SPI_FLAGS_Production = -DNDEBUG;
 WK_OTHER_AUDIT_SPI_FLAGS_148943382[sdk=iphoneos26.2.internal] = -DSDKDB_HAS_148943382;
 WK_OTHER_AUDIT_SPI_FLAGS_148943382[sdk=iphoneos26.3.internal] = -DSDKDB_HAS_148943382;
 WK_OTHER_AUDIT_SPI_FLAGS_164901718[sdk=iphoneos26.*.internal] = -DSDKDB_HAS_164901718;

 GCC_WARN_NON_VIRTUAL_DESTRUCTOR = YES;
 GCC_THREADSAFE_STATICS = YES;

 WK_COMMON_WARNING_CFLAGS = -Wall -Wc99-designator -Wconditional-uninitialized -Wextra -Wdeprecated-enum-enum-conversion -Wdeprecated-enum-float-conversion -Wenum-float-conversion -Wfinal-dtor-non-final-class -Wformat=2 -Wmisleading-indentation -Wpointer-to-int-cast -Wreorder-init-list -Wundef -Wunused-but-set-variable -Wvla -Werror=unguarded-availability;
 WARNING_CFLAGS = $(inherited) $(WK_COMMON_WARNING_CFLAGS) $(WK_SANITIZER_WARNING_CFLAGS);

 CLANG_CXX_STANDARD_LIBRARY_HARDENING = extensive;

 SWIFT_VERSION = 6.0;

 SWIFT_OPTIMIZATION_LEVEL = -O;
 SWIFT_OPTIMIZATION_LEVEL[config=Debug] = -Onone;

 // Enable strict memory safety in Swift.
 WK_SWIFT_MEMORY_SAFETY_FLAGS = -strict-memory-safety -enable-experimental-feature Lifetimes -enable-experimental-feature LifetimeDependence -enable-experimental-feature ImportNonPublicCxxMembers;

 // Treat memory safety warnings as errors.
 WK_SWIFT_MEMORY_SAFETY_ERROR_FLAGS = -Werror StrictMemorySafety -Werror ForeignReferenceType;
 // rdar://164903024: Work around false positives in some SDK versions.
 WK_SWIFT_MEMORY_SAFETY_ERROR_FLAGS[sdk=*26.3*] = ;

 // rdar://168992837 requires us to tell swiftc to tell clang how to set version macros
 // when interpreting C++ headers as clang modules, so that we get identical feature
 // enablement to C++ interpretation of those headers (otherwise we get mismatched data members etc.)
 WK_SWIFT_CLANG_DEPLOYMENT_TARGET = $(WK_SWIFT_CLANG_DEPLOYMENT_TARGET_$(WK_PLATFORM_NAME);
 WK_SWIFT_CLANG_DEPLOYMENT_TARGET_macosx = -clang-target $(CURRENT_ARCH)-apple-macos$(MACOSX_DEPLOYMENT_TARGET);

 // rdar://170129992: remove -track-system-dependencies when resolved
 OTHER_SWIFT_FLAGS = $(inherited) $(WK_AVAILABILITY_OVERLAY_SWIFT_FLAGS) -Xcc -fvisibility=hidden -Werror ExistentialAny -Werror NoUseUnstructuredThrowingTask -Werror NoUsage -enable-upcoming-feature ExistentialAny $(WK_SWIFT_MEMORY_SAFETY_FLAGS) $(WK_SWIFT_MEMORY_SAFETY_ERROR_FLAGS) $(WK_SWIFT_CLANG_DEPLOYMENT_TARGET) $(WK_SANITIZER_OTHER_SWIFT_FLAGS) -enable-upcoming-feature InternalImportsByDefault -enable-upcoming-feature MemberImportVisibility -track-system-dependencies -enable-experimental-feature ImportCxxMembersLazily;
 // Work around rdar://157581667 on affected toolchains.
 OTHER_SWIFT_FLAGS[sdk=*26.2*] = $(inherited) -Xcc -fno-modulemap-allow-subdirectory-search;
 OTHER_SWIFT_FLAGS[sdk=*26.3*] = $(inherited) -Xcc -fno-modulemap-allow-subdirectory-search;

 OTHER_LIBTOOLFLAGS = -no_warning_for_no_symbols;
	// Copyright (C) 2022-2025 Apple Inc. All rights reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions
	// are met:
	// 1. Redistributions of source code must retain the above copyright
	// notice, this list of conditions and the following disclaimer.
	// 2. Redistributions in binary form must reproduce the above copyright
	// notice, this list of conditions and the following disclaimer in the
	// documentation and/or other materials provided with the distribution.
	//
	// THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
	// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include? "../../Internal/Configurations/HaveInternalSDK.xcconfig"
	#include? "<DEVELOPER_DIR>/AppleInternal/XcodeConfig/PlatformSupport.xcconfig"
	#include "Sanitizers.xcconfig"
	#include "SDKVariant.xcconfig"
	#include "WebKitProjectPaths.xcconfig"
	#include "SDKAdditions.xcconfig"

	WK_ENABLE_SLOW_BUILD_VERIFICATION = $(WK_ENABLE_SLOW_BUILD_VERIFICATION_$(CONFIGURATION));
	WK_ENABLE_SLOW_BUILD_VERIFICATION_Production = YES;
	__ALLOW_EXCLUDED_USER_SCRIPT_SANDBOXING_PHASE_NAMES = YES;

	// Prefix Definitions
	//
	// WK_COMMON_ prefix is used to define variables in CommonBase.xcconfig
	// that may be used in project xcconfig files when $(inherited) is not
	// used.
	// Examples: WK_COMMON_OTHER_{CFLAGS,CPLUSPLUSFLAGS,LDFLAGS}.
	//
	// WK_DEFAULT_ prefix is used in Base.xcconfig project files for
	// single-value variables that may be overridden in CommonBase.xcconfig.
	// Example: WK_DEFAULT_GCC_OPTIMIZATION_LEVEL.

	GCC_OPTIMIZATION_LEVEL = $(WK_GCC_OPTIMIZATION_LEVEL_SANITIZER_OVERRIDE_$(WK_ANY_SANITIZER_ENABLED));
	WK_GCC_OPTIMIZATION_LEVEL_SANITIZER_OVERRIDE_NO = $(WK_DEFAULT_GCC_OPTIMIZATION_LEVEL);
	WK_GCC_OPTIMIZATION_LEVEL_SANITIZER_OVERRIDE_YES = $(WK_SANITIZER_GCC_OPTIMIZATION_LEVEL);

	WK_OS_UNFAIR_LOCK_INLINE_CFLAGS = $(WK_OS_UNFAIR_LOCK_INLINE_CFLAGS_$(USE_INTERNAL_SDK));
	WK_OS_UNFAIR_LOCK_INLINE_CFLAGS_YES = OS_UNFAIR_LOCK_INLINE=1;

	WK_ENGINEERING_BUILD = $(WK_ENGINEERING_BUILD_$(CONFIGURATION));
	WK_ENGINEERING_BUILD_Debug = 1;
	WK_ENGINEERING_BUILD_Release = 1;
	WK_ENGINEERING_BUILD_Production = 0;

	WK_GCC_PREPROCESSOR_DEFINITIONS = $(WK_GCC_PREPROCESSOR_DEFINITIONS_$(USE_INTERNAL_SDK)) ENGINEERING_BUILD=$(WK_ENGINEERING_BUILD) $(WK_PRESERVE_MOST_DEFINES);
	WK_GCC_PREPROCESSOR_DEFINITIONS_YES = $(WK_OS_UNFAIR_LOCK_INLINE_CFLAGS) __ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0;
	GCC_PREPROCESSOR_DEFINITIONS = $(inherited) $(WK_GCC_PREPROCESSOR_DEFINITIONS);

	// PRESERVE_MOST is only profitable under LTO: without it, hot/cold splitting gives the extracted
	// cold region the default calling convention, so the preserve_most parent saves X9-X15 on its hot
	// path. See rdar://183555125.
	WK_PRESERVE_MOST_DEFINES = $(WK_PRESERVE_MOST_DEFINES_$(LLVM_LTO));
	WK_PRESERVE_MOST_DEFINES_YES = HAVE_PRESERVE_MOST=1;
	WK_PRESERVE_MOST_DEFINES_YES_THIN = HAVE_PRESERVE_MOST=1;

	WK_COMMON_OTHER_CFLAGS = $(WK_AVAILABILITY_OVERLAY_FLAGS) $(WK_SANITIZER_OTHER_CFLAGS) $(WK_COMMON_OTHER_CFLAGS_PGO_$(WK_OR_$(WK_ENABLE_PGO_USE)_$(ENABLE_LLVM_PROFILE_GENERATION)));
	// Work around rdar://141760829 until the fix is available on all clang-1700
	// based toolchains.
	// Fix from rdar://178983382 to avoid symbol module prefix differences causing performance loss.
	WK_COMMON_OTHER_CFLAGS_PGO_YES = -mllvm -system-headers-coverage -mllvm -static-func-full-module-prefix=false;

	OTHER_CFLAGS = $(inherited) $(WK_COMMON_OTHER_CFLAGS);

	WK_COMMON_OTHER_CPLUSPLUSFLAGS = $(WK_AVAILABILITY_OVERLAY_FLAGS) $(WK_LIBCPP_ASSERTIONS_CFLAGS);
	OTHER_CPLUSPLUSFLAGS = $(inherited) $(WK_COMMON_OTHER_CPLUSPLUSFLAGS);

	_EXPERIMENTAL_SWIFT_EXPLICIT_MODULES = YES;

	WK_DEFAULT_COMPILATION_CACHE_ENABLE_CACHING = YES;
	COMPILATION_CACHE_ENABLE_CACHING = $(WK_DEFAULT_COMPILATION_CACHE_ENABLE_CACHING);

	FUSE_BUILD_SCRIPT_PHASES = YES;

	WK_COMMON_OTHER_LDFLAGS = $(WK_SANITIZER_OTHER_LDFLAGS) $(WK_COMMON_OTHER_LDFLAGS_INSTRUMENTATION_$(ENABLE_LLVM_PROFILE_GENERATION));
	// Work around rdar://151083138 by moving the section the profiling runtime
	// mmaps to its own segment.
	WK_COMMON_OTHER_LDFLAGS_INSTRUMENTATION_YES = -Wl,-rename_section,__DATA,__llvm_prf_cnts,__MMAP_DATA,__llvm_prf_cnts;
	OTHER_LDFLAGS = $(inherited) $(WK_COMMON_OTHER_LDFLAGS);

	WK_COMMON_OTHER_TAPI_FLAGS = -x objective-c++ -std=c++2b -fno-rtti $(WK_SANITIZER_OTHER_TAPI_FLAGS) $(WK_AVAILABILITY_OVERLAY_FLAGS);
	OTHER_TAPI_FLAGS = $(inherited) $(WK_COMMON_OTHER_TAPI_FLAGS);

	WK_DEFAULT_WK_AUDIT_SPI[sdk=iphoneos*] = $(WK_AND_$(WK_NOT_$(WK_ANY_SANITIZER_ENABLED))_$(SUPPORTS_TEXT_BASED_API));
	// Explicitly disable auditing on other embedded platforms, because some SDKs
	// fall back to reading settings for iOS.
	WK_DEFAULT_WK_AUDIT_SPI[sdk=appletvos*] = ;
	WK_DEFAULT_WK_AUDIT_SPI[sdk=watchos*] = ;
	WK_DEFAULT_WK_AUDIT_SPI[sdk=xros*] = ;

	WK_AUDIT_SPI = $(WK_DEFAULT_WK_AUDIT_SPI);

	WK_OTHER_AUDIT_SPI_FLAGS = $(WK_OTHER_AUDIT_SPI_FLAGS_148943382) $(WK_OTHER_AUDIT_SPI_FLAGS_164901718) $(WK_OTHER_AUDIT_SPI_FLAGS_$(CONFIGURATION));
	WK_OTHER_AUDIT_SPI_FLAGS_Release = -DNDEBUG;
	WK_OTHER_AUDIT_SPI_FLAGS_Production = -DNDEBUG;
	WK_OTHER_AUDIT_SPI_FLAGS_148943382[sdk=iphoneos26.2.internal] = -DSDKDB_HAS_148943382;
	WK_OTHER_AUDIT_SPI_FLAGS_148943382[sdk=iphoneos26.3.internal] = -DSDKDB_HAS_148943382;
	WK_OTHER_AUDIT_SPI_FLAGS_164901718[sdk=iphoneos26.*.internal] = -DSDKDB_HAS_164901718;

	GCC_WARN_NON_VIRTUAL_DESTRUCTOR = YES;
	GCC_THREADSAFE_STATICS = YES;

	WK_COMMON_WARNING_CFLAGS = -Wall -Wc99-designator -Wconditional-uninitialized -Wextra -Wdeprecated-enum-enum-conversion -Wdeprecated-enum-float-conversion -Wenum-float-conversion -Wfinal-dtor-non-final-class -Wformat=2 -Wmisleading-indentation -Wpointer-to-int-cast -Wreorder-init-list -Wundef -Wunused-but-set-variable -Wvla -Werror=unguarded-availability;
	WARNING_CFLAGS = $(inherited) $(WK_COMMON_WARNING_CFLAGS) $(WK_SANITIZER_WARNING_CFLAGS);

	CLANG_CXX_STANDARD_LIBRARY_HARDENING = extensive;

	SWIFT_VERSION = 6.0;

	SWIFT_OPTIMIZATION_LEVEL = -O;
	SWIFT_OPTIMIZATION_LEVEL[config=Debug] = -Onone;

	// Enable strict memory safety in Swift.
	WK_SWIFT_MEMORY_SAFETY_FLAGS = -strict-memory-safety -enable-experimental-feature Lifetimes -enable-experimental-feature LifetimeDependence -enable-experimental-feature ImportNonPublicCxxMembers;

	// Treat memory safety warnings as errors.
	WK_SWIFT_MEMORY_SAFETY_ERROR_FLAGS = -Werror StrictMemorySafety -Werror ForeignReferenceType;
	// rdar://164903024: Work around false positives in some SDK versions.
	WK_SWIFT_MEMORY_SAFETY_ERROR_FLAGS[sdk=26.3] = ;

	// rdar://168992837 requires us to tell swiftc to tell clang how to set version macros
	// when interpreting C++ headers as clang modules, so that we get identical feature
	// enablement to C++ interpretation of those headers (otherwise we get mismatched data members etc.)
	WK_SWIFT_CLANG_DEPLOYMENT_TARGET = $(WK_SWIFT_CLANG_DEPLOYMENT_TARGET_$(WK_PLATFORM_NAME);
	WK_SWIFT_CLANG_DEPLOYMENT_TARGET_macosx = -clang-target $(CURRENT_ARCH)-apple-macos$(MACOSX_DEPLOYMENT_TARGET);

	// rdar://170129992: remove -track-system-dependencies when resolved
	OTHER_SWIFT_FLAGS = $(inherited) $(WK_AVAILABILITY_OVERLAY_SWIFT_FLAGS) -Xcc -fvisibility=hidden -Werror ExistentialAny -Werror NoUseUnstructuredThrowingTask -Werror NoUsage -enable-upcoming-feature ExistentialAny $(WK_SWIFT_MEMORY_SAFETY_FLAGS) $(WK_SWIFT_MEMORY_SAFETY_ERROR_FLAGS) $(WK_SWIFT_CLANG_DEPLOYMENT_TARGET) $(WK_SANITIZER_OTHER_SWIFT_FLAGS) -enable-upcoming-feature InternalImportsByDefault -enable-upcoming-feature MemberImportVisibility -track-system-dependencies -enable-experimental-feature ImportCxxMembersLazily;
	// Work around rdar://157581667 on affected toolchains.
	OTHER_SWIFT_FLAGS[sdk=26.2] = $(inherited) -Xcc -fno-modulemap-allow-subdirectory-search;
	OTHER_SWIFT_FLAGS[sdk=26.3] = $(inherited) -Xcc -fno-modulemap-allow-subdirectory-search;

	OTHER_LIBTOOLFLAGS = -no_warning_for_no_symbols;