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macro(qt_find_apple_system_frameworks)
    if(APPLE)
        qt_internal_find_apple_system_framework(FWAppKit AppKit)
        qt_internal_find_apple_system_framework(FWAssetsLibrary AssetsLibrary)
        qt_internal_find_apple_system_framework(FWAudioToolbox AudioToolbox)
        qt_internal_find_apple_system_framework(FWApplicationServices ApplicationServices)
        qt_internal_find_apple_system_framework(FWCarbon Carbon)
        qt_internal_find_apple_system_framework(FWCoreFoundation CoreFoundation)
        qt_internal_find_apple_system_framework(FWCoreServices CoreServices)
        qt_internal_find_apple_system_framework(FWCoreGraphics CoreGraphics)
        qt_internal_find_apple_system_framework(FWCoreText CoreText)
        qt_internal_find_apple_system_framework(FWCoreVideo CoreVideo)
        qt_internal_find_apple_system_framework(FWDiskArbitration DiskArbitration)
        qt_internal_find_apple_system_framework(FWFoundation Foundation)
        qt_internal_find_apple_system_framework(FWIOBluetooth IOBluetooth)
        qt_internal_find_apple_system_framework(FWIOKit IOKit)
        qt_internal_find_apple_system_framework(FWIOSurface IOSurface)
        qt_internal_find_apple_system_framework(FWImageIO ImageIO)
        qt_internal_find_apple_system_framework(FWMetal Metal)
        qt_internal_find_apple_system_framework(FWMobileCoreServices MobileCoreServices)
        qt_internal_find_apple_system_framework(FWQuartzCore QuartzCore)
        qt_internal_find_apple_system_framework(FWSecurity Security)
        qt_internal_find_apple_system_framework(FWSystemConfiguration SystemConfiguration)
        qt_internal_find_apple_system_framework(FWUIKit UIKit)

        qt_internal_find_apple_system_framework(FWWatchKit WatchKit)
        qt_internal_find_apple_system_framework(FWGameController GameController)
    endif()
endmacro()

# Given framework_name == 'IOKit', sets non-cache variable 'FWIOKit' to '-framework IOKit' in
# the calling directory scope if the framework is found, or 'IOKit-NOTFOUND'.
function(qt_internal_find_apple_system_framework out_var framework_name)
    # To avoid creating many FindFoo.cmake files for each apple system framework, populate each
    # FWFoo variable with '-framework Foo' instead of an absolute path to the framework. This makes
    # the generated CMake target files relocatable, so that Xcode SDK absolute paths are not
    # hardcoded, like with Xcode11.app on the CI.
    # We might revisit this later.
    set(cache_var_name "${out_var}Internal")

    find_library(${cache_var_name} "${framework_name}")

    if(${cache_var_name} AND ${cache_var_name} MATCHES ".framework$")
        set(${out_var} "-framework ${framework_name}" PARENT_SCOPE)
    else()
        set(${out_var} "${out_var}-NOTFOUND" PARENT_SCOPE)
    endif()
endfunction()

# Copy header files to QtXYZ.framework/Versions/6/Headers/
# Use this function for header files that
#   - are not added as source files to the target
#   - are not marked as PUBLIC_HEADER
#   - or are private and supposed to end up in the 6.7.8/QtXYZ/private subdir.
function(qt_copy_framework_headers target)
    get_target_property(is_fw ${target} FRAMEWORK)
    if(NOT "${is_fw}")
        return()
    endif()

    set(options PUBLIC PRIVATE QPA)
    set(oneValueArgs)
    set(multiValueArgs)
    cmake_parse_arguments(ARG "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})

    get_target_property(fw_version ${target} FRAMEWORK_VERSION)
    get_target_property(fw_bundle_version ${target} MACOSX_FRAMEWORK_BUNDLE_VERSION)
    get_target_property(fw_dir ${target} LIBRARY_OUTPUT_DIRECTORY)
    get_target_property(fw_name ${target} OUTPUT_NAME)
    set(fw_headers_dir ${fw_dir}/${fw_name}.framework/Versions/${fw_version}/Headers/)
    if(ARG_PRIVATE)
        string(APPEND fw_headers_dir "${fw_bundle_version}/Qt${target}/private/")
    elseif(ARG_QPA)
        string(APPEND fw_headers_dir "${fw_bundle_version}/Qt${target}/qpa/")
    endif()

    set(out_files)
    foreach(hdr IN LISTS ARG_UNPARSED_ARGUMENTS)
        get_filename_component(in_file_path ${hdr} ABSOLUTE)
        get_filename_component(in_file_name ${hdr} NAME)
        set(out_file_path ${fw_headers_dir}${in_file_name})
        add_custom_command(
            OUTPUT ${out_file_path}
            DEPENDS ${in_file_path}
            COMMAND ${CMAKE_COMMAND} -E make_directory "${fw_headers_dir}"
            COMMAND ${CMAKE_COMMAND} -E copy "${in_file_path}" "${fw_headers_dir}")
        list(APPEND out_files ${out_file_path})
    endforeach()

    get_target_property(fw_copied_headers ${target} QT_COPIED_FRAMEWORK_HEADERS)
    if(NOT fw_copied_headers)
        set(fw_copied_headers "")
    endif()
    list(APPEND fw_copied_headers ${out_files})
    set_target_properties(${target} PROPERTIES QT_COPIED_FRAMEWORK_HEADERS "${fw_copied_headers}")
endfunction()

function(qt_finalize_framework_headers_copy target)
    get_target_property(target_type ${target} TYPE)
    if(${target_type} STREQUAL "INTERFACE_LIBRARY")
        return()
    endif()
    get_target_property(is_fw ${target} FRAMEWORK)
    if(NOT "${is_fw}")
        return()
    endif()
    get_target_property(headers ${target} QT_COPIED_FRAMEWORK_HEADERS)
    if(headers)
        # Hack to create the "Headers" symlink in the framework:
        # Create a fake header file and copy it into the framework by marking it as PUBLIC_HEADER.
        # CMake now takes care of creating the symlink.
        set(fake_header ${target}_fake_header.h)
        qt_get_main_cmake_configuration(main_config)
        file(GENERATE OUTPUT ${fake_header} CONTENT "// ignore this file\n"
             CONDITION "$<CONFIG:${main_config}>")
        string(PREPEND fake_header "${CMAKE_CURRENT_BINARY_DIR}/")
        target_sources(${target} PRIVATE ${fake_header})
        set_source_files_properties(${fake_header} PROPERTIES GENERATED ON)
        set_property(TARGET ${target} APPEND PROPERTY PUBLIC_HEADER ${fake_header})

        # Add a target, e.g. Core_framework_headers, that triggers the header copy.
        add_custom_target(${target}_framework_headers DEPENDS ${headers})
        add_dependencies(${target} ${target}_framework_headers)
    endif()
endfunction()