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\badcode
cmake_minimum_required(VERSION 3.16...3.22)
project(MyThings)

find_package(Qt6 REQUIRED COMPONENTS Core)
qt_standard_project_setup()

qt_add_executable(MyApp main.cpp)

set_target_properties(MyApp PROPERTIES
    WIN32_EXECUTABLE TRUE
    MACOSX_BUNDLE TRUE
)

# App bundles on macOS have an .app suffix
if(APPLE)
    set(executable_path "$<TARGET_FILE_NAME:MyApp>.app")
else()
    set(executable_path "\${QT_DEPLOY_BIN_DIR}/$<TARGET_FILE_NAME:MyApp>")
endif()

# Helper app, not necessarily built as part of this project.
qt_add_executable(HelperApp helper.cpp)
set(helper_app_path "\${QT_DEPLOY_BIN_DIR}/$<TARGET_FILE_NAME:HelperApp>")

# Generate a deployment script to be executed at install time
qt_generate_deploy_script(
    TARGET MyApp
    FILENAME_VARIABLE deploy_script
    CONTENT "
qt_deploy_runtime_dependencies(
    EXECUTABLE \"${executable_path}\"
    ADDITIONAL_EXECUTABLES \"${helper_app_path}\"
    GENERATE_QT_CONF
    VERBOSE
)")

# Omitting RUNTIME DESTINATION will install a non-bundle target to CMAKE_INSTALL_BINDIR,
# which coincides with the default value of QT_DEPLOY_BIN_DIR used above, './bin'.
# Installing macOS bundles always requires an explicit BUNDLE DESTINATION option.
install(TARGETS MyApp HelperApp    # Install to CMAKE_INSTALL_PREFIX/bin/MyApp.exe
                                   #                           and ./binHelperApp.exe
        BUNDLE  DESTINATION .      # Install to CMAKE_INSTALL_PREFIX/MyApp.app/Contents/MacOS/MyApp
)
install(SCRIPT ${deploy_script})    # Add its runtime dependencies
\endcode