if(NOT APPLE)

    configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"

                   "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"

                    IMMEDIATE @ONLY)

    add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")

endif()

if(APPLE AND NOT SKIPBUNDLE)

    find_package(Qt5 REQUIRED QUIET COMPONENTS Core Widgets Gui Network)

    find_package(SDL2 REQUIRED CONFIG)

    find_package(SDL2_image 2 REQUIRED)

    find_package(SDL2_net 2 REQUIRED)

    find_package(SDL2_ttf 2 REQUIRED)

    find_package(SDL2_mixer 2 REQUIRED)

    find_package(OggVorbis REQUIRED)

    find_package(PNG REQUIRED)

    if(NOT NOAUTOUPDATE)

        find_package(Sparkle) #needed for SPARKLE_FOUND variable

        #needed because the 'if' clause in the script prints silly policy warnings

        if(SPARKLE_FOUND)

            set(SPARKLE_FOUND 1)

        else()

            set(SPARKLE_FOUND 0)

        endif()

    endif()

    #remove the ";-framework Cocoa" from the SDL2_LIBRARIES variable

    string(REGEX REPLACE "(.*);-.*" "\\1" sdl_library_only "${SDL2_LIBRARIES}")

    #remove the "libSDLmain.a" from the SDL2_LIBRARIES variable

    string(REGEX REPLACE ".*;(.*)" "\\1" sdl_library_only "${sdl_library_only}")

    #get the neme of the library (harmelss if it is static)

    string(REGEX REPLACE ".*/(.*)$" "\\1" PNG_LIBNAME "${PNG_LIBRARY}")

    string(REGEX REPLACE ".*/(.*)$" "\\1" ZLIB_LIBNAME "${ZLIB_LIBRARY}")

    set(frameworks_dir ${CMAKE_INSTALL_PREFIX}/${target_library_install_dir})

    if(${BUILD_ENGINE_LIBRARY})

        set(engine_full_path "${frameworks_dir}/${CMAKE_SHARED_LIBRARY_PREFIX}hwengine${CMAKE_SHARED_LIBRARY_SUFFIX}")

    else()

        set(engine_full_path "${CMAKE_INSTALL_PREFIX}/hwengine${CMAKE_EXECUTABLE_SUFFIX}")

    endif()

    #create the .app bundle using BundleUtilities instead of old macdeployqt

    set(APP_DIR "Hedgewars.app")

    set(APP_BASE_DIR "${CMAKE_INSTALL_PREFIX}/../")  # should be, Hedgewars.app/Contents/MacOS/../

    # macro to install qt5 plugins 

    # modified from https://github.com/Kitware/CMake/blob/master/Source/QtDialog/CMakeLists.txt

    macro(install_qt5_plugin _qt_plugin_name _qt_plugins_var)

      get_target_property(_qt_plugin_path "${_qt_plugin_name}" LOCATION)

      if(EXISTS "${_qt_plugin_path}")

        get_filename_component(_qt_plugin_file "${_qt_plugin_path}" NAME)

        get_filename_component(_qt_plugin_type "${_qt_plugin_path}" PATH)

        get_filename_component(_qt_plugin_type "${_qt_plugin_type}" NAME)

        set(_qt_plugin_dir "PlugIns")

        set(_qt_plugin_dest "${_qt_plugin_dir}/${_qt_plugin_type}")

        install(FILES "${_qt_plugin_path}"

          DESTINATION "../${_qt_plugin_dest}" # relative to install dir

          ${COMPONENT})

        list(APPEND ${_qt_plugins_var}

          "\${CMAKE_BINARY_DIR}/${APP_BASE_DIR}/${_qt_plugin_dest}/${_qt_plugin_file}")

      else()

        message(FATAL_ERROR "QT plugin ${_qt_plugin_name} not found")

      endif()

    endmacro()

    # install cocoa plugin and build list to send to fixup_bundle

    install_qt5_plugin("Qt5::QCocoaIntegrationPlugin" QT_PLUGINS)

    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"

        "[Paths]\nPlugins = ${_qt_plugin_dir}\n")

    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"

        DESTINATION "../Resources"  # relative to install dir

        ${COMPONENT})

    # Build up search directories for fixup_bundle

    set(DIRS "")

    # Add QT bin and lib paths

    if(CMAKE_PREFIX_PATH)

        foreach(dir ${CMAKE_PREFIX_PATH})

            list(APPEND DIRS "${dir}/bin" "${dir}/lib")

        endforeach()

    endif()

    # Add other lib folder from around the system

    list(APPEND DIRS 

        ~/Library/Frameworks

        /Library/Frameworks

        /usr/local/lib

        /opt/local/lib

    )

    # operate on the Hedgewars.app

    set(APPS ${CMAKE_BINARY_DIR}/${APP_DIR})

    # debugging

    message(STATUS "APPS: ${APPS}")

    message(STATUS "QT_PLUGINS: ${QT_PLUGINS}")

    message(STATUS "DIRS: ${DIRS}")

    # properly fixup the .app to include all dependencies    

    install(CODE "include(BundleUtilities)

        fixup_bundle(\"${APPS}\" \"${QT_PLUGINS}\" \"${DIRS}\")")

    #create the .dmg for deployment

    #first make sure .app exists, then remove any old .dmg with same name, finally run the script

    add_custom_target(dmg COMMAND make install

                          COMMAND rm -f ${CMAKE_BINARY_DIR}/Hedgewars-${HEDGEWARS_VERSION}.dmg

                          COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/create-dmg.sh

                                  --volname "Hedgewars ${HEDGEWARS_VERSION}"

                                # --volicon icon.icns

                                  --window-size 600 470

                                  --icon-size 96

                                  --icon "Hedgewars" 190 190

                                  --app-drop-link 410 190

                                  --background "${CMAKE_CURRENT_SOURCE_DIR}/../misc/dmgBackground.png"

                                  ${CMAKE_BINARY_DIR}/Hedgewars-${HEDGEWARS_VERSION}.dmg

                                  ${CMAKE_BINARY_DIR}/${APP_DIR}

                          WORKING_DIRECTORY ${CMAKE_BINARY_DIR})

endif()