menu "Menu for CHIPA"
    visible if IDF_TARGET_CHIPA

    config EXT_CONFIG1_FOR_CHIPA_MENU
        bool "Config for chip A"
        depends on IDF_TARGET_CHIPA

    config EXT_CONFIG2_FOR_CHIPA_MENU
        bool "Config for chip A (depend on the visibility of the menu)"

endmenu

config EXT_CONFIG3_FOR_CHIPA
    bool "Config for chip A"
    depends on IDF_TARGET_CHIPA

config EXT_CONFIG4
    bool "Config for every chip (note that the config is defined at multiple places)"
    depends on IDF_TARGET_CHIPA