1add_subdirectory_ifdef(CONFIG_SOC_FAMILY_SILABS_S0 gecko) 2add_subdirectory_ifdef(CONFIG_SOC_FAMILY_SILABS_S1 gecko) 3add_subdirectory_ifdef(CONFIG_SOC_FAMILY_SILABS_S2 simplicity_sdk) 4add_subdirectory_ifdef(CONFIG_HAS_SILABS_SI32 si32) 5