DA14531 Codeless构建问题

我使用的是keil5.24,ARM Complier6.7,构建程序报错,是什么原因

*** Using Compiler 'V6.7', folder: 'E:\WorkingSoftware\Keil\ARM\ARMCLANG\Bin'
Build target 'codeless_531_datapump'
compiling hardfault_handler.c...
compiling hash.c...
compiling arch_sleep.c...
compiling system_DA14531.c...
../../../../../sdk6/sdk/platform/system_library/src/DA14531/system_library_531.c(257): warning: unknown warning group '-Wstringop-overflow', ignored [-Wunknown-pragmas]
#pragma GCC diagnostic ignored "-Wstringop-overflow"
^
../../../../../sdk6/sdk/platform/system_library/src/DA14531/system_library_531.c(263): warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
#pragma GCC diagnostic pop
^
2 warnings generated.
compiling system_library_531.c...
compiling system_library_585_586.c...
compiling chacha20.c...
compiling arch_console.c...
compiling nmi_handler.c...
compiling otp_cs.c...
compiling nvds.c...
compiling arch_rom.c...
compiling jump_table.c...
compiling arch_main.c...
compiling arch_system.c...
compiling system_library_531_01.c...
compiling system_library_535.c...
compiling syscntl.c...
compiling gpio.c...
compiling wkupct_quadec.c...
compiling battery.c...
compiling trng.c...
compiling spi_flash.c...
compiling uart.c...
compiling systick.c...
compiling uart_utils.c...
compiling i2c.c...
compiling i2c_eeprom.c...
compiling spi_531.c...
compiling adc_531.c...
compiling hw_otpc_531.c...
compiling timer2.c...
compiling rf_585.c...
compiling rf_531.c...
compiling attm_db_128.c...
compiling custs2_task.c...
compiling custom_common.c...
compiling custs2.c...
compiling custs1.c...
compiling prf.c...
compiling rwip.c...
compiling rwble.c...
compiling custs1_task.c...
../../../../../sdk6/sdk/platform/core_modules/rf/src/ble_arp.c(915): warning: unknown warning group '-Wstringop-overflow', ignored [-Wunknown-pragmas]
#pragma GCC diagnostic ignored "-Wstringop-overflow"
^
../../../../../sdk6/sdk/platform/core_modules/rf/src/ble_arp.c(935): warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
#pragma GCC diagnostic pop
^
2 warnings generated.
compiling ble_arp.c...
compiling prf_utils.c...
compiling diss.c...
compiling suotar.c...
compiling diss_task.c...
compiling suotar_task.c...
compiling app_security.c...
compiling app_default_handlers.c...
compiling app_bass.c...
compiling app_findme_task.c...
compiling app_task.c...
compiling app_findme.c...
compiling app_bass_task.c...
compiling app.c...
compiling app_security_task.c...
compiling app_proxr.c...
compiling app_proxr_task.c...
compiling app_diss.c...
compiling app_diss_task.c...
compiling app_suotar.c...
compiling app_suotar_task.c...
compiling app_msg_utils.c...
compiling app_easy_msg_utils.c...
compiling app_entry_point.c...
compiling app_customs_common.c...
compiling app_easy_timer.c...
compiling app_customs_task.c...
compiling app_customs.c...
compiling app_utils.c...
compiling app_easy_security.c...
compiling app_bond_db.c...
compiling app_handlers_db.c...
compiling app_non_volatile_storage.c...
compiling app_events_db.c...
compiling user_custs_config_585.c...
compiling app_conpar_db.c...
compiling user_custs1_def_585.c...
compiling user_periph_setup.c...
compiling user_cmd_interpreter.c...
compiling user_cmd_parser.c...
compiling user_codeless.c...
compiling user_gap.c...
compiling user_codeless_env.c...
compiling user_gatt.c...
compiling user_i2c.c...
compiling user_at_console.c...
compiling user_bonding_database.c...
compiling user_at_commands.c...
compiling user_utility_functions.c...
compiling user_handlers.c...
compiling user_pwm.c...
compiling user_custs_sps.c...
compiling user_spi.c...
compiling user_security.c...
compiling user_heartbeat.c...
compiling user_spi_command_interface.c...
compiling user_baud.c...
linking...
.\out_531\codeless_531_datapump.axf: Warning: L6124W: Linker asked to preserve internal global: 'custs1_value_req_rsp_handler'
.\out_531\codeless_531_datapump.axf: Error: L6137E: Symbol custs1_value_req_rsp_handler was not preserved by the LTO codegen but is needed by the image.
Not enough information to produce a SYMDEFs file.
Not enough information to list image symbols.
Not enough information to list load addresses in the image map.
Finished: 3 information, 1 warning and 1 error messages.
".\out_531\codeless_531_datapump.axf" - 1 Error(s), 5 Warning(s).
Target not created.
Build Time Elapsed: 00:00:23

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