Make output

rm -rf _build
echo  Makefile
Makefile
mkdir _build
Compiling file: app_error.c
Compiling file: app_error_weak.c
Compiling file: app_fifo.c
Compiling file: app_timer.c
Compiling file: app_trace.c
Compiling file: app_util_platform.c
Compiling file: fstorage.c
Compiling file: nrf_assert.c
Compiling file: nrf_log.c
Compiling file: retarget.c
Compiling file: sensorsim.c
Compiling file: app_uart_fifo.c
Compiling file: nrf_delay.c
Compiling file: nrf_drv_common.c
Compiling file: nrf_drv_gpiote.c
Compiling file: nrf_drv_uart.c
Compiling file: pstorage.c
Compiling file: bsp.c
Compiling file: bsp_btn_ble.c
Compiling file: RTT_Syscalls_GCC.c
Compiling file: SEGGER_RTT.c
Compiling file: SEGGER_RTT_printf.c
Compiling file: ble_advdata.c
Compiling file: ble_advertising.c
Compiling file: ble_bas.c
Compiling file: ble_conn_params.c
Compiling file: ble_dis.c
Compiling file: ble_hrs.c
Compiling file: ble_srv_common.c
Compiling file: device_manager_peripheral.c
Compiling file: system_nrf51.c
Compiling file: softdevice_handler.c
Compiling file: nrf_soc.c
Compiling file: gcc_startup_nrf51.s
Compiling file: i2c.cpp
In file included from /home/dingari/dev/arm/genki_ble_test/lib/i2c/i2c.cpp:36:0:
/home/dingari/nRF5_SDK/components/drivers_nrf/twi_master/nrf_drv_twi.h:91:1: warning: invalid conversion from 'void*' to 'NRF_TWI_Type*' [-fpermissive]
 }
 ^
/home/dingari/dev/arm/genki_ble_test/lib/i2c/i2c.cpp:40:30: note: in expansion of macro 'NRF_DRV_TWI_INSTANCE'
 static nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(0);
                              ^
Compiling file: main.cpp
In file included from /home/dingari/dev/arm/genki_ble_test/main.cpp:54:0:
/home/dingari/dev/arm/genki_ble_test/main.cpp: In function 'void gpio_config()':
/home/dingari/nRF5_SDK/components/drivers_nrf/gpiote/nrf_drv_gpiote.h:85:5: sorry, unimplemented: non-trivial designated initializers not supported
     }
     ^
/home/dingari/dev/arm/genki_ble_test/main.cpp:139:46: note: in expansion of macro 'GPIOTE_CONFIG_OUT_SIMPLE'
     nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);
                                              ^
/home/dingari/nRF5_SDK/components/drivers_nrf/gpiote/nrf_drv_gpiote.h:85:5: sorry, unimplemented: non-trivial designated initializers not supported
     }
     ^
/home/dingari/dev/arm/genki_ble_test/main.cpp:139:46: note: in expansion of macro 'GPIOTE_CONFIG_OUT_SIMPLE'
     nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);
                                              ^
In file included from /home/dingari/dev/arm/genki_ble_test/main.cpp:43:0:
/home/dingari/dev/arm/genki_ble_test/main.cpp: In function 'void timers_init()':
/home/dingari/nRF5_SDK/components/libraries/timer/app_timer.h:156:58: warning: converting 'false' to pointer type for argument 4 of 'uint32_t app_timer_init(uint32_t, uint8_t, void*, app_timer_evt_schedule_func_t)' [-Wconversion-null]
                                            SCHEDULER_FUNC);                                        \
                                                          ^
/home/dingari/dev/arm/genki_ble_test/main.cpp:193:5: note: in expansion of macro 'APP_TIMER_INIT'
     APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false);
     ^
Makefile:216: recipe for target '_build/main.o' failed
make: *** [_build/main.o] Error 1