it takes long time when I use Segger Embedded Studio to build a project

Question

development tool : Segger Embedded Studio 
 SDK:nRF5_SDK_17.0.2_d674dde 
 it always takes long time to build project 
 build log: 
 Building ‘blinky_pca10056’ from solution ‘blinky_pca10056’ in configuration ‘Release’ 1> Output/Release/Obj/blinky_pca10056/thumb_crt0.o does not exist. 2> Output/Release/Obj/blinky_pca10056/nrf_log_frontend.o does not exist. 3> Output/Release/Obj/blinky_pca10056/nrf_log_str_formatter.o does not exist. 4> Output/Release/Obj/blinky_pca10056/boards.o does not exist. 5> Output/Release/Obj/blinky_pca10056/app_error.o does not exist. 6> Output/Release/Obj/blinky_pca10056/app_error_handler_gcc.o does not exist. 1> Assembling ‘thumb_crt0.s’ 2> Compiling ‘nrf_log_frontend.c’ 3> Compiling ‘nrf_log_str_formatter.c’ 4> Compiling ‘boards.c’ 5> Compiling ‘app_error.c’ 6> Compiling ‘app_error_handler_gcc.c’ 1> Output/Release/Obj/blinky_pca10056/app_error_weak.o does not exist. 2> Output/Release/Obj/blinky_pca10056/app_util_platform.o does not exist. 3> Output/Release/Obj/blinky_pca10056/nrf_assert.o does not exist. 1> Compiling ‘app_error_weak.c’ 2> Compiling ‘app_util_platform.c’ 3> Compiling ‘nrf_assert.c’ 4> Output/Release/Obj/blinky_pca10056/nrf_atomic.o does not exist. 5> Output/Release/Obj/blinky_pca10056/nrf_balloc.o does not exist. 6> Output/Release/Obj/blinky_pca10056/nrf_fprintf.o does not exist. 4> Compiling ‘nrf_atomic.c’ 5> Compiling ‘nrf_balloc.c’ 6> Compiling ‘nrf_fprintf.c’ 1> Output/Release/Obj/blinky_pca10056/nrf_fprintf_format.o does not exist. 2> Output/Release/Obj/blinky_pca10056/nrf_memobj.o does not exist. 1> Compiling ‘nrf_fprintf_format.c’ 2> Compiling ‘nrf_memobj.c’ 3> Output/Release/Obj/blinky_pca10056/nrf_ringbuf.o does not exist. 4> Output/Release/Obj/blinky_pca10056/nrf_strerror.o does not exist. 3> Compiling ‘nrf_ringbuf.c’ 4> Compiling ‘nrf_strerror.c’ 6> Output/Release/Obj/blinky_pca10056/nrfx_atomic.o does not exist. 6> Compiling ‘nrfx_atomic.c’ 1> Output/Release/Obj/blinky_pca10056/main.o does not exist. 1> Compiling ‘main.c’ 2> Output/Release/Obj/blinky_pca10056/ses_startup_nrf52840.o does not exist. 3> Output/Release/Obj/blinky_pca10056/ses_startup_nrf_common.o does not exist. 2> Assembling ‘ses_startup_nrf52840.s’ 3> Assembling ‘ses_startup_nrf_common.s’ 4> Output/Release/Obj/blinky_pca10056/system_nrf52840.o does not exist. 4> Compiling ‘system_nrf52840.c’