Nuttx was found to be a strange error compiling on Macos

[Nii Jyeni]

OS:MacOS
Nuttx:nightly
Arm-none-eabi-gcc:7.3.1

…
arning: /Library/Developer/CommandLineTools/usr/bin/ranlib: warning for 
library: libbinfmt.a the table of contents is empty (no object file members in 
the library define global symbols)
IN: binfmt/libbinfmt.a -> staging/libbinfmt.a
CC:  board/stm32_boot.c
CC:  board/stm32_bringup.c
CC:  board/stm32_spi.c
CC:  board/stm32_userleds.c
CC:  board/stm32_appinit.c
CC:  board/stm32_extmem.c
CC:  board/stm32_lcd.c
CC:  board/stm32_adc.c
ar rcs  libboard.a   stm32_boot.o stm32_bringup.o stm32_spi.o stm32_userleds.o 
stm32_appinit.o stm32_extmem.o stm32_lcd.o stm32_adc.o
warning: /Library/Developer/CommandLineTools/usr/bin/ranlib: warning for 
library: libboard.a the table of contents is empty (no object file members in 
the library define global symbols)
LD: nuttx
arm-none-eabi-ld: warning: cannot find entry symbol __start; defaulting to 
0000000008000000

Does anybody know what's going on?