CC user/at_baseCmd.c
In file included from /usr/include/string.h:25:0,
from /opt/Espressif/ESP8266_SDK/include/osapi.h:8,
from user/at_baseCmd.c:1:
/usr/include/features.h:374:25: fatal error: sys/cdefs.h: No such file or directory
# include <sys/cdefs.h>
^
compilation terminated.
====================
but yesterday using a old Ubuntukylin14.04,just OK.
who can help me? thanks advance.