add #include <sys/time.h>

原因 tm = gmtime_r(&now, &tm_tmp);报错

Author: Dahua1992

components/utilities/ulog/syslog/syslog.c

@@ -25,7 +25,7 @@
  */
 
 #ifdef ULOG_USING_SYSLOG
-
+#include <sys/time.h>
 #ifndef ULOG_SYSLOG_IDENT_MAX_LEN
 #define ULOG_SYSLOG_IDENT_MAX_LEN      ULOG_FILTER_TAG_MAX_LEN
 #endif