fix build error.

armink · armink · commit 4399aed64192 · 2021-12-03T13:34:03.000+08:00
diff --git a/components/utilities/ulog/ulog.c b/components/utilities/ulog/ulog.c
@@ -244,7 +244,6 @@ static char *get_log_buf(void)
     }
 }
 
-extern struct tm* localtime_r(const time_t* t, struct tm* r);
 RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *tag, rt_bool_t newline,
         const char *format, va_list args)
 {
@@ -275,6 +274,7 @@ RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *ta
     /* add time info */
     {
 #ifdef ULOG_TIME_USING_TIMESTAMP
+        extern struct tm* localtime_r(const time_t* t, struct tm* r);
         static struct timeval now;
         static struct tm *tm, tm_tmp;
         static rt_bool_t check_usec_support = RT_FALSE, usec_is_support = RT_FALSE;

Original file line number	Diff line number	Diff line change
`@@ -244,7 +244,6 @@ static char *get_log_buf(void)`
`244`	`244`	`}`
`245`	`245`	`}`
`246`	`246`
`247`		`-extern struct tm* localtime_r(const time_t* t, struct tm* r);`
`248`	`247`	`RT_WEAK rt_size_t ulog_formater(char log_buf, rt_uint32_t level, const char tag, rt_bool_t newline,`
`249`	`248`	`const char *format, va_list args)`
`250`	`249`	`{`
`@@ -275,6 +274,7 @@ RT_WEAK rt_size_t ulog_formater(char log_buf, rt_uint32_t level, const char ta`
`275`	`274`	`/* add time info */`
`276`	`275`	`{`
`277`	`276`	`#ifdef ULOG_TIME_USING_TIMESTAMP`
	`277`	`+ extern struct tm* localtime_r(const time_t* t, struct tm* r);`
`278`	`278`	`static struct timeval now;`
`279`	`279`	`static struct tm *tm, tm_tmp;`
`280`	`280`	`static rt_bool_t check_usec_support = RT_FALSE, usec_is_support = RT_FALSE;`