split the file for logs

@@ -155,7 +155,7 @@ func (bl *BeeLogger) writerMsg(loglevel int, msg string) error {
 	lm.level = loglevel
 	lm.level = loglevel
 	if bl.enableFuncCallDepth {
 	if bl.enableFuncCallDepth {
 		_, file, line, ok := runtime.Caller(bl.loggerFuncCallDepth)
 		_, file, line, ok := runtime.Caller(bl.loggerFuncCallDepth)
-		if file == "log.go" && line == 97 {
+		if _, filename := path.Split(file); filename == "log.go" && line == 97 {
 			_, file, line, ok = runtime.Caller(bl.loggerFuncCallDepth + 1)
 			_, file, line, ok = runtime.Caller(bl.loggerFuncCallDepth + 1)
 		}
 		}
 		if ok {
 		if ok {