init()에서는 flag가 아니라 args에서 읽음

logger/logger.go

@@ -1,7 +1,6 @@
 package logger
 
 import (
-	"flag"
 	"fmt"
 	"io"
 	"log"
@@ -13,7 +12,6 @@ import (
 
 var stdlogger *log.Logger
 var errlogger *log.Logger
-var logfile = flag.Bool("logfile", false, "")
 
 func init() {
 	binpath, _ := os.Executable()
@@ -24,7 +22,16 @@ func init() {
 	outWriter = os.Stdout
 	errWriter = os.Stderr
 
-	if *logfile {
+	args := os.Args
+	useLogFile := false
+	for _, arg := range args {
+		if arg == "-logfile" {
+			useLogFile = true
+			break
+		}
+	}
+
+	if useLogFile {
 		ext := path.Ext(binname)
 		if len(ext) > 0 {
 			binname = binname[:len(binname)-len(ext)]