Fix build.sh

Change-Id: Iee1b81dc8f1cf4b2108638870204c1f772e8d047
diff --git a/build.sh b/build.sh
index f06ac34..be9f10a 100755
--- a/build.sh
+++ b/build.sh
@@ -35,7 +35,7 @@
 
 function file_copy()
 {
-	ROOTFS_DIR=$ROOT_DIR/../asr_code/target/linux/mmp/base-files
+	ROOTFS_DIR=$ROOT_DIR/../asr_code/mbtk
 
 	if [ -d $ROOTFS_DIR ];then
 		echo "Copy MBTK out files..."
@@ -59,17 +59,21 @@
 
 function main()
 {
-	if [ ! -d out/bin ];then
-		mkdir -p out/bin
+	if [ -d out/bin -a -d out/lib ];then
+		file_copy
+	else
+		if [ ! -d out/bin ];then
+			mkdir -p out/bin
+		fi
+		
+		if [ ! -d out/lib ];then
+			mkdir -p out/lib
+		fi
+
+		build
+
+		file_copy
 	fi
-
-	if [ ! -d out/lib ];then
-		mkdir -p out/lib
-	fi
-
-	build
-
-	file_copy
 }
 
 main
\ No newline at end of file