--- old/modules/jdk.packager/src/main/native/library/common/Package.h	2017-07-05 12:50:51.000000000 -0700
+++ new/modules/jdk.packager/src/main/native/library/common/Package.h	2017-07-05 12:50:51.000000000 -0700
@@ -110,6 +110,7 @@
     void Initialize();
     void Clear();
     void FreeBootFields();
+    bool CheckForSingleInstance();
 
     void SetCommandLineArguments(int argc, TCHAR* argv[]);