diff -r 5f63af8f9d7f -r 31e07291ae29 src/hotspot/share/runtime/handshake.hpp
--- a/src/hotspot/share/runtime/handshake.hpp	Mon Apr 23 09:01:03 2018 -0700
+++ b/src/hotspot/share/runtime/handshake.hpp	Mon Apr 23 10:59:39 2018 -0500
@@ -26,6 +26,7 @@
 #define SHARE_VM_RUNTIME_HANDSHAKE_HPP
 
 #include "memory/allocation.hpp"
+#include "runtime/flags/flagSetting.hpp"
 #include "runtime/semaphore.hpp"
 
 class ThreadClosure;