diff --git a/include/llvm/PassSupport.h b/include/llvm/PassSupport.h
index e7bb0418254..270b9f6108a 100644
--- a/include/llvm/PassSupport.h
+++ b/include/llvm/PassSupport.h
@@ -337,4 +337,14 @@ struct PassRegistrationListener {
   virtual void passEnumerate(const PassInfo *P) {}
 };
 
+
+//===---------------------------------------------------------------------------
+// IncludeFile class - This class is used as a hack to make sure that the
+// implementation of a header file is included into a tool that uses the header.
+// This is solely to overcome problems linking .a files and not getting the
+// implementation of passes we need.
+//
+struct IncludeFile {
+  IncludeFile(void *);
+};
 #endif