1 files changed, 6 insertions, 0 deletions
diff --git a/Source/cmVariableRequiresCommand.h b/Source/cmVariableRequiresCommand.h
index becd108c5c..28ef7bd936 100644
--- a/Source/cmVariableRequiresCommand.h
+++ b/Source/cmVariableRequiresCommand.h
@@ -72,6 +72,12 @@ public:
       "is reported.";
     }
   
+  /** This command is kept for compatibility with older CMake versions. */
+  virtual bool IsDiscouraged()
+    {
+    return true;
+    }
+
   cmTypeMacro(cmVariableRequiresCommand, cmCommand);
 };