diff --git a/Source/cmSubDirectory.h b/Source/cmSubDirectory.h
new file mode 100644
index 000000000..aeccea4a3
--- /dev/null
+++ b/Source/cmSubDirectory.h
@@ -0,0 +1,38 @@
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef cmSubDirectory_h
+#define cmSubDirectory_h
+
+#include "cmStandardIncludes.h"
+
+/** \class cmSubDirectory
+ * \brief A class to encapsulate a custom command
+ *
+ * cmSubDirectory encapsulates the properties of a custom command
+ */
+class cmSubDirectory
+{
+public:
+  cmSubDirectory() { IncludeTopLevel = true; PreOrder = false; }
+  
+  std::string SourcePath;
+  std::string BinaryPath;
+  bool IncludeTopLevel;
+  bool PreOrder;
+};
+
+#endif