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diff --git a/Source/cmPathLabel.h b/Source/cmPathLabel.h
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+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmPathLabel_h
+#define cmPathLabel_h
+
+#include "cmStandardIncludes.h"
+
+/** \class cmPathLabel
+ * \brief Helper class for text based labels
+ *
+ * cmPathLabel is extended in different classes to act as an inheritable
+ * enum.  Comparisons are done on a precomputed Jenkins hash of the string
+ * label for indexing and searchig.
+ */
+class cmPathLabel
+{
+public:
+  cmPathLabel(const std::string& label);
+
+  // The comparison operators are only for quick sorting and searching and
+  // in no way imply any lexicographical order of the label
+  bool operator < (const cmPathLabel& l) const;
+  bool operator == (const cmPathLabel& l) const;
+
+  const std::string& GetLabel() const { return this->Label; }
+  const unsigned int& GetHash() const { return this->Hash; }
+
+protected:
+  cmPathLabel();
+
+  std::string Label;
+  unsigned int Hash;
+};
+
+#endif