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diff --git a/Source/cmFileTimeComparison.h b/Source/cmFileTimeComparison.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 cmFileTimeComparison_h
+#define cmFileTimeComparison_h
+
+#include "cmStandardIncludes.h"
+
+class cmFileTimeComparisonInternal;
+
+/** \class cmFileTimeComparison
+ * \brief Helper class for performing globbing searches.
+ *
+ * Finds all files that match a given globbing expression.
+ */
+class cmFileTimeComparison
+{
+public:
+  cmFileTimeComparison();
+  ~cmFileTimeComparison();
+
+  /**
+   *  Compare file modification times.
+   *  Return true for successful comparison and false for error.
+   *  When true is returned, result has -1, 0, +1 for
+   *  f1 older, same, or newer than f2.
+   */
+  bool FileTimeCompare(const char* f1, const char* f2, int* result);
+
+  /**
+   *  Compare file modification times.  Return true unless both files
+   *  exist and have modification times less than 1 second apart.
+   */
+  bool FileTimesDiffer(const char* f1, const char* f2);
+
+protected:
+
+  cmFileTimeComparisonInternal* Internals;
+};
+
+
+#endif
+