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diff --git a/Source/cmExportFileGenerator.h b/Source/cmExportFileGenerator.h
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+/*=========================================================================
+
+  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 cmExportFileGenerator_h
+#define cmExportFileGenerator_h
+
+#include "cmCommand.h"
+
+/** \class cmExportFileGenerator
+ * \brief Generate a file exporting targets from a build or install tree.
+ *
+ * cmExportFileGenerator is the superclass for
+ * cmExportBuildFileGenerator and cmExportInstallFileGenerator.  It
+ * contains common code generation routines for the two kinds of
+ * export implementations.
+ */
+class cmExportFileGenerator
+{
+public:
+  /** Set the full path to the export file to generate.  */
+  void SetExportFile(const char* mainFile);
+
+  /** Set the namespace in which to place exported target names.  */
+  void SetNamespace(const char* ns) { this->Namespace = ns; }
+
+  /** Add a configuration to be exported.  */
+  void AddConfiguration(const char* config);
+
+  /** Actually generate the export file.  Returns whether there was an
+      error.  */
+  bool GenerateImportFile();
+protected:
+
+  typedef std::map<cmStdString, cmStdString> ImportPropertyMap;
+
+  // Generate per-configuration target information to the given output
+  // stream.
+  void GenerateImportConfig(std::ostream& os, const char* config);
+
+  // Methods to implement export file code generation.
+  void GenerateImportHeaderCode(std::ostream& os, const char* config = 0);
+  void GenerateImportFooterCode(std::ostream& os);
+  void GenerateImportVersionCode(std::ostream& os);
+  void GenerateImportTargetCode(std::ostream& os, cmTarget* target);
+  void GenerateImportPropertyCode(std::ostream& os, const char* config,
+                                  cmTarget* target,
+                                  ImportPropertyMap const& properties);
+
+  // Collect properties with detailed information about targets beyond
+  // their location on disk.
+  void SetImportDetailProperties(const char* config,
+                                 std::string const& suffix, cmTarget* target,
+                                 ImportPropertyMap& properties);
+
+  /** Each subclass knows how to generate its kind of export file.  */
+  virtual bool GenerateMainFile(std::ostream& os) = 0;
+
+  /** Each subclass knows where the target files are located.  */
+  virtual void GenerateImportTargetsConfig(std::ostream& os,
+                                           const char* config,
+                                           std::string const& suffix) = 0;
+
+  /** Each subclass knows how to complain about a target that is
+      missing from an export set.  */
+  virtual void ComplainAboutMissingTarget(cmTarget*, const char* dep) = 0;
+
+  // The namespace in which the exports are placed in the generated file.
+  std::string Namespace;
+
+  // The set of configurations to export.
+  std::vector<std::string> Configurations;
+
+  // The file to generate.
+  std::string MainImportFile;
+  std::string FileDir;
+  std::string FileBase;
+  std::string FileExt;
+
+  // The set of targets included in the export.
+  std::set<cmTarget*> ExportedTargets;
+};
+
+#endif