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diff --git a/Source/CPack/cmCPackPKGGenerator.h b/Source/CPack/cmCPackPKGGenerator.h
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+++ b/Source/CPack/cmCPackPKGGenerator.h
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+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc.
+
+  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 cmCPackPKGGenerator_h
+#define cmCPackPKGGenerator_h
+
+
+#include "cmCPackGenerator.h"
+
+class cmCPackComponent;
+
+/** \class cmCPackPKGGenerator
+ * \brief A generator for pkg files
+ *
+ */
+class cmCPackPKGGenerator : public cmCPackGenerator
+{
+public:
+  cmCPackTypeMacro(cmCPackPKGGenerator, cmCPackGenerator);
+
+  /**
+   * Construct generator
+   */
+  cmCPackPKGGenerator();
+  virtual ~cmCPackPKGGenerator();
+
+  virtual bool SupportsComponentInstallation() const;
+
+protected:
+  virtual int InitializeInternal();
+  virtual const char* GetOutputPostfix() { return "darwin"; }
+
+  // Copies or creates the resource file with the given name to the
+  // package or package staging directory dirName. The variable
+  // CPACK_RESOURCE_FILE_${NAME} (where ${NAME} is the uppercased
+  // version of name) specifies the input file to use for this file,
+  // which will be configured via ConfigureFile.
+  bool CopyCreateResourceFile(const std::string& name,
+                              const std::string& dirName);
+  bool CopyResourcePlistFile(const std::string& name, const char* outName = 0);
+
+  int CopyInstallScript(const std::string& resdir, const std::string& script,
+                        const std::string& name);
+
+  // Retrieve the name of package file that will be generated for this
+  // component. The name is just the file name with extension, and
+  // does not include the subdirectory.
+  std::string GetPackageName(const cmCPackComponent& component);
+
+  // Writes a distribution.dist file, which turns a metapackage into a
+  // full-fledged distribution. This file is used to describe
+  // inter-component dependencies. metapackageFile is the name of the
+  // metapackage for the distribution. Only valid for a
+  // component-based install.
+  void WriteDistributionFile(const char* metapackageFile);
+
+  // Subroutine of WriteDistributionFile that writes out the
+  // dependency attributes for inter-component dependencies.
+  void AddDependencyAttributes(const cmCPackComponent& component,
+                               std::set<const cmCPackComponent*>& visited,
+                               std::ostringstream& out);
+
+  // Subroutine of WriteDistributionFile that writes out the
+  // reverse dependency attributes for inter-component dependencies.
+  void AddReverseDependencyAttributes(
+    const cmCPackComponent& component,
+    std::set<const cmCPackComponent*>& visited, std::ostringstream& out);
+
+  // Generates XML that encodes the hierarchy of component groups and
+  // their components in a form that can be used by distribution
+  // metapackages.
+  void CreateChoiceOutline(const cmCPackComponentGroup& group,
+                           std::ostringstream& out);
+
+  /// Create the "choice" XML element to describe a component group
+  /// for the installer GUI.
+  void CreateChoice(const cmCPackComponentGroup& group,
+                    std::ostringstream& out);
+
+  /// Create the "choice" XML element to describe a component for the
+  /// installer GUI.
+  void CreateChoice(const cmCPackComponent& component,
+                    std::ostringstream& out);
+
+  // Escape the given string to make it usable as an XML attribute
+  // value.
+  std::string EscapeForXML(std::string str);
+
+  // The PostFlight component when creating a metapackage
+  cmCPackComponent PostFlightComponent;
+
+};
+
+#endif