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diff --git a/Source/cmLoadCacheCommand.h b/Source/cmLoadCacheCommand.h
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+++ b/Source/cmLoadCacheCommand.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 cmLoadCacheCommand_h
+#define cmLoadCacheCommand_h
+
+#include "cmCommand.h"
+
+/** \class cmLoadCacheCommand
+ * \brief load a cache file
+ *
+ * cmLoadCacheCommand loads the non internal values of a cache file
+ */
+class cmLoadCacheCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  virtual cmCommand* Clone()
+    {
+    return new cmLoadCacheCommand;
+    }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  virtual bool InitialPass(std::vector<std::string> const& args,
+                           cmExecutionStatus &status);
+
+  /**
+   * The name of the command as specified in CMakeList.txt.
+   */
+  virtual const char* GetName() const { return "load_cache";}
+
+  /**
+   * Succinct documentation.
+   */
+  virtual const char* GetTerseDocumentation() const
+    {
+    return "Load in the values from another project's CMake cache.";
+    }
+
+  /**
+   * More documentation.
+   */
+  virtual const char* GetFullDocumentation() const
+    {
+    return
+      "  load_cache(pathToCacheFile READ_WITH_PREFIX\n"
+      "             prefix entry1...)\n"
+      "Read the cache and store the requested entries in variables with "
+      "their name prefixed with the given prefix.  "
+      "This only reads the values, and does not create entries in the local "
+      "project's cache.\n"
+      "  load_cache(pathToCacheFile [EXCLUDE entry1...]\n"
+      "             [INCLUDE_INTERNALS entry1...])\n"
+      "Load in the values from another cache and store them in the local "
+      "project's cache as internal entries.  This is useful for a project "
+      "that depends on another project built in a different tree.  "
+      "EXCLUDE option can be used to provide a list of entries to be "
+      "excluded.  "
+      "INCLUDE_INTERNALS can be used to provide a list of internal entries "
+      "to be included.  Normally, no internal entries are brought in.  Use "
+      "of this form of the command is strongly discouraged, but it is "
+      "provided for backward compatibility.";
+    }
+
+  cmTypeMacro(cmLoadCacheCommand, cmCommand);
+protected:
+
+  std::set<cmStdString> VariablesToRead;
+  std::string Prefix;
+
+  bool ReadWithPrefix(std::vector<std::string> const& args);
+  void CheckLine(const char* line);
+};
+
+
+#endif