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diff --git a/Source/cmWhileCommand.h b/Source/cmWhileCommand.h
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+++ b/Source/cmWhileCommand.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 cmWhileCommand_h
+#define cmWhileCommand_h
+
+#include "cmCommand.h"
+#include "cmFunctionBlocker.h"
+#include "cmListFileCache.h"
+
+class cmWhileFunctionBlocker : public cmFunctionBlocker
+{
+public:
+  cmWhileFunctionBlocker() {this->Depth=0;}
+  virtual ~cmWhileFunctionBlocker() {}
+  virtual bool IsFunctionBlocked(const cmListFileFunction& lff,
+                                 cmMakefile &mf,
+                                 cmExecutionStatus &);
+  virtual bool ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf);
+
+  std::vector<cmListFileArgument> Args;
+  std::vector<cmListFileFunction> Functions;
+private:
+  int Depth;
+};
+
+/// \brief Starts a while loop
+class cmWhileCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  virtual cmCommand* Clone()
+    {
+    return new cmWhileCommand;
+    }
+
+  /**
+   * This overrides the default InvokeInitialPass implementation.
+   * It records the arguments before expansion.
+   */
+  virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
+                                 cmExecutionStatus &);
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  virtual bool InitialPass(std::vector<std::string> const&,
+                           cmExecutionStatus &) { return false; }
+
+  /**
+   * This determines if the command is invoked when in script mode.
+   */
+  virtual bool IsScriptable() const { return true; }
+
+  /**
+   * The name of the command as specified in CMakeList.txt.
+   */
+  virtual const char* GetName() const { return "while";}
+
+  cmTypeMacro(cmWhileCommand, cmCommand);
+};
+
+
+#endif