ENH: ADD REMOVE_DEFINITION command. Fix feature request: Bug #182 - Add opposite to ADD_DEFINITIONS

Source/cmRemoveDefinitionsCommand.h

@@ -0,0 +1,82 @@
+/*=========================================================================
+
+  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 cmRemoveDefinitionsCommand_h
+#define cmRemoveDefinitionsCommand_h
+
+#include "cmCommand.h"
+
+/** \class cmRemoveDefinitionsCommand
+ * \brief Specify a list of compiler defines
+ *
+ * cmRemoveDefinitionsCommand specifies a list of compiler defines. These defines will
+ * be removed from the compile command.  
+ */
+class cmRemoveDefinitionsCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  virtual cmCommand* Clone() 
+    {
+    return new cmRemoveDefinitionsCommand;
+    }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  virtual bool InitialPass(std::vector<std::string> const& args);
+
+  /**
+   * This determines if the command gets propagated down
+   * to makefiles located in subdirectories.
+   */
+  virtual bool IsInherited() {return true;}
+
+  /**
+   * The name of the command as specified in CMakeList.txt.
+   */
+  virtual const char* GetName() {return "REMOVE_DEFINITIONS";}
+  
+  /**
+   * Succinct documentation.
+   */
+  virtual const char* GetTerseDocumentation() 
+    {
+    return "Removes -D define flags to the command line of C and C++ compilers.";
+    }
+  
+  /**
+   * More documentation.
+   */
+  virtual const char* GetFullDocumentation()
+    {
+    return
+      "  REMOVE_DEFINITIONS(-DFOO -DBAR ...)\n"
+      "Removes flags from command line of C and C++ compilers.  "
+      "This command can be used to remove any flag from a compile line, "
+      "but the -D flag is accepted most C/C++ compilers.  "
+      "Other flags may not be as portable.";
+    }
+  
+  cmTypeMacro(cmRemoveDefinitionsCommand, cmCommand);
+};
+
+
+
+#endif