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96afb12087
This converts the CMake license to a pure 3-clause OSI-approved BSD License. We drop the previous license clause requiring modified versions to be plainly marked. We also update the CMake copyright to cover the full development time range.
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#ifndef cmUnsetCommand_h
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#define cmUnsetCommand_h
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#include "cmCommand.h"
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/** \class cmUnsetCommand
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* \brief Unset a CMAKE variable
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*
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* cmUnsetCommand unsets or removes a variable.
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*/
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class cmUnsetCommand : public cmCommand
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{
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public:
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/**
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* This is a virtual constructor for the command.
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*/
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virtual cmCommand* Clone()
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{
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return new cmUnsetCommand;
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}
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/**
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* This is called when the command is first encountered in
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* the CMakeLists.txt file.
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*/
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virtual bool InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus &status);
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/**
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* This determines if the command is invoked when in script mode.
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*/
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virtual bool IsScriptable() { return true; }
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/**
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* The name of the command as specified in CMakeList.txt.
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*/
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virtual const char* GetName() {return "unset";}
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/**
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* Succinct documentation.
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*/
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virtual const char* GetTerseDocumentation()
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{
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return "Unset a variable, cache variable, or environment variable.";
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}
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/**
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* More documentation.
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*/
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virtual const char* GetFullDocumentation()
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{
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return
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" unset(<variable> [CACHE])\n"
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"Removes the specified variable causing it to become undefined. "
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"If CACHE is present then the variable is removed from the cache "
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"instead of the current scope.\n"
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"<variable> can be an environment variable such as:\n"
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" unset(ENV{LD_LIBRARY_PATH})\n"
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"in which case the variable will be removed from the current "
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"environment.";
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}
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cmTypeMacro(cmUnsetCommand, cmCommand);
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};
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#endif
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