CMake/Source/cmOptionCommand.cxx

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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
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Copyright (c) 2002 Insight Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
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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.
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=========================================================================*/
#include "cmOptionCommand.h"
// cmOptionCommand
bool cmOptionCommand::InitialPass(std::vector<std::string> const& args)
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{
bool argError = false;
if(args.size() < 2)
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{
argError = true;
}
// for VTK 4.0 we have to support the option command with more than 3 arguments
// if CMAKE_MINIMUM_REQUIRED_VERSION is not defined, if CMAKE_MINIMUM_REQUIRED_VERSION
// is defined, then we can have stricter checking.
if(m_Makefile->GetDefinition("CMAKE_MINIMUM_REQUIRED_VERSION"))
{
if(args.size() > 3)
{
argError = true;
}
}
if(argError)
{
std::string m = "called with incorrect number of arguments: ";
for(int i =0; i < args.size(); ++i)
{
m += args[i];
m += " ";
}
this->SetError(m.c_str());
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return false;
}
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// Now check and see if the value has been stored in the cache
// already, if so use that value and don't look for the program
const char* cacheValue
= m_Makefile->GetDefinition(args[0].c_str());
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if(!cacheValue)
{
std::string initialValue = "Off";
if(args.size() == 3)
{
initialValue = args[2];
}
m_Makefile->AddCacheDefinition(args[0].c_str(),
cmSystemTools::IsOn(initialValue.c_str()),
args[1].c_str());
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}
return true;
}