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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.
============================================================================*/
#include "cmOptionCommand.h"
// cmOptionCommand
bool cmOptionCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
bool argError = false;
if(args.size() < 2)
{
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(this->Makefile->GetDefinition("CMAKE_MINIMUM_REQUIRED_VERSION"))
{
if(args.size() > 3)
{
argError = true;
}
}
if(argError)
{
std::string m = "called with incorrect number of arguments: ";
for(size_t i =0; i < args.size(); ++i)
{
m += args[i];
m += " ";
}
this->SetError(m.c_str());
return false;
}
std::string initialValue = "Off";
// 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
cmCacheManager::CacheIterator it =
this->Makefile->GetCacheManager()->GetCacheIterator(args[0].c_str());
if(!it.IsAtEnd())
{
if ( it.GetType() != cmCacheManager::UNINITIALIZED )
{
it.SetProperty("HELPSTRING", args[1].c_str());
this->Makefile->UseCacheDefinition(it);
return true;
}
if ( it.GetValue() )
{
initialValue = it.GetValue();
}
}
if(args.size() == 3)
{
initialValue = args[2];
}
bool init = cmSystemTools::IsOn(initialValue.c_str());
this->Makefile->AddCacheDefinition(args[0].c_str(), init? "ON":"OFF",
args[1].c_str(), cmCacheManager::BOOL);
return true;
}
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