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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: ";
m += cmJoin(args, " ");
this->SetError(m);
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
cmState* state = this->Makefile->GetState();
const char* existingValue = state->GetCacheEntryValue(args[0]);
if (existingValue) {
if (state->GetCacheEntryType(args[0]) != cmState::UNINITIALIZED) {
state->SetCacheEntryProperty(args[0], "HELPSTRING", args[1]);
return true;
}
initialValue = existingValue;
}
if (args.size() == 3) {
initialValue = args[2];
}
bool init = cmSystemTools::IsOn(initialValue.c_str());
this->Makefile->AddCacheDefinition(args[0], init ? "ON" : "OFF",
args[1].c_str(), cmState::BOOL);
return true;
}
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