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/*=========================================================================
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.
=========================================================================*/
#include "cmVariableRequiresCommand.h"
#include "cmCacheManager.h"
// cmLibraryCommand
bool cmVariableRequiresCommand::InitialPass(std::vector<std::string>const&
args)
{
if(args.size() < 3 )
{
this->SetError("called with incorrect number of arguments");
return false;
}
std::string testVariable = args[0];
if(!this->Makefile->IsOn(testVariable.c_str()))
{
return true;
}
std::string resultVariable = args[1];
bool requirementsMet = true;
std::string notSet;
bool hasAdvanced = false;
for(unsigned int i = 2; i < args.size(); ++i)
{
if(!this->Makefile->IsOn(args[i].c_str()))
{
requirementsMet = false;
notSet += args[i];
notSet += "\n";
cmCacheManager::CacheIterator it =
this->Makefile->GetCacheManager()->GetCacheIterator(args[i].c_str());
if(!it.IsAtEnd() && it.GetPropertyAsBool("ADVANCED"))
{
hasAdvanced = true;
}
}
}
const char* reqVar = this->Makefile->GetDefinition(resultVariable.c_str());
// if reqVar is unset, then set it to requirementsMet
// if reqVar is set to true, but requirementsMet is false , then
// set reqVar to false.
if(!reqVar || (!requirementsMet && this->Makefile->IsOn(reqVar)))
{
this->Makefile->AddDefinition(resultVariable.c_str(), requirementsMet);
}
if(!requirementsMet)
{
std::string message = "Variable assertion failed:\n";
message += testVariable +
" Requires that the following unset variables are set:\n";
message += notSet;
message += "\nPlease set them, or set ";
message += testVariable + " to false, and re-configure.\n";
if(hasAdvanced)
{
message +=
"One or more of the required variables is advanced."
" To set the variable, you must turn on advanced mode in cmake.";
}
cmSystemTools::Error(message.c_str());
}
return true;
}
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