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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 "cmCMakeMinimumRequired.h"
#include "cmVersion.h"
// cmCMakeMinimumRequired
bool cmCMakeMinimumRequired::InitialPass(std::vector<std::string> const& args)
{
// Process arguments.
std::string version_string;
bool doing_version = false;
bool fatal_error = false;
for(unsigned int i=0; i < args.size(); ++i)
{
if(args[i] == "VERSION")
{
doing_version = true;
}
else if(args[i] == "FATAL_ERROR")
{
if(doing_version)
{
this->SetError("called with no value for VERSION.");
return false;
}
doing_version = false;
fatal_error = true;
}
else if(doing_version)
{
doing_version = false;
version_string = args[i];
}
else
{
cmOStringStream e;
e << "called with unknown argument \"" << args[i].c_str() << "\".";
this->SetError(e.str().c_str());
return false;
}
}
if(doing_version)
{
this->SetError("called with no value for VERSION.");
return false;
}
// Make sure there was a version to check.
if(version_string.empty())
{
return true;
}
// Save the required version string.
m_Makefile->AddDefinition("CMAKE_MINIMUM_REQUIRED_VERSION", version_string.c_str());
// Get the current version number.
int current_major = m_Makefile->GetMajorVersion();
int current_minor = m_Makefile->GetMinorVersion();
int current_patch = m_Makefile->GetPatchVersion();
// Parse the required version number. If no patch-level is given
// use zero.
int required_major = 0;
int required_minor = 0;
int required_patch = 0;
if(sscanf(version_string.c_str(), "%d.%d.%d",
&required_major, &required_minor, &required_patch) < 2)
{
cmOStringStream e;
e << "could not parse VERSION \"" << version_string.c_str() << "\".";
this->SetError(e.str().c_str());
return false;
}
// Compare the version numbers.
if(current_major < required_major ||
current_major == required_major &&
current_minor < required_minor ||
current_major == required_major &&
current_minor == required_minor &&
current_patch < required_patch)
{
// The current version is too low.
cmOStringStream e;
if(!fatal_error)
{
e << "WARNING: ";
}
e << "This project requires version " << version_string.c_str() << " of CMake. "
<< "You are running version "
<< current_major << "." << current_minor << "." << current_patch << ".\n";
if(fatal_error)
{
cmSystemTools::Error(e.str().c_str());
cmSystemTools::SetFatalErrorOccured();
}
else
{
cmSystemTools::Message(e.str().c_str());
}
}
return true;
}
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