122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#include "cmCMakeMinimumRequired.h"
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#include "cmVersion.h"
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// cmCMakeMinimumRequired
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bool cmCMakeMinimumRequired::InitialPass(std::vector<std::string> const& args)
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{
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// Process arguments.
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std::string version_string;
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bool doing_version = false;
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bool fatal_error = false;
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for(unsigned int i=0; i < args.size(); ++i)
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{
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if(args[i] == "VERSION")
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{
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doing_version = true;
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}
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else if(args[i] == "FATAL_ERROR")
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{
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if(doing_version)
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{
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this->SetError("called with no value for VERSION.");
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return false;
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}
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doing_version = false;
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fatal_error = true;
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}
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else if(doing_version)
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{
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doing_version = false;
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version_string = args[i];
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}
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else
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{
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cmOStringStream e;
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e << "called with unknown argument \"" << args[i].c_str() << "\".";
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this->SetError(e.str().c_str());
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return false;
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}
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}
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if(doing_version)
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{
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this->SetError("called with no value for VERSION.");
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return false;
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}
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// Make sure there was a version to check.
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if(version_string.empty())
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{
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return true;
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}
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// Save the required version string.
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m_Makefile->AddDefinition("CMAKE_MINIMUM_REQUIRED_VERSION", version_string.c_str());
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// Get the current version number.
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int current_major = m_Makefile->GetMajorVersion();
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int current_minor = m_Makefile->GetMinorVersion();
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int current_patch = m_Makefile->GetPatchVersion();
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// Parse the required version number. If no patch-level is given
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// use zero.
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int required_major = 0;
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int required_minor = 0;
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int required_patch = 0;
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if(sscanf(version_string.c_str(), "%d.%d.%d",
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&required_major, &required_minor, &required_patch) < 2)
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{
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cmOStringStream e;
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e << "could not parse VERSION \"" << version_string.c_str() << "\".";
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this->SetError(e.str().c_str());
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return false;
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}
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// Compare the version numbers.
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if(current_major < required_major ||
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current_major == required_major &&
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current_minor < required_minor ||
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current_major == required_major &&
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current_minor == required_minor &&
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current_patch < required_patch)
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{
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// The current version is too low.
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cmOStringStream e;
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if(!fatal_error)
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{
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e << "WARNING: ";
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}
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e << "This project requires version " << version_string.c_str() << " of CMake. "
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<< "You are running version "
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<< current_major << "." << current_minor << "." << current_patch << ".\n";
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if(fatal_error)
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{
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cmSystemTools::Error(e.str().c_str());
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cmSystemTools::SetFatalErrorOccured();
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}
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else
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{
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cmSystemTools::Message(e.str().c_str());
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}
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}
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return true;
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}
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