ENH: backwards compatible for VTK 4.0, add cmake version requires

1 files changed, 45 insertions, 0 deletions

diff --git a/Source/cmCMakeMinimumRequired.cxx b/Source/cmCMakeMinimumRequired.cxx
new file mode 100644
index 0000000000..6be31de0d7
--- /dev/null
+++ b/Source/cmCMakeMinimumRequired.cxx
@@ -0,0 +1,45 @@
+/*=========================================================================
+
+  Program:   Insight Segmentation & Registration Toolkit
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Insight Consortium. All rights reserved.
+  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm 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"
+
+// cmCMakeMinimumRequired
+bool cmCMakeMinimumRequired::InitialPass(std::vector<std::string> const& args)
+{
+  if(args.size() != 2)
+    {
+    this->SetError("called with incorrect number of arguments");
+    return false;
+    }
+  if(args[0] == "VERSION")
+    {
+    m_Makefile->AddDefinition("CMAKE_MINIMUM_REQUIRED_VERSION", args[1].c_str());
+    }
+  float version = float(m_Makefile->GetMajorVersion());
+  version += (float(m_Makefile->GetMinorVersion()) * .1);
+  float reqVersion = 0;
+  sscanf(args[1].c_str(), "%f", &reqVersion);
+  if(reqVersion > version)
+    {
+    std::strstream str;
+    str << "WARNING: This project requires version: " << args[1].c_str() << " of cmake.\n"
+        << "You are running version: " << version << std::ends;
+    cmSystemTools::Message(str.str());
+    delete [] str.str();
+    }
+  return true;
+}
+