+ cd VTK5.10.1/Rendering
+ curl -O http://www.creatis.insa-lyon.fr/software/public/creatools/crea_ThirdParty_Libraries/source/vtk-5.10.1.vtkXOpenGLRenderWindow.patch
+ patch < vtk-5.10.1.vtkXOpenGLRenderWindow.patch
+ # MacOS, clever enough to understand it *has* to uncompress, doesn't understand tar -z :-(