old_contents: from spack import *
  
  class Vtk(Package):
      """The Visualization Toolkit (VTK) is an open-source, freely
      available software system for 3D computer graphics, image
      processing and visualization. """
      homepage = "http://www.vtk.org"
      url      = "http://www.vtk.org/files/release/6.1/VTK-6.1.0.tar.gz"
  
      version("7.0.0", "5fe35312db5fb2341139b8e4955c367d", url="http://www.vtk.org/files/release/7.0/VTK-7.0.0.tar.gz")
  
      version("6.3.0", '0231ca4840408e9dd60af48b314c5b6d', url="http://www.vtk.org/files/release/6.3/VTK-6.3.0.tar.gz")
  
      version('6.1.0', '25e4dfb3bad778722dcaec80cd5dab7d')
  
      depends_on("qt")
  
      def install(self, spec, prefix):
          with working_dir('spack-build', create=True):
              cmake_args = [
                  "..",
                  "-DBUILD_SHARED_LIBS=ON",
                  # Disable wrappers for other languages.
                  "-DVTK_WRAP_PYTHON=OFF",
                  "-DVTK_WRAP_JAVA=OFF",
                  "-DVTK_WRAP_TCL=OFF"]
              cmake_args.extend(std_cmake_args)
  
              # Enable Qt support here.
              cmake_args.extend([
                  "-DQT_QMAKE_EXECUTABLE:PATH=%s/qmake" % spec['qt'].prefix.bin,
                  "-DVTK_Group_Qt:BOOL=ON",
                  # Ignore webkit because it's hard to build w/Qt
                  "-DVTK_Group_Qt=OFF",
                  "-DModule_vtkGUISupportQt:BOOL=ON",
                  "-DModule_vtkGUISupportQtOpenGL:BOOL=ON"
                  ])
  
              if spec['qt'].satisfies('@5'):
                  cmake_args.append("-DVTK_QT_VERSION:STRING=5")
  
              cmake(*cmake_args)
              make()
              make("install")
  
new_contents: from spack import *
  
  class Vtk(Package):
      """The Visualization Toolkit (VTK) is an open-source, freely
      available software system for 3D computer graphics, image
      processing and visualization. """
      homepage = "http://www.vtk.org"
      url      = "http://www.vtk.org/files/release/6.1/VTK-6.1.0.tar.gz"
  
      version("7.0.0", "5fe35312db5fb2341139b8e4955c367d", url="http://www.vtk.org/files/release/7.0/VTK-7.0.0.tar.gz")
  
      version("6.3.0", '0231ca4840408e9dd60af48b314c5b6d', url="http://www.vtk.org/files/release/6.3/VTK-6.3.0.tar.gz")
  
      version('6.1.0', '25e4dfb3bad778722dcaec80cd5dab7d')
  
      depends_on("qt")
  
      def install(self, spec, prefix):
          with working_dir('spack-build', create=True):
              cmake_args = [
                  "..",
                  "-DBUILD_SHARED_LIBS=ON",
                  # Disable wrappers for other languages.
                  "-DVTK_WRAP_PYTHON=OFF",
                  "-DVTK_WRAP_JAVA=OFF",
                  "-DVTK_WRAP_TCL=OFF"]
              cmake_args.extend(std_cmake_args)
  
              # Enable Qt support here.
              cmake_args.extend([
                  "-DQT_QMAKE_EXECUTABLE:PATH=%s/qmake" % spec['qt'].prefix.bin,
                  "-DVTK_Group_Qt:BOOL=ON",
                  # Ignore webkit because it's hard to build w/Qt
                  "-DVTK_Group_Qt=OFF",
                  "-DModule_vtkGUISupportQt:BOOL=ON",
                  "-DModule_vtkGUISupportQtOpenGL:BOOL=ON"
                  ])
  
              if spec['qt'].satisfies('@5'):
                  cmake_args.append("-DVTK_QT_VERSION:STRING=5")
  
              if spec.satisfies("@6.1.0"):
                  cmake_args.append("-DCMAKE_C_FLAGS=-DGLX_GLXEXT_LEGACY")
                  cmake_args.append("-DCMAKE_CXX_FLAGS=-DGLX_GLXEXT_LEGACY")
  
              cmake(*cmake_args)
              make()
              make("install")
  
subject: Fix build for vtk6.1.0