# VMTK extension : build fails with VTK9

**URL:** <https://discourse.slicer.org/t/vmtk-extension-build-fails-with-vtk9/13840>\
**Category:** Development\
**Created:** [October 3, 2020, 4:31pm UTC](https://discourse.slicer.org/t/vmtk-extension-build-fails-with-vtk9/13840 "2020-10-03T16:31:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Post date:** [October 3, 2020, 4:31pm UTC](https://discourse.slicer.org/t/vmtk-extension-build-fails-with-vtk9/13840/1 "2020-10-03T16:31:51Z")

</div>

Slicer builds nicely with VTK9 on Arch Linux with gcc 10.2.

VMTK extension fails to build with these errors :

> [18%] Performing configure step for ‘VMTK’  
> loading initial cache file /home/arc/src/SlicerExtension-VMTK-SuperBuild/SlicerVmtk-build/VMTK-prefix/tmp/VMTK-cache-Release.cmake  
> CMake Error at CMake/CMakeOptions.cmake:75 (include):  
> include could not find load file:
> 
> ```
> /vtkWrapPython.cmake
> 
> ```
> 
> Call Stack (most recent call first):  
> vtkVmtk/CMakeLists.txt:25 (include)

> CMake Error at /home/arc/src/Slicer-SuperBuild/VTK-build/lib/cmake/vtk-9.0/vtk-config.cmake:78 (message):  
> The new name for the ‘vtkIOImage’ component is ‘IOImage’. By requesting at  
> least version 8.90, the new component names are now required.  
> Call Stack (most recent call first):  
> /home/arc/src/Slicer-SuperBuild/VTK-build/vtk-config.cmake:1 (include)  
> vtkVmtk/Utilities/vtkvmtkITK/CMakeLists.txt:12 (find\_package)

Can’t workaround this one.

Thank you for looking into it.