# missing vtkImageRenderManager and other headers

**URL:** https://discourse.vtk.org/t/missing-vtkimagerendermanager-and-other-headers/12792
**Category:** Support
**Created:** [November 27, 2023, 10:27am UTC](https://discourse.vtk.org/t/missing-vtkimagerendermanager-and-other-headers/12792 "2023-11-27T10:27:29Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![realwhzc](https://discourse.vtk.org/user_avatar/discourse.vtk.org/realwhzc/32/9186_2.png) [@realwhzc](https://discourse.vtk.org/u/realwhzc)
#### Post date: [November 27, 2023, 10:27am UTC](https://discourse.vtk.org/t/missing-vtkimagerendermanager-and-other-headers/12792/1 "2023-11-27T10:27:29Z")

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There is a folder(Rendering/Parallel) in the source code, but it doesn’t seem to have been compiled.  
How can I make the compiled result contain the headers in this folder？

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### Author: ![ben.boeckel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [November 27, 2023, 12:34pm UTC](https://discourse.vtk.org/t/missing-vtkimagerendermanager-and-other-headers/12792/2 "2023-11-27T12:34:51Z")

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You can tell CMake you need this module by passing it `-DVTK_MODULE_ENABLE_VTK_RenderingParallel=YES`. There may be conflicts with other requests; the error messages should hint what they are.

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### Author: ![realwhzc](https://discourse.vtk.org/user_avatar/discourse.vtk.org/realwhzc/32/9186_2.png) [@realwhzc](https://discourse.vtk.org/u/realwhzc)
#### Post date: [November 27, 2023, 12:51pm UTC](https://discourse.vtk.org/t/missing-vtkimagerendermanager-and-other-headers/12792/3 "2023-11-27T12:51:14Z")

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Thank you! I didn’t find this option until I enabled “Advanced”. 😄 😄