# Could not Find HoloplayCore External Dependencies
**URL:** https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255
**Category:** Support
**Created:** [April 10, 2022, 10:36pm UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255 "2022-04-10T22:36:16Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Freya\_the\_Goddess](https://discourse.vtk.org/u/Freya_the_Goddess)
#### Post date: [April 10, 2022, 10:36pm UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255/1 "2022-04-10T22:36:16Z")
Dear all,
I want to know how to solve this?
I am building basic VTK-9.1.0 and it is working.
Now I want to build again with more options, in `ccmake` I am enabling several VTK Modules:
`RenderingOpenVR PowerCrust PoissonReconstruction SplineDrivenImageSlicer`
But it returns error (image shown below). I see this github that might be related:
> **[GitHub - Kitware/LookingGlassVTKModule](https://github.com/Kitware/LookingGlassVTKModule)**
>
> Contribute to Kitware/LookingGlassVTKModule development by creating an account on GitHub.
I just don’t know whether to put clone the github above or install HoloPlayCore somewhere else and where to put it.
Thank You all
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### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [April 11, 2022, 7:42am UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255/2 "2022-04-11T07:42:34Z")
Hi @Freya_the_Goddess ,
You are enabling the LookingGlass remote module. Is that intentionnal ?
In any case, to disable it, set `VTK_MODULE_ENABLE_VTK_RenderingLookingGlass` to `NO` in cmake.
Best,
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### Author:  [@Freya\_the\_Goddess](https://discourse.vtk.org/u/Freya_the_Goddess)
#### Post date: [April 11, 2022, 12:08pm UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255/3 "2022-04-11T12:08:14Z")
Yes because I want to make example with that module.
How to make it work?
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### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [April 11, 2022, 1:07pm UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255/4 "2022-04-11T13:07:43Z")
Do you have a looking glass device ?
> **[Looking Glass Factory. The World's Leading Holographic Display Company.](https://lookingglassfactory.com/)**
>
> Introducing Looking Glass Portrait, your first personal holographic display. Designed for people, real and imagined. Available for pre-order today.
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### Author:  [@Freya\_the\_Goddess](https://discourse.vtk.org/u/Freya_the_Goddess)
#### Post date: [April 11, 2022, 1:58pm UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255/5 "2022-04-11T13:58:17Z")
No, so I couldn’t try the module without the device?
Didn’t know that.
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### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [April 12, 2022, 6:24am UTC](https://discourse.vtk.org/t/could-not-find-holoplaycore-external-dependencies/8255/6 "2022-04-12T06:24:11Z")
You can build VTK with holoplaycore if you install holoplaycore, but without a device, there is nothing to do.