# cmake showing warning while configuring

**URL:** https://discourse.vtk.org/t/cmake-showing-warning-while-configuring/6276
**Category:** Support
**Created:** [July 31, 2021, 8:56pm UTC](https://discourse.vtk.org/t/cmake-showing-warning-while-configuring/6276 "2021-07-31T20:56:43Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Asif\_Hossain](https://discourse.vtk.org/user_avatar/discourse.vtk.org/asif_hossain/32/3033_2.png) [@Asif\_Hossain](https://discourse.vtk.org/u/Asif_Hossain)
#### Post date: [July 31, 2021, 8:56pm UTC](https://discourse.vtk.org/t/cmake-showing-warning-while-configuring/6276/1 "2021-07-31T20:56:43Z")

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I am getting the following warning when i try to configure Vtk 9.0.3 in CMake.Myoperating sysytem is Ubuntu 20.04

Warning at Rendering/OpenGL2/CMakeLists.txt:359 (message):  
X11::Xcursor not found; custom cursors will be ignored.

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<div class="post-metadata">

### 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: [July 31, 2021, 9:14pm UTC](https://discourse.vtk.org/t/cmake-showing-warning-while-configuring/6276/2 "2021-07-31T21:14:58Z")

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You’re missing the `libxcursor-dev` package.