# Minimum CMake version

**URL:** https://discourse.vtk.org/t/minimum-cmake-version/2867
**Category:** Development
**Created:** [March 23, 2020, 7:04pm UTC](https://discourse.vtk.org/t/minimum-cmake-version/2867 "2020-03-23T19:04:13Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![mwestphal](https://discourse.vtk.org/user_avatar/discourse.vtk.org/mwestphal/32/19_2.png) [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [April 8, 2020, 2:05am UTC](https://discourse.vtk.org/t/minimum-cmake-version/2867/6 "2020-04-08T02:05:52Z")

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Didn’t we see someone running cmake 3.9 here :

> [@9.0.0.rc1 CMake policy error (using CMake 3.9.3)](https://discourse.vtk.org/t/9-0-0-rc1-cmake-policy-error-using-cmake-3-9-3/2976):
>
> Linux, rhel7, CMake 3.9.3, I passed no args to CMake, and configure fails with this error: CMake Error at ThirdParty/hdf5/CMakeLists.txt:2 (cmake\_policy): Policy “CMP0074” is not known to this version of CMake.

Rhel7.

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