# 9.0.0.rc1 CMake policy error (using CMake 3.9.3)

**URL:** https://discourse.vtk.org/t/9-0-0-rc1-cmake-policy-error-using-cmake-3-9-3/2976
**Category:** Support
**Created:** [April 7, 2020, 4:51pm UTC](https://discourse.vtk.org/t/9-0-0-rc1-cmake-policy-error-using-cmake-3-9-3/2976 "2020-04-07T16:51:55Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![biagas](https://discourse.vtk.org/user_avatar/discourse.vtk.org/biagas/32/7380_2.png) [@biagas](https://discourse.vtk.org/u/biagas)
#### Post date: [April 7, 2020, 4:51pm UTC](https://discourse.vtk.org/t/9-0-0-rc1-cmake-policy-error-using-cmake-3-9-3/2976/1 "2020-04-07T16:51:55Z")

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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.

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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: [April 7, 2020, 5:10pm UTC](https://discourse.vtk.org/t/9-0-0-rc1-cmake-policy-error-using-cmake-3-9-3/2976/2 "2020-04-07T17:10:30Z")

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This was fixed in rc2 (commit ef72c8d49b49d56247ddf48c22dbc16a28b9c9d0).

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### Author: ![biagas](https://discourse.vtk.org/user_avatar/discourse.vtk.org/biagas/32/7380_2.png) [@biagas](https://discourse.vtk.org/u/biagas)
#### Post date: [April 7, 2020, 5:17pm UTC](https://discourse.vtk.org/t/9-0-0-rc1-cmake-policy-error-using-cmake-3-9-3/2976/3 "2020-04-07T17:17:40Z")

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Thanks.