Build failure with cmake-4.0

[yarda]

cmake-4.0 dropped old policies for cmake older than 3.5, so in order to support cmake-4.0, either the cmake_minimum_required needs to be bumped to version 3.5 at least:

cmake_minimum_required(VERSION 3.5)

or interval needs to be added, e.g.:

cmake_minimum_required(VERSION 2.8.5...4.0)