Comment by tux1968

The recommended compatibility boilerplate for new projects is tedious. There must be a way to include this knowledge in cmake itself rather than requiring every "properly" configured project to get this right:

  cmake_minimum_required(VERSION 3.1)

  if(${CMAKE_VERSION} VERSION_LESS 3.12)
    cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
  else()
    cmake_policy(VERSION 3.12)
  endif()

This is all before you even start thinking about your own project.