Require cmake 3.18 or newer.
# @author Vegard Sjonfjell
# @author Eirik Nygaard
# @author Arnstein Ressem
-cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
include(functions.cmake)
list(APPEND CMAKE_MODULE_PATH
