tree b0996edcb1585e93f70d9b2066f7e6ff823ed517
parent ee7967eea439145673fa89e2d7d56d4932c182cc
author Cosmin Truta <ctruta@gmail.com> 1542515955 -0500
committer Cosmin Truta <ctruta@gmail.com> 1542515955 -0500

CMakeLists: Require CMake version 3.1 or newer

Although CMake version 3.0.2 was previously required, the policies
CMP0053 and CMP0054, introduced only in CMake version 3.1 and used
in this CMakeLists file, can have surprising effects under an older
CMake version.

Simplify the CMakeLists file by setting the global policy version
to 3.1, and remove the specific policy settings.

As an added bonus, remove the vestigial workarounds for all ancient
CMake versions.