Cmake 3.10 Boost error

[Jack-Byrne]

Bug Report

Building SDL Core with Ubuntu 18 default cmake version 3.10 causes build errors due to an issue with find boost module.

Reproduction Steps

1. Build sdl core

Expected Behavior

Core builds

Observed Behavior

Core build errors out with several messages similar to:

undefined reference to 'boost::detail::get_current_thread_data()'

OS & Version Information

• OS/Version: Ubuntu 18
• SDL Core Version: Develop