Found this interesting Intro to Lumberyard on Dev.to by Jeikabu on how to setup and install Lumberyard. One portions he goes through is the Build system LMBR_WAF that Lumberyard uses . And the commands

Recently I downloaded amazon Lumberyard 1.21 which got upgraded to version 1.21.1. Listen to my impressions or read a short summary below. Episode Link: listen to More episodes on Anchor.fm/williamteh