I was able to build it on my ubuntu 20.10 latest without problems, building procedure is exactly the same like with ue 4:
In short, you’ll need to:
- download and extract early-access version from github (see link)
- I did change the owner of the extracted folder+subfolders to the user I’m logged in with so I have full read and write access.
- enter the folder you extracted the engine to
- run “./setup.sh” inside the folder
- run “./GenerateProjectFiles.sh”
- run “make” (this can take about an hour)