I have successfully built Unreal Engine 5.0.0 Preview from source on my machine:
.-/+oossssoo+/-. bengt@bengt-desktop
`:+ssssssssssssssssss+:` -------------------
-+ssssssssssssssssssyyssss+- OS: Ubuntu 20.04.3 LTS x86_64
.ossssssssssssssssssdMMMNysssso. Kernel: 5.13.0-28-generic
/ssssssssssshdmmNNmmyNMMMMhssssss/ Uptime: 3 days, 2 hours, 48 mins
+ssssssssshmydMMMMMMMNddddyssssssss+ Packages: 2767 (dpkg), 12 (snap)
/sssssssshNMMMyhhyyyyhmNMMMNhssssssss/ Shell: bash 5.0.17
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Resolution: 2560x1440
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ DE: GNOME
ossyNMMMNyMMhsssssssssssssshmmmhssssssso WM: Mutter
ossyNMMMNyMMhsssssssssssssshmmmhssssssso WM Theme: Adwaita
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ Theme: Adwaita-dark [GTK2/3]
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Icons: Yaru [GTK2/3]
/sssssssshNMMMyhhyyyyhdNMMMNhssssssss/ Terminal: gnome-terminal
+sssssssssdmydMMMMMMMMddddyssssssss+ CPU: AMD Ryzen Threadripper 1950X (32) @ 3.400GHz
/ssssssssssshdmNNNNmyNMMMMhssssss/ GPU: AMD ATI Radeon RX Vega 56/64
.ossssssssssssssssssdMMMNysssso. Memory: 17318MiB / 64159MiB
-+sssssssssssssssssyyyssss+-
`:+ssssssssssssssssss+:`
.-/+oossssoo+/-.
However, when start the Unreal Editor, I get a Segmentation fault. How can I debug this error?
bengt@bengt-desktop:~/Downloads/Projekte/github.com/EpicGames/UnrealEngine5$ ./Engine/Binaries/Linux/UnrealEditor
[...]
Segmentation fault (core dumped)
I noticed that when I try to run the editor via the UnrealVersionSelector, I get a similar error:
$ ./Engine/Binaries/Linux/UnrealVersionSelector-Linux-Shipping -editor
5.0.0-0+++UE5+Release-5.0-EarlyAccess 522 0
Disabling core dumps.
Loading text-based GConfig...
Signal 11 caught.
Malloc Size=262146 LargeMemoryPoolOffset=262162
CommonUnixCrashHandler: Signal=11
Engine crash handling finished; re-raising signal 11 for the default handler. Good bye.
Exiting abnormally (error code: 1)