Hi,
I had the same issue yesterday…
Visit also this page, Can't install UE4 on linux - Platform & Builds - Epic Developer Community Forums
I updated current path with the 4.13 I got from git.
- be sure to have clang, installed ( sudo apt-get install clang) to compile libhlslcc.a
- cd Engine/Source/ThirdParty/hlslcc/hlslcc/projects/Linux
- make
- mv …/…/lib/Linux/libhlslcc.a …/…/lib/Linux/x86_64-unknown-linux-gnu