Let's try to make Nival's Cardboard plugin work under UE4?

Question

C++ / C#

Hello. I migrated from Unity to Anril for VR development and found that the cardboard plugins weren't working. Native Google requires a minimum device with Android 5, the built-in SimpleHMD is buggy.
The guys from Nival wrote down their own version of the plugin, but he does not want to build and it seems that this issue cannot be solved except on his own.
That's why I decided to seek the help of the community to fix a few build errors and do something really useful.
I myself am more of a game designer, I know a little C# and CG.
Here is the plugin itself:
https://github.com/NivalVR/UE4Cardboard
One bug in UE4Cardboard.Build.cs is fixed by replacing
Path.GetDirectoryName( RulesCompiler.GetModuleFilename("Renderer"))+"/Private",
with
"../../../../Source/Runtime/Renderer/Private",
Then it doesn't find include files, I don't know how to set relative paths to them.

Answer 1

What version of the engine?