I noticed that Houdini had a few errors when trying to compile on 4.18 for ARM64. I fixed these and submitted them in PR #77 [github.com]. I wanted to post here for a historical reference for future surfers.

I'm now running Houdini on my Samsung Tab S2

You fixes should by integrated now: https://github.com/sideeffects/HoudiniEngineForUnreal/commit/49c86a4fbd18258fd5e49403047bd2dff803d3af [github.com]