So far, none of the Linux builds that I can find are built with Dolby Vision support, especially the ones on Ubuntu. So, tried to compile it form source (also wanted to have it in the form a .deb binary, so that it can be installed and removed using apt) but it failed to include DV support, because of missing packages and a bit of incomplete information in README. After some help from this forum (thanks to @s55) I finally managed to compile and build a .deb package, which I could easily install with apt package managed on Ubuntu 22.04 LTS.
The missing part in doc is installing cargo and libass-dev as part of the basic dependencies. Also install libgtk-4-dev (on top of already mentioned libgtk-3-dev) if building with GUI support. And most importantly, MUST run this:
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cargo install cargo-c
sudo snap install rustup --classic && rustup default stable
rustup target add x86_64-pc-windows-gnu
After that, I used checkinstall (instead of make install) to build the .deb package but that part was easy and pretty much painless.
In the end, Kodi/CoreELEC was able to successfully detect the DV from the resultant MKV and played back with any issue.
I have put together a script here, for anyone looking for the same: https://pastebin.com/raw/NEjGdsm0
The script was tested, and the binary was installed successfully on Ubuntu v22.04 LTS in the end. I suggest getting a VirtualBox VM (or something similar) to compile and build the package, instead of doing it directly on the target machine. Hope it helps others.
