It may be tempting to specify `-t glslang`, but this will cause installation to fail. So don't.
Using `--parallel` on CMake incorrectly passes `dmake ... -jn` instead of `dmake ... -j n`, this is a bug with OmniOS's CMake, it's recommended to not use this option until it's fixed.
You may also need to install `gmake` in order to properly build FFmpeg, this is provided by the `build-essential` package.
If it wasn't obvious already, you require a X11 server to properly run the emulator within OmniOS, [this guide](https://web.archive.org/web/20260424200928/https://geekblood.wordpress.com/2017/10/26/installing-x11-and-a-desktop-environment-on-omnios/) is a great starting point for that, the links to pkgsrc are outdated so follow [this exemplar](https://pkgsrc.smartos.org/install-on-illumos/) as well.
Use `gmake` to properly build all utilities. You require an X11 server, [this guide](https://web.archive.org/web/20260424200928/https://geekblood.wordpress.com/2017/10/26/installing-x11-and-a-desktop-environment-on-omnios/) details how to attain one, the links to pkgsrc on said guide [are better found here](https://pkgsrc.smartos.org/install-on-illumos/).
For Solaris based OSes, `${CMAKE_SYSTEM_NAME}` isn't properly set on CMake (it's set to i686 on AMD64), you may find issues when building OpenSSL from `openssl-cmake`.
For Solaris based OSes, `${CMAKE_SYSTEM_PROCESSOR}` isn't properly set on CMake (it's set to i686 on AMD64, must be `amd64`), you may find issues when building OpenSSL from `openssl-cmake`.