In case anyone finds it useful, I've put together a top-level Makefile that automates the process of cross-compiling the UniBone/QBone software on a Linux host. The Makefile takes care all the necessary steps, including downloading the required toolchains and support packages, fetching and patching the QUniBone code and orchestrating the build process.
So far I've only tested this on Linux Mint 22.1 / Ubuntu 24.04. But I expect it will work on most Linux distros, including WSL.
Cheers,
Jay