New comment by andkem on void-packages repository

https://github.com/void-linux/void-packages/pull/24678#issuecomment-687607213

Comment:
They first released 0.99.4 as a beta test for version 1.0.0, but then they decided that it was stable enough and released 0.99.4 as a proper release. (Or rather, it is still a beta version and initial release was for Windows, Mac and Debian for testing, but has then been expanded to more platforms which makes me think this should be all right.)

They bundle the librtprocess code with Siril and build it automatically if it isn't found when you're not cross-compiling. It lives in a subdirectory and uses cmake to build.

I'll have a look at creating a proper package for librtprocess, which I think is preferable to patching the Siril build process to allow building it for cross compilation.