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. 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.