If you want to make a static build with an ancient glib (so it runs everywhere) but you want to use a recent compiler then CentOS is the straightforward option.

If you want to make a static build with an ancient glib (so it runs everywhere) but you want to use a recent compiler then CentOS is the straightforward option. It provides modern toolchains over an ancient base system I think this is how you make Appimage files that run on all distros (maybe someone can correct me if I'm wrong)