Tools like linuxdeployqt and the linuxdeploy AppImage plugin come with and use appimagetool as a lower-level tool under the hood to convert the generated AppDir to AppImage. Unless you are doing very special things, there is usually no need to operate appimagetool directly.
@probono
Excuse me. Would you please help me to figure out linuxdeploy does not package core library.
I have read the wiki page about creating appimages that are compatible with many systems.
and I notice that linuxdeploy does not package core library such as libc.so.6, libstdc++.so.6, etc.
This is intentional. Why would you want to package them? They are part of every Linux target system, and we are not packaging them in order to make the resulting AppImages less “bloated”.