Convert to musicxml from the command line with new pages

When exporting to MusicXML from within the Musescore application, i can choose "All layout" to get in the new pages in the .musicxml output.

When using mscore from the command line, i can not control the export options, and i can't get the a musicxml conversion with new pages in it.

Is there some way i can either:
- Control the export option i need from the command line
- Automate Musescore export via a plugin
- Get a recompiled build of musescore with the needed default export options set

Any guidance here would be much appreciated, thanks.