How can I use appman in multi process mode in Linux?

I just signed up on this forum because I was excited to see [this post about qt application manager](http://www.qtcentre.org/threads/6894...cation+manager). There is not a lot of information about appman out there, but I am evaluating it for using with our application that will run on a Linux tablet. Currently I am just testing appman to see if it is suitable. My main goal behind using appman is to isolate less critical functions of the app (such as browsing a tutorial) from main functionality of the app such as controlling hydraulic valves, so that bugs in a less critical part of the app does not hinder the main functionality.

My question is: can I use appman in multiprocess mode under Linux? It looks like by default it is running in single process mode and when I try to run it in multi process I get this critical error:

Code:

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appman -c am-config.yaml -r --start-session-dbus --force-multi-process
[CRIT | am.system] WARNING: for the installer to work correctly, the executable needs to be run either as root via sudo or SUID (preferred)
[CRIT | am.system]          (using fallback implementation - you might experience permission errors on installer operations)
[CRIT | am.system] ERROR: This application manager build is not multi-process capable.

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By default appman builds in multi process mode and it seems that for ever reason you built yours in single process mode.
You can pass a config flag to make it build in multi process mode:
https://doc.qt.io/QtApplicationManag....html#building

I am working on an automotive infotainment system based on appman I am not an appman core developer but they are sitting in the next room ;-).
If you need answers about appman, I suggest you register to the Qt mailing lists, I know they (the appman developers) are subscribed, and the automotive list probably would be the best place for appman related questions.

I tried to configure the appman project in multi-process mode, but I am getting the following error:

Code:

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$ qmake -config force-multi-process 
Project ERROR: You forced multi-process mode, but the QtCompositor module is not available

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The appman docmentation also says that it needs QtWayland module to run in multi-process mode.

I have installed all the dependancies that I know of. I am using Qt v5.9.2 on Ubuntu 17.10 (64bit).

How can I make sure those modules are available on my Linux machine?

Quote:

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How can I make sure those modules are available on my Linux machine?

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You mean the ones you installed?
Try to install them again, your package manager will tell you if they are already present or not