Libmono-native error, remote desktop manager, devolution

1

Hi, I am new to flatpak and tried to create a flatpak manifest for the “Remote Desktop Manager” software from Devolution.

It is a commercial software, and so I tried to create a copy/paste manifest from MS Visual Code manifest.
Manifest:

app-id: com.devolution.RDM
default-branch: stable
runtime: org.freedesktop.Sdk
runtime-version: '20.08'
sdk: org.freedesktop.Sdk
command: remotedesktopmanager
tags: [proprietary]
finish-args:
  - --require-version=0.10.3
  - --share=ipc
  - --socket=x11
  - --socket=pulseaudio
  - --socket=ssh-auth
  - --share=network
  - --device=all
  - --filesystem=host
  - --allow=devel
  - --talk-name=org.freedesktop.Notifications
  - --talk-name=org.freedesktop.secrets
  - --talk-name=org.freedesktop.Flatpak
  - --env=LD_LIBRARY_PATH=/app/usr/lib/devolutions/RemoteDesktopManager/
  - --filesystem=xdg-config/kdeglobals:ro
  - --talk-name=com.canonical.AppMenu.Registrar
  - --talk-name=com.canonical.AppMenu.Registrar.*
  - --system-talk-name=org.freedesktop.login1

sdk-extensions:
  - org.freedesktop.Sdk.Extension.mono6
  
modules:
  - name: rdm
    buildsystem: simple
    build-commands:
      - ar x RemoteDesktopManager.deb
      - tar xf data.tar.xz
      - mv usr/ /app/
      - rm -r control.tar.xz data.tar.xz debian-binary
      - install -D remotedesktopmanager /app/bin/remotedesktopmanager
    sources:
      - type: file
        url: https://cdn.devolutions.net/download/Linux/RDM/2020.3.1.0/RemoteDesktopManager_2020.3.1.0_amd64.deb
        dest-filename: RemoteDesktopManager.deb
        sha256: b2f9ea487f8822636d8a6118c4fb39816fdaebc46a4d53cf766b5baf1194c05b
        only-arches:
          - x86_64
      - type: file
        path: remotedesktopmanager

Start script:

cat remotedesktopmanager
#!/bin/bash
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/app/usr/lib/devolutions/RemoteDesktopManager/
cd /app/usr/lib/devolutions/RemoteDesktopManager/
./RemoteDesktopManager

I can build the software but when I try to start it I get the error: System.DllNotFoundException: libmono-native.so

image
image1495×265 102 KB

Now I am stucked, when I start the software without flatpak it is working. Within flatpak I get the libmono error. What can I do find the failure? I tried it with the debug shell and so on, but cannot figure out what the difference is.

Thanks, Br

2

You need to “install” things in the build steps with /usr/lib/sdk/mono6/install.sh

Example:

3

thanks for your reply. I found out that the mono library is included in the rdm-software. I made some trial and error runs and when I change the runtime from freedesktop to gnome and add the option --socket=session-bus, the software is running. It is strange that the runtime makes a difference.

app-id: com.devolution.RDM
default-branch: stable
runtime: org.gnome.Platform
runtime-version: '3.38'
sdk: org.gnome.Sdk
command: remotedesktopmanager
tags: [proprietary]
finish-args:
  - --share=ipc
  - --socket=x11
  - --socket=pulseaudio
  - --socket=ssh-auth
  - --socket=session-bus 
  - --share=network
  - --filesystem=host
  - --allow=devel
   
modules:
  - name: rdm
    buildsystem: simple
    build-commands:
      - ar x RemoteDesktopManager.deb
      - tar xf data.tar.xz
      - mv usr/ /app/
      - rm -r control.tar.xz data.tar.xz debian-binary
      - ls -la bin/remotedesktopmanager
      - install -D remotedesktopmanager /app/bin/remotedesktopmanager
    sources:
      - type: file
        url: https://cdn.devolutions.net/download/Linux/RDM/2020.3.1.0/RemoteDesktopManager_2020.3.1.0_amd64.deb
        dest-filename: RemoteDesktopManager.deb
        sha256: b2f9ea487f8822636d8a6118c4fb39816fdaebc46a4d53cf766b5baf1194c05b
        only-arches:
          - x86_64
      - type: file
        path: remotedesktopmanager