dlopen cannot load shared library

[James Henstridge]

On 3 February 2017 at 20:41, Loïc Minier <loic.minier at ubuntu.com> wrote:
> Hi,
>
> On Fri, Feb 3, 2017 at 11:20 AM, Roberto Mier Escandón 
> <roberto.escandon at canonical.com> wrote:
>>
>> I'm having a problem with a snap which start certain daemon when
>> installed. This daemon tries to load certain shared library but it's not
>> able to do it even in devmode [1]. However it loads it well in classic
>> mode. The library is in a rw path, provided directly to a dlopen method
>> [1]. Have anybody hit this kind of issue before?
>
>
> In classic mode, you see libraries from your classic Ubuntu system including
> X11; in devmode/confined mode, you only see system libraries from the core
> snap which doesn't contain X11.
>
> I suggest you embed X11 and other libs that your dlopen-ed library depends
> on.

Another alternative is to use the ubuntu-app-platform snap, as described here:

https://insights.ubuntu.com/2016/12/08/using-the-ubuntu-app-platform-content-interface-in-app-snaps/

Together with the desktop-launch script, this takes care of getting a
number of common desktop libraries to work under confinement.

James.