[SailfishDevel] Lipstick not launching app

[Slava Monich]

Just so you know, boosters may have to go because of this change in glibc:

    https://sourceware.org/bugzilla/show_bug.cgi?id=24323

It has been reverted in Sailfish OS:

https://git.sailfishos.org/mer-core/glibc/commit/df05690

but at some point boosters may get replaced with simple fork() wrappers. 
They should still start your app, though.

Cheers,
-Slava

> I think the qt5 booster is a no-op, but im sure someone with more
> knowledge can correct me.  The regular booster will try and load the
> app as a shared library so it will need to be compiled a certain way.
> Depends how your app is written.  Anything based on the sdk templates
> should be fine.
>
> On Tue, 14 Apr 2020 at 12:19, Julien Blanc <julien.blanc at tgcm.eu> wrote:
>> Le mardi 14 avril 2020 à 11:27 +0100, Adam Pigg a écrit :
>>> Have you tried using invoker to launch it?
>> [nemo at Sailfish ~]$ invoker --type silica-qt5 harbour-kontroller
>> invoker: Invoking execution: '/usr/bin/harbour-kontroller'
>> invoker: error: Can't send signal 11 to application [24388]: No such
>> process
>> Segmentation fault
>>
>> [nemo at Sailfish ~]$ invoker --type qt5 harbour-kontroller
>> invoker: Invoking execution: '/usr/bin/harbour-kontroller'
>>
>> --> app launches correctly.
>>
>> So that’s indeed a difference, and i can fix the .desktop file
>> accordingly. Thanks for the tip.
>>
>> But what is the difference between silica-qt5 and qt5 ? Why would it
>> cause an app crash ?
>>
>> Regards,
>>
>> Julien
>>
>>> On Tue, 14 Apr 2020 at 11:18, Julien Blanc <julien.blanc at tgcm.eu>
>>> wrote:
>>>> Finally found something relevant in the logs :
>>>>
>>>> Apr 14 12:15:42 Sailfish mapplauncherd[5363]: Boosted process
>>>> (pid=16324) was terminated due to signal 11
>>>>
>>>> So apparently, my app segfaults, but only when launched from
>>>> applauncherd. This is somewhat good news. I can start to track the
>>>> issue adding some debug traces.
>>>>
>>>> I'm still puzzled as what's the difference between launching from
>>>> lipstick and from a terminal.
>>>>
>>>> Regards,
>>>>
>>>> Julien
>>>>
>>>> Le mardi 14 avril 2020 à 07:35 +0200, Julien Blanc a écrit :
>>>>> There it is :
>>>>>
>>>>> [Desktop Entry]
>>>>> Type=Application
>>>>> X-Nemo-Application-Type=silica-qt5
>>>>> Icon=harbour-kontroller
>>>>> Exec=harbour-kontroller
>>>>> Name=Kontroller
>>>>> # translation example:
>>>>> # your app name in German locale (de)
>>>>> #
>>>>> # Remember to comment out the following line, if you do not want
>>>>> to
>>>>> use
>>>>> # a different app name in German locale (de).
>>>>> #Name[de]=kontroller
>>>>>
>>>>>
>>>>> The whole source code is available here:
>>>>>
>>>>> https://github.com/Julien-Blanc-tgcm/kontroller
>>>>>
>>>>> I changed a lot of things from v0.6, so tracking which particular
>>>>> change triggers the problem is not an easy task. I’d rather have
>>>>> a
>>>>> way
>>>>> to get more traces from lipstick than reverting every single
>>>>> change i
>>>>> made.
>>>>>
>>>>> THanks for your help,
>>>>>
>>>>> Regards,
>>>>>
>>>>> Julien
>>>>>
>>>>> Le lundi 13 avril 2020 à 19:57 +0300, Андрей Кожевников a écrit :
>>>>>> Hello. You're right. Show us your .desktop file to judge
>>>>>>
>>>>>> пн, 13 апр. 2020 г. в 19:12, Julien Blanc <julien.blanc at tgcm.eu
>>>>>>> :
>>>>>>> Hi,
>>>>>>>
>>>>>>> I’m running into a pretty annoying issue with lipstick not
>>>>>>> launching
>>>>>>> the application i develop anymore (occurs with 3.3, but
>>>>>>> occurs
>>>>>>> after i
>>>>>>> made some changes which should not be relevant).
>>>>>>>
>>>>>>> The application launch fine from a terminal, launch fine from
>>>>>>> the
>>>>>>> sdk,
>>>>>>> but launching it from lipstick, it never gets launched and
>>>>>>> the
>>>>>>> process
>>>>>>> does not show up when running top/ps & co.
>>>>>>>
>>>>>>> This seems like there could be something wrong with my
>>>>>>> .desktop
>>>>>>> file,
>>>>>>> but it didn't change between version 0.6 which was working
>>>>>>> fine
>>>>>>> with
>>>>>>> 3.3 and the dev version, which is not (i could not test dev
>>>>>>> version
>>>>>>> with 3.2 yet).
>>>>>>>
>>>>>>> journalctl does not show anything. There must be something
>>>>>>> wrong
>>>>>>> with
>>>>>>> my app, since it is the only one showing this behaviour (and
>>>>>>> it
>>>>>>> didn't
>>>>>>> before), but i'm puzzled as how to debug this. Any pointer
>>>>>>> would
>>>>>>> be
>>>>>>> greatly appreciated.
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>> Julien
>>>>>>>
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