[Interest] Deploying QtWebEngine on Linux with Qt 5.6.0

[Mike Jackson]

Kai,
   I downloaded Qt 5.6.1 from the download.qt.io website.

   I wonder if something is getting relinked during packaging? The main 
application works ok so I don't think that is the problem. We use cpack 
for our packaging into a .tar.gz

Our package layout is this:

DREAM.3D
   |-bin
   |-- dream3d
   |-- qt.conf
   |-- QtWebEngineProcess
   |-- resources
   |-- translations
   |-lib
   |--libQt5Core.so.5

and our qt.conf file is this:
[Paths]
Plugins = ../Plugins
Prefix = .
LibraryExecutables = .
Data = .

-- 
Michael A. Jackson
BlueQuartz Software, LLC
[e]: mike.jackson at bluequartz.net


Kai Koehne wrote:
> Setting LD_LIBRARY_PATH is the ultima ratio, but shouldn't be needed here.
>
>
> I understand that you've been installing Qt 5.6.0 from the binary
> installer? Or did you configure/built it yourself?
>
>
> For the binary installer, QtWebEngineProcess should have a RUNPATH set
> to $ORIGIN/../lib:
>
>
> $ readelf --dynamic QtWebEngineProcess | grep PATH
> 0x000000000000001d (RUNPATH) Library runpath: [$ORIGIN/../lib]
>
> Check whether libQt5Core.so.5 is found there (should be
> /opt/DREAM3D_SDK/Qt5.6.0/5.6/gcc_64/lib for you)
>
> Regards
>
> Kai
>
> ------------------------------------------------------------------------
> *From:* Interest <interest-bounces+kai.koehne=qt.io at qt-project.org> on
> behalf of Thiago Macieira <thiago.macieira at intel.com>
> *Sent:* Saturday, June 25, 2016 2:17:59 AM
> *To:* interest at qt-project.org
> *Subject:* Re: [Interest] Deploying QtWebEngine on Linux with Qt 5.6.0
> On sexta-feira, 24 de junho de 2016 15:40:17 PDT Mike Jackson wrote:
>>  I am running Ubuntu 14.04 and Qt 5.6 downloaded from downloads.qt.io. I
>>  have built my application
>>  and the application runs but when I try to invoke the QWebEngine classes I
>>  just get an empty widget and the following error in the terminal:
>>Kai,

>>  /opt/DREAM3D_SDK/Qt5.6.0/5.6/gcc_64/libexec/QtWebEngineProcess: error
> while
>>  loading shared libraries: libQt5WebEngineCore.so.5: cannot open shared
>>  object file: No such file or directory
>>
>>  The same thing happens when I package my application. I have tried all
>>  sorts of ways of configuring the qt.conf directory, moving libs into other
>>  folders, renaming executables but nothing seems to work. Has anyone else
>>  run into a situation like this? Can anyone make recommendations on how to
>>  package QWebEngine?
>
> You need to set the LD_LIBRARY_PATH environment variable before your
> application is started. So replace your application with a shell script
> that
> sets the environment and then starts the application.
>
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
> Software Architect - Intel Open Source Technology Center
>
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