[Interest] Unable to make deb file of Qt 5.5 app in Ubuntu 14.04

[Manoj Patidar]

Hi,

I have written shell script file as per below.

#!/bin/sh
export LD_LIBRARY_PATH=`pwd`/QT_LIBRARIES
export QT_PLUGIN_PATH=`pwd`/plugins
export QML2_IMPORT_PATH=`pwd`/qml
./MyApp

*QT_LIBRARIES -* I have put all the dependencies libraries (which I have 
found from ldd command) of MyApp into this folder.
*plugins - *I have copied whole plugins folder 
(/opt/Qt5.5.0/5.5/gcc_64/plugins) of QT 5.5 .
*qml -* I have copied whole qml folder (/opt/Qt5.5.0/5.5/gcc_64/qml) of 
QT 5.5.

Now I have created MyApp executable from cmake and make command by using 
CMakeLists.txt file. I have set QT path in Into CMakeLists.txt file as 
per below.

*set (CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} 
";/opt/Qt5.5.0/5.5/gcc_64/lib/cmake;")*

But still when I run the executable the I am getting "segmentation fault 
core dumped error" .

I am just guessing that I am getting segmentation fault issue because 
MyAPP taking reference of xcb plugin and it couldn't find or load xcb 
plugin properly.


Thanks,



On Friday 27 November 2015 06:01 PM, Igor Mironchik wrote:
> Hi,
>
> I guess that this is the same issue that I had already.
>
> This happens because Ubuntu uses QT_PLUGIN_PATH set in the system.
>
> Try to set this environment variable somewhere in the shell and 
> run/build you application.
>
> Something like this:
>
> export QT_PLUGIN_PATH=
>
> for example in bashrc and run you app from the shell...
>
> On 27.11.2015 13:59, Manoj Patidar wrote:
>>
>>
>> Hello,
>>
>> I just want to let you know that I am able to make deb file of Qt 
>> 5.2.1 app in Ubuntu 14.04 but unable to make deb file of Qt 5.5 app 
>> in Ubuntu 14.04 and got below errors.
>> |//usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5: undefined 
>> reference to `QPdfEnginePrivate::paperRect() const' 
>> //usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5: undefined 
>> reference to `QPdfEnginePrivate::pageRect() const' 
>> //usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5: undefined reference to 
>> `QFontEngine::glyphCache(void const*, QFontEngineGlyphCache::Type, 
>> QTransform const&) const' |
>>
>> I am just guessing that .so files present at the path 
>> |usr/lib/x86_64-linux-gnu/| are compatible with QT 5.2.1 but not with 
>> Qt5.5.
>>
>> There is no change in .so files at the path path 
>> |usr/lib/x86_64-linux-gnu/| if we install or uninstall Qt 5.2.1 or Qt 
>> 5.5.
>>
>> Can you please let me know where I am wrong ?
>>
>> Is it possible to make deb of QT 5.5 app into Ubuntu 14.04 ? If yes, 
>> then how ?
>>
>> One more thing, if I install the the same QT 5.5 app in Ubuntu 14.04 
>> using make install command then it copies all files at the right path 
>> as per the expectation. But when I tried to run the QT 5.5 executable 
>> then it gives me *"**segmentation**fault****core dump**ed **error"* ( 
>> but I am able to successfully run the same app into QT creator).
>>
>> One thing I noticed that if tried to make deb of higher than QT 5.2.1 
>> version in Ubuntu 14.04 then I am getting these same errors/issues.
>>
>> Please let me suggest so that I can resolve these issues.
>>
>>
>> Thanks  & Regards,
>> Manoj Patidar
>>
>>
>>
>>
>>
>> _______________________________________________
>> Interest mailing list
>> Interest at qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/interest
>
> -- 
> Best Regards,
> Igor Mironchik.
>
>
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