Hi, This is a community driven forum. From the looks of these questions you should rather contact the Qt Company directly. In any case, you will have to rebuild Qt yourself as the pre-built binaries won't run on such a old system.

CMake insists on creating the build directory, and it is annoying that you have to delete build directories all over the place when all you want to do is take a quick look at some sources. So creator "builds" in a temporary directory to extract information from CMake -- till you actually trigger an explicit build from creator. At that point the actual build directory is created and all the files go there. You need to tell cmake to run your command in the source directory if those commands depend on being run from there: CMake usually does not build in the directory your sources are and will default to running stuff in the build directory.

@mit_cruze Unless I missed something, it's highly unlikely that building Qt 5.12.0 with the options you passed ended in installing it in /usr/local/Qt-5.7.1.

@p3c0 There may be some advanced method for doing this. But They have given sample-root-file-system and kernel source. This file system contains full ubuntu 14.04. And provided documents to compile kernel and flashing this file system to TX1 eMMC. I think mostly TX1 user use this board in Robotics, Machine learning and embedded visual computing applications. So they required full ubuntu. As for now i don't know any method to do that nor any post related on their forum. I will post a question on there forum. And hope for their reply soon.

Now I am not getting libqt5webchannel.so.5 missing error (which is dependency of qt webkit) in Ubuntu 16.04. Till now I was using Ubuntu 14.04 compatible debian/rule file in Ubuntu 16.04 machine during creating debian package. I just made changes in debian/rule file as per Ubuntu 16.04 and it works. But I did not know how to install qt5webchannel in Ubuntu 16.04.

If I may, don't call the destructors like that. When you want to "destroy" a heap allocated object call delete on it.

I don't think you can use /usr/bin/gdb to debug Android apps. Did you try to add the debugger manually?

I installed 5.4 instead of 5.5, and now it appears to be working :)

Hi and welcome to devnet, That post should get you started. Hope it helps

It looks like you're using the Ubuntu packaged Qt and not the one you installed using the installer. You should check the Kit in QtCreator you're using.

@mvuori yes i did check these solutions but i have no idea about these compiler directives. How do i use them in QtCreator. And it throws error for only one project and my other projects are working fine.

@Gualtix Hi and welcome to devnet, you are not following the current documented procedure.

I have opened the bug ticket https://bugreports.qt.io/browse/QTBUG-50460. Perhaps it is really a bug and will get fixed in the future ;D

Just a reminder: Qt 4.8.7 is that last release of the 4 series and unless there's security fixes to apply there will not be more releases. Also, the QtWebKit module has been deprecated in Qt 5.5 in favor of QtWebEngine so depending on what you want to build as application, take it into consideration.

Yes they do. The files you put in a qrc file are compiled in your project. Each file is translated to a text version so currently you are building a file that weights more than 12MB.

It's not just "yet another app" to learn. It's the current defacto version control system used by Qt, KDE, the linux kernel and many more projects. Even if you're the only developer, that's something you really want to learn to use.

@SGaist thank you so much.I solved problem by changing setup file

oops.. Sorry for the name. Actually I am developing my application for Ubuntu and right now no plan to port on other platform. But If I face any problem I will post here.. :D Thanks tomasz3dk :)

im using qt 5.9 on mac this piece of code worked like charm for me brew install mysql-connector-c

I stumbled upon this answer and added those links found in this this xml file: http://download.qt-project.org/online/qtsdkrepository/linux_x64/desktop/tools_maintenance http://download.qt-project.org/online/qtsdkrepository/linux_x64/root/qt Now I have repositories configured and everything is fine.

@aqing Hi and welcome to devnet, based on the answers: from the Linux distribution he was using for his target.

This page might be helpful http://derekmolloy.ie/beaglebone/qt-with-embedded-linux-on-the-beaglebone/

I have solved the issue using the following post: https://forum.qt.io/topic/49710/solved-first-steps-and-mysql/10

Looks good. Then, you should use gdb to debug your application

@Eyeless really sorry for the late reply! Just realised you have replied to me. After some testing I have solidified the conclusion that it is not a Qt problem, as was expected. As such, there is no reason to post my trivial dialog code. I am writing this for posterity's sake. This issue is caused due to the focus stealing prevention mechanism by Unity. The user could change Unity's default behaviour by issuing in a terminal the command: dconf write /org/compiz/profiles/unity/plugins/core/focus-prevention-level 0 This will allow for the consequent dialogs to appear in front of their parents, as expected.

Hi, It depends partly on what you use on your board, do you have a X server running ?

Thanks for replay, I will try this.

Can you share your pro file ?

@Jeff-Andle If you do not like that cleanup or if it is too hard to decide whether to free the memory you can use one oft these. QSharedData QSharedDataPointer QSharedPointer I have used QSharedDataPointer (but not the others so far), and it seems to work nice.

@lalvishnu12 Thanks. Let me know if you get any progress.

@mehrdad said: in publish process there is a part that ask licence file (list of numbers) first, what is the syntax of this file? That is an Ubuntu-specific requirement, so most users on this forum don't know the answer. maybe, i also ask this question in stackoverflow but i think i have better chance to find a qt programmer that published an app in software center. The Ubuntu SDK is built on on top of Qt, so most Ubuntu app publishers know Qt. Your best chance is to ask at http://askubuntu.com/ Good luck!

Hi and welcome to devnet, starting from Qt 5.1 QSerialPort is officially part of Qt: you don't need to build it anymore.