Installation and Deployment

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  Which version of Qt am I using? How do I find out?
  • JKSH  

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  UNSOLVED How to setup MySQL with MSVC in Qt?
  • Nima Ghorab  

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  UNSOLVED undefined reference to `qt_resourceFeatureZlib'
  • nshiell  

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  Hi, What kind of project ? What version of Qt ? How did you install it ?
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  UNSOLVED Cross compiling from WIN10 - X64 to PI3-IOT
  • deibiz1982  

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  Hi, I'm not sure if it fits for your system, but did you come across https://wiki.qt.io/Raspberry_Pi_Beginners_Guide and https://forum.qt.io/topic/68381/cross-compile-qt-windows-to-raspberry-3 ? BR Sebastian
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  SOLVED MaintenanceTool crashes
  • SeDi  

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  @JKSH, thanks! That is a good idea and I've tired (oh, what a funny typo, so true ;-)) tried that in many variations. After all, I did the (unnessecarily dreaded) reinstall. But that was not the end of the story... After renaming the whole Qt folder and reinstalling from scratch (at first: only a few parts of 5.13.1 MinGW64 checked) I ended up with 5.13.1 AND 5.12.4(!) in the (new!) folder. I don't have a clue where MaintenanceTool has its bookkeeping - it shouldn't have thought about 5.12.4 at all, the whole Qt folder was renamed! But that was actually a breakthrough, though, because now I could uncheck and remove this version (5.12.4) without errors, so that by now MaintenanceTool seems to actually believe, that it's gone. So the central question remains: where does MaintenanceTool store information about what's installed on a machine? This is puzzling. Just in case anybody might be able to shed some light on this, I'll leave this tread as "Unsolved" for some more time.
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  UNSOLVED QTCreator with android on linux
  • Gibbz  

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  Hi, You have to install a recent Qt build for Android.
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  SOLVED Deployment: Empty (Transparent) 3D Graphics Window with warning message - "QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled"
  • mConnolly82  

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  Add export QT_QPA_PLATFORM_PLUGIN_PATH=/pathtoQT/5.x.0/gcc_64/plugins to ~/.bashrc source ~/.bashrc This works for me.
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  SOLVED List of sdk downloads?
  • JeTSpice  

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  @jsulm Thanks.
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  UNSOLVED Need some help with "Qt unit test"
  • Halooh  

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  Hi @Halooh If i choose new project -> other project there is no opinion for qt unit test It was renamed to Auto Test project (at the same position) some time ago and let you choose the test framework in the wizard. Regards
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  UNSOLVED Windeployqt won't run, “Access is denied.”
  c++ msvc windeployqt qt 5.13.1 • • jkofskie  

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  Hi and welcome to devnet, What version of Windows are you using ? Can you run your application from the same command prompt ?
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  UNSOLVED CQtDeployer
  • hobbyProgrammer  

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  @hobbyProgrammer Hello I am the author of the QtDeployer utility. This utility was written specifically to solve the problems you are trying to solve. However, at the moment, the utility can create distributions only from the already created qt components. this means that you must: Prepare the qt framework assembly using a cross-platform compiler. Build your project using a cross-platform compiler with the qt framework created in the 1st step. Using cqtdeployer to collect all dependencies into one distribution. For the third step, only the cqtdeployer utility is suitable, because it is the only one that has its own ELF PE and QML parsers. In the process of developing my programs, I use a Linux-based server to create applications for Windows and Linux. You are not the first to try this way, so I’m thinking of writing an article on how to deploy applications on the same host for different platforms.
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  UNSOLVED Errors compiling for Tinkerboard
  • SteMMo  

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  UNSOLVED make[1]: *** [makefile:1624: obj/release/pcre_exec.o] Error 1
  • Sekhar  

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  @Sekhar Please take a look at https://doc.qt.io/qt-5/linux-deployment.html But your issue could be different: did you cross compile Qt with EGLFS support?
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  UNSOLVED duplicated folder on INSTALL on remote
  • comarius  

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  SOLVED creating widgets with fixed size and position
  • K-Str  

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  @K-Str said in creating widgets with fixed size and position: I think this is solved now. Please mark as solved
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  UNSOLVED downloading of QT installer block
  • Kafka  

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  Do you have an IT team that deals with your infrastructure ?
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  UNSOLVED error with android ndk: no compiler clang++
  • vudangkhoa2906  

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  @vudangkhoa2906 update your NDK, preferable to the newest stable version
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  UNSOLVED QtCreator Remote Debugging
  • srini_durand  

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  Became much to complicated, so I just put nfsserver on pi and mount / as sysroot. Way too many places to set solib-search-path" or "set sysroot"? just mounting the entire sd as an nfs mount to sysroot was a lot easier. On the display, the click check box and enter the DISPLAY did not work for me, I had to actually make an env value in Build Environment and place it there. DISPLAY localhost:10.0 there... It did not work for me in the run in terminal click to forward to this display... don't know if I am doing something wrong there or if this is bug.. but the correct place for me was in the Build Environment ...
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  SOLVED qmake for-loop gives empty variable from hand-typed list
  • Szymon. M. Sabat  

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  Hi and welcome to devnet, Your for line is wrong. It should be: for (CVLIB, CVLIBS) { # Your code here } qmake's syntax is not the same as C++. You have to have the opening bracket on the same line as the test/loop/etc..
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  SOLVED cannot install qt 5.5 from online installer
  • kamui  

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  @kamui don't forget to use the topic tools to set this topic to solved :)
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  UNSOLVED Deploying Qt app with sqlite database to android phone
  • kasmax99  

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  The problem is simple: you are trying to create the database in the same folder as your application. That won't work on mobile. It also won't work on desktop if you install the application in the system because usually they will be rightfully put in read-only places. You should use QStandardPaths to get a suitable folder for your application to write into.
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  UNSOLVED Error Building 5.13.1 Static due to qttools using g++ in mingw64
  • BK_Broiler  

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  @BK_Broiler If you don't need the tools then don't build them. Otherwise I guess you need to satisfy the requirements like CLang (QtCreator uses it for example).
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  SOLVED c: Command not found
  • Stan Huang  

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  @Adarsh_Kumar then please tell us more about your setup. which target? which toolchain did you install and where? have you setup Creator for cross compiling? what did you do? Regards
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  SOLVED QtQuick version 2.11 not installed.
  • Pistrix  

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  Looks like you're right. sudo apt list | grep qt5 revealed the qt5 version for the OS is 5.9.5, which would give QtQuick 2.9. I suspect there isn't a way to update the OS version without switching to Kubuntu. Thanks for your help!
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  UNSOLVED QT Setup error prevent download completion
  • Bob H AS  

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  UNSOLVED 5.12.5 Installation Error Using Maintenance Tool.
  maintenancetool qt 5.12.5 • • RRRitchey  

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  Thanks for the input. On WIndows, when you run the Maintenance Tool you check off which compiler you want to use. The Maintenance Tool downloads that compiler. At the point this error happens I have seen the Maintenance Tool download the correct compiler to the Qt directory.
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  UNSOLVED Mkspecs in CMake
  • EndrII 0  

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  SOLVED How to build qt 5.13.1 mysql 8.0 driver?
  • Gh0sTG0  

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  I don't know. Just installed all that things from mysql community server installer. That was really strange... I searched manually: deleted folder config.tests cleared files config.summary, config.opt, config.log, config.cache. Then I qmake include and lib from MYSQLSERVER8.0 folder... And that works... Now I'm connected with my mysql database...
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  UNSOLVED Qt5 with msdev2017 - Changing additional include directories breaks CL compiler
  • RBLL  

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  This topic is deleted!
  • hobbyProgrammer  

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  This topic is deleted!
  • harrryparker0123  

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  UNSOLVED WSL Qt Ubuntu?
  linux ubuntu wsl • • Dariusz  

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  @Dariusz said in WSL Qt Ubuntu?: how can I install Qt on Linux in shell? sudo apt install qt5-qmake Or use @benlau's excellent Qt silent installation scripts: https://github.com/benlau/qtci Or compile Qt yourself.
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  SOLVED Android build issues with OpenSSL on 5.0/5.1
  android pyqt openssl • • kviktor  

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  @mkre said in Android build issues with OpenSSL on 5.0/5.1: @sierdzio Is there a guide for either of these two solutions? Running into this issue now for an APK I'm trying to build for an Android 5.0/5.1 device that uses QNetworkRequest to download files from the internet. Option 2 (workaround) is described in the linkg @kviktor posted, just above your comment. As for compiling Qt statically, look in Qt docs and output of ./configure --help. Please remember license (LGPL, GPL) limitations when compiling statically.
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  UNSOLVED Windows 10 Qt5.13.1 QML Emulation Layer crashed
  • Vloois  

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  UNSOLVED SqlDatabase provides no drivers
  • Mark81  

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  Hi, The drivers are plugins so you need to also have the plugins deployed.
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  UNSOLVED Static Compile Qt 5.13.1 with OpenSSL 1.1.1d using MinGW (in Windows 10)
  qmake openssl compile compile-errors qt5.13 • • CybeX  

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  UNSOLVED Qt 5.13.1 for raspberry pi CM3: "#include<random>" build error
  • dxvx  

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  @dxvx said in Qt 5.13.1 for raspberry pi CM3: "#include<random>" build error: so I think that c++11 is activated... Is it true? Looks like it is, yes "how can activate c++11?" -c++std c++11
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  UNSOLVED QT installation failed on arm71
  • FRKhan  

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  Well, since you want to use your desktop environnement on your target. Just don't pass the embedded option when configuring Qt. You'll have a standard desktop Qt but built for ARM.
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  SOLVED Is really qtdeclarative mandatory?
  • Mark81  

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  Hi, No, it's not mandatory if not using any feature it provides. This will simply disable building the related parts of other modules.
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  UNSOLVED How could we detect users vcredist installed when using Qt Installer Framework
  • jiancaiyang  

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  You can add this to the Controller() function in your installer script: function Controller() { installer.setMessageBoxAutomaticAnswer("installationErrorWithRetry", QMessageBox.Ignore); installer.setMessageBoxAutomaticAnswer("installationError", QMessageBox.Ignore); } This will automatically click "ignore" on the message box that comes up when the Visual C++ redistributable is already installed. See the docs for more info.