Installation and Deployment

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  Unsolved APPCRASH on app close
  • PavloPonomarov

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  Hi,

  The first thing to do would be to downgrade the graphics driver. The new version might have introduced a bug.

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  Unsolved Online installer immediately gives the error "Invalid data"
  • eamoc

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  Hi and welcome to devnet,

  Which links are broken ?

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  Unsolved module "QtQuick" version 2.11 is not installed
  • oltem4682

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  @sierdzio Would love the run that. But I have no idea how since, again, I have no experience (yet) with Qt or QML.
  Also yeah I've seen that page and if I have to believe that then it's a SDDM thing.

  I'll contact them, thanks.

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  Unsolved Hi, I am new for Qt, i am trying to display 0 to 999 in text Browser but when i am executing following code it is directly showing 999 output can anyone help me, thank you in advance
  qtcreator problem pogram • • Rameshwar

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  @Rameshwar

  @J-Hilk has given you the necessary code to start from. That's why people type in answers to questions. First try that and verify it works.

  Then change it so that it writes on your mainwindow or whatever you want instead.

  Only after that, write back if you can't get what you want working.

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  Unsolved DLL issue even with all Qt DLL in the directory
  dll deployment error • • Tapto

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  @Tapto said in DLL issue even with all Qt DLL in the directory:

  => But Qt 5.12.2 doesn't come with WinGW 32 bits.

  Yes it does. https://blog.qt.io/blog/2019/03/15/qt-5-12-2-released/

  => No it doesn't work in Qt Creator either. In Qt Creator, I only get a message "Application crashed". I get the error code only when launching the executable manually.

  The wiki page says, "This guide... assumes that... the release version of your app works correctly when you build + run it from Qt Creator".

  If it doesn't work in Qt Creator, then it won't work when you try to deploy it.

  As I said I am using 32bits external libs. Maybe the issue is with those libs. Could you give me a pointer on how to try to debug this?

  Create a small Hello World project using Qt only. Does this run correctly in Qt Creator? Create a small project that uses your external lib. Does this run correctly in Qt Creator?
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  Unsolved Qt5.12.2 regression with qwaylandxcompositeeglwindow.o linking
  • warpme

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  @SGaist
  Yes (but only briefly).
  Found nothing.
  Probably I fill regression report - but before I simply want to check with others....

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  Unsolved Qt 5.12.1 Cannot load library /opt/Qt/5.12.1/gcc_64/plugins/platforms/libqxcb.so: (libxkbcommon-x11.so.0: cannot open shared object file: No such file or directory)
  • plover

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  Hi and welcome to devnet,

  It's explained in the change log. However if you want to discuss about that. You should go to the development mailing list. You'll find there Qt's developers/maintainers. This is a user forum.

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  Unsolved How SPI(Serial peripheral interface ) Works in QT on Raspberry Pi B3+
  qt5 raspberry spi • • Andrex_Qt

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  Hi,

  Did you check that you have everything initialised properly ?

  You should run your application through the debugger. You can then get the stack trace and get clues from it on when it failed.

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  Unsolved cannot find -lGL at compil time
  • maxime62

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  @maxime62 glad you got it working. So please mark this topic as SOLVED now. Thanks

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  Unsolved Automatic Copy of Dependent Files in Qt Creator
  • aminemaar

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  @aminemaar hi,
  please be more specific, what files are you talkin about exactly ? are you trying to do a static build ?

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  Unsolved Error when deploying Qt Application
  • Vineela

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  When does this error show up? During compilation? Linking? Or when you try to run the executable?

  I think the issue is that Qt version installed in your system is different from one ThinClient is linked against. If you have your AppImage binary created already - run that instead of ThinClient file itself.

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  Unsolved Failed to create a Qt project in VS2017
  • weskerjiang

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  @SGaist
  I use qt-vsaddin-msvc2017-2.3.2.vsix,download from qt.io,and also i've tried download it from vs2017,both failed.

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  Unsolved Qt gui on beaglebone lcd 4.3 cape display not connected
  • tester21

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  Did you check whether you don't already have several backends at your disposal ?

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  Solved Qt Creator Ctrl + left click does nothing when using custom Kit...
  • emazed

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  Hi @aha_1980,
  that solved the problem. Thank you!!

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  Unsolved Trying to set up local repository
  • holoeye_dk

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  Unsolved installing qt5.6 on centos
  • atombear

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  In that case, I would rather go with the Qt online installer. This will allow you to choose which version of Qt to install.

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  Solved OpenVino Library integration cause unexpected crash onStart.
  • tpap

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  After restarting my PC the application run! It seems that the environment variables that I setup took place after system's reboot. I cannot figure out some other reason that cause that kind of error.

  @koahnig
  Appreciate your help mate!

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  Unsolved Best configuration and platform to compile most interoperable Linux Qt with good font rendering
  • Alexander Sbitnev

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  Hi,

  It's not a new dependency. It was bundled before. Now all minimal supported distributions provide that library hence it has been removed.

  As for your question, then you should build all the dependencies you want to control and bundle them with Qt.

  You will likely have to modify your custom version rpath to ensure they are found before the system versions.

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  Unsolved error C2027: use of undefined type 'QBufferPrivate'
  • QtAndMore

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  In the end I used command line to build the dll. Thanks for your help!

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  Solved Loading the meta information in maintenance tool takes ages
  • koahnig

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  I have problems with Maintenance tools since several weeks too. Everything downloads with 60-160 KiB speed, on 500 Mbps internet, both on Windows 10, and MacOs. Even if I remove Qt completely, and try to make fresh install.

  Metadata downloads without any problem though.

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  Unsolved qt maintenance tool not fetching the repositories
  • adrian_ion

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  I cannot see any repo listed in the maintenance tool when I check the Settings. There is any specific file on Windows where this tool saves the repo infomation?

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  Unsolved Is there a way to manually update Maintenance Tool 3.0.2 ?
  install maintenance tool qt 5.11 • • tkiprime

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  @gregorburger Yes, we had such an issue last week, I hope it will work soon.

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  Solved QtCreator complains that "Android SDK is missing necessary packages," does nothing.
  • Stokestack

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  Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum users may know a solution has been found :)

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  Unsolved Maintanance Tool won't show new packages
  • tungsteno

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  @tungsteno

  Sounds a bit like it is not solved or not completely solved. See here https://forum.qt.io/topic/100237/loading-the-meta-information-in-maintenance-tool-takes-ages

  Out of curiosity I have started the maintenance tool. Also here it takes ages again to download meta information. At some stage it seems to stop loading the meta info and jumps to the overview where only already instaqlled libraries are shown.

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  Solved Build dll qt 5.6.3 with "/INTEGRITYCHECK" option
  • nguyenphongmmo

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  Thanks !

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  Unsolved Qt Linux deployment
  • PouryaTorabi

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  The error message comes with a link to https://github.com/probonopd/linuxdeployqt/issues/340 where you get the full explanation about the message.

  It also talks about the -unsupported-allow-new-glibc option.

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  Unsolved Intel OpenVino on Linux
  • Sdra81

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  Hi,

  I can confirm this one with the R4 release of OpenVino, QT 5.7 under Ubuntu 16.04.
  The location and the size of the detected faces are corrupted. This bug occurs either on CPU or NCS/MYRIAD target.

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  Unsolved download qt is slow from Prague(Czech Republic)
  • miskol

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  @sierdzio said in download qt is slow from Prague(Czech Republic):
  I think picking other mirrors is possible in online installer, too, but I can't find proper links for that now.

  nothing precompiled afaik, but here's the git repo from @JKSH
  https://github.com/JKSH/QtSdkRepoChooser

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  Solved error: Cannot run compiler 'g++'. Output:
  • ashajg

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  hi guys finally I got success in installing Qt on my PC
  Just created new folder and installed all versions of MinGW from Developer and Designer Tools and its working now.. Thanks for help :)

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  Unsolved Build Qt from source with dev packages
  • Daniel Placencia

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  Hi and welcome to devnet,

  What version of Qt are you trying to build ?
  Why do you want to build Qt yourself ?
  What platform are you running ?

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  Unsolved Building pyside2 on Windows 10 VS2017
  • dhabbyc

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  Did you make any progress with this? I think I've got a similar issue.

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  Unsolved First time installing, 5.12.1 + MinGW7.30-64, compile error
  • VietThan

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  @VietThan Yes. First is the Qt version (in this case Qt 5.12.1 built using Min GW 7.3.0 64 compiler), second one (in Tools) is the compiler itself. You always have to use same compiler which was used to build Qt. The reason is that different C++ compilers are not compatible with each other.

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  Unsolved Problem cross compiling Qt 5.12.1 on Windows for ARM v7 Cortex A9
  • Alexander Bauer

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  Unsolved Developing an interface, built for Windows XP
  • oxidium

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  Hi everyone and thank you all for investigating this issue.

  @SGaist We managed to find a Visual Studio 6 installation to run and compile on the WinXP machine. We found out that in the SDK, there was some VC++ 6 files, like *dsw. It actually does compile simple examples from the SDK. Of course, we need to understand how the whole library works.
  However, I do not know how to check about the MinGW compiler. I was told it could work and I am currently downloading qt-opensource-windows-x86-mingw492-5.5.1.exe

  @mrjj There are a lot of libraries available in the SDK. When we try to use a command to open the camera, we get an error like Dll access violation. Choosing a compiler is not something we are familiar to! I personnally code small interfaces with Visual Studio 2017 with Qt 5.6 and it is very fun. But going back more than 10 years, I feel like I missed something.

  @KroMignon Well that is what I wanted to know: How to build from sources?

  @Pablo-J-Rogina Our supervisor is not willing to test it on another machine. It is his only camera with no spare and he does not want to try, as the IT tech told him.

  We are thinking of doing a small local network in order to share the image to another machine, with proper tools to develop a more up-to-date application.

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  Unsolved Installation of Qt 4.8.7 in Ubuntu 18.04.1 LTS
  • die Dauphin

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  Hi and welcome to devnet,

  You don't need to do that. Your distribution already provides Qt 4.8.7. You should use that one as it will have proper OpenSSL support directly.

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  Unsolved Qt Installer non-interactive generic deselectComponent
  • Gluttony

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  Solved Building from source, yet still no QtWebEngine
  • JonathanA

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  Okay, I did find an error in the config.log:

  > C:\qt-everywhere-src-5.12.1\qtwebengine\config.tests\winversion\winversion.cpp(30): fatal error C1189: #error: unsupported Visual Studio version > jom: C:\qt-build-lib\config.tests\winversion\Makefile [winversion.obj] Error 2 test config.qtwebengine_core.tests.webengine-winversion FAILED

  It seems odd this didn't show up in the config summary:

  Build type: win32-msvc (i386, CPU features: sse sse2) Compiler: msvc 191627027 Configuration: sse2 aesni sse3 ssse3 sse4_1 sse4_2 avx avx2 avx512f avx512bw avx512cd avx512dq avx512er avx512ifma avx512pf avx512vbmi avx512vl compile_examples f16c largefile precompile_header rdrnd shani x86SimdAlways shared debug_and_release release debug build_all c++11 c++14 c++1z concurrent dbus no-pkg-config release_tools stl Build options: Mode ................................... debug and release; default link: debug; optimized tools Optimize release build for size ........ no Building shared libraries .............. yes Using C standard ....................... C89 Using C++ standard ..................... C++1z Using gold linker ...................... no Using precompiled headers .............. yes Using LTCG ............................. no Target compiler supports: SSE .................................. SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX .................................. AVX AVX2 AVX512 ............................... F ER CD PF DQ BW VL IFMA VBMI Other x86 ............................ AES F16C RDRAND SHA Build parts ............................ libs tools App store compliance ................... no Qt modules and options: Qt Concurrent .......................... yes Qt D-Bus ............................... yes Qt D-Bus directly linked to libdbus .... no Qt Gui ................................. yes Qt Network ............................. yes Qt Sql ................................. yes Qt Testlib ............................. yes Qt Widgets ............................. yes Qt Xml ................................. yes Support enabled for: Using pkg-config ....................... no udev ................................... no Using system zlib ...................... no Qt Core: DoubleConversion ....................... yes Using system DoubleConversion ........ no GLib ................................... no iconv .................................. no ICU .................................... no Tracing backend ........................ <none> Logging backends: journald ............................. no syslog ............................... no slog2 ................................ no Using system PCRE2 ..................... no Qt Network: getifaddrs() ........................... no IPv6 ifname ............................ no libproxy ............................... no OpenSSL ................................ no Qt directly linked to OpenSSL ........ no OpenSSL 1.1 ............................ no DTLS ................................... no SCTP ................................... no Use system proxies ..................... yes Qt Gui: Accessibility .......................... yes FreeType ............................... yes Using system FreeType ................ no HarfBuzz ............................... yes Using system HarfBuzz ................ no Fontconfig ............................. no Image formats: GIF .................................. yes ICO .................................. yes JPEG ................................. yes Using system libjpeg ............... no PNG .................................. yes Using system libpng ................ no EGL .................................... yes OpenVG ................................. no OpenGL: ANGLE ................................ yes Combined ANGLE Library ............... no Desktop OpenGL ....................... no Dynamic OpenGL ....................... yes OpenGL ES 2.0 ........................ no OpenGL ES 3.0 ........................ no OpenGL ES 3.1 ........................ no OpenGL ES 3.2 ........................ no Vulkan ................................. no Session Management ..................... yes Features used by QPA backends: evdev .................................. no libinput ............................... no INTEGRITY HID .......................... no mtdev .................................. no tslib .................................. no xkbcommon .............................. no X11 specific: XLib ................................. no EGL on X11 ........................... no QPA backends: DirectFB ............................... no EGLFS .................................. no LinuxFB ................................ no VNC .................................... no Mir client ............................. no Windows: Direct 2D ............................ yes DirectWrite .......................... yes DirectWrite 2 ........................ yes Qt Sql: SQL item models ........................ yes Qt Widgets: GTK+ ................................... no Styles ................................. Fusion Windows WindowsVista Qt PrintSupport: CUPS ................................... no Qt Sql Drivers: DB2 (IBM) .............................. no InterBase .............................. no MySql .................................. no OCI (Oracle) ........................... no ODBC ................................... yes PostgreSQL ............................. no SQLite2 ................................ no SQLite ................................. yes Using system provided SQLite ......... no TDS (Sybase) ........................... no Qt Testlib: Tester for item models ................. yes Qt SerialBus: Socket CAN ............................. no Socket CAN FD .......................... no Qt QML: QML network support .................... yes QML debugging and profiling support .... yes QML sequence object .................... yes QML list model ......................... yes QML XML http request ................... yes QML Locale ............................. yes QML delegate model ..................... yes Qt Quick: Direct3D 12 ............................ yes AnimatedImage item ..................... yes Canvas item ............................ yes Support for Qt Quick Designer .......... yes Flipable item .......................... yes GridView item .......................... yes ListView item .......................... yes TableView item ......................... yes Path support ........................... yes PathView item .......................... yes Positioner items ....................... yes Repeater item .......................... yes ShaderEffect item ...................... yes Sprite item ............................ yes Qt Scxml: ECMAScript data model for QtScxml ...... yes Qt Bluetooth: BlueZ .................................. no BlueZ Low Energy ....................... no Linux Crypto API ....................... no WinRT Bluetooth API (desktop & UWP) .... yes Qt Sensors: sensorfw ............................... no Qt Positioning: Gypsy GPS Daemon ....................... no WinRT Geolocation API .................. yes Qt Location: Qt.labs.location experimental QML plugin . yes Geoservice plugins: OpenStreetMap ........................ yes HERE ................................. yes Esri ................................. yes Mapbox ............................... yes MapboxGL ............................. no Itemsoverlay ......................... yes QtXmlPatterns: XML schema support ..................... yes Qt Multimedia: ALSA ................................... no GStreamer 1.0 .......................... no GStreamer 0.10 ......................... no Video for Linux ........................ no OpenAL ................................. no PulseAudio ............................. no Resource Policy (libresourceqt5) ....... no Windows Audio Services ................. yes DirectShow ............................. yes Windows Media Foundation ............... yes Media player backend ................... DirectShow Qt Tools: QDoc ................................... no Qt WebEngine: Embedded build ......................... no Pepper Plugins ......................... yes Printing and PDF ....................... yes Proprietary Codecs ..................... no Spellchecker ........................... yes Native Spellchecker .................... no WebRTC ................................. yes Use System Ninja ....................... no Geolocation ............................ yes WebChannel support ..................... yes Use v8 snapshot ........................ yes Kerberos Authentication ................ yes

  I think the bit about "Embedded build: no" just means it isn't building for an embedded Linux, not for a WebEngine to embed in an app. I updated my MSVC 2017 with the latest service packs and it seems like it is working now. So it is probably a configuration bug that it doesn't report WebEngine won't be built.

  Just an FYI for anyone else who wants to try this Herculean task - we got a 16 core, 32bg Amazon Instance (a c5 4xlarge) and the build, using this config line:

  %_ROOT%\configure -prefix %_ROOT%\..\5.12.1-32-release -nomake examples -nomake tests -skip qtandroidextras -skip qtgamepad -skip qtmacextras -skip qtquickcontrols -skip qt3d -skip qtcanvas3d -skip qtx11extras -skip qtactiveqt -skip qtcharts -skip qtdatavis3d -skip qtpurchasing -skip qtquickcontrols2 -skip qtvirtualkeyboard -skip qtwayland -opensource -opengl dynamic -confirm-license -make-tool jom

  So you see, I'm not building a bunch of pieces that we don't use.

  This took 20 minutes without WebEngine and 120 minutes with WebEngine. On my older dual 3ghz Xeon machine, the one sans WebEngine took 5 hours. I'll let you do the math for how long it would probably take with it. And this is using jom!

  Thanks again to SGaist for all your help!

  Jonathan

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  Solved windeployqt 5.12.1 is not copying dlls
  • SourabhKus

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  CALL C:\Qt\Qt5.12.1\5.12.1\msvc2017_64\bin\windeployqt.exe MyApp.exe --qmldir "D:\MyApp\Application\Qml" is working fine

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  Solved Building Qt 5.12.1 on Windows has install problems
  source building qt • • JonathanA

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  Okay, I think the problem here is that I was doing 'jom release' when I built it and that just doesn't seem to work. If I just do 'jom', it seems to work fine.

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  Solved Specify macos target build under qtCreator
  • bopieds

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  hi,

  thanks for the heads up
  so i ended up retrieving the old macbook and installed Qt build the app on it.

  thanks