<![CDATA[QT installation failed on arm71]]>I am working on board on which linux installed having arm71 architecture , I tried to install QT(qt-opensource-linux-x64-5.13.0.run) but I got the error "cannot execute binary file: Exec format error’" .Although arm71 is 32 bit architecture but I couldn't find Qt opensource for linux x32 bit .I need to install QT ? any help ?

]]>https://forum.qt.io/topic/106018/qt-installation-failed-on-arm71RSS for NodeMon, 07 Sep 2026 06:07:03 GMTMon, 19 Aug 2019 03:41:27 GMT60<![CDATA[Reply to QT installation failed on arm71 on Tue, 01 Oct 2019 18:11:29 GMT]]>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.

]]>https://forum.qt.io/post/553841https://forum.qt.io/post/553841Tue, 01 Oct 2019 18:11:29 GMT<![CDATA[Reply to QT installation failed on arm71 on Tue, 01 Oct 2019 17:51:48 GMT]]>@SGaist I have not figured out what version is suitable for me. I'm beginner in QT. I had no idea about this window manager thing. Can you please guide me. Any useful material or link?

]]>https://forum.qt.io/post/553840https://forum.qt.io/post/553840Tue, 01 Oct 2019 17:51:48 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 30 Sep 2019 19:24:33 GMT]]>Then why are you using a Qt version built for embedded without window manager ?

]]>https://forum.qt.io/post/553671https://forum.qt.io/post/553671Mon, 30 Sep 2019 19:24:33 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 30 Sep 2019 10:43:30 GMT]]>@SGaist
yes. My target is Picozed SDR board which is running Xubuntu with HDMI display. It has Xfce desktop environment. We can install other tools as well. It has most of the desktop environment available.

]]>https://forum.qt.io/post/553583https://forum.qt.io/post/553583Mon, 30 Sep 2019 10:43:30 GMT<![CDATA[Reply to QT installation failed on arm71 on Fri, 27 Sep 2019 18:26:48 GMT]]>Do you have a window manager on your target ?

]]>https://forum.qt.io/post/553308https://forum.qt.io/post/553308Fri, 27 Sep 2019 18:26:48 GMT<![CDATA[Reply to QT installation failed on arm71 on Fri, 27 Sep 2019 03:37:12 GMT]]>@SGaist Thank you

@SGaist said in QT installation failed on arm71:

The virtual framebuffer is a tool that allows you to visualise your application the way it would be on your target without the need to have it available.

Ok. than what is the best way to deploy the application. My target board is running XUnuntu. When i deploy my application, it appears in destined folder when does not run until i go to console terminal. I have to do (CNTRL+ALT+F1) and run ./app -qws.

what i want is, when i double click on my application executable, it should launch. Like built-in calculator. When i click on calculator icon, it's window appears. is it possible for qt application?

]]>https://forum.qt.io/post/553115https://forum.qt.io/post/553115Fri, 27 Sep 2019 03:37:12 GMT<![CDATA[Reply to QT installation failed on arm71 on Thu, 26 Sep 2019 19:51:25 GMT]]>If you are building with your host kit then it's going to use your host infrastructure. Likely the XCB backend.

The virtual framebuffer is a tool that allows you to visualise your application the way it would be on your target without the need to have it available.

]]>https://forum.qt.io/post/553087https://forum.qt.io/post/553087Thu, 26 Sep 2019 19:51:25 GMT<![CDATA[Reply to QT installation failed on arm71 on Thu, 26 Sep 2019 06:16:27 GMT]]>Thank you guys for your time.

@Pablo-J-Rogina said in QT installation failed on arm71:

If there's no typo, something is not matching since ldd is showing Qt libraries are taken from another folder: /usr/local/Qt-4.8.7-arm/lib so it seems you have another installation of Qt in your device...

yes that was typo. It is /usr/local/Qt-4.8.7-arm

@SGaist said in QT installation failed on arm71:

One thing to do: copy the Qt installation folder in the exact same subdirectory on your target than on your desktop machine.

I did it. deployed application but nothing appeared. not even any error. I found this thread. I open console terminal (CNTRL+ALT+F1) and my application executed successfully. I did not enabled virtual frame buffer or vnc while configuring qt sources.

Although i somehow executed application on my target but i didn't understand one thing. How qt application executes on host system when compiled using host kit? i mean why that doesn't depends upon virtual framebuffer on vnc?
Secondly, Qt virtual buffer documentation says we should not use it on release application but on debug applications only. If this is true the what is the most optimized approach to deploy the qt application on production release?

]]>https://forum.qt.io/post/552926https://forum.qt.io/post/552926Thu, 26 Sep 2019 06:16:27 GMT<![CDATA[Reply to QT installation failed on arm71 on Wed, 25 Sep 2019 17:49:45 GMT]]>One thing to do: copy the Qt installation folder in the exact same subdirectory on your target than on your desktop machine.

]]>https://forum.qt.io/post/552859https://forum.qt.io/post/552859Wed, 25 Sep 2019 17:49:45 GMT<![CDATA[Reply to QT installation failed on arm71 on Wed, 25 Sep 2019 17:40:03 GMT]]>@FRKhan said in QT installation failed on arm71:

in my target at /usr/local/qt-arm

If there's no typo, something is not matching since ldd is showing Qt libraries are taken from another folder: /usr/local/Qt-4.8.7-arm/lib so it seems you have another installation of Qt in your device...

]]>https://forum.qt.io/post/552858https://forum.qt.io/post/552858Wed, 25 Sep 2019 17:40:03 GMT<![CDATA[Reply to QT installation failed on arm71 on Wed, 25 Sep 2019 04:02:06 GMT]]>@SGaist

@SGaist said in QT installation failed on arm71:

Did you run ldd on your target ?

Yes. here is the output

analog@analog:~$ ldd NewProj
libQtGui.so.4 => /usr/local/Qt-4.8.7-arm/lib/libQtGui.so.4 (0xb682d000)
libQtNetwork.so.4 => /usr/local/Qt-4.8.7-arm/lib/libQtNetwork.so.4 (0xb6773000)
libQtCore.so.4 => /usr/local/Qt-4.8.7-arm/lib/libQtCore.so.4 (0xb64ea000)
libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0xb64b2000)
libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0xb6407000)
libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0xb639b000)
libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0xb6379000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6292000)
libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6287000)
librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0xb6279000)
/lib/ld-linux-armhf.so.3 (0x7f5d1000)

@SGaist said in QT installation failed on arm71:

In any case, did you install your cross-compiler Qt on your target ?

I cross compiled Qt4.8.7 and installed in /usr/local/qt on my host PC. I then copied the /usr/local/qt folder in my target at /usr/local/qt-arm

]]>https://forum.qt.io/post/552743https://forum.qt.io/post/552743Wed, 25 Sep 2019 04:02:06 GMT<![CDATA[Reply to QT installation failed on arm71 on Tue, 24 Sep 2019 18:51:37 GMT]]>Did you run ldd on your target ?
In any case, did you install your cross-compiler Qt on your target ?

]]>https://forum.qt.io/post/552699https://forum.qt.io/post/552699Tue, 24 Sep 2019 18:51:37 GMT<![CDATA[Reply to QT installation failed on arm71 on Tue, 24 Sep 2019 13:45:02 GMT]]>@SGaist here is the output og ldd <myexe>

libQtGui.so.4 => /usr/local/Qt-4.8.7-arm/lib/libQtGui.so.4 (0xb682d000)
	libQtNetwork.so.4 => /usr/local/Qt-4.8.7-arm/lib/libQtNetwork.so.4 (0xb6773000)
	libQtCore.so.4 => /usr/local/Qt-4.8.7-arm/lib/libQtCore.so.4 (0xb64ea000)
	libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0xb64b2000)
	libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0xb6407000)
	libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0xb639b000)
	libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0xb6379000)
	libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6292000)
	libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6287000)
	librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0xb6279000)
	/lib/ld-linux-armhf.so.3 (0x7f5d1000)

besides this, I have tried a few approaches. I used my cross-compiler and root file system running on SD card.
https://medium.com/@amirmann/how-to-cross-compile-qt-for-raspberry-pi-3-on-linux-ubuntu-for-beginners-75acf2a078c
this removed the undefined symbol error but gives this error when i ran my exe on target board

./myexe
QWSSocket::connectToLocalFile could not connect:: No such file or directory
QWSSocket::connectToLocalFile could not connect:: No such file or directory
QWSSocket::connectToLocalFile could not connect:: No such file or directory
QWSSocket::connectToLocalFile could not connect:: No such file or directory
QWSSocket::connectToLocalFile could not connect:: No such file or directory
QWSSocket::connectToLocalFile could not connect:: No such file or directory
No Qt for Embedded Linux server appears to be running.

If you want to run this program as a server,
add the "-qws" command-line option.

./myexe -qws
Qt for Embedded Linux data directory is not owned by user 0: /tmpqtembedded-0 aborted

here is some other information of my target system that can be relevant

apt-cache policy libqt4-declarative
  Installed: 4:4.8.5-dfsg-5ubuntu2
  Candidate: 4:4.8.5-dfsg-5ubuntu2


ran on target
strings /usr/lib/arm-linux-gnueabihf/libQtDeclarative.so.4 | egrep 'qwsEvent|x11Event'
_ZN7QWidget8**x11**EventEP7_XEvent

athar@athar-HP-Z420-Workstation:/usr/local/Qt-4.8.7-arm/lib$ strings libQtDeclarative.so.4 | egrep 'qwsEvent|x11Event'
_ZN7QWidget8**qws**EventEP8QWSEvent

file myexe
myexe: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-, for GNU/Linux 3.1.1, BuildID[sha1]=e473e432126aa63423a95cbfcce7dec29632255a, not stripped

root@athar-HP-Z420-Workstation:/usr/local# egrep -r qwsEvent Qt-4.8.7-arm/*
Binary file Qt-4.8.7-arm/demos/composition/composition matches
Binary file Qt-4.8.7-arm/demos/mainwindow/mainwindow matches
Binary file Qt-4.8.7-arm/demos/embeddeddialogs/embeddeddialogs matches
Binary file Qt-4.8.7-arm/demos/textedit/textedit matches
Binary file Qt-4.8.7-arm/demos/deform/deform matches
Binary file Qt-4.8.7-arm/demos/books/books matches
Binary file Qt-4.8.7-arm/demos/gradients/gradients matches
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Binary file Qt-4.8.7-arm/demos/embedded/flickable/flickable matches
Binary file Qt-4.8.7-arm/demos/embedded/anomaly/anomaly matches
Binary file Qt-4.8.7-arm/demos/embedded/raycasting/raycasting matches
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Binary file Qt-4.8.7-arm/demos/embedded/weatherinfo/weatherinfo matches
Binary file Qt-4.8.7-arm/demos/embedded/digiflip/digiflip matches
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Binary file Qt-4.8.7-arm/examples/uitools/multipleinheritance/multipleinheritance matches
Binary file Qt-4.8.7-arm/examples/linguist/arrowpad/arrowpad matches
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Binary file Qt-4.8.7-arm/examples/tools/treemodelcompleter/treemodelcompleter matches
Binary file Qt-4.8.7-arm/examples/tools/inputpanel/inputpanel matches
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Binary file Qt-4.8.7-arm/examples/declarative/positioners/positioners matches
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Binary file Qt-4.8.7-arm/examples/declarative/ui-components/scrollbar/scrollbar matches
Binary file Qt-4.8.7-arm/examples/declarative/ui-components/tabwidget/tabwidget matches
Binary file Qt-4.8.7-arm/examples/declarative/ui-components/slideswitch/slideswitch matches
Binary file Qt-4.8.7-arm/examples/declarative/ui-components/progressbar/progressbar matches
Binary file Qt-4.8.7-arm/examples/declarative/touchinteraction/pincharea/pincharea matches
Binary file Qt-4.8.7-arm/examples/declarative/touchinteraction/mousearea/mousearea-example/mouseareaexample matches
Binary file Qt-4.8.7-arm/examples/declarative/touchinteraction/gestures/experimental-gestures/experimentalgestures matches
Binary file Qt-4.8.7-arm/examples/declarative/sqllocalstorage/sqllocalstorage matches
Binary file Qt-4.8.7-arm/examples/declarative/animation/basics/property-animation/property-animation matches
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Binary file Qt-4.8.7-arm/examples/declarative/modelviews/visualitemmodel/visualitemmodel matches
Binary file Qt-4.8.7-arm/examples/declarative/modelviews/pathview-example/pathview matches
Binary file Qt-4.8.7-arm/examples/declarative/modelviews/package/package matches
Binary file Qt-4.8.7-arm/examples/declarative/threading/workerscript/workerscript matches
Binary file Qt-4.8.7-arm/examples/declarative/threading/threadedlistmodel/threadedlistmodel matches
Binary file Qt-4.8.7-arm/examples/declarative/keyinteraction/focus/focus matches
Binary file Qt-4.8.7-arm/examples/declarative/toys/dynamicscene/dynamicscene matches
Binary file Qt-4.8.7-arm/examples/declarative/toys/tic-tac-toe/tic-tac-toe matches
Binary file Qt-4.8.7-arm/examples/declarative/toys/clocks/clocks matches
Binary file Qt-4.8.7-arm/examples/declarative/toys/corkboards/corkboards matches
Binary file Qt-4.8.7-arm/examples/declarative/toys/tvtennis/tvtennis matches
Binary file Qt-4.8.7-arm/examples/declarative/text/fonts/hello/hello matches
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Binary file Qt-4.8.7-arm/examples/declarative/text/fonts/banner/banner matches
Binary file Qt-4.8.7-arm/examples/declarative/text/fonts/availableFonts/availableFonts matches
Binary file Qt-4.8.7-arm/examples/declarative/text/textselection/textselection matches
Binary file Qt-4.8.7-arm/examples/declarative/imageelements/shadows/shadows matches
Binary file Qt-4.8.7-arm/examples/declarative/imageelements/borderimage/borderimage matches
Binary file Qt-4.8.7-arm/examples/declarative/imageelements/image/image matches
Binary file Qt-4.8.7-arm/examples/declarative/cppextensions/networkaccessmanagerfactory/.obj/release-shared-emb-arm/moc_qmlapplicationviewer.o matches
Binary file Qt-4.8.7-arm/examples/declarative/cppextensions/networkaccessmanagerfactory/networkaccessmanagerfactory matches
Binary file Qt-4.8.7-arm/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/.obj/release-shared-emb-arm/moc_qmlapplicationviewer.o matches
Binary file Qt-4.8.7-arm/examples/declarative/cppextensions/qgraphicslayouts/qgraphicslinearlayout/qgraphicslinearlayout matches
Binary file Qt-4.8.7-arm/examples/declarative/cppextensions/qgraphicslayouts/qgraphicsgridlayout/.obj/release-shared-emb-arm/moc_qmlapplicationviewer.o matches
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Binary file Qt-4.8.7-arm/examples/widgets/groupbox/groupbox matches
Binary file Qt-4.8.7-arm/examples/widgets/spinboxes/spinboxes matches
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Binary file Qt-4.8.7-arm/examples/qws/mousecalibration/mousecalibration matches
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Qt-4.8.7-arm/include/Qt/qwidget.h:    virtual bool qwsEvent(QWSEvent *);
Qt-4.8.7-arm/include/Qt/qapplication.h:    virtual bool qwsEventFilter(QWSEvent *);
Qt-4.8.7-arm/include/Qt/qgraphicswidget.h:    //virtual bool qwsEvent(QWSEvent *event);
Qt-4.8.7-arm/include/QtGui/qwidget.h:    virtual bool qwsEvent(QWSEvent *);
Qt-4.8.7-arm/include/QtGui/qapplication.h:    virtual bool qwsEventFilter(QWSEvent *);
Qt-4.8.7-arm/include/QtGui/qgraphicswidget.h:    //virtual bool qwsEvent(QWSEvent *event);
Binary file Qt-4.8.7-arm/lib/libQtSvg.so.4.8.7 matches
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Binary file Qt-4.8.7-arm/tests/qt4/tst_hybridPixmap/hybridPixmap matches
root@athar-HP-Z420-Workstation:/usr/local# egrep -r x11Event Qt-4.8.7-arm/*
Qt-4.8.7-arm/include/Qt/qwidget.h:    virtual bool x11Event(XEvent *);
Qt-4.8.7-arm/include/Qt/qapplication.h:    virtual bool x11EventFilter(XEvent *);
Qt-4.8.7-arm/include/Qt/qgraphicswidget.h:    //virtual bool x11Event(XEvent *event);
Qt-4.8.7-arm/include/Qt/qx11embed_x11.h:    bool x11Event(XEvent *);
Qt-4.8.7-arm/include/Qt/qx11embed_x11.h:    bool x11Event(XEvent *);
Qt-4.8.7-arm/include/QtGui/qwidget.h:    virtual bool x11Event(XEvent *);
Qt-4.8.7-arm/include/QtGui/qapplication.h:    virtual bool x11EventFilter(XEvent *);
Qt-4.8.7-arm/include/QtGui/qgraphicswidget.h:    //virtual bool x11Event(XEvent *event);
Qt-4.8.7-arm/include/QtGui/qx11embed_x11.h:    bool x11Event(XEvent *);
Qt-4.8.7-arm/include/QtGui/qx11embed_x11.h:    bool x11Event(XEvent *);

Last two command resulted the same while executed on target board.

]]>https://forum.qt.io/post/552648https://forum.qt.io/post/552648Tue, 24 Sep 2019 13:45:02 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 23 Sep 2019 18:36:57 GMT]]>Run ldd on your executable. You will likely see the distribution provided Qt rather than the one you cross-compiled.

]]>https://forum.qt.io/post/552500https://forum.qt.io/post/552500Mon, 23 Sep 2019 18:36:57 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 23 Sep 2019 07:56:19 GMT]]>@SGaist Thank you very much. I cross compiled qt-4.8.7 with gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux cross compiler. I created .img file of the installed folder and mounted on root of my target device. then i created a simple application on my host system for the target device with same cross compiler and qmake. I checked my executable as follow

file <myexe>
<myexe>: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.1.1, BuildID[sha1]=67324567f3bc1d67e9bc876e670ed6e8fcd3a061, not stripped

The image file on which qt is installed is mounted on /mnt/

Now when i try to execute my executable file, something appears but vanishes instantly with following error on terminal ( I tried ./myexe and ./myexe -qws but got same error message)

Fontconfig warning:ignoring C.UTF-8: not a valid language tag
./myexe: symbol lookup error: ./myexe: undefined symbol: _ZN7QWidget8qwsEventEP8QWSEvent

I'm feeling that i'm missing some path setting but i have no clue about that. I have searched this error but nothing resolved it.

]]>https://forum.qt.io/post/552392https://forum.qt.io/post/552392Mon, 23 Sep 2019 07:56:19 GMT<![CDATA[Reply to QT installation failed on arm71 on Tue, 20 Aug 2019 13:36:10 GMT]]>@frkhan I understand what you are saying, the thing is that x64 is a common abbreviation for the Intel x86-64 architecture (sometimes called AMD64), which is different from ARM.

]]>https://forum.qt.io/post/546993https://forum.qt.io/post/546993Tue, 20 Aug 2019 13:36:10 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 19 Aug 2019 18:38:00 GMT]]>Sure thing, it's all in the dedicated chapter in Qt's documentation.

Note that you can also build only the modules you need beside qtbase. You'll save time and space.

]]>https://forum.qt.io/post/546860https://forum.qt.io/post/546860Mon, 19 Aug 2019 18:38:00 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 19 Aug 2019 12:15:32 GMT]]>@sgaist Thanks for info . I am newbie . would highly appreciate if you direct me to some link/tutorial for building QT version of my interest

]]>https://forum.qt.io/post/546814https://forum.qt.io/post/546814Mon, 19 Aug 2019 12:15:32 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 19 Aug 2019 12:11:02 GMT]]>Hi and welcome to devnet,

@frkhan said in QT installation failed on arm71:

@lenticularis Actually arm71 is 32 bit architecture . I didn't find any QT Link for Linux 32 bit architecture

Because the pre-built packages for 32bit have be stopped a long time ago due to very low number of downloads.

Excluding Android, note that there are no pre-built package for ARM, either 64 or 32 bit. You have to build Qt yourself if you don't use a version coming with your distribution.

]]>https://forum.qt.io/post/546810https://forum.qt.io/post/546810Mon, 19 Aug 2019 12:11:02 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 19 Aug 2019 09:57:43 GMT]]>@lenticularis Actually arm71 is 32 bit architecture . I didn't find any QT Link for Linux 32 bit architecture

]]>https://forum.qt.io/post/546788https://forum.qt.io/post/546788Mon, 19 Aug 2019 09:57:43 GMT<![CDATA[Reply to QT installation failed on arm71 on Mon, 19 Aug 2019 08:12:33 GMT]]>Hi FRKhan,

I think the binary is compiled for x86_64, therefore it does not run on ARM; you can check it using this command:

file qt-opensource-linux-x64-5.13.0.run
]]>https://forum.qt.io/post/546758https://forum.qt.io/post/546758Mon, 19 Aug 2019 08:12:33 GMT