QT installation failed on arm71
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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 ?
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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 -
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@lenticularis Actually arm71 is 32 bit architecture . I didn't find any QT Link for Linux 32 bit architecture
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@lenticularis Actually arm71 is 32 bit architecture . I didn't find any QT Link for Linux 32 bit architecture
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.
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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.
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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.
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@lenticularis Actually arm71 is 32 bit architecture . I didn't find any QT Link for Linux 32 bit architecture
@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.
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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.
@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 strippedThe 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: _ZN7QWidget8qwsEventEP8QWSEventI'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.
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Run ldd on your executable. You will likely see the distribution provided Qt rather than the one you cross-compiled.
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Run ldd on your executable. You will likely see the distribution provided Qt rather than the one you cross-compiled.
@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 abortedhere 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 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Qt-4.8.7-arm/examples/widgets/analogclock/analogclock matches Binary file Qt-4.8.7-arm/examples/widgets/charactermap/charactermap matches Binary file Qt-4.8.7-arm/examples/widgets/calculator/calculator matches Binary file Qt-4.8.7-arm/examples/widgets/movie/movie matches Binary file Qt-4.8.7-arm/examples/widgets/stylesheet/stylesheet matches Binary file Qt-4.8.7-arm/examples/widgets/validators/validators matches Binary file Qt-4.8.7-arm/examples/widgets/codeeditor/codeeditor matches Binary file Qt-4.8.7-arm/examples/qws/mousecalibration/mousecalibration matches Binary file Qt-4.8.7-arm/examples/qws/simpledecoration/simpledecoration matches Binary file Qt-4.8.7-arm/examples/network/qftp/qftp matches Binary file Qt-4.8.7-arm/examples/network/broadcastsender/broadcastsender matches Binary file Qt-4.8.7-arm/examples/network/multicastsender/multicastsender matches Binary file Qt-4.8.7-arm/examples/network/threadedfortuneserver/threadedfortuneserver matches Binary file Qt-4.8.7-arm/examples/network/googlesuggest/googlesuggest matches Binary file Qt-4.8.7-arm/examples/network/multicastreceiver/multicastreceiver matches Binary file Qt-4.8.7-arm/examples/network/torrent/torrent matches Binary file Qt-4.8.7-arm/examples/network/network-chat/network-chat matches Binary file Qt-4.8.7-arm/examples/network/fortuneclient/fortuneclient matches Binary file Qt-4.8.7-arm/examples/network/fortuneserver/fortuneserver matches Binary file Qt-4.8.7-arm/examples/network/broadcastreceiver/broadcastreceiver matches Binary file Qt-4.8.7-arm/examples/network/loopback/loopback matches Binary file Qt-4.8.7-arm/examples/network/http/http matches Binary file Qt-4.8.7-arm/examples/network/blockingfortuneclient/blockingfortuneclient matches Binary file Qt-4.8.7-arm/examples/qtconcurrent/imagescaling/imagescaling matches Binary file Qt-4.8.7-arm/examples/gestures/imagegestures/imagegestures matches Binary file Qt-4.8.7-arm/examples/dialogs/tabdialog/tabdialog matches Binary file Qt-4.8.7-arm/examples/dialogs/standarddialogs/standarddialogs matches Binary file Qt-4.8.7-arm/examples/dialogs/extension/extension matches Binary file Qt-4.8.7-arm/examples/dialogs/configdialog/configdialog matches Binary file Qt-4.8.7-arm/examples/dialogs/classwizard/classwizard matches Binary file Qt-4.8.7-arm/examples/dialogs/findfiles/findfiles matches Binary file Qt-4.8.7-arm/examples/dialogs/licensewizard/licensewizard matches 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 Binary file Qt-4.8.7-arm/lib/libQtGui.so.4.8.7 matches Binary file Qt-4.8.7-arm/lib/libQtWebKit.so.4.9.4 matches Binary file Qt-4.8.7-arm/lib/libQtScriptTools.so.4.8.7 matches Binary file Qt-4.8.7-arm/lib/libQtDeclarative.so.4.8.7 matches Binary file Qt-4.8.7-arm/lib/libQt3Support.so.4.8.7 matches 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.
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Did you run ldd on your target ?
In any case, did you install your cross-compiler Qt on your target ? -
Did you run ldd on your target ?
In any case, did you install your cross-compiler Qt on your target ?@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
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@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
@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...
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One thing to do: copy the Qt installation folder in the exact same subdirectory on your target than on your desktop machine.
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@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...
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? -
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.
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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.
@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?
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Do you have a window manager on your target ?
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Then why are you using a Qt version built for embedded without window manager ?
