Qt for Raspberry Pi - Qt 5.14.2 cross compilation for Raspberry Pi 4 model B - Run Qt on Raspberry

Greate video, since ubuntu release version for raspberry pi, how to cross compile for ubuntu server on rpi4 without X?

Hello, I am trying this solution on raspberry pi Ver 3.0 B model. when I try "rsync -avz pi@raspberry ip:/lib sysroot" it gives me : sent 27 bytes received 53 bytes 53.33 bytes/sec
total size is 7 speedup is 0.09
with no syncing
_
I Tried "rsync -avz pi@raspberry ip:/lib/ sysroot" notice I added the forward slash after "lib"instead it works but it copies what's inside the lib directory directly
_
I don't know what should I do to sync the lib as main directory

The guide works perfect with Ubuntu 20.04 LTS, Pi OS 10, QT 5.12.8! Thanks a lot!
I added only "mkdir sysroot sysroot/usr sysroot/opt" before rsync

First: Thank you so much. Next: There are 27 hits for "rsync" in the comments because of errors in your test file. I was able to solve by first creating the directories in sysroot AND adding a "/" after the path of the source (without the quotes). There seems to be no need for the --rsync-path. Hope this helps people.. Otherwise it only seems to setup a link..

thanks a lot

Hey Ulas ! Nice tuto! I have some question or poblem, I hope you have some advices. I have a project with guis and widgets. I can build it on windows and I can run it on windows fine. However the main goal is run on RPI3 or RPI4. I would like to compile the qmake on wsl 64 bit, then build my project without rsync back the qt5pi folder to rpi /usr/local. So many pages tell me this is an important step. How does it possible? I guess the configure needs some extra params. If I build directly on RPI the binary and move the binary to another "virgin" rpi it can run nicely. However after cross compiling there is always some QT_QPA problems with libqxcb or eglfs. I guess I have to statically add all gui libs (GLES, EGL, xcb, etc... ) But I have no idea how to do that... Thanks in advance

Hi Ulas. Your video guide is very complete and clear. I'm stuck in a problem. I've managed to successfully compile qt, deploy a test program and your example but when I try to start editing the forms in the designer, the tab with QML Types is all white (empty) and there is a warning sign in the navigator tab besides "page" and "label" elements already inserted by the wizard that says "Item could not be created". It actually seems that you had errors as well when you create the empty project or open your example. I already tried to add qml path to .pro file in "QML_IMPORT_PATH" and "QML_DESIGNER_IMPORT_PATH" but then the designer crash with a message "Line 1: Qt Quick emulation layer crashed". Please help!!

Thank you so much for the detailed steps! Before your tutorials I have tried many times and all failed. Follow your tutorials, I got Qt working in my raspberrypi.

while cross compiling it says line 299: cmake: command not found.... any help?

Anyone experience the following OpenGL error at the end of the configure command?

WARNING: Tool flex is required to build QtWebEngine.

WARNING: Tool flex is required to build QtPdf.

WARNING: QtWebEngine will not be built.

WARNING: QtPdf will not be built.

ERROR: Feature 'opengles2' was enabled, but the pre-condition '(config.win32 && !features.opengl-dynamic) || (!config.watchos && !features.opengl-desktop && libs.opengl_es2)' failed.

ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.

What about rpi3

Thanks for the video!!! However, I ran into two problems: 1) the make install spit out some error on geoservice and location related. 2) I ran out from virtual machine disc space. any clue?

Hello, when I want to run a project with SSH connection, I get the following error line.

qt.qpa.plugin: Could not find the Qt platform plugin "eglfs" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: linuxfb, minimal, offscreen, vnc, webgl, xcb.
Aborted

Do you have anything to say about this error?

thank you! It works perfectly for qmake projects. CMake projects are not working. Any tips?

Greetings from 2021, it doesnt work, shitload of errors. Dont waste your time.

benim aldığım bir problem var rasp4 için: eglfs x11, linux fb, vnc =yes fakat EGLFS Raspberry pi No olması gerekirken yes olarak görünüyor. ubuntu 18.04 raspery OS kullanıyorum bu seçeneklerle make ettiğim zaman libbrcm hataları alıyorum.
bu konuda yardımcı olabilecek varmı ??

at all this is great work!
but when I reach 9.36 when I write "sudo apt-get build-dep qt5-qmake " the OS asked to put some source URIs in the sources list
how can I fix this .

thanks for the great video sir, but i want to ask why is there no "arm-linux-gnueabihf" folder in my usr/bin/ raspberry pi?

rsync command returned this error. receiving incremental file list

sent 20 bytes received 60 bytes 10.67 bytes/sec
total size is 7 speedup is 0.09
Any idea how to solve this problem? it is clear that the remote and local are not synchronized

how to build in bullseye ?

Hi Ulas, I am trying to build QT 5.14 for Raspberry pi 4. I followed your video as its. But still getting error related opengles2 and EGL. Kindly help me. "ERROR: Feature 'opengles2' was enabled, but the pre-condition " "ERROR: Feature 'eglfs' was enabled, but the pre-condition " "ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform."

Anyone had luck with 64 bit bullseye release, looking to build everything including QWebengine, almost there.. Hung on crt.o stuff .. needing a good mkspec/device ..

My qmake file was not found plz help

A great tutorial

Ulas Bey merhaba. Qt6 için de kurulumu anlatabilir misiniz? Bir türlü kuramadım.

Will this fix: No Module Named PySide Error?

i am facing errors such like "error: ‘numeric_limits’ is not a class template qt"

Why did cat qt-everywhere-src-5.15.2 returns cat: qt-everywhere-src-5.15.2: est un dossier ?

Is same steps/process applicable for Raspberry Pi 3 B+ model? If not, what changes need to do?

Thank you for the detailed steps. I am following your tutorial and while trying to run build script, getting following error "ERROR: Cannot compile a minimal program. The toolchain or QMakeSpec is broken." any ideas what should i do ?

If u get error on rsync, go check ur folder (/opt/qt5pl/) i see warning icon folder “sysroot” and delete that folder, then run rsync….. commands again, it worked

from /opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h:44,
from /opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/qendian.h:1,
from /opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/src/corelib/codecs/qutfcodec.cpp:43:
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:300:7: error: ‘numeric_limits’ is not a class template
300 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> : public numeric_limits<float>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:300:77: error: expected template-name before ‘<’ token
300 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> : public numeric_limits<float>
| ^
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:300:77: error: expected ‘{’ before ‘<’ token
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:344:18: error: ‘numeric_limits’ is not a class template
344 | template<> class numeric_limits<const QT_PREPEND_NAMESPACE(qfloat16)>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:344:69: error: ‘std::numeric_limits’ is not a template
344 | template<> class numeric_limits<const QT_PREPEND_NAMESPACE(qfloat16)>
| ^
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:300:7: note: previous declaration here
300 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> : public numeric_limits<float>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:345:28: error: expected template-name before ‘<’ token
345 | : public numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> {};
| ^
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:346:18: error: ‘numeric_limits’ is not a class template
346 | template<> class numeric_limits<volatile QT_PREPEND_NAMESPACE(qfloat16)>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:346:72: error: ‘std::numeric_limits’ is not a template
346 | template<> class numeric_limits<volatile QT_PREPEND_NAMESPACE(qfloat16)>
| ^
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:300:7: note: previous declaration here
300 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> : public numeric_limits<float>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:347:28: error: expected template-name before ‘<’ token
347 | : public numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> {};
| ^
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:348:18: error: ‘numeric_limits’ is not a class template
348 | template<> class numeric_limits<const volatile QT_PREPEND_NAMESPACE(qfloat16)>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:348:78: error: ‘std::numeric_limits’ is not a template
348 | template<> class numeric_limits<const volatile QT_PREPEND_NAMESPACE(qfloat16)>
| ^
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:300:7: note: previous declaration here
300 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> : public numeric_limits<float>
| ^~~~~~~~~~~~~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:349:28: error: expected template-name before ‘<’ token
349 | : public numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> {};
| ^
In file included from /opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/qendian.h:1,
from /opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/src/corelib/codecs/qutfcodec.cpp:43:
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h: In static member function ‘static constexpr QSpecialInteger<S> QSpecialInteger<S>::max()’:
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h:331:30: error: ‘std::numeric_limits’ is not a template
331 | { return QSpecialInteger(std::numeric_limits<T>::max()); }
| ^~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h:331:54: error: incomplete type ‘std::numeric_limits’ used in nested name specifier
331 | { return QSpecialInteger(std::numeric_limits<T>::max()); }
| ^~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h: In static member function ‘static constexpr QSpecialInteger<S> QSpecialInteger<S>::min()’:
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h:333:30: error: ‘std::numeric_limits’ is not a template
333 | { return QSpecialInteger(std::numeric_limits<T>::min()); }
| ^~~
/opt/qt5pi/qt-everywhere-src-5.15.2/qtbase/include/QtCore/../../src/corelib/global/qendian.h:333:54: error: incomplete type ‘std::numeric_limits’ used in nested name specifier
333 | { return QSpecialInteger(std::numeric_limits<T>::min()); }
| ^~~
gmake: * [Makefile:383: qutfcodec.o] Error 1

40 minutes of watching a terminal with installation logs??? Are you kidding? Kompalishin...

Big thanks for this guide! This is one of only available guides about this that I managed to find. I was able to compile Qt for Orange Pi 4 lts. I used linaro for aarch64-gnu-linux instead since my computer has 64 bit CPU unlike raspberry pi in this video. I also had to create my own device configuration in qtbase/mkspecs/devices/ since there are no configurations for orangepi, but it was pretty easy. I also used Qt 5.15.2 instead because the project I was porting used this version. For some reason, qtwebengine wasn't compiling due to some missing libraries, so I had to -skip it during configuration, but I don't think Ill need it.

You are the GOAT! Thank you very much!!!!

Merhaba Tutorial için teşekkürler, bütün adımları uyguladım çalıştı. Fakat, herhangi bir proje oluşturduğumda autocomplete özelliğinin çalışmadığını gördüm. Bu sorunu nasıl çözebilirim.
Hi, thanks for the tutorial, I have done all steps respectively and it finally works!. But I have recognized that autocomplete feature doesnt work when I created a sample project. Could you give me an advice about how to solve this problem ?

Sure would be nice if you could do this with the Microsoft 10 OS. Other words cross compile from windows 10 to RPI4 using the official RPI4 OS of the time.
I've done it with Linux a few years ago, and seems that many tutorials want you to use a VM. Not my way of doing things. Please consider and help, probably would be a benefit to many!

i can't find the /opt/vc/ directory in my raspberry, and i couldnt also build it from source, what should i do ?

For rsync fault :
Your Raspberry Pi's pi user must either be granted root privileges, or you can set a root password and then configure the sshd_config file by setting PermitRootLogin yes.

super super super luv u