Error "no version information available"

neda

Hi,
I want to execute a "Qt Quick Controls Application" from windows to Raspberry pi3.
I use this link:
https://visualgdb.com/tutorials/raspberry/qt/embedded/

I can run "Qt Widgets Application" but I can not run "Qt Quick Controls Application" and I have this error:

/home/pi/untitled4: /usr/lib/arm-linux-.
...
....
QQmlApplicationEngine failed to load component
qrc:/main.qml:2 module "QtQuick" is not installed

Update: I reinstalled Qt and I have new error:

QML debugging is enabled. Only use this in a safe environment.
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
QQmlApplicationEngine failed to load component
qrc:/main.qml:2 module "QtQuick.Controls" plugin "qtquickcontrolsplugin" not found

sierdzio

That guide is quite outdated. Check this one: https://wiki.qt.io/RaspberryPi2EGLFS I've followed it literally 2 days ago and it worked (with one small change: I added -no-gold-linker config option, and I skipped some Qt modules which I don't need: webview, script, qtquick1 etc.).

To me it looks like your deployment is not complete - Qt is not properly installed on RPi. If you try to compile and run some QtWidgets example, does it work?

neda

@sierdzio said in Error "no version information available":

If you try to compile and run some QtWidgets example, does it work?

yes

sierdzio

Hm, ok so at least some parts do work.

I still suspect that something is wrong with that guide - they claim it is ok to get qmake error during build and then do a partial reconfigure... this stinks. And they mix -xplatform with -device which is unnecessary (at least in newer Qt versions. Qt 5.5 is very old). When you open your qt installation directory (== where "make install" copied the libs), do you see any contents in <install dir>/qml/QtQuick/Controls.2/ ?

neda

@sierdzio said in Error "no version information available":

do you see any contents in <install dir>/qml/QtQuick/Controls.2/ ?

yes

<install dir> => /usr/local/qt5

sierdzio

how? Qt 5.5 did not have Controls.2 o_O. Which Qt version have you compiled?

Well, I don't know. If QtWidgets examples work, it means the config is more or less good, and plugins dir is visible. Weird, weird. Check http://doc.qt.io/qt-5/deployment-plugins.html maybe?

neda

@sierdzio said in Error "no version information available":

Which Qt version have you compiled?

Qt 5.5

I don't know. Maybe I copied manual. I don't remember.

sierdzio

@neda said in Error "no version information available":

@sierdzio said in Error "no version information available":

Which Qt version have you compiled?

Qt 5.5

I don't know. Maybe I copied manual. I don't remember.

I'm sorry, then, I can't help if you don't know what you are working with. Get your environment sorted out and then come back if the problem persists.

I strongly recommend following this guide - it really works. The on you are using looks broken to me.

BTW. Here you claim you are on Qt 5.6.1.

neda

@sierdzio said in Error "no version information available":

Get your environment sorted out and then come back if the problem persists.

Thank you. yes that's right.
I do all steps again.