Can't cross compile modules for raspberry pi

Igbf

I'm a neofite in Qt, and I am trying to set up a development enviroment to cross compile for a raspberry pi 2 that will form an embedded system for a motorcycle.

I am using Qt 5.5.1 (tried 5.6 aswell, but i prefer to stay on the stable release if possible), and buildroot with minimal packages (just Qt and CANBUS support) as operating system for the raspberry pi.

For now i just want to run some tests, and get the example "Qt Quick Extras - Dashboard" (somewhat close to what i want as the interface of my raspberry, fed with real data) from Qt 5.5.1 examples compiled for my platform. I have been following this guide: https://wiki.qt.io/RaspberryPi2EGLFS , got qmake working, and managed to compile a "hello world" program, but it seems that i am missing some libraries (Qt quick most notably) to compile the whole dashboard project:
http://i.imgur.com/5JPpYKH.png

I tried to compile Qt Quick from source like the wiki says, cloning the 5.5.1 version of the corresponding repo and calling qmake

~/raspi/qt5/bin/qmake -r

...but I get an error

Project ERROR: Unknown module(s) in QT: qml quick quick-private qml-private

I guess i must compile some other modules first, but I'm not sure what I am looking for. Searched for solutions (https://forum.qt.io/topic/42211/solved-unknown-module-s-in-qt-quick-qml/16) but none of them seemed related to my problem.

Any help will be really appreciated.

SGaist

Hi and welcome to devnet,

IIRC, you need to build the QtDeclarative and QtQuickControls module

Igbf

Many thanks for your help. It worked after compiling QtDeclarative. Now It seems I am missing QtGraphicalEffects, will look into it tomorrow. I should also find a workarround to show my application fullscreen with no window system at all (or is that behaviour already implemented in the Window class?)

Just curious, How can I know the dependencys? Is it possible to know only from the error output? I did not see any reference pointing QtDeclarative until you wisely stated it.

edit: Finally could not wait and got it working. Thank you for your help again :)

Igbf

This post is deleted!

Zola

@Igbf Look at Qt documentation, every module have dependencies described.

Igbf

I might be looking in the wrong places, but i can't find the dependencies listed in the documentation, for example i see no trace of QtDeclarative arround: http://doc.qt.io/qt-5/qtquickcontrols-index.html

No luck in the compiling instructions either. You meant the wiki maybe?

SGaist

I don't remember if there's a defined place in the documentation for that but since you have the source, take a look at the sync.profile file.

Igbf

@SGaist Thanks, that is what i was looking for.

Husain

@SGaist
I am newbie to QT. I am facing same error for qml-private. Can you tell me how I can build QtDeclarative?