CODEWITHSUNDEEP
qt5yoctoqtwebengine
Georg P.
Georg P.

Reputation: 3164

Yocto SDK, QtWebEngine: Unknown module(s) in QT: webengine

I'm doing my first steps with Qt and QtWebEngine on an embedded board (i.MX6), using Yocto. Using provided example recipes, like the quicknanobrowser, works nicely on the target. So I can't confirm this answer which claims that WebEngine is not available on embedded platforms.

Now I want to write my own QML application and deploy it on the board. With the recipe meta-toolchain-qt5 I created an SDK and installed it. In QtCreator I set all paths to the SDK installation and tried to build it, but got this error:

Project ERROR: Unknown module(s) in QT: webengine
11:13:13: The process "/opt/poky/1.8/sysroots/x86_64-pokysdk-linux/usr/bin/qt5/qmake" exited with code 3.

It turned out that WebEngine was not included in the SDK. Thanks to this answer, I fixed that by putting the following to my own packagegroup-qt5-toolchain-target.bbappend file:

RDEPENDS_${PN} += " \
    qtwebengine \
    qtwebengine-qmlplugins \
    qtquickcontrols-qmlplugins \
    qtwebengine-examples \
"

Then reinstalled the SDK. Now it seems that all WebEngine files are available in the SDK installation (the zsh glob pattern below matches all directories in any subdirectory of /opt/poky/1.8/, which contain "webengine", case-insensitively):

% ls -1 -d (#i)/opt/poky/1.8/**/*webengine*(/)
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include/qt5/QtWebEngine/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include/qt5/QtWebEngine/5.4.3/QtWebEngine/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include/qt5/QtWebEngineWidgets/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/include/qt5/QtWebEngineWidgets/5.4.3/QtWebEngineWidgets/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/lib/qt5/qml/QtWebEngine/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/share/qt5/examples/webengine/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/share/qt5/examples/webenginewidgets/
/opt/poky/1.8/sysroots/cortexa9hf-vfp-neon-poky-linux-gnueabi/usr/share/qt5/translations/qtwebengine_locales/

Still, I get the same Unknown module error. This is independent of QtCreator, and can also be shown by directly calling qmake:

% source /opt/poky/1.8/environment-setup-cortexa9hf-vfp-neon-poky-linux-gnueabi
% /opt/poky/1.8/sysroots/x86_64-pokysdk-linux/usr/bin/qt5/qmake /home/me/test/test.pro -r -spec linux-oe-g++ CONFIG+=debug CONFIG+=declarative_debug CONFIG+=qml_debug
Project ERROR: Unknown module(s) in QT: webengine

The project itself should be fine, because it compiles and runs without problems on the Desktop installation.

Any ideas? Are there maybe still some files missing in the SDK? Where does qmake search for the modules? How can I tell qmake where to find the WebEngine installation?

Upvotes: 0

Views: 2641

Answers (1)

Charles C.
Charles C.

Reputation: 3913

In /opt/poky/1.8/environment-setup-cortexa9hf-vfp-neon-poky-linux-gnueabi

add sh /opt/poky/1.8/sysroots/x86_64-pokysdk-linux/environment-setup.d/qt5.sh

This will set up the Qt5 environment.

Upvotes: 0

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