Unsolved Project ERROR: Unknown module(s) in QT: designer
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Dear @SGaist ,
Yes, your suggestion is correct. After comment out
QWT_CONFIG += QwtDesigner
I can use rpi(/arm-linux-gnueabihf-g++) compiler the qwt project without error.
Though I still don't know how to add qwt into designer correctly, this may belong to different topic. I will arrange my test procedure and create different topic.
Thanks.
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The plugin for Designer must be built with the same version of Qt than Designer/Creator was built with (on Windows this includes compiler version).
That's why it's recommended to split the plugin project in two:
- One is a library with all the widget(s)
- One is the plugin itself
The plugin will be used to design your widget while the library will be used to link the application thus when you cross-compile you only need the library for the target.
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I installed QT Creator into the ubuntu 16.04,
After first compiler by linux-g++,
libqwt_designer_plugin.so
was created.
and then I open terminal and run "sudo make install" in/build-qwt-Desktop_Qt_5_8_0_GCC_64bit-Debug/
. Then I can see qwt-6.1.3 folder was generated to/usr/local
then as @SGaist said, I comment out qwtdesigner, then run 2nd compiler.
2nd compiler is linux-rasp-pi-g++, then generate../build-qwt-Raspberry_Pi-Debug
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Where should I copy
libqwt_designer_plugin.so
to ??
I expect after this process, I should able to see qwt widget in designer, right ?
I had tried copy to ~/Qt5.8.0/5.8/gcc_64/plugins/designer , but not working. -
Should I do
sudo make install
in the ../build-qwt-Raspberry_Pi-Debug after 2nd compiler ? -
After 2nd compiler, I think I should copy all
../build-qwt-Raspberry_Pi-Debug/lib
to some place, but where ?? Replace everything in the /usr/local/qwt-6.1.3/lib ??
Appreciate for any help~
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The plugin should go within the installation of Qt Creator
You should have your cross-compiled Qwt in it's own folder.
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Dear Sirs,
I want to make qwt widget show on designer first, so I copy
libqwt_designer_plugin.so
to below foler, one by one./Qt5.8.0/5.8/gcc_64/plugins/designer
/Qt5.8.0/Tools/QtCreator/lib/qtcreator/plugins
/Qt5.8.0/Tools/QtCreator/lib/Qt/plugins/designer
/Qt5.8.0/Tools/QtCreator/lib/qtcreator/plugins/qbs/plugins
/Qt5.8.0/Tools/QtCreator/bin/designer <--manual create bin/designer folder
/usr/local/qwt-6.1.3/plugins/designer <--manual create plugins/designer folderUnfortunately, none of them work... Any idea ?
PS. I re-open Qt Creator after copy to the folder each time.
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Did you check that you are using the same version of Qt that was used to build Qt Creator ?
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Dear @SGaist ,
I think they are the same, when I install qt creator I just download *.run file to complete the installation, so I think it use default make to build qt creator. Default gcc version is:
x86_64-linux-gnu
When compiler qwt desktop(ubuntu) version, I didn't export different compiler. So Qwt and qt creator should use the same make and gcc version.
Is there any point I can check ?
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You can start Qt Creator on the command line after setting the
QT_DEBUG_PLUGINS
environment variable to 1 so you can see what is happening with your plugin. -
Dear @SGaist ,
I reinstall QT Creator and copy libqwt_designer_plugin.so to
~/Qt5.8.0/Tools/QtCreator/lib/Qt/plugins/designer/, then I can see qwt widget in the designer.I have not complete the whole process, but this is a good start. Thanks.
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What do you mean by "all process" ?
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Dear @SGaist ,
I can run on Ubuntu. Then I rebuild by Raspberry and did:
sudo make install
then copy lib to
~/Qt5.8.0/Tools/QtCreator/lib/Qt/lib/ ~/Qt5.8.0/5.8/gcc_64/lib/
then build Qwt example OK, but when I run it, it show:
error while loading shared libraries: libqwt.so.6
So I think I didn't complete all process~
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Dear All,
After surf the Internet, it can be solved easily by
https://stackoverflow.com/questions/5375523/how-to-set-qwt-path-or-environment-variable?rq=1Just copy *.so to RPi then add path to /etc/ld.so.conf
Thanks everyone.