Pb compilation: qwt 6.1.3 and Qt 5.8

[nicolasjoly]

Hi,

I have just upgraded my Qt 4 into Qt 5 (version 5.8). I then had to upgrade my version of qwt and tried to install qwt 6.1.3 but I keep having the same error message:

In file included from qwt_designer_plugin.cpp:23:
In file included from ./qwt_designer_plugin.h:13:
/Applications/QT5/5.8/clang_64/lib/QtDesigner.framework/Headers/QDesignerCustomWidgetInterface:4:4: warning: Header
<QtDesigner/QDesignerCustomWidgetInterface> is deprecated. Please include <QtUiPlugin/QDesignerCustomWidgetInterface> instead. [-W#warnings]
# warning Header <QtDesigner/QDesignerCustomWidgetInterface> is deprecated. Please include <QtUiPlugin/QDesignerCustomWidgetInterface> instead.
^
/Applications/QT5/5.8/clang_64/lib/QtDesigner.framework/Headers/QDesignerCustomWidgetInterface:8:10: fatal error:
'QtUiPlugin/QDesignerCustomWidgetInterface' file not found
#include <QtUiPlugin/QDesignerCustomWidgetInterface>


Has anyone got any idea how to fix this?
Thanks in advance,
Nick

[Uwe]

The warning a known problem of qmake: see https://bugreports.qt.io/browse/QTBUG-50913.

The error is probably because of not having configure Qt to include support for designer plugins. If you need the Qwt designer plugin you probably have to rebuild Qt - if not you can simply disable building it in qwtconfig.pri ( see QwtDesigner ).

Uwe

[Joe Clicker]

I too saw this exact problem also. I too upgraded my Qt 4.7 into Qt 5,8. I then had to upgrade my version of qwt5.5 and tried to install qwt 6.1.3
but I keep having the same error message:

/Applications/QT5/5.8/clang_64/lib/QtDesigner.framework/Headers/QDesignerCustomWidgetInterface:8:10: fatal error:
'QtUiPlugin/QDesignerCustomWidgetInterface' file not found
#include <QtUiPlugin/QDesignerCustomWidgetInterface>

Question
Uwe states; The error is probably because of not having configure Qt to include support for designer plugins.

How can I test my Qt5.8 install to prove that is does indeed not support designer plugins
What's the test / terminal command to do this?

thanks