QPA header files

appas

Hi,
I am trying to compile a project ( https://github.com/cmdrkotori/mpc-qt-origin ), but I am getting this compilation error:

mpvwidget.cpp:7:10: fatal error: qpa/qplatformnativeinterface.h: No such file or directory
    7 | #include <qpa/qplatformnativeinterface.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I installed QT from apt with

apt install qtcreator qt5-default libqt5x11extras5-dev qttools5-dev-tools

Do I need something else? Which package is this header in?

appas

Ok, I found it using apt-file. On my system, it is provided by qtbase5-private-dev. After installing that package, I was able to compile the project.

Thanks for the replies.

sierdzio

It is part of Qt private API in GUI module. So you need to include the private parts:

QT += gui-private

Then re-run qmake and rebuild your project.

appas

@sierdzio said in QPA header files:

It is part of Qt private API in GUI module. So you need to include the private parts:
QT += gui-private
Then re-run qmake and rebuild your project.

I added gui-private to the QT += line of mpc-qt.pro and ran qmake, then make clean and make, but I still get the same error.

mrjj

@appas
But do you have this file at all ?

appas

@mrjj said in QPA header files:

@appas
But do you have this file at all ?

No - even though I installed all the listed dependencies of the project. That's why I asked "Which package is this header in?".

mrjj

@appas
Hi
Not sure when repacked to ubuntu repository.
Its normally just included with the online installer.

on windows mine is in
"C:\Qt\5.14.2\msvc2017\include\QtGui\5.14.2\QtGui\qpa\qplatformnativeinterface.h"

appas

Ok, I found it using apt-file. On my system, it is provided by qtbase5-private-dev. After installing that package, I was able to compile the project.

Thanks for the replies.

Pablo J. Rogina

@appas said in QPA header files:

I was able to compile the project.

great, so if your issue is solved please don't forget to mark your post as such