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

[Vevinlong]

Hello

The environment of mine is:

• Device: raspberry 3b +
• OS:2017-11-29-raspbian-stretch
• Qt version: 5.7.1. installed by sudo apt-get install qt5-default , sudo apt-get install qtcreator and sudo apt-get install qt-sdk.

There is something wrong when I build QtInstallerFramework, because I find it just supported for windows, mac, linux(x86) .

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

I am wondering is there any other way to build it? what should I do?

Thank you!

[Vevinlong]

I can find the include, QtQml/private and QtCore/private, both in windows and debian :
win7

debian 8.4:

[SGaist]

Hi and welcome to devnet,

Did you also install qtdeclarative5-dev ?

[jiancaiyang]

Hey, wyou can build the source by Qt sources on website, do not rely much on apt.

[Vevinlong]

@SGaist Yeah, it's already installed.

[Vevinlong]

@jiancaiyang 哇，大神，是这样的，我基于树莓派做的软件想要使用qt的升级框架，去下载的时候发现官方预先编译的linux版的只有桌面的，没有arm版的，下载源码编译的时候就报这个错，找不到qml-private，和core-private

[jiancaiyang]

You could compile Qt yourself, using Yocto or other, try download.qt.io. the source of software maintained by apt are usually out-of-date.
A
You can read instructions by colleagues who has successfully compiled Qt for strawberry-PI.

[Vevinlong]

@jiancaiyang I've native built Qt on Pi, hope it will work, thank you so much.

[Christian Gagneraud]

I had the same issue on KUbuntu 18.04, and solved it by installing the qtdeclarative5-private-dev package.