Qt 6.2.4 for QNX710 on Ubuntu 20.04 - Qt version is not properly installed

I tried to build Qt 6.2.4, installed via qt-unified-linux-x64-4.3.0-1-online.run on Ubuntu 20.04 LTS in a Virtual Box.

I installed Qt 6.2.4 in ~/Qt6 for Desktop gcc 64-bit and in source code.

QNX 7.1 is installed in ~/qnx710.

I sourced qnxsdp-env.sh:

$ . ~/qnx710/qnxsdp-env.sh

I added Qt6.2.4, Ninja and CMake to PATH:

$ export PATH=$PATH:~/Qt6/6.2.4/gcc_64/bin
$ export PATH=$PATH:~/Qt6/Tools/Ninja
$ export PATH=$PATH:~/Qt6/Tools/CMake/bin

Copied the qnx.cmake example from https://doc.qt.io/qt-6/building-qt-for-qnx.html#creating-a-toolchain-file-for-qnx

$ cat ~/cmake_support/toolchains/qnx.aarch64le.cmake 
set(CMAKE_SYSTEM_NAME QNX)

set(arch gcc_ntoaarch64le)

set(CMAKE_C_COMPILER qcc)
set(CMAKE_C_COMPILER_TARGET ${arch})
set(CMAKE_CXX_COMPILER q++)
set(CMAKE_CXX_COMPILER_TARGET ${arch})

set(CMAKE_SYSROOT $ENV{QNX_TARGET})

Created a build directory and configured qt:

$ mkdir ~/Qt6/6.2.4/qnx_build
$ cd ~/Qt6/6.2.4/qnx_build
$ cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=~/cmake_support/toolchains/qnx.aarch64le.cmake -DQT_HOST_PATH=~/Qt6/6.2.4/gcc_64 -DCMAKE_INSTALL_PREFIX=~/Qt6/6.2.4/qnx ../Src

Compile and install

$ cmake --build . --parallel && cmake --install .

This all went fine.

Then I tried to add the new Qt Version to Qt Creator, but this fails with Qt version is not properly installed, please run make install. Details: Invalid Qt version.

And of course, once creating a kit, it fails and can't be used.

Any idea how to fix this?

The Qt version was indeed not properly installed.

qmake expects a specific directory for target libraries

$ ~/Qt6/6.2.4/qnx/bin/qmake -v
QMake version 3.1
Using Qt version 6.2.4 in /home/werner/qnx710/target/qnx7/home/werner/Qt6/6.2.4/qnx/lib

So to fix QT Creator, I simply had to create a symbolic link:

$ cd ~/qnx710/target/qnx7
$ mkdir -p home/werner
$ ln -s ~/Qt6 .