Ubuntu 22.04 配置qtchooser默认启用 Qt6

问题现象

In Ubuntu 22.04 there is currently an open bug QtChooser doesnt support qt6.

So even if Qt6 has been installed using sudo apt install qt6-base-dev, qtchooser -l does not list a qt6 option and qmake outputs qmake: could not find a Qt installation of ‘’.

Assuming Qt6 is installed and qmake6 can be called, I believe there are two options:

解决方案

系统解决方案 1. Select Qt6 system-wide

• Generate qt6.conf based on the path to qmake6

qtchooser -install qt6 $(which qmake6)

• Move/copy qt6.conf to system-wide dir

# sudo mv ~/.config/qtchooser/qt6.conf /usr/share/qtchooser/qt6.conf
sudo cp ~/.config/qtchooser/qt6.conf /usr/share/qtchooser/qt6.conf

• Set Qt6 as default option

sudo mkdir -p /usr/lib/$(uname -p)-linux-gnu/qt-default/qtchooser
sudo ln -sf /usr/share/qtchooser/qt6.conf /usr/lib/$(uname -p)-linux-gnu/qt-default/qtchooser/default.conf

当前用户解决方案 2. Select Qt6 for current user only

• Generate qt6.conf based on path to qmake6

qtchooser -install qt6 $(which qmake6)

• Select Qt6 as default (place in ~/.bashrc for persistence):

export QT_SELECT=qt6

参考资料

• https://askubuntu.com/questions/1460242/ubuntu-22-04-with-qt6-qmake-could-not-find-a-qt-installation-of