Configuration Information
The /etc/xdg/qtchooser/default.conf
configuration file contains paths to the Qt binaries and libraries which will be used
when the wrapper is run. It is ussually a symlink to a package
specific file, such as 4.conf or
5.conf. In first case, when
invoking the wrappers, Qt4
equivalents will be invoked. In second case, Qt5 equivalents will be invoked.
If both Qt4 and Qt5 are installed in /usr, create the configuration files by running
the following commands as the root user:
install -v -dm755 /etc/xdg/qtchooser &&
cat > /etc/xdg/qtchooser/qt4.conf << "EOF"
/usr/lib/qt4/bin
/usr/lib
EOF
cat > /etc/xdg/qtchooser/qt5.conf << "EOF"
/usr/lib/qt5/bin
/usr/lib
EOF
If both Qt4 and Qt5 are installed in /opt, create the configuration files by running
the following commands as the root user:
install -v -dm755 /etc/xdg/qtchooser &&
cat > /etc/xdg/qtchooser/qt4.conf << "EOF"
/opt/qt4/lib/qt4/bin
/opt/qt4/lib
EOF
cat > /etc/xdg/qtchooser/qt5.conf << "EOF"
/opt/qt5/lib/qt5/bin
/opt/qt5/lib
EOF
Replace /opt/qt4 and/or
/opt/qt5 if you used different
prefix.
To set Qt4 as the default, run
the following command as the root
user:
ln -sfv qt4.conf /etc/xdg/qtchooser/default.conf
To set Qt5 as the default, run
the following command as the root
user:
ln -sfv qt5.conf /etc/xdg/qtchooser/default.conf
You can also select default Qt
using an environment variable.
To set Qt4 as the default, run
the following command:
export QT_SELECT=qt4
To set Qt5 as the default, run
the following command:
export QT_SELECT=qt5
![[Warning]](../images/warning.png)