Beyond Linux® From Scratch - Version 7.4

Chapter 11. General Utilities

qtchooser-31

Introduction to qtchooser

The qtchooser package contains a wrapper used to select between Qt binary versions. It is only needed if both Qt4 and Qt5 are installed for access via the /usr/bin directory.

This package is known to build and work properly using an LFS-7.4 platform.

Package Information

qtchooser Dependencies

Optional

Qt-4.8.5 (for the testsuite)

User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/qtchooser

Installation of qtchooser

[Warning]

Warning

If both Qt4 and Qt5 are installed on the system, then Qt4 should be set as default unless stated otherwise.

Install qtchooser by running the following commands: 

make

To test the results, issue: make check.

Now, as the root user: 

make install &&
install -m644 doc/qtchooser.1 /usr/share/man/man1

Configuring qtchooser

Config Files

/etc/xdg/qtchooser/default.conf

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.

Create the configuration files by running the following commands as the root user: 

install -dm755 /etc/xdg/qtchooser &&
cat > /etc/xdg/qtchooser/4.conf << "EOF"
/usr/lib/qt4/bin
/usr/lib
EOF
cat > /etc/xdg/qtchooser/5.conf << "EOF"
/usr/lib/qt5/bin
/usr/lib
EOF

To set Qt4 as the default, run the following command as the root user: 

ln -sfv 4.conf /etc/xdg/qtchooser/default.conf

To set Qt5 as the default, run the following command as the root user: 

ln -sfv 5.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=4

To set Qt5 as the default, run the following command: 

export QT_SELECT=5

Contents

Installed Programs: assistant, designer, lconvert, linguist, lrelease, lupdate, moc, pixeltool, qcollectiongenerator, qdbus, qdbuscpp2xml, qdbusviewer, qdbusxml2cpp, qdoc, qdoc3, qglinfo, qhelpconverter, qhelpgenerator, qmake, qml1plugindump, qmlbundle, qmlmin, qmlplugindump, qmlprofiler, qmlscene, qmltestrunner, qmlviewer, qtchooser, qtconfig, rcc, uic, uic3, xmlpatterns and xmlpatternsvalidator
Installed Libraries: None
Installed Directories: None

Short Descriptions

qtchooser

is a wrapper used to select between Qt binary versions.

Last updated on 2013-09-07 21:56:57 -0700