KF5 can be installed in /usr
or
/opt/kf5
. The BLFS editors recommend
the latter in the BLFS environment.
One option is to install KDE Frameworks
5 into the /usr
hierarchy.
This creates a simpler setup but makes it more difficult to try
multiple versions of KDE
Frameworks.
export KF5_PREFIX=/usr
It is a good idea to add the following variables to your system or personal profiles:
cat >> /etc/profile.d/qt5.sh << "EOF"# Begin kf5 extension for /etc/profile.d/qt5.sh pathappend /usr/lib/plugins QT_PLUGIN_PATH pathappend $QT5DIR/lib/plugins QT_PLUGIN_PATH pathappend /usr/lib/qt5/qml QML2_IMPORT_PATH pathappend $QT5DIR/lib/qml QML2_IMPORT_PATH # End extension for /etc/profile.d/qt5.sh
EOF cat > /etc/profile.d/kf5.sh << "EOF"# Begin /etc/profile.d/kf5.sh export KF5_PREFIX=/usr # End /etc/profile.d/kf5.sh
EOF
If qt5 was installed in
/usr
, the $QT5DIR/lib/
portions of the above paths may
need to be changed to $QT5DIR/lib/qt5/
.
Additionally, if Sudo-1.9.13p1 is installed, these variables
should be available to the super user. Execute the following
commands as the root
user:
cat >> /etc/sudoers.d/qt << "EOF"Defaults env_keep += QT_PLUGIN_PATH Defaults env_keep += QML2_IMPORT_PATH
EOF cat >> /etc/sudoers.d/kde << "EOF"Defaults env_keep += KF5_PREFIX
EOF
A method of building multiple versions installs KDE Frameworks 5 in the /opt
hierarchy:
export KF5_PREFIX=/opt/kf5
If you are not installing KDE Frameworks
5 in /usr
, you will need to
make some additional configuration changes. Best practice is to add
those to your system or personal profile:
cat > /etc/profile.d/kf5.sh << "EOF"# Begin /etc/profile.d/kf5.sh export KF5_PREFIX=/opt/kf5 pathappend $KF5_PREFIX/bin PATH pathappend $KF5_PREFIX/lib/pkgconfig PKG_CONFIG_PATH pathappend $KF5_PREFIX/etc/xdg XDG_CONFIG_DIRS pathappend $KF5_PREFIX/share XDG_DATA_DIRS pathappend $KF5_PREFIX/lib/plugins QT_PLUGIN_PATH pathappend $KF5_PREFIX/lib/plugins/kcms QT_PLUGIN_PATH pathappend $KF5_PREFIX/lib/qml QML2_IMPORT_PATH pathappend $KF5_PREFIX/lib/python3.11/site-packages PYTHONPATH pathappend $KF5_PREFIX/share/man MANPATH # End /etc/profile.d/kf5.sh
EOF cat >> /etc/profile.d/qt5.sh << "EOF"# Begin Qt5 changes for KF5 pathappend /usr/lib/plugins QT_PLUGIN_PATH pathappend $QT5DIR/plugins QT_PLUGIN_PATH pathappend $QT5DIR/qml QML2_IMPORT_PATH # End Qt5 changes for KF5
EOF
Expand your /etc/ld.so.conf
file:
cat >> /etc/ld.so.conf << "EOF"
# Begin KF5 addition
/opt/kf5/lib
# End KF5 addition
EOF
Several KDE Frameworks 5 and
KDE Plasma 5 packages install
files into D-Bus, Polkit, and systemd directories. When installing
KDE 5 in a location other than
/usr
, D-Bus, Polkit, and systemd need to be able to find these files.
The easiest way to achieve this is to create the following symlinks
(as the root
user):
install -v -dm755 $KF5_PREFIX/{etc,share} && ln -sfv /etc/dbus-1 $KF5_PREFIX/etc && ln -sfv /usr/share/dbus-1 $KF5_PREFIX/share && ln -sfv /usr/share/polkit-1 $KF5_PREFIX/share && install -v -dm755 $KF5_PREFIX/lib && ln -sfv /usr/lib/systemd $KF5_PREFIX/lib
Some packages may also install icons from the "hicolor" icon set.
Since that icon set is used by many packages, it is a good idea to
create a symlink to the one in /usr/share
to avoid having multiple installations
of hicolor-icon-theme-0.17. Run the
following commands as the root
user:
install -v -dm755 $KF5_PREFIX/share/icons && ln -sfv /usr/share/icons/hicolor $KF5_PREFIX/share/icons
Sometimes, the installation paths are hardcoded into installed
files. This is the reason why /opt/kf5
is used as installation prefix instead
of /opt/kf5-5.103.0
. After
installing KDE Frameworks, you
may rename the directory and create a symlink:
mv /opt/kf5{,-5.103.0} ln -sfv kf5-5.103.0 /opt/kf5
Later on, you may want to install other versions of KDE Frameworks 5. To do that, just remove
the symlink and use /opt/kf5
as the
prefix again. Which version of KDE
Frameworks 5 you use depends only on where the symlink
points. No other reconfiguration will be needed.