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| ==Objectives==
| | #REDIRECT [[Getting Started/Build]] |
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| You probably want to keep your current KDE-3.5.x installation till you feel that KDE-4.x.y meets your needs for actual day to day use of your computer. Yet, you want to be able to change over with a minimum of work when the time comes to make the switch.
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| ==Method==
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| The best way to accomplish this is to install the needed libraries on your system in the usual manner. Convention is that these should be installed in the /usr/local/ directory. By default, Troll Tech installs Qt in: /usr/local/Trolltech/Qt-4/. The current KDE-4.0 release branch should be built against Qt-4.3.x (the latest in this branch is 4.3.3 which should be used unless there are reasons not to use it). It is best to install KDE-4.x.y in its own directory so that the directory can be deleted if some large problem occurs. I will be using /usr/local/KDE-4.0/ but you can call it whatever you want.
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| We will keep configurations straight by using a separate user for accessing KDE-4.x.y. This user account will contain your configurations and will have a script to set the environment variables (.bash_profile if using Linux).
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| ==Installation==
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| ===Create the User Account===
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| Use whatever method you wish to create a new user account. Mine is called: "KDE4". Then edit or create the user specific login script (.bash_profile for Linux). There is a lot that goes into this. Note that this presumes that USER was correctly set by the system login script.
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| <nowiki>------8<------8<------8<------8<------8<------8<------8<------</nowiki>
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| <nowiki>#</nowiki> Redundant setting of HOME as work around for Bash bug
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| HOME=/home/KDE4
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| PATH=$HOME/bin:<nowiki>$</nowiki>PATH export PATH HOME
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| XDG_DATA_HOME="$HOME/.local/share"
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| XDG_CONFIG_HOME="$HOME/.config"
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| export XDG_DATA_HOME XDG_CONFIG_HOME
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| KDEDIR=/usr/local/KDE-4.0
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| KDEHOME=$HOME/.kde4
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| KDETMP=/tmp/$USER-kde4
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| mkdir -p $KDETMP
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| KDEVARTMP=/var/tmp/$USER-kde4
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| mkdir -p $KDEVARTMP
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| KDEDIRS=$KDEDIR
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| PKG_CONFIG_PATH=/usr/local/KDE-4.0/lib/pkgconfig:$PKG_CONFIG_PATH
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| export KDEDIR KDEHOME KDETMP KDEVARTMP KDEDIRS PKG_CONFIG_PATH
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| QTDIR=/usr/local/Trolltech/Qt-4
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| QT_PLUGIN_PATH=$KDEDIR/lib/kde4/plugins:$QT_PLUGIN_PATH
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| PKG_CONFIG_PATH=$QTDIR/lib/pkgconfig:$PKG_CONFIG_PATH
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| export QTDIR QT_PLUGIN_PATH PKG_CONFIG_PATH
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| PATH=$QTDIR/bin:$KDEDIR/bin:$PATH
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| export PATH
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| XDG_CONFIG_DIRS=/usr/local/KDE-4.0/etc/xdg
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| XDG_DATA_DIRS=$KDEDIR/share
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| export XDG_CONFIG_DIRS XDG_DATA_DIRS
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| LD_LIBRARY_PATH=$QTDIR/lib:$KDEDIR/lib
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| export LD_LIBRARY_PATH
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| LIBXCB_ALLOW_SLOPPY_LOCK="true"
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| export LIBXCB_ALLOW_SLOPPY_LOCK
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| <nowiki>------8<------8<------8<------8<------8<------8<------8<------</nowiki>
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| This is in addition to other things that you need in the script which would probably go at the beginning -- this large block of junk is to be added at the end. The XDG directories might need to be modified for your system.
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