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| This article shows how to download, build, install and start KDE 4 from subversion. It consolidates howtos from various sites, e.g.
| | #REDIRECT [[Getting_Started/Build|Building KDE]] |
| [http://developer.kde.org/build/trunk.html the old KDE developer pages]. | |
| This topic shows one way that works. It does not intend to explain the obvious background behind it.
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| You may be interested in: http://kdesvn-build.kde.org/
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| To reduce complexity, we use the bash-shell (standard) throughout the tutorial.
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| == Become the user kde-devel ==
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| useradd kde-devel
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| mkdir /home/kde-devel
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| passwd kde-devel
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| chown kde-devel:kde-devel /home/kde-devel 2>/dev/null || \
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| chown kde-devel:users /home/kde-devel
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| Switch to the user kde-devel: (the dash also changes to the new home directory)
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| su - kde-devel
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| == Set Environment Variables ==
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| You have to add some environment variables - add these lines to your shell's configuration file, e.g. {{path|~/.bashrc}}.
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| export YACC='byacc -d'
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| export QTDIR=$HOME/qt-unstable
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| export KDEDIR=$HOME/kde
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| export KDEDIRS=$KDEDIR
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| export DBUSDIR=$KDEDIR
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| export PKG_CONFIG_PATH=$DBUSDIR/lib/pkgconfig:$PKG_CONFIG_PATH
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| export PATH=$QTDIR/bin:$KDEDIR/bin:$PATH
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| export LD_LIBRARY_PATH=$QTDIR/lib:$KDEDIR/lib:$LD_LIBRARY_PATH
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| ## Uncomment if dbus doesn't work
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| #alias dbusstart="eval `PATH=$DBUSDIR/bin \
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| #$DBUSDIR/bin/dbus-launch --auto-syntax`"
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| function cmakekde { cmake -DCMAKE_INSTALL_PREFIX=$HOME/kde \
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| -DCMAKE_BUILD_TYPE=debugfull $@ && make VERBOSE=1 && make install; }
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| == Check out the software ==
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| svn co svn://anonsvn.kde.org/home/kde/trunk/qt-copy
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| svn co svn://anonsvn.kde.org/home/kde/trunk/KDE/kdelibs
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| wget http://www.cmake.org/files/v2.4/cmake-2.4.3.tar.gz
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| wget http://dbus.freedesktop.org/releases/dbus/dbus-0.94.tar.gz
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| == Build D-Bus ==
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| tar xvfz dbus-0.94.tar.gz
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| cd dbus-0.94/
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| ./configure --disable-qt --disable-qt3 --prefix=$DBUSDIR \
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| --localstatedir=/var && make && make install
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| dbus-uuidgen --ensure
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| == Build Qt ==
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| cd ~/qt-copy && ./apply_patches && \
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| ./configure -qt-gif -no-exceptions -debug -fast \
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| -prefix $QTDIR -qdbus && make && make install
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| == Install CMake ==
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| CMake is the build system tool used in KDE4. It replaced the autotools and libtool based system used in previous versions of KDE due to cross platform and performance issues.
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| Your operating system may provide CMake as an optional package. Check to see if there is a package of cmake 2.4.3 or better available and if so install that. If not, then you can download CMake from the [http://cmake.org/HTML/Download.html CMake download page] and build from source following the instructions below.
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| The default prefix is {{path|/usr/local}}, make sure {{path|/usr/local/bin}} is in your <tt>$PATH</tt>.
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| cd
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| tar zxf cmake-2.4.3.tar.gz
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| mkdir cmake-build
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| cd cmake-build
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| ../cmake-2.4.3/bootstrap
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| make
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| sudo make install
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| == Build kdelibs ==
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| cd
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| mkdir kdelibs-build
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| cd kdelibs-build
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| cmakekde ../kdelibs
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| === Install Additional CMake Modules ===
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| There are additional CMake modules in kdelibs that are necessary for building KDE applications. To install them:
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| cd
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| cd kdelibs/cmake/modules
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| cmake .
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| make install
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| You may need to do the last step as root (e.g. using su or sudo), depending on your system setup.
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| === Troubleshooting ===
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| If you have problems compiling this, first make sure the following commands can be executed: aclocal, autoconf, autoheader, gcc, g++, pkg-config.
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| {{tip|If you get "Could NOT find GIF", install the devel package of <tt>libungif</tt> (the actual name may vary between operating systems).}}
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| If the problems persist, try the make-option <tt>--keep-going</tt>
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| == Build kdepimlibs ==
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| Before ''kdebase'' you need to install ''kdepimlibs''
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| cd
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| svn co svn://anonsvn.kde.org/home/kde/trunk/KDE/kdepimlibs
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| mkdir kdepimlibs-build
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| cd kdepimlibs-build
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| cmakekde ../kdepimlibs
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| == Build kdebase ==
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| You may need kdebase for some kioslaves.
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| cd
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| svn co svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase
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| mkdir kdebase-build
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| cd kdebase-build
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| cmakekde ../kdebase
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| === Troubleshooting ===
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| If you have troubles compiling this:
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| * Make sure you have the <tt>libxss headers</tt> installed. (Usually you got undefined references on xscreensaver objects if you haven't those headers)
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| * <tt>which meinproc</tt> has to deliver {{path|/home/kde-devel/kde/bin/meinproc}}
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| * if cmakekde cannot find the path of kdepimlibs, edit the file /home/kde-devel/kdebase-build/CMakeCache.txt and manually set KDEPIMLIBS_INCLUDE_DIR:PATH=/home/kde-devel/kdepimlibs-build
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| * if you get an error saying "Please set the following variables: X11_XTest_LIB (ADVANCED)", install the devel package of <tt>Xtst</tt>. On some systems, this is packaged separately from <tt>xext</tt> and called <tt>x11proto-xext-dev</tt> or <tt>libxtst-dev</tt>. You may also need to remove the CMakeCache.txt file in the build dir after installing the package.
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| == Start KDE 4 Programs ==
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| To start the desktop environment itself, do:
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| X :1 & export DISPLAY=:1
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| startkde
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| Maybe you are logged in as your normal user (not kde-devel), want to stay in your current environment (KDE 3.5, gnome, whatever) and start a KDE 4 program. To start only kwrite from KDE 4, do:
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| ssh -X kde-devel@localhost
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| kwrite
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| == Using Xephyr for developing inside KDE 3 ==
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| Instead of using a full-blown new virtual X for developing software you can use Xephyr to embed your KDE 4 session into your working KDE 3 environment.
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| Sure you can do this with xnest too, but it cannot handle extensions like Xrender so some people prefer Xephyr over it.
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| If you want to get a minimal KDE session up and running, just launch Xephyr (available in Kubuntu as xserver-xephyr):
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| # Xephyr :1&
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| You can now launch KDE:
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| export DISPLAY=:1
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| /path/to/kde4/bin/startkde-modified &
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| startkde-modified is a copy of the startkde-script which includes the following lines on the top:
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| export KDEDIRS=`kde4-config --prefix`
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| export LD_LIBRARY_PATH=$KDEDIR/lib
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| export PATH=$KDEDIR/bin/:$PATH
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| export KDEHOME=~/.kde4
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| You can also use Xephyr with KDM via the Xdmcp protocol and simply a new KDE 4 session to KDM.
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| On Kubuntu, you can enable it by changing
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| [Xdmcp]
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| # Whether KDM should listen to incoming XDMCP requests.
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| # Default is true
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| Enable=false
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| in {{path|/etc/kde3/kdm/kdmrc}} to
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| [Xdmcp]
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| # Whether KDM should listen to incoming XDMCP requests.
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| # Default is true
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| Enable=true
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| and adjust your {{path|/etc/kde3/kdm/Xaccess}} to allow your local machine access. Additionally you should make sure to set up a port blocking policy on all external interfaces for the Xdmcp port if you are doing this on a laptop or a PC in an untrusted environment.
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| If you are done, simply launch Xephyr:
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| Xephyr -query localhost :1 -host-cursor -screen 1024x768&
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| where <tt>-host-cursor</tt> tries to reuse the host's cursor and <tt>-screen</tt> sets the screen dimensions.
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| == Additional notes: ==
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| http://wiki.kde.org/tiki-index.php?page=KDECMakeIntro
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| [[Category:Build KDE]]
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| [[Category:KDE4]]
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