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#REDIRECT [[Getting_Started/Build|Building KDE]]
 
{{TutorialBrowser|
 
series=Getting Started|
 
name=Building KDE4 From Source|
 
pre=[[../../Sources/Anonymous_SVN|Anonymous SVN Quickstart Guide]]|
 
next=[[../../Set_up_KDE_4_for_development|Set up KDE 4 for development]]|
 
reading=[http://kdesvn-build.kde.org/ kdesvn-build: The KDE From Subversion Build Tool]<br>[[../../Increased_Productivity_in_KDE4_with_Scripts|Increased Productivity in KDE4 with Scripts]]<br>[[Development/Tutorials/CMake |Introduction to CMake]]<br>[[../KDE4/FreeBSD|FreeBSD notes]]<br>[[../KDE4/Mac OS X|Instructions for Mac OS X]]<br>[[../KDE4/Windows|Instructions for MS Windows]]|
}}
 
== Abstract ==
 
This tutorial shows one way to get KDE from trunk running on Linux/BSD systems. There are also tutorials for [[/FreeBSD|FreeBSD]], [http://www.kdelibs.com/ Windows], [[/Mac OS X|Mac OS X]] and [http://solaris.kde.org/ Solaris]. Throughout the tutorial the bash shell is used.
 
{{warning|Expect a higher risk of build failure '''on Mondays''' when most kdelibs changes are committed. [http://developer.kde.org/~dirk/dashboard/ Dashboard] reports unexpected breakages. You are encouraged to fix failing modules.
}}
 
== Required Software ==
 
The following must be installed first before you can successfully complete this tutorial:
* gcc and g++, preferably version 4.1 or higher
* svn, the subversion revision control client
* pkg-config
* development libraries and headers for X11, OpenGL (mesa-common-dev and libglu1-mesa-dev), libjpeg, libpng, libungif, [http://clucene.sourceforge.net/index.php/Downloads libclucene], [http://download.librdf.org/source/ librdf], libxml2 and libxslt
* the <tt>makeobj</tt> script, which is part of kdesdk. You can install it as part of kdesdk (kdesdk-scripts on Debian) or similar package, or just download it itself from [http://websvn.kde.org/*checkout*/trunk/KDE/kdesdk/scripts/makeobj WebSVN]
* the [http://freedesktop.org/wiki/Software/shared-mime-info shared-mime-info package], which is the freedesktop MIME standard KDE is using now
* [http://boost.org/ boost], needed by kdebase; after compiling and/or installing boost, in order to make cmake aware about its location (FindBoost),  add boost directory (the one containing include subdirectory) to CMAKE_INCLUDE_PATH or set an environment variable called BOOST_ROOT pointing to boost directory.
 
=== Ark Linux ===
In Ark Linux, the build dependencies you need are installed with:
 
<code bash>
apt-get install devel-core libxml-devel libxslt-devel bzip2-devel \
clucene-core-devel librdf-devel shared-mime-info xorg-Mesa-libGL-devel \
subversion boost-devel doxygen giflib-devel dbus-devel openssl-devel \
alsa-lib-devel kdesdk-scripts qt4-devel
</code>
 
If you prefer a graphical interface, select the packages listed above in the "Install Software" tool in Mission Control.
 
This includes installation of CMake, DBus and Qt - you can skip steps 5, 6 and 7.
 
=== Fedora ===
 
Some of the required packages for building KDE4 on Fedora 7 or higher:
 
<code bash>
yum install clucene-core-devel libxml libxml-devel libxslt-devel \
dbus-devel boost-devel bzip2-devel openssl-devel alsa-lib-devel \
redland-devel rasqal-devel raptor-devel hspell-devel aspell-devel \
cups-devel xine-lib-devel
</code>
 
=== Kubuntu and Debian ===
 
In Kubuntu 7.04 (Feisty) and Debian (Testing/Unstable) the build dependencies you need are installed with:
<code bash>
sudo aptitude install build-essential cdbs debhelper cmake \
libxml2-dev libxslt1-dev libbz2-dev libclucene-dev librdf-dev \
shared-mime-info libgl1-mesa-dev libglu1-mesa-dev mesa-common-dev \
libxext-dev libjpeg-dev libpng-dev subversion libsm-dev libxinerama-dev \
libxrender-dev libfontconfig-dev libboost-dev libxcursor-dev doxygen \
libungif4-dev libdbus-1-dev libgpgme11-dev libssl-dev libgpgme11-dev \
libasound2-dev kdesdk-scripts libpth-dev libjasper-dev \
ssh libxine-dev libqimageblitz-dev libqimageblitz4 libglib2.0-dev
</code>
 
In Kubuntu 7.10 (Gutsy) you have to add:
<code bash>
sudo aptitude install dbus-x11
</code>
 
For a fully functional API documentation framework you also need:
<code bash>
sudo aptitude install graphviz
</code>
 
=== openSUSE ===
 
In openSUSE 10.2 and newer, you can install packages using [http://en.opensuse.org/Zypper Zypper]:
<code bash>
sudo zypper install <package-name>
</code>
 
In older releases of SUSE, you can use YaST:
<code bash>
su
yast -i <packagename>
</code>
 
'''Required Packages'''
 
The packages you will need to install are:
<code>
xorg-x11-devel
libxml2-devel
kdesdk3
clucene-core-devel
boost-devel
libjpeg-devel
liblrdf-devel
libpng-devel
libxslt-devel
libredland-devel
Mesa-devel
giflib-devel
subversion
gcc
gcc-c++
gmp-devel (needed to build kdesupport)
strigi-devel (needed to build kdelibs)
gpgme-devel (needed to build kdepimlibs)
</code>
 
'''Optional Packages'''
 
You can skip the manual installation of Qt 4.3, CMake 2.4.6 and DBus by installing the adding the openSUSE Build Service KDE4 Repository to your installation sources.
 
For openSUSE 10.2 and newer do:
<code>
sudo zypper service-add http://software.opensuse.org/download/KDE:/KDE4/openSUSE_10.2 KDE4-102
</code>
 
For older versions of SUSE Linux do:
<code>
su
installation_sources -a http://software.opensuse.org/download/KDE:/KDE4/[YOUR SUSE LINUX VERSION]
</code>
 
Now install the following packages:
<code>
cmake
dbus-1-devel
libqt4-devel
libqca2-devel (needed for building kdesupport)
</code>
 
And for fully functional apidox framework you also need:
<code>
graphviz
</code>
 
CMake binary packages for openSUSE are available from [http://software.opensuse.org/download/devel:/tools:/building/ openSUSE build service].
 
=== Gentoo ===
 
==== Install by hand ====
 
You can use stable ebuilds just remember to sync your portage before you begin.
 
Remember: All commands are executed as root.
 
Required:
 
We need to allow the following keyword masked ebuilds.
<code bash>
echo 'dev-util/cmake' >> /etc/portage/package.keywords
echo 'dev-cpp/clucene' >> /etc/portage/package.keywords
</code>
 
And now need to mask any Clucene versions above 0.9.16a.
 
<code bash>
echo '>dev-cpp/clucene-0.9.16a' >> /etc/portage/package.mask
</code>
 
Make sure you have set the berkdb USE flag for redland, otherwise nepomuk won't work.
 
<code bash>
echo 'dev-libs/redland berkdb' >> /etc/portage/package.use
</code>
 
These are the packages you will need to emerge, I included the update option into the emerge command so you will not re-emerge anything that you might already have installed.
 
<code bash>
emerge -avu 'sys-devel/gcc' \
  'dev-util/subversion' \
  'dev-util/pkgconfig'  \
  'x11-base/xorg-x11' \
  'virtual/glut' \
  'media-libs/mesa' \
  'media-libs/jpeg' \
  'media-libs/libpng' \
  'media-libs/giflib' \
  'dev-cpp/clucene' \
  'dev-util/cppunit' \
  'media-libs/liblrdf' \
  'dev-libs/libxml2' \
  'dev-libs/libxslt' \
  'x11-misc/shared-mime-info' \
  'dev-libs/boost' \
  'dev-util/cmake' \
  'dev-libs/redland' \
  'sys-apps/dbus' \
  'sys-apps/hal' \
  'x11-libs/qt'
</code>
You will also need to emerge either 'kde-base/kdesdk' or kde-base/kdesdk-scripts'.
 
If you emerged DBUS, CMAKE, QT or HAL you may skip those sections respectively.
Good luck!
 
==== Install via portage ====
 
Also you can install the KDE 4 packages directly via
<code bash>
emerge -a <packagename>
</code>
 
To get the things you need, [http://gentoo-wiki.com/TIP_Overlays#Layman install layman] and then pull in the KDE overlay (which contains experimental KDE ebuilds):
<code bash>
layman -a kde
</code>
After this you need to adjust some USE-flags for KDE 4 and tell portage to use the testing KDE 4 ebuilds instead of the stable KDE 3 ones.
 
That way portage will do the dependency tracking for you.
 
Detailed instructions on building KDE 4 in Gentoo via portage can be found in the [http://overlays.gentoo.org/proj/kde/wiki KDE overlay wiki]. They are discussed in the thread [http://forums.gentoo.org/viewtopic-t-530111-postdays-0-postorder-asc-start-0.html KDE 4 monolithic ebuilds].
 
== Create a user account for KDE4 development ==
 
{{Note|
Some people like to have a separate user account for KDE 4 (for instance an old bug deleted files by mistake), and the instructions below were written with that approach.
 
However it is much more efficient to do everything with a single user account, see [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts|Increased Productivity in KDE4 with Scripts]]
for more details.
 
You can still follow the instructions below, but don't put the environment variables in your <tt>.bashrc</tt>, put them in a separate file that you source to switch to the KDE 4 environment.
}}
 
=== Option 1: Command Line ===
<code bash>
useradd -m kde-devel
passwd kde-devel
</code>
 
=== Option 2: Using KControl ===
 
Instead of using the commands above, you can also use the User module in the KDE Control Center if you already have KDE3 installed.
 
=== Setting up the environment ===
 
Copy the {{path|~/.bashrc}} from your normal user account to the new kde-devel account. Next, copy and paste the contents of the [[Getting Started/Increased Productivity in KDE4 with Scripts/.bashrc|example .bashrc]] into {{path|~kde-devel/.bashrc}}. Be sure to comment out the line <tt>alias make=makeobj</tt> if you do not have the <tt>[[Getting Started/Build/KDE4#Required Software|makeobj]]</tt> command available. You will probably also want to modify the path to make sure it doesn't include your kde3 paths. Also if you want to use KDevelop to develop KDE 4 applications you may pass the ''-GKDevelop3'' flag to the ''cmake'' command (to make CMake generate KDevelop project files, it will help to avoid rebuilding in the future, see [[Getting_Started/Set_up_KDE_4_for_development#Setting_up_the_environment|this]]). 
To make it run, you have to open a new bash or to execute
<code bash>
source ~/.bashrc
</code>
 
This will provide access to commands such as <tt>cmakekde</tt> that are used in this tutorial as well as ensure that the proper paths are in place for Qt, KDE and CMake binaries.
 
For more information, please read the [[Getting Started/Increased Productivity in KDE4 with Scripts]] tutorial.
 
=== Switching to the New User ===
Switch to the user kde-devel: (don't forget the dash)
<code bash>
ssh -X kde-devel@localhost
</code>
 
{{Note|
If the ssh command fails, check out the "Launching KDE 4 apps" section of this KDE4 development guide:
 
http://techbase.kde.org/Getting_Started/Set_up_KDE_4_for_development#Launching_KDE_4_apps
}}
 
== The development user's shell ==
 
On some systems a new user is configured by default to use {{path|/bin/sh}}. If this is not the case on your system, you can skip this section. Using {{path|/bin/sh}} can be very inconvenient to work with and you may want to change it to {{path|/bin/bash}} or another shell.
On Ark Linux, you can skip this step - {{path|/bin/sh}} is {{path|bash}} on Ark Linux.
 
=== Option 1: As the kde-devel user ===
 
If you don't have root privileges and your system supports the changing of your own shell with the <tt>chsh</tt> application, then you could try to change your shell to {{path|/bin/bash}} by using:
<code bash>
chsh -s /bin/bash kde-devel
</code>
 
=== Option 2: As the root user ===
 
If your system comes with the <tt>usermod</tt> application you can run the following command as root: <tt>usermod -s /bin/bash</tt>.
 
Another option is to use the <tt>vipw</tt> application as root to safely edit your {{path|/etc/passwd}}. Locate 'kde-devel' in the the file. Change '{{path|/bin/sh}}' at the end of the line to read '{{path|/bin/bash}}', save your changes and exit.
 
The new shell will be started automatically when you log in as the kde-devel user again.
 
== D-Bus ==
QtDBus and KDE are known to work with D-Bus versions 0.62, as well as 0.92 and upwards. Versions 0.60 and 0.61 may work too but are not tested. Versions 0.90 and 0.91 are known not to work. We recommend using post-1.0 release versions (at least 0.94), so consider upgrading if you haven't done so.
 
You may skip this section if you have a recent D-Bus version or if you don't want to upgrade. You probably want to skip building the bindings until/unless you know you will be building HAL (see below).
 
Before running these steps in the recipe, make sure your X11 headers and libraries are available. The configure script run on line 5 of the following instructions should output:
Building X11 code:        yes
 
=== The Recipe ===
 
{{tip|Make sure you did set up your environment correctly as described [[Getting_Started/Build/KDE4#Setting_up_the_environment|above]]. This is necessary for the <tt>cs</tt> and <tt>cb</tt> functions to work.}}
 
cs # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click here to learn more]]
wget http://dbus.freedesktop.org/releases/dbus/dbus-1.0.2.tar.gz
tar -xvzf dbus-1.0.2.tar.gz
cd dbus-1.0.2/
./configure --prefix=$DBUSDIR --localstatedir=/var
make
sudo make install
sudo dbus-uuidgen --ensure
 
cs # see above
wget http://dbus.freedesktop.org/releases/dbus-glib/dbus-glib-0.74.tar.gz
tar -xvzf dbus-glib-0.74.tar.gz
cd dbus-glib-0.74/
./configure --prefix=$DBUSDIR
make
sudo make install
 
=== What's Happening ===
After changing into the source directory (line 1), D-Bus source code is downloaded from freedesktop.org (line 2) and unpacked (line 3). After going into the newly created D-Bus directory (line 4), the build is set up using the supplied {{path|configure}} script (line 5). After building (line 6) and installing (line 7) D-Bus, we use the <tt>dbus-uuidgen</tt> tool to install a machine identification file that allows the bus to start automatically when the desktop session starts (line 8).
 
Note that you need write access to {{path|/var}} for the last two steps. If your system does not have the sudo command, you can use the <tt>su</tt> command instead, e.g. <tt>su -c "make install"</tt>.
 
The steps for building the glib bindings are similar to the above.
 
== CMake ==
Skip this if you have [http://cmake.org/ CMake] >=2.4.5 installed.
You should be able to directly use the binary packages available on the [http://www.cmake.org/HTML/Download.html CMake site]. There are also distribution specific packages available.
 
=== The Recipe ===
<!--'cs' and 'cb' are NOT typos!-->
cs # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click Here to learn more]]
wget http://www.cmake.org/files/v2.4/cmake-2.4.6.tar.gz
tar -zxf cmake-2.4.6.tar.gz
mkdir cmake-build
cd cmake-build
../cmake-2.4.6/bootstrap
make
sudo make install
 
=== What's Happening ===
First, we go back to the <tt>kde-devel</tt> user's source directory (line 1), get the CMake sources (line 2) and unpack them (line 3). We create a directory to build CMake in (line 4) and go into it (line 5). We then run the CMake bootstrap script to set up the CMake build (line 6), then make (line 7) and install it (line 8) using the root user.
 
If your system does not have the <tt>sudo</tt> command, you can instead do <tt>su -c "make install"</tt>.
 
== Qt ==
Next we need to get the Qt4 that is in KDE's source repository. KDE is guaranteed to build against any Qt 4.3. Qt 4.2 and earlier are not supported and will not work. You should use the copy in the KDE Subversion servers. (note: some distros, like Debian, tend to supply Qt with patches from KDE svn applied, so you may want to cheat and use precompiled Qt from your distro)
 
=== The Recipe ===
cd # Note: qt-copy lives in $HOME/qt-copy. See $QTDIR in [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|<font color=red>.bashrc</font>]]
svn checkout svn://anonsvn.kde.org/home/kde/trunk/qt-copy
cd qt-copy
./apply_patches
./configure -qt-gif -no-exceptions -debug -fast \
  -prefix $QTDIR -nomake examples -nomake demos
make -j2
 
# if we don't install, we'll just clear obj files to
# save disk space
if [ $QTDIR = `pwd` ]; then \
find . -name '*.o' -delete ; \
else make install; fi;
 
=== What's Happening ===
We switch back to the <tt>kde-devel</tt> user's home directory (line 1) and download the source code using subversion (svn) from KDE's repository (line 2). After changing into the resulting {{path|qt-copy}} directory (line 3), we run a script that manages the patches that come with <tt>qt-copy</tt> (line 4).
 
Once the patches have been applied, we then set up the build using the <tt>configure</tt> script (line 5-6). The various command line options used are explained in the {{path|qt-copy/README.qt-copy}} file. Finally, we build the minimal requirements for KDE (line 7) and install (line 10) Qt. If install dir is the same as the current dir (line 8), then we just free some space (line 9) instead. If you want all the example and demo applications, you can either build them individually or simply do a <tt>make</tt> from the {{path|qt-copy}} directory.
 
Note that the installation does not require root as it installs Qt locally into {{path|$QTDIR}}. Anyway, installation is only needed if {{path|$QTDIR}} differs from {{path|$HOME/qt-copy}}, which is not the case if you have exactly followed the instructions.
 
=== Troubleshooting ===
If you get "error: X11/Xlib.h: No such file or directory", install the devel package of <tt>xorg</tt> (the actual name may vary between operating systems, for example it is <tt>xorg-dev</tt> on Ubuntu based systems such as Kubuntu).
 
If you get an error in the configure step about missing defines, check the value of <tt>$QMAKESPEC</tt>.  Some distributions set this to point directly to the system-installed Qt.  If <tt>unset QMAKESPEC</tt> solves the problem, you probably want to add it to the <tt>~/.bashrc</tt> script.
 
If you get an error ".pch/debug-shared/QtCore", this is because Qt-4.3 enables precompiled headers if your gcc supports it, but for some reason it doesn't work for you. If you use distcc, configure qt with -no-pch. If you use icecream, update to the latest icecream from svn trunk.
 
Try running any Qt program, like {{program|assistant}}. '''Note:''' You may need to run <tt>xhost +local:kde-devel</tt> as your regular kde3 user to run this application.  If it crashes in QSpanData::adjustSpanMethods, then your problem is the oxygen style. Try removing {{path|lib/kde4/plugins/styles/kstyle-oxygen.so}} and {{path|lib/kde4/plugins/styles/oxygen.so}} if they exist in the KDE install prefix.
 
== HAL ==
 
{{tip|You can use qdbusviewer to see if you have org.freedesktop.hal. If not, you might need a newer version of hal. If you have org.freedesktop.hal, you probably don't need to, and don't ''want'' to, roll your own HAL.}}
 
If your system requires you to build a newer version of HAL, there's a decent chance you'll need to build other stuff as well, some of which may not be straight forward. Since this should only be required for older distros, instructions are on [[Getting_Started/Build/HAL| a separate page]].
 
== kdesupport ==
 
{{warning|Don't forget to read the [[Getting_Started/Build/KDE4#Setting_up_the_environment|Setting Up The Environment]] section first.}}
 
There are several libraries that KDE applications rely on in the kdesupport module. This includes Strigi and Soprano for file metadata and search, QImageBlitz for image manipulation needed in kdebase, eigen for visual effects in applications such as Kalzium, taglib for music players and qca for some cryptographic needs.
 
Strigi itself has a few dependencies as well: you will need the libraries and headers for libz, libbz2, openssl (libcrypto or libssl), libclucene (>=0.9.16a but watch out: version 0.9.17 does '''not''' work), and either libxml2 or libexpat.
 
=== The Recipe ===
<!--'cs' and 'cb' are NOT typos!-->
cs # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click here to learn more]]
svn checkout svn://anonsvn.kde.org/home/kde/trunk/kdesupport/
cd kdesupport
cmakekde
 
=== What's Happening ===
We change to the base source directory (line 1). We download the sources in kdesupport using subversion (line 2), go into the new {{path|~/kde/src/kdesupport}} directory (line 3), and commence the build (line 4). This will leave us in the kdesupport build directory after the build is completed.
 
=== Troubleshooting ===
If you get
  cmakekde: command not found
then you have to go manualy into the kdesupport directory in ~ and execute the command cmakekde. if this still doesnt work, then something is wrong with your bashrc.
 
If you get
CMake Error: This project requires some variables to be set,
and cmake can not find them.
Please set the following variables:
LIBXML2_INCLUDE_DIR (ADVANCED)
you should install the development package for libxml2.
 
If you get
CMake Error: Could NOT find REDLAND
then you need librdf from the Redland.
If your distribution does not provide the librdf package, you can download the source there: [http://download.librdf.org/source/ http://download.librdf.org/source/] and build it.
(Gentoo users: The ebuild for librdf is named dev-libs/redland)
 
If you get
Fetching external item into 'kdesupport/admin'
Error validating server certificate for 'https://...'
see [http://techbase.kde.org/Getting_Started/Sources/Using_Subversion_with_KDE Using Subversion with KDE]
 
If you get
FILE cannot create directory: /usr/lib[64]/qt4/plugins/crypto. Maybe need administrative privileges.
- - -
make: *** [install] Error 255
take a second look in the .bashrc file described above, are paths correct?  Alternatively, you may see this error if you decided to use a distribution installed version of qt4 and skipped the Qt install above.  Either install qt-copy as describe above, or "sudo make install". If you use "sudo make install", make sure you that you change the ownership back to your user for some of the ~/kde subdirectories that were effected by using sudo (ie. "<tt>sudo chown -R kde-devel:kde-devel ~/kde</tt>").
 
== kdelibs ==
 
We can now move on to building KDE's base libraries.
 
=== The Recipe ===
cd 
cs # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click here to learn more]]
mkdir KDE && cd KDE
svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdelibs
cd kdelibs
cmakekde
 
=== What's Happening ===
We change to the base source directory (line 1) then make and go into the KDE directory (line 2). We download the sources for kdelibs using subversion (line 3), go into the new {{path|~/kde/src/KDE/kdelibs}} directory (line 4), and commence the build (line 5). This will leave us in the <tt>kdelibs</tt> build directory after the build is completed.
 
{{tip|There might be missing dependencies on your system! They are easily overlooked in the output of <tt>cmakekde</tt>.
You might want to do a <tt>cmake $KDE_SRC/KDE/MODULE_NAME</tt> prior to compiling any kde modules (like kdelibs, kdepimlibs etc.)}}
 
=== Additional KDE-specific CMake modules ===
There are additional CMake modules in {{path|kdelibs/cmake/modules/}} that are necessary for building KDE4 applications. These will be installed for you when  kdelibs itself is installed.
 
=== Troubleshooting ===
If you have problems compiling kdelibs, first make sure the software in the [[Getting_Started/Build/KDE4#Required_Software|Required Software]] section above is installed and works. Other possible hints include:
* If the <tt>cmakekde</tt> command fails stating that CMake requires an out of source build directory, remove {{path|~/kde/src/KDE/kdelibs/CMakeCache.txt}}, and try again.
 
If <tt>cmakekde</tt> still gives the same error then try this
cd
cmake -DCMAKE_INSTALL_PREFIX=$KDEDIR \
-DCMAKE_BUILD_TYPE=debugfull \
-DKDE4_BUILD_TESTS=ON \
~/kde/src/KDE/kdelibs
make
make install
* If you received an error stating "Please create a separate build directory and run 'cmake path_to_kdelibs [options]' there.", then you need to change to your build directory before running cmakekde. (e.g <tt>cs KDE/kdelibs && cb && cmakekde</tt>) If the message stays, run 'svn status' in the kdelibs directory and remove all files labeled with '?'.
* If Qt wasn't found or the wrong version of Qt was found, make sure that the qmake from the Qt you need is the first qmake in the path.
* If qmake wasn't found and you are using Debian packages, /usr/bin/qmake probably points to a wrong qmake version. To fix this run as root:
update-alternatives --config qmake
* If the problems persist, try the CMake make-option <tt>--keep-going</tt>.
* Here you need the libungif library, otherwise you will get an error message like "<tt>Could NOT find GIF</tt>".
* Qt-4.3 upgrade: if you get a link error in kjsembed talking about QScriptEngine, edit CMakeCache.txt in kdelibs and remove the lines that talk about QT_QTUITOOLS_LIBRARY, then type make again (that static library has a new dependency, and the cmake code that adds it needs to run).
* if you get <code>CMake Error: KDE Requires Qt to be built with SSL support
</code>, install openssl-devel, remove CMakeCache.txt and re-compile QT.
* if you get <code>kdelibs/kimgio/ico.cpp:188: undefined reference to `QImage::jumpTable()'</code> it means you compiled QT without QT3 support(no, linking to a true QT3 install won't work)
 
== kdepimlibs ==
After <tt>kdelibs</tt>, but before ''kdebase'', you need to build and install ''kdepimlibs''.
 
=== The Recipe ===
<!--'cs' and 'cb' are NOT typos!-->
cs KDE # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click here to learn more]]
svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdepimlibs
cd kdepimlibs
cmakekde
 
=== What's Happening ===
We go into the KDE source directory (line 1), download the source code for kdepimlibs using subversion (line 2) and then go into the new {{path|~/kde/src/KDE/kdepimlibs}} directory (line 3). We then commence the build (line 4). This will leave us in the <tt>kdepimlibs</tt> build directory after the build is completed.
 
=== Troubleshooting ===
If you have trouble compiling kdepimlibs:
* the cmakekde command may require a later version of the gpgme library.  This is available from the project's web site: http://www.gnupg.org/(en)/download/index.html - please note that the build of gpgme also requires libgpg-error, also available from the same location.  Both libraries are installed by the "./configure", "make" and "sudo make install" sequence, with the gpgme library configured with the additional "--with-gpg-error-prefix" parameter.  You may need to overwrite your existing "/usr/bin/gpgme-config" file with the newer version for the kdepimlibs to pick up the new install.
 
== kdebase ==
kdebase is divided into three parts:
* '''apps'''
:This contains applications like Dolphin or KWrite.
* '''runtime'''
:This contains things needed by every application at runtime, like icons. It is a required dependency for each KDE application, so you have to compile and install this.
* '''workspace'''
:This contains things specific to the KDE desktop, like Plasma or the window manager. Most stuff here depends on X11. You only need it if you want to build a full KDE desktop.
 
You can build all of kdebase at once, which is described in the recipe below. If you only want to build kdebase-runtime, which is the only requirement, you can replace <code bash>cd kdebase</code> with <code bash>cd kdebase/runtime</code> in the recipe below.
 
=== The Recipe ===
<!--'cs' and 'cb' are NOT typos!-->
cs KDE # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click here to learn more]]
svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase
cd kdebase
cmakekde
 
=== Troubleshooting ===
If you have troubles compiling kdebase:
* Make sure you have the <tt>libxss headers</tt> installed. (Usually you got undefined references on xscreensaver objects if you do not have those headers)
* <tt>which meinproc</tt> has to deliver {{path|/home/kde-devel/kde/bin/meinproc}}
* if cmakekde can not find the path of kdepimlibs, edit the file {{path|$KDE_BUILD/KDE/kdebase/CMakeCache.txt}} and manually set <tt>KDEPIMLIBS_INCLUDE_DIR:PATH=$KDE_BUILD/kdepimlibs</tt>
* 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.
* the same for "X11_Xinerama_LIB (ADVANCED)" where you will need the devel package for <tt>xinerama</tt>.
* if you get an error complaining about a missing variable X11_Xrandr_LIB, you need the devel package for libxrandr (libxrandr-devel on ubuntu-systems)
* if you get the error "Please set the following variables: FONTCONFIG_INCLUDE_DIR, FONTCONFIG_LIBRARIES (ADVANCED)", then you need to install  the libfontconfig headers
* if you get the error "CMake Error: This project requires some variables to be set, and cmake can not find them. Please set the following variables: KMETADATA_LIBRARIES", you need to install soprano from kdesupport and to rebuild kdelibs
* if you get the error "‘XserverRegion’ does not name a type" make sure you have libxcomposite headers installed (<tt>libxcomposite-dev</tt> in ubuntu)
* if you get the error "CMake Error: This project requires some variables to be set, and cmake can not find them. Please set the following variables: QT_QTOPENGL_LIBRARY (ADVANCED) ", try editing CMakeCache.txt and setting QT_QTOPENGL_LIBRARY:FILEPATH=/home/kde-devel/qt-copy/lib/libQtOpenGL.so
 
* if you get messages as "KDE4_INSTALL_HANDBOOK() is deprecated. Remove it please. Now all is done in KDE4_CREATE_HANDBOOK." then, either find the files containing the offending line and comment it out manually, or run the following script in ~/kde/src/KDE/kdebase: [http://www.plamadeala.com/files/macros_corrector.sh macros_corrector.sh]. It will just REMOVE the line that has "kde4_create_handbook" in it from all the found files.
 
== Running KDE 4 programs ==
 
You can now run KDE 4 programs (e.g. kwrite) by typing:
ssh -X kde-devel@localhost
kwrite
 
=== Troubleshooting ===
 
* If you get
KUniqueApplication: Cannot find the D-Bus session server
check if you can access the display, e.g. type
xclock
and see if a clock appears on the screen.
 
* If you get something like
Error: standard icon theme "oxygen" not found!
ASSERT: "!isEmpty()" in file /home/kde-devel/qt-copy/include/QtCore/../../src/corelib/tools/qlist.h, line 245
Aborted (core dumped)
You need to install kdebase - see above. It is enough to install the "runtime" directory from kdebase.
 
== Generating local API documentation ==
Although the API documentation for KDE is available online at [http://api.kde.org api.kde.org], it is sometimes useful to have it on your own disk, for example when you want to use [[Getting_Started/Set_up_KDE_4_for_development#KDevelop|KDevelop]] for browsing the documentation or when you are not able to be online all the time.
 
Be aware that generating the API documentation can take several hours and takes almost half a gigabyte of diskspace.
The generation is handled by a script in {{path|kdelibs/doc/api}}, you need <tt>doxygen</tt> to be able to run it.
 
To build the API documentation for kdelibs, type the following:
<!--'cs' and 'cb' are NOT typos!-->
cs KDE/kdelibs # [[Getting_Started/Increased_Productivity_in_KDE4_with_Scripts/.bashrc|'cs' is a bash function, click here to learn more]]
$KDE_SRC/KDE/kdelibs/doc/api/doxygen.sh \
--doxdatadir=$KDE_SRC/KDE/kdelibs/doc/common .
 
Repeat for other modules as desired.<br>
cd <module home>
$KDE_SRC/KDE/kdelibs/doc/api/doxygen.sh \
--doxdatadir=$KDE_SRC/KDE/kdelibs/doc/common .
 
Another, even easier method involves downloading this [[Doxyfile]] to your local system. Then simply change directory to where you want to create the documentation and run
<code bash>
% doxygen /path/to/Doxyfile
</code>
Then review the file {{path|doxygen.log}} to see the doxygen errors and warnings. You'll find the actual documentation in the {{path|apidocs}} subdirectory.
 
== Staying up to date ==
 
In order to keep the kde4 installation up to date, each of the modules installed should be updated periodically. As Monday is the day for big changes in kdelibs, Tuesday may be the best day to do this. For each module checked out, run <tt>svn up</tt> and <tt>make</tt>.
 
For example:
<code bash>
cs kdesupport # cs is not a typo
svn up
cb # cb is not a typo
make -j2 VERBOSE=1 && make install
</code>
 
== Installing a subset of a module ==
 
Many modules in KDE contain a large number of programs which could take a long time to download and compile. In cases where you want to work only on a particular program or programs in a module, it is possible to download and compile particular folders. In some cases, certain folders are required for any build of the module. This is determined in the CMakeLists.txt file of the module. For example the [http://websvn.kde.org/trunk/KDE/kdegames/CMakeLists.txt?view=markup kdegames CMakeLists.txt file] lists:
 
<code>
add_subdirectory(libkdegames)
add_subdirectory(libkmahjongg)
 
macro_optional_add_subdirectory(doc)
macro_optional_add_subdirectory(lskat)
macro_optional_add_subdirectory(katomic)
</code>
 
So, the libkdegames and libkmahjongg directories are required to build any of kdegames. The cmake directory will also usually be required. All the other directories (doc, katomic etc) are optional. They will be built if present on your machine. In this example, we build kmahjongg and kbattleship:
 
<code bash>
cs KDE
svn co -N kdegames # The -N switch performs a non-recursive checkout
cd kdegames
svn up libkdegames # Get required directories
svn up libkmahjongg
svn up cmake
svn up kbattleship # Get optional directories
svn up kmahjongg
cmakekde
</code>
 
== General troubleshooting ==
 
What can happen over time, after some <tt>svn up</tt> commands, is that some of the tools used in the KDE build chain change their output format. For example, <tt>kcfg</tt> files are read by <tt>kconfig_compiler</tt> to produce configuration dialogs. CMake cannot detect those changes, and the compilation might fail. A workaround is to always force a re-generation of all such files:
find $KDE_SRC/KDE/kdebase -name "*.kcfg" | xargs touch
The same applies to <tt>ui</tt> files as produced by Qt designer.
 
== Success! ==
 
You are now ready to start building other svn modules in the same fashion as you built kdebase, running and testing KDE4 or writing your own patches and applications.
 
See the [[Getting Started/Set up KDE 4 for development|Set up KDE 4 for development]] tutorial for how to start KDE 4 applications and how to use KDevelop to work on them.
 
[[Category:Build KDE]]
[[Category:KDE4]]

Latest revision as of 16:34, 20 March 2011

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