Difference between revisions of "Getting Started/Build/KDE4"

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#REDIRECT [[Getting_Started/Build|Building KDE]]
series=Getting Started|
name=Building KDE4 From Source|
pre=[[../../Sources/Anonymous_SVN|Anonymous SVN Quickstart Guide]]|
next=[[../../Set_up_KDE_4_for_development|Starting a KDE4 Environment and Applications]]|
reading=[[../Unstable_Version/Mac OS X|Instructions for Mac OS X]]<br>[http://kdesvn-build.kde.org/ The KDE From Subversion Build Tool]<br>[[../../Increased_Productivity_in_KDE4_with_Scripts|Increased Productivity in KDE4 with Scripts]]|
== Abstract ==
This tutorial shows one way to get KDE from trunk running. It consolidates info from several places, e.g.
[http://developer.kde.org/build/trunk.html the official KDE developer pages]. The official pages may be updated without this page being updated too, so check there if you have problems.
{{note|Throughout the tutorial the bash shell is used.
Expect a higher risk of build failure Monday when critical changes are implemented. [http://developer.kde.org/~dirk/dashboard/ Dashboard] reports unexpected breakages. You are encouraged to fix failing modules.
== Set up the development user account ==
{{note|Instead of using the command line as described below, you can also use the User module in the KDE Control Center if you already have KDE3 installed.}}
<code bash>
useradd kde-devel
mkdir /home/kde-devel
passwd kde-devel
chown kde-devel:kde-devel /home/kde-devel 2>/dev/null || \
chown kde-devel:users /home/kde-devel
Switch to the user kde-devel: (the dash also changes to the new home directory)
<code bash>
su - kde-devel
== The kde-devel User's Shell ==
On some systems a new user is configured by default to use /bin/sh. If this is not the case on your system, you can skip this section. Using /bin/sh can be very inconvenient to work with and you may want to change it to /bin/bash or another shell.
{{note|To change the user's default shell you will need write access to /etc/passwd. Usually this means running a command as root. See below for a possible way to do this without requiring root privileges, but which will not work in all circumstances.}}
If your system comes with the <tt>usermod</tt> application you can run the following command as root: <tt>usermod -s /bin/bash</tt>.
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 /bin/bash by using <tt>chsh -s /bin/bash your-kde-devel-username</tt>.
Another option is to use the <tt>vipw</tt> application as root to safely edit your /etc/passwd. Locate 'kde-devel' in the the file. Change '/bin/sh' at the end of the line to read '/bin/bash', save your changes and exit.
The new shell will be started automatically when you log in as the kde-devel user again.
== Prepare for software setup ==
Please look also in [[Getting Started/Increased Productivity in KDE4 with Scripts]].
You might first want to copy the {{path|~/.bashrc}} of your normal user account to the new kde-devel account.
Than copy and paste this [[Getting Started/Increased Productivity in KDE4 with Scripts/.bashrc|.bashrc]] to {{path|~/.bashrc}}.
Now either relogin or activate the settings with:
<code bash>
source ~/.bashrc
== Set up D-Bus ==
Skip this if you have D-Bus <nowiki>>=</nowiki>0.93 installed.
<code bash>
wget http://dbus.freedesktop.org/releases/dbus/dbus-1.0.2.tar.gz
tar xvfz dbus-1.0.2.tar.gz
cd dbus-1.0.2/
./configure --disable-qt --disable-qt3 --prefix=$DBUSDIR \
--localstatedir=/var && make && make install
dbus-uuidgen --ensure
== Set up CMake ==
Skip this if you have [http://cmake.org/ CMake] >=2.4.5 installed.
The default prefix is {{path|/usr/local}}, make sure {{path|/usr/local/bin}} is in your <tt>$PATH</tt>.
<code bash>
cd ..
wget http://www.cmake.org/files/v2.4/cmake-2.4.5.tar.gz
tar zxf cmake-2.4.5.tar.gz
mkdir cmake-build
cd cmake-build
sudo make install
== Set up Qt ==
<code bash>
cd ..
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 -qdbus && make && make install
{{tip|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 xorg-devel on ubuntu).}}
== Set up kdelibs ==
If you use the aforementioned [[Getting Started/Increased Productivity in KDE4 with Scripts/.bashrc|.bashrc]] this is were those new functions come in handy:
<code bash>
mkdir KDE && cd KDE
svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdelibs
mkdir KDE
mkdir KDE/kdelibs && cd KDE/kdelibs
=== 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 following commands can be executed: gcc, g++, pkg-config.
{{tip|If you get "Could NOT find GIF", install the devel package of <tt>libungif</tt> (the actual name may vary between operating systems).}}{{tip|In order to avoid compilation problems, GCC should be at least of version 4.1. The minimum supported compiler is not yet determined at the time of writing this.}}{{tip|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 cb KDE/kdelibs && cmakekde)}}
If the problems persist, try the make-option <tt>--keep-going</tt>
== Set up kdepimlibs ==
Before ''kdebase'' you need to install ''kdepimlibs''
<code bash>
cs KDE
svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdepimlibs
cd kdepimlibs
== Set up kdebase ==
You may need kdebase for some kioslaves.
<code bash>
cs KDE
svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase
cd kdebase
=== 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 haven't those headers)
* <tt>which meinproc</tt> has to deliver {{path|/home/kde-devel/kde/bin/meinproc}}
* 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
* 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>.
== 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 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 kdelibs/doc/api, you need ''doxygen'' to be able to run it.
To build the API documentation for kdelibs, type the following:
<code bash>
mkdir apidox
cd apidox
../kdelibs/doc/api/doxygen.sh ../kdelibs/
== 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|Starting a KDE4 Environment and Applications]] tutorial for how to start working on your new KDE4 installation.
== Additional notes ==
* [[Development/Tutorials/CMake |Introduction to CMake]]
[[Category:Build KDE]]

Latest revision as of 16:34, 20 March 2011

This page was last edited on 20 March 2011, at 16:34. Content is available under Creative Commons License SA 4.0 unless otherwise noted.