Archive:Getting Started/Build/Requirements

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    Getting_Started/Build/KDE4/Prerequisites


    Building KDE4 From Source/Prerequisites
    Tutorial Series   Getting Started
    Previous   [[../|KDE SVN Quickstart Guide]]
    What's Next   [[../|KDE SVN Quickstart Guide]]
    Further Reading   n/a

    Abstract

    Some or all of these packages should be available for installation from your distribution. For ease of installation and upgrading it is a good idea to install distribution packages if a recent enough version is provided. Software required to build KDE4 includes:

    • gcc and g++, preferably version 4.2 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, librdf, libxml2 and libxslt
    • the makeobj script, which is included in kdesdk. You can install it from kdesdk (kdesdk-scripts on Debian) or similar packages, or download at WebSVN
    • the shared-mime-info package, is the freedesktop MIME standard now used in KDE
    • the shared-desktop-ontologies package is required to build and run all Nepomuk semantic desktop/desktop search modules.
    • boost, used by kdebase; after build and/or install, in order to make cmake aware about its location (FindBoost), add the boost directory (which contains the include subdirectory) to CMAKE_INCLUDE_PATH or set a environment variable called BOOST_ROOT that points to the boost directory.
    • DocBook XML DTDs (v4.2) and related XSL stylesheets, used by KDE help system; their packages are available in most distributions

    D-Bus

    D-Bus is the messaging framework used to allow different programs on the system to communicate with each other. It is used by both Qt and KDE.

    Get dbus from your distribution, current stable release is version 1.4. Additionally you will also need dbus-glib. Be sure to also install the corresponding lib- and -devel packages.

    D-Bus 1.4.0 or higher is highly recommended as it fixes a bug when multiple threads access the same session bus. D-Bus 1.2 series should work (aside from that issue) but you should upgrade as soon as feasible.

    CMake

    You need to have CMake >=2.6.4 installed. You should be able to directly use the binary packages available on the CMake site. There are also distribution specific packages available.

    Qt

    Next we need to get Qt4. KDE 4.3 builds against Qt 4.5, however KDE trunk requires Qt 4.6. If you plan to build trunk on an ongoing basis, it is probably easier to track kde-qt, especially as KDE trunk may occasionally require a pre-release version of Qt.

    Most up-to-date distributions will have packages of sufficiently new Qt to build the latest KDE stable branch. Some distributions may even package kde-qt; if so, using it is a viable option. If the distribution you use does not provide packages of the necessary version of Qt, it will be necessary to use the recipe below. More information can be found in the sections of the tutorial specific to each distribution.

    Building qt4.4 with the -no-qt3support option will cause things to break.

    README

    Please read the README.kde-qt file for the necessary Qt configure options as well as currently known issues.

    The Recipe

    cs    # Note: cs is not a typo. See  .bashrc 
    git clone git://gitorious.org/+kde-developers/qt/kde-qt.git qt-kde
    cd qt-kde
    ./configure [copy/paste configure line from README.kde-qt replacing <installdir> with $QTDIR]
    make -j2 # use 'make -j(X+1)' where X is your number of processors, to compile faster
    make install
    

    Note that you need to install Qt and Phonon from Qt and then later to install Phonon KDE from git at the same location. This will ensure you get sounds in Qt-based applications as well as in KDE ones.

    If ./configure produces errors about missing headers, run the following command before trying again: QTDIR=`pwd` bin/syncqt

    Make sure which qmake delivers something out of $QTDIR, e.g.:

    /home/kde-devel/qt-kde/bin/qmake
    

    What's Happening

    We switch back to the kde-devel user's home directory (line 1) and download the source code, KDE branch, from gitorious using git (line 2). After changing into the resulting qt-kde directory (line 3), we then set up the build using the configure script (line 4). The various command line options used are explained in the qt-kde/README.kde-qt file. Finally, we build the minimal requirements for KDE (line 6) and install (line 9) Qt. If install dir is the same as the current dir (line 7), then we just free some space (line 8) instead. If you want all the example and demo applications, you can either build them individually or simply do a make from the qt-kde directory.

    Note that the installation does not require root as it installs Qt locally into $QTDIR. Installation is necessary if $QTDIR differs from the source directory. In the end, we make sure the cmake macro to find the Qt directory will work. It must be able to find qmake in $QTDIR.

    Troubleshooting

    If you get "error: X11/Xlib.h: No such file or directory", install the devel package of xorg (the actual name may vary between operating systems, for example it is xorg-dev on Ubuntu based systems such as Kubuntu).

    If you get an error in the configure step about missing defines, check the value of $QMAKESPEC. Some distributions set this to point directly to the system-installed Qt. If unset QMAKESPEC solves the problem, you probably want to add it to the ~/.bashrc 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 assistant. Note: You may need to run xhost +local:kde-devel as your regular kde3 user to run this application. If it crashes in QSpanData::adjustSpanMethods, then your problem is the oxygen style. Try removing lib/kde4/plugins/styles/kstyle-oxygen.so and lib/kde4/plugins/styles/oxygen.so if they exist in the KDE install prefix.

    Generating local API documentation

    It's nice to have the Qt documentation locally for nice integration with KDevelop, and doing this is really quite easy (also shown in README.kde-qt):

    cd $KDE_SRC/qt-kde
    make docs
    ./config.status
    make install
    

    Note that it is necessary to do this only once, even if you rebuild Qt later.

    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. This, however, should only be required for older distros.

    kdesupport svn dependencies

    Warning
    Don't forget to read the 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.

    Phonon is not in kdesupport anymore but in a git repository.

    Some dependencies moved from svn kdesupport to KDE git repository, see below.

    There is a new dependency: DBusMenu.

    Please remember that if you use openSUSE, you can install the needed packages from the KDE:KDE4 buildservice repository and do not have to bother with fiddling the details below. Skip to the kdelibs section.

    The Recipe

    cs # '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 ~/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 manually into the kdesupport directory in ~ and execute the command cmakekde. if this still doesn't 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/ 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 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? ($QTDIR and $PATH are used to get the QT installation path) 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-kde as describe above, or "sudo make install". If you use "sudo make install", make sure that you change the ownership back to your user for some of the ~/kde subdirectories that were effected by using sudo (ie. "sudo chown -R kde-devel:kde-devel ~/kde").

    If you get a message related to

      target libQtTest.so not found
    

    you may need to recompile qt-kde. This time you should take out

      -nomake demos -nomake examples
    

    from the configure command, so that Qt generates library QtTest.


    If you get

         CMake Error: Qt qmake not found!
    

    Then:

         1) uncomment Qt section in .bashrc script (QTDIR, QT_PLUGINS_DIR,      
               PKG_CONFIG_PATH variable settings).
         2) source ~/.bashrc
         3) cd && cd qt-kde
         4) make confclean
         5) repeat steps for installing Qt (from ./configure line).
         6) retry building kdesupport
    

    If you get

         "CMake Error: Could NOT find BZip2"
    

    then

         sudo apt-get install libbz2-dev
    

    or

         urpmi libbzip2_1-devel
    

    If you get

         message that MySql support cannot be enabled
    

    then

         you need to install corresponding devel package. (libmysqlclient-devel  for SuSe 11.1)
    

    kdesupport Git dependencies

    Automoc

    git clone git://git.kde.org/automoc.git

    Please see http://projects.kde.org/projects/kdesupport/automoc

    Please note that automoc should be built FIRST from git as a kdesupport dependency.

    Attica

    git clone git://git.kde.org/attica.git

    Please see http://projects.kde.org/projects/kdesupport/attica

    Polkit Qt

    git clone git://git.kde.org/polkit-qt-1.git

    If you have polkit >= 0.98 you can build polkit-qt-1 master from the clone above.

    If you have polkit < 0.98 then you still can build polkit-qt-1 but you need to build "polkit-older-than-0.98" branch.

    You can switch to this branch with the following command after the clone:

    git checkout -b polkit-older-than-0.98 origin/polkit-older-than-0.98
    

    kdelibs will then build with either polkit-qt-1

    Please see http://projects.kde.org/projects/kdesupport/polkit-qt-1

    Soprano

    git clone git://git.kde.org/soprano.git

    Please see http://projects.kde.org/projects/kdesupport/soprano

    Akonadi

    git clone git://git.kde.org/akonadi.git

    Please see http://projects.kde.org/projects/kdesupport/akonadi

    Please note that Akonadi should come AFTER Soprano in the build.

    For all the above you build by doing:

    cd <dir> (<dir> being either akonadi, attica, polkit-qt-1 or soprano)
    mkdir build
    cd build
    cmake .. -DCMAKE_INSTALL_PREFIX=$QTDIR -DCMAKE_BUILD_TYPE=debugfull  \-DKDE4_BUILD_TESTS=TRUE
    make 
    make install
    

    RSA Key fingerprint for git.kde.org

    c8:45:ba:89:85:11:78:b5:a4:09:d9:31:f6:7f:7c:79

    Phonon

    Phonon is in gitorious repository. You need to build it as Phonon from Qt is not enough for KDE sound to work.

    The Recipe

    cs # 'cs' is a bash function, click here to learn more
    git clone git://gitorious.org/phonon/phonon.git phonon
    cd phonon
    mkdir build
    cd build
    cmake .. -DCMAKE_INSTALL_PREFIX=$QTDIR -DCMAKE_BUILD_TYPE=debugfull \-DKDE4_BUILD_TESTS=TRUE
    make 
    make install
    

    Note that you need to install this Phonon in the same location than Phonon from Qt i.e. in $QTDIR.

    Troubleshooting

    If you get an error like

    designer: symbol lookup error: /path/to/kde/lib/kde4/plugins/phonon_backend/phonon_xine.so: undefined symbol: _ZN6Phonon12PulseSupport11getInstanceEv

    while running Qt Designer you need to:

    rm $QTDIR/lib/libphonon.so.4

    DBusMenu

    Since the 26th April 2010, DBusMenu is a new dependency for kdebase. You can either get it from http://people.canonical.com/~agateau/dbusmenu/index.html as a tarball (latest is libdbusmenu-qt-0.6.3.tar.bz2) or from its it repository

    The Recipe

    cs # 'cs' is a bash function, click here to learn more
    git clone git://gitorious.org/dbusmenu/dbusmenu-qt.git dbusmenu
    cd dbusmenu
    mkdir build
    cd build
    cmake .. -DCMAKE_INSTALL_PREFIX=$KDEDIR -DCMAKE_BUILD_TYPE=debugfull \-DKDE4_BUILD_TESTS=TRUE
    make 
    make install
    

    Troubleshooting

    You need json to build the tests.

    If your version is not correct, you will lose the context menu for the systray icons.

    Shared-Desktop-Ontologies

    Website: http://sourceforge.net/projects/oscaf/files/

    The Recipe

    cs # 'cs' is a bash function, click here to learn more
    svn co https://oscaf.svn.sourceforge.net/svnroot/oscaf/trunk/ontologies
    cd ontologies
    mkdir build
    cd build
    cmake .. -DCMAKE_INSTALL_PREFIX=$QTDIR -DCMAKE_BUILD_TYPE=debugfull 
    make 
    make install
    

    Next Step

    Once all requirements have been installed it is time to install [[../#kdelibs|kdelibs]]