Guidelines and HOWTOs/Build from source

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Revision as of 14:33, 20 November 2013 by Sandsmark (talk | contribs) (→‎Qt 5: use KDE's mirror for bestest speed)

Build requirements

This section provides information about hard (required) and optional software packages needed to build the KDE Framework.

kdelibs dependencies

  • deb-based distributions (Debian, Ubuntu...):
$ sudo apt-get build-dep qt4-x11
$ sudo apt-get install libbz2-dev libxslt-dev libxml2-dev shared-mime-info oxygen-icon-theme libgif-dev libvlc-dev libvlccore-dev doxygen gperf
  • OpenSuSE: All the necessary dependencies:
$ sudo zypper si -d libqt4
$ sudo zypper in libbz2-devel libxslt-devel libxml2-devel shared-mime-info oxygen-icon-theme giflib-devel vlc-devel doxygen gstreamer-0_10-devel gstreamer-0_10-plugins-base-devel docbook-xml-slides docbook-xsl-stylesheets xcb-util-keysyms-devel
  • Fedora: All the dependencies used for building kdelibs can be installed by running:
$ sudo yum-builddep qt phonon-backend-vlc phonon-backend-gstreamer
$ sudo yum install bzip2-devel libxslt-devel libxml2-devel shared-mime-info oxygen-icon-theme giflib-devel doxygen xcb-util-keysyms-devel perl-Pod-Usage "*xcb*-devel" perl-XML-Parser

Qt 5

To build all of qt5 execute: 

 $ git clone git://anongit.kde.org/qt/qt5.git --branch stable
 $ cd qt5
 $ ./init-repository
 $ ./configure -prefix $PWD/qtbase -opensource -confirm-license -developer-build -nomake tests -nomake examples -dbus -no-separate-debug-info -xcb -qpa xcb -no-gtkstyle
 $ make

To update qt5 later: 

 $ git pull
 $ git submodule update

To switch to stable branch if you had dev branch (now kf5 depends against 5.2) 

$ git checkout stable
$ git pull
$ git submodule update

If you saw changes (i.e. qt5.git got updated since last time), 

 $ ./configure [...same as above...]
 $ make
 $ echo $?    # you should make extra sure that 'make' didn't abort with an error, especially when using -j

Experimental and not officially supported: if you don't have enough time and disk space for all of qt5, you could restrict yourself to separate checkouts of qtbase.git, qtsvg.git and qtx11extras.git, this is enough to build kdelibs frameworks (but not enough for plasma-framework).

NOTE for ArchLinux users: qtwebkit uses python to generate some files, but it uses python2 syntax. So you have to either patch the qtwebkit code or make /usr/bin/python point to /usr/bin/python2. See also https://wiki.archlinux.org/index.php/Python

Runtime setup

To use your new KF5 install prefix (let's call it $KF5) : 

export KF5=<path to your intended frameworks install directory>
export QTDIR=<path to your qt5 sources>/qtbase
export XDG_DATA_DIRS=$KF5/share:$XDG_DATA_DIRS:/usr/share
export XDG_CONFIG_DIRS=$KF5/etc/xdg:$XDG_CONFIG_DIRS:/etc/xdg
export PATH=$KF5/bin:$QTDIR/bin:$PATH
export QT_PLUGIN_PATH=$KF5/lib/plugins:$KF5/lib64/plugins:$KF5/lib/x86_64-linux-gnu/plugins:$QTDIR/plugins:$QT_PLUGIN_PATH
   (lib64 instead of lib, on OpenSUSE and similar)
export QML2_IMPORT_PATH=$KF5/lib/qml:$KF5/lib64/qml:$KF5/lib/x86_64-linux-gnu/qml:$QTDIR/qml

Note that LD_LIBRARY_PATH isn't set. You shouldn't set it, the builtin rpath works magic instead, and if you set it you'll have issues when running tools that use uninstalled libs while building kdelibs (e.g. meinproc, kconfig_compiler...)

To use separate user settings for KF5: 

export XDG_DATA_HOME=$HOME/.local5
export XDG_CONFIG_HOME=$HOME/.config5
export XDG_CACHE_HOME=$HOME/.cache5

To be able to compile other stuff on top of KF5: 

export CMAKE_PREFIX_PATH=$KF5:$CMAKE_PREFIX_PATH

To get more information out of qDebug statements (i.e. make it more like kDebug) : 

export QT_MESSAGE_PATTERN='%{appname}(%{pid})/%{category} %{function}: %{message}'

or even better, to get colors: 

c=`echo -e "\033"`
export QT_MESSAGE_PATTERN="%{appname}(%{pid})/(%{category}) $c\[31m%{if-debug}$c\[34m%{endif}%{function}$c\[0m: %{message}"
unset c

Don't bother with KDEDIR and KDEHOME etc. this stuff isn't used anymore.

Git remote prefix

Let's setup a "kde:" prefix for git commands. Add the following text to your ~/.gitconfig: 

 [url "git://anongit.kde.org/"]
    insteadOf = kde:
 [url "ssh://[email protected]/"]
    pushInsteadOf = kde:

Build KDE Frameworks and its dependencies

Clone kdesrc-build

First you need kdesrc-build, it can be done with the following commands: 

mkdir -p extragear/utils
git clone kde:kdesrc-build extragear/utils/kdesrc-build
ln -s extragear/utils/kdesrc-build/kdesrc-build .

Download the configuration file

At this point,

  1. download http://www.davidfaure.fr/kde/kf5-qt5-kdesrc-buildrc into your source dir
  2. rename it to kdesrc-buildrc

You can use this command: 

wget "http://www.davidfaure.fr/kde/kf5-qt5-kdesrc-buildrc" -O "kdesrc-buildrc"

Adjust the paths

Take a look at those lines in the configuration file you've downloaded: 

  qtdir /d/qt/5/kde/qtbase
  source-dir /d/kde/src/5
  build-dir /d/kde/build/5
  kdedir /d/kde/inst/kde_frameworks

and adjust the paths the way you want.

  • qtdir = where qt5 sources are located
  • source-dir = where KDE Frameworks 5 sources should be downloaded
  • build-dir = where KDE Frameworks 5 should be built
  • kde-dir = your KDE Frameworks 5 installation directory

Build kdesrc-build

Note

Note that this script uses GIT and Bazaar to download the sources, so ensure you have both installed.

You just have to run ./kdesrc-build to build the KDE Frameworks. It is the preferred way of building KDE Frameworks.

If you want you can also do the work by hand following the detailed instructions: Frameworks/Building/Details.

Running unit tests

Unit tests are ran from the build dir of kdelibs-frameworks, you should first cd into it.

You need a separate DBus session because the dbus server needs to have the right value of XDG_DATA_DIRS, in order to find $KF5/share/dbus-1/services for starting services (e.g. kded5). 

eval `dbus-launch`
kdeinit5
make test

Warning: never start a KDE4 application in this separate DBus session, it would conflict with your running KDE4 desktop. Note: KDE_FULL_SESSION=true is needed to make sure that the correct QPA will be loaded.

Many of the tests require an X server, and will pop up windows briefly. An easy way to allow these tests to run without interfering with your normal X session is to do 

xvfb-run -s '-screen 0 1024x768x24' make test

(the -s argument tells Xvfb to set the first screen to be 1024x768 pixels, with a depth of 24; at least one test requires a depth greater than 8).

If you want to publish your test results, instead of "make test" run 

make Experimental

The test results will appear on http://my.cdash.org/index.php?project=kdelibs

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