Ivan Čukić

dr Ivan Čukić

Author of "Functional Programming in C++", KDE developer and Free/Libre software enthusiast

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HowTo: Lancelot Install

Published by Ivan Čukić in the KDE development: Plasma section, on 5 August 2008

Edit: The latest download and installation instructions are located at http://lancelot.fomentgroup.org/download

Since there were a couple of reported problems related to L installation, I decided to write a small how-to. The most peculiar thing was that ‘make install’ didn’t install any binaries. Thanks to the help of Jone Marius Vignes, the problem was hunted down and killed :)**

Prerequisites

Subversion client
Python >=2.5 (needed only at compile time)
Qt4 and KDE 4.1 or trunk development libraries (kdelibs and libplasma)
cmake

Download

If you have the KDE 4.1.x, do the following:

$ svn checkout svn://anonsvn.kde.org/home/kde/branches/work/lancelot/kde4.1-backport lancelot

And if you use the trunk

$ svn checkout svn://anonsvn.kde.org/home/kde/trunk/KDE/kdeplasma-addons/applets/lancelot

Compile and install

Enter the directory that contains the source code (cd lancelot), and do the following:

$ mkdir build
$ cd build
$ cmake ..
   -DCMAKE_INSTALL_PREFIX=`kde4-config --prefix`
   -DCMAKE_BUILD_TYPE=release
$ make && make install

If you plan to send me backtraces of crashes, install the KDElibs, libplasma and Qt with debugging symbols, and replace ‘release’ in above script with ‘debugfull’.

Alternatively, if you have the KDE development environment set up according to the article on the Techbase, just enter the source directory and type cmakekde

Almost there

Now just restart Plasma and add the Lancelot applet to the panel or desktop, or wherever. If the menu doesn’t show up when you click the applet, visit this link Lancelot FAQ: Troubleshooting

Have fun!

Comments:

Ivan Čukić
<div class="ivan"> <b>@Dass</b> I've mentioned this before... somewhere :) But there's no reason not to mention it again.
Lancelot uses the same theming mechanism as Plasma. So, if your Plasma theme includes a theme files needed by Lancelot, L will follow that look. Unfortunately, there are no themes that provide elements needed for L yet.
When L reaches the 1.0 milestone, I'll /port/ a couple of plasma themes - most probably the Oxygen and Aya (and, obviously, my plasma themes such as Slim-Glow and Glaze) </div>
Dass
OT: thanks for your work... is it possible to add the capability of use the same colour of plasma themes? now lancelot seems very beauty but totally different from the rest of kde4 thanks
Markus
Hi. Can't you just set up an openSUSE Build Service? It can generate binaries for many different distros, including Fedora and Ubuntu.
dcrabs
Hi, I tried to compile it several times now but I always get: [ 48%] Building CXX object app/src/CMakeFiles/lancelot-menu.dir/models/OpenDocuments.o In file included from /home/david/build/lancelot/app/src/models/OpenDocuments.cpp:21: /home/david/build/lancelot/app/src/models/OpenDocuments.h:25:37: error: taskmanager/taskmanager.h: No such file or directory
Where can I find the file taskmanager.h? Even google doesn't now it. Is it supposed to be part of kdebase? Thanks, dcrabs
Dass
thanks but for now, can you at least make it good for the default plasma theme? ;-)
Ivan Čukić
<div class="ivan"> <b>@Markus</b> I could do it eventually. L is not for mass usage yet, so the barrier of having to compile it is a benefit.
<b>@dcrabs</b> Yes task manager is in kdebase libraries, just like libplasma.
<b>@dcrabs</b> Well, it depends on what /now/ means :)
ATM, the priority is the code. If I find some spare time, then who knows. I have the vision of what L will look like in the default theme, but have no time to do it right now. </div>
Beojan
When I try to compile the latest kde4.1 svn version, as of 14:25 on August 05 2008, I get a make error about undefined references to Solid::Device::~Device and XOpenDisplay
Burke
Hi :)
Thanks for the HowTo. However, I could'nt get L. to work. CMake makes some problems. Whenever I try to build makefiles I get the following:
[quote] Gameaccount@localhost:~/lancelot/build> cmake .. \ > -DCMAKE_INSTALL_PREFIX='kde4-config --prefix' \ > -DCMAKE_BUILD_TYPE=release -- The C compiler identification is GNU -- The CXX compiler identification is GNU -- Check for working C compiler: /usr/bin/gcc -- Check for working C compiler: /usr/bin/gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done CMake Error at /usr/share/cmake/Modules/FindKDE4.cmake:72 (MESSAGE):
ERROR: cmake/modules/FindKDE4Internal.cmake not found in
/home/Gameaccount/.kde4/share/apps;/usr/share/kde4/apps;/etc/kde4/share/apps
Call Stack (most recent call first):
libs/lancelot/CMakeLists.txt:5 (find_package)

-- Configuring done [/quote]
Any Idea what went wrong?
(I know, your Blog isn't Bugzilla or something, but I guess that way of reporting an error can be useful too for the Development of L.^^)
Thanks :)
Ivan Čukić
<div class="ivan"> <b>@beojan</b> Try cleaning the build. Or even better <b>rm -fR</b> the build directory and start again. You have a linking problem there I suppose.
<b>@Burke</b> You don't have the KDE 4.1 <b>development</b> packages, or at least CMake can not find them. </div>
fengshaun
it's working here, I'm using it now. And it's AWESOME!! thanks for the great work :D compilation went smooth as silk!
scorpio810
i have same problem that beojan (debian unstable) http://debian.pastebin.com/m79b9ee32
Ivan Čukić
<div class="ivan"> <b>@scorpio810</b> I'm on testing so I can't confirm this. The most probable thing is that the linker is not told that it should link to KDE's Solid and XRender.
Could you test whether you can compile Raptor menu? </div>
Jonathan Thomas
For those of you who happen to be in (K)Ubuntu and are having trouble with taskmanager.h, install the kdebase-workspace-dev package.
lordheavy
I've succeed to build it fine on debian sid with experimental packages for kde 4.1;
I've patch CMakeLists.txt in the src dir on line 121: target_link_libraries(plasma_applet_lancelot_part ${PLASMA_LIBS} ${LANCELOT_LIBS} ${KDE4_KIO_LIBS} ${KDE4_SOLID_LIBS} ${X11_Xrender_LIB} ${X11_LIBRARIES} taskmanager)
++
scorpio810
@Ivan Čukić solved with lordheavy it 's run vey fine and is very beauty , thanks Ivan for your great work
Beojan
I'm also running Unstable + Experimental, but all packages available in experimental are running experimental versions (except X11, which has missing drivers in exp version)
I managed to compile the trunk version, but not the KDE4.1 branch version. I am running Exp's KDE packages. Oh well, the features I needed are there.
Ivan Čukić
<div class="ivan"> <b>@Beojan</b> Well, if you compiled the latest trunk successfully, then you have the newer libplasma than that one in 4.1. Didn't know that experimental packages are trunk-based.
<b>@lordheavy</b> Thanks for the patch, I'll see to add it.
<b>@all</b> Thanks for kind words and for testing L.
P.S. <b>Crashes</b> that are occurring sometimes will soon become very rare - one cause for them is fixed (not yet in svn, though) </div>
Silver
I'm trying to compile Lancelot on FreeBSD 6.3, but I get error at the very beginning: [ 1%] Building CXX object libs/lancelot/CMakeFiles/lancelot.dir/Global.o /usr/home/silver/Downloads/install/lancelot/libs/lancelot/Global.cpp: In destructor `Lancelot::Instance::Private::~Private()': /usr/home/silver/Downloads/install/lancelot/libs/lancelot/Global.cpp:96: error: `virtual Lancelot::WidgetGroup::~WidgetGroup()' is private /usr/home/silver/Downloads/install/lancelot/libs/lancelot/Global.cpp:246: error: within this context *** Error code 1
My configure: $ cmake .. -DCMAKE_INSTALL_PREFIX=`/usr/local/kde4/bin/kde4-config --prefix` -- The C compiler identification is GNU -- The CXX compiler identification is GNU -- Check for working C compiler: /usr/bin/gcc -- Check for working C compiler: /usr/bin/gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Looking for Q_WS_X11 -- Looking for Q_WS_X11 - found -- Looking for Q_WS_WIN -- Looking for Q_WS_WIN - not found. -- Looking for Q_WS_QWS -- Looking for Q_WS_QWS - not found. -- Looking for Q_WS_MAC -- Looking for Q_WS_MAC - not found. -- Found Qt-Version 4.4.1 (using /usr/local/bin/qmake-qt4) -- Looking for XOpenDisplay in /usr/local/lib/libX11.so;/usr/local/lib/libXext.so;/usr/local/lib/libXft.so;/usr/local/lib/libXau.so;/usr/local/lib/libXdmcp.so;/usr/local/lib/libXpm.so -- Looking for XOpenDisplay in /usr/local/lib/libX11.so;/usr/local/lib/libXext.so;/usr/local/lib/libXft.so;/usr/local/lib/libXau.so;/usr/local/lib/libXdmcp.so;/usr/local/lib/libXpm.so - found -- Looking for gethostbyname -- Looking for gethostbyname - found -- Looking for connect -- Looking for connect - found -- Looking for remove -- Looking for remove - found -- Looking for shmat -- Looking for shmat - found -- Looking for IceConnectionNumber in ICE -- Looking for IceConnectionNumber in ICE - found -- Found X11: /usr/local/lib/libX11.so -- Looking for include files CMAKE_HAVE_PTHREAD_H -- Looking for include files CMAKE_HAVE_PTHREAD_H - found -- Looking for pthread_create in pthreads -- Looking for pthread_create in pthreads - not found -- Looking for pthread_create in pthread -- Looking for pthread_create in pthread - found -- Found Automoc4: /usr/local/kde4/bin/automoc4 -- Found Perl: /usr/bin/perl -- Performing Test _OFFT_IS_64BIT -- Performing Test _OFFT_IS_64BIT - Success -- Performing Test HAVE_FPIE_SUPPORT -- Performing Test HAVE_FPIE_SUPPORT - Success -- Performing Test __KDE_HAVE_W_OVERLOADED_VIRTUAL -- Performing Test __KDE_HAVE_W_OVERLOADED_VIRTUAL - Success -- Performing Test __KDE_HAVE_GCC_VISIBILITY -- Performing Test __KDE_HAVE_GCC_VISIBILITY - Failed -- Found Phonon: /usr/local/kde4/lib/libphonon.so -- Found Phonon Includes: /usr/local/kde4/include/KDE;/usr/local/kde4/include -- Found KDE 4.1 include dir: /usr/local/kde4/include -- Found KDE 4.1 library dir: /usr/local/kde4/lib -- Found KDE4 kconfig_compiler preprocessor: /usr/local/kde4/bin/kconfig_compiler -- Found automoc4: /usr/local/kde4/bin/automoc4 -- Found Plasma: /usr/local/kde4/lib/libplasma.so -- Found Qt-Version 4.4.1 (using /usr/local/bin/qmake-qt4) -- Found X11: /usr/local/lib/libX11.so -- Found Automoc4: /usr/local/kde4/bin/automoc4 -- Found Perl: /usr/bin/perl -- Found KDE 4.1 include dir: /usr/local/kde4/include -- Found KDE 4.1 library dir: /usr/local/kde4/lib -- Found KDE4 kconfig_compiler preprocessor: /usr/local/kde4/bin/kconfig_compiler -- Found automoc4: /usr/local/kde4/bin/automoc4 Lancelot variables already set -- Found Lancelot include dir: /usr/home/silver/Downloads/install/lancelot/libs/lancelot/.. -- Found Lancelot lib: lancelot -- Found shared-mime-info version: 0.51 -- Found PythonInterp: /usr/local/bin/python2.5 -- Found Python interpreter: /usr/local/bin/python2.5 Plasma UI Compiler (Puck) is located at: /usr/home/silver/Downloads/install/lancelot/tools/puck/puck.py /usr/home/silver/Downloads/install/lancelot/tools/puck/puck.py
/usr/home/silver/Downloads/install/lancelot/app/src/ui/LancelotWindowBase.xml
/usr/home/silver/Downloads/install/lancelot/build/app/src/ui_LancelotWindowBase.h
-- Configuring done -- Generating done -- Build files have been written to: /usr/home/silver/Downloads/install/lancelot/build
samiky
I have a problem compiling Lancelot. cmake works well, but after that I launch 'make command' which crashes at about 25% with following error:
make[2]: *** No rule to make target `kde4-config --prefix/share/dbus-1/interfaces/org.freedesktop.ScreenSaver.xml', needed by `app/src/screensaver_interface.cpp'. Stop. make[1]: *** [app/src/CMakeFiles/lancelot-menu.dir/all] Error 2 make: *** [all] Error 2
Robsam2000
Hi, When i am trying to install it,the first command: export KDESVN=svn://anonsvn.kde.org/home/kde is ok,but the second
svn co $KDESVN/trunk/KDE/kdeplasma-addons/applets/lancelot
it is giving me, svn: Unknown hostname 'anonsvn.kde.org' can you help me,how to solve this?
Ivan Čukić
<b>@Robsam2000</b> Well it's either a network problem, or the anonsvn server was out. I'll soon make a source package and post it on the sourceforge.
analogtek
I really like and enjoy Lancelot. I have one question. Will lancelot be ported to KDE 5 and up?
Ivan Čukić
I hope I'll manage to do it at some point, but unfortunately I do not see it in the near future :(
Lukas Uher
it's a pity that you can't find some time to port Lancelot to KDE5 :(
I'm migrating from Debian7 with KDE4 to Kubuntu16 w KDE5 and there is no practically usable launcher here...
Ivan Čukić
I know... sadly, no time and no volunteers to do it for me :)

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