< Krita
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This guide explains how to build Krita from standard KDE Frameworks 5 packages provided with Debian/Ubuntu.

You must begin with a C++ development toolkit including gcc, git, and cmake.

It is fundamentally similiar to building Calligra, but three differences. I am too lazy to copy all of those instructions into this page, it would be nice if you did it though. =)

Krita's dependencies

The first difference is that Krita's dependencies are different.

sudo apt install.... (drumroll please)

extra-cmake-modules  kdelibs5-dev libkf5archive-dev libkf5completion-dev libkf5config-dev libkf5coreaddons-dev
libkf5guiaddons-dev libkf5i18n-dev libkf5itemmodels-dev libkf5itemviews-dev libkf5widgetsaddons-dev 
libkf5windowsystem-dev libkf5kiocore5 qtbase5-dev libqt5svg5-dev qtdeclarative5-dev libqt5x11extras5-dev 
libqt5opengl5-dev libeigen3-dev libxi-dev libboost-all-dev libopenexr-dev vc-dev libexiv2-dev libgsl0-dev
liblcms2-dev libpoppler-qt5-dev shared-mime-info kde-style-oxygen-qt5


Technically you can get away without each and every one. KIO and QtDeclarative are for Krita Sketch. Poppler is for PDF import. GSL is for the transform tool. Vc is for SIMD accelerated painting. SharedMimeInfo is for determining file types. If you want to build Krita without these features, you can omit the package.


Downloading Krita's repository

The second difference is that Krita's source repository is different.

cd ~/kf5/src               (Or, wherever you want to download the source code)
git clone kde:krita


CMake command

Krita does not use productsets any longer. The Calligra build guide may remove the PACKAGERS_BUILD setting too, since it was related to Vc, which Calligra no longer uses. This will turn off the packagers build, the tests, and the docbook, so that building is faster. RelWithDebInfo build is nearly always good enough for debugging.

cd ~/kf5/build/krita
cmake -DCMAKE_INSTALL_PREFIX=$HOME/kde/inst5 $HOME/kde/src/calligra -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_TESTING=OFF -DPACKAGERS_BUILD=OFF -DBUILD_doc=OFF
make -j12


Other things to note

If you are OK installing in your home folder, with -DCMAKE_INSTALL_PREFIX=~/, you need only one environment variable to run Krita:

export XDG_DATA_DIRS=$HOME/kde/inst5/share:$XDG_DATA_DIRS

If you plan to develop Krita, you can get faster builds with Ninja and Gold Linker. See the Calligra building page above for more information.


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