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= KDE Software on Android =
= KDE Software on Android =
Android is currently ''the'' mobile platform regarding market share and number of provided applications. Hence, it is a platform very well suited to increase the availability and usage of applications by the KDE community. In the following, we give an overview of the technical steps required to setup a build system for cross-compiling a Qt5/KF5 based Android application, the necessary steps to deploy it, and a reference list of the porting steps by different applications/people.
Android is currently ''the'' mobile platform regarding market share and number of provided applications. Hence, it is a platform very well suited to increase the availability and usage of applications by the KDE community.


If you enter the field of cross-compiling and Qt on Android for the first time, the best start is to follow our tutorial:
== Contact ==
* [[Android/Tutorial|KDE an Android Tutorial]]
For questions and discussion around KDE software on Android join our [https://matrix.to/#/#kde-android:kde.org Matrix channel] and [https://mail.kde.org/mailman/listinfo/kde-android mailing list].
 
== Getting Applications ==
 
Stable releases for our Android apps are available on [https://play.google.com/store/apps/dev?id=4758894585905287660 Google Play] and [https://f-droid.org/ F-Droid].
 
Nightly test builds can be found in the [[Android/FDroid | Nightly F-Droid repo]].


== Build Environment ==
== Build Environment ==
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# '''[[Android/Environment_via_Container|Use Ready-to-Build Docker Container]]''' - This is the most convenient way to setup a system. It also brings the advantage to have a clear separation between your Linux build system and your cross-compile system; in particularly when you require several cross-compiled libraries for your application.
# '''[[Android/Environment_via_Container|Use Ready-to-Build Docker Container]]''' - This is the most convenient way to setup a system. It also brings the advantage to have a clear separation between your Linux build system and your cross-compile system; in particularly when you require several cross-compiled libraries for your application.
# '''[[Android/Environment|Setup your Build Environment Manually]]''' - This tutorial for setting up the cross-compiling environment requires considerably more time and brings the disadvantage to make no clear separation between your system and the cross-compile environment.
# '''[[Android/Environment|Setup your Build Environment Manually]]''' - This tutorial for setting up the cross-compiling environment requires considerably more time and brings the disadvantage to make no clear separation between your system and the cross-compile environment.
You can also get the binaries from binary-factory.kde.org. Here's some explanation about how it works:
https://community.kde.org/Android/BinaryFactory


== Building==
== Building==
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mkdir marble/build
mkdir marble/build
cd marble/build
cd marble/build
cmake -DCMAKE_PREFIX_PATH=${Qt5_android} -DCMAKE_TOOLCHAIN_FILE=/PATH/TO/ECM/toolchain/Android.cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../export  ..
cmake -DCMAKE_TOOLCHAIN_FILE=/PATH/TO/ECM/toolchain/Android.cmake -DECM_ADDITIONAL_FIND_ROOT_PATH=${Qt5_android} -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../export  ..
make install/strip
make install/strip
</syntaxhighlight>
</syntaxhighlight>
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== Packaging and Deployment of APKs ==
== Packaging and Deployment of APKs ==
{{Note|See ECM Toolchain documentation, to be added here as example}}
 
See [https://api.kde.org/ecm/toolchain/Android.html ECM Android Toolchain] documentation.


= KDE Frameworks 5 & Third Party Libraries =
= KDE Frameworks 5 & Third Party Libraries =
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=== Application specific build instructions: ===
=== Application specific build instructions: ===
* Marble: [https://techbase.kde.org/Projects/Marble/AndroidCompiling build instructions]
* Marble: [[Marble/AndroidCompiling | build instructions]]


=== Blog posts about building for Android (careful: instructions may be outdated) ===
=== Blog posts about building for Android (careful: instructions may be outdated) ===
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* 2015-01 - GCompris Devels: [http://gcompris.net/newsall-en.html#2015-01-06 GCompris is now released on Android]
* 2015-01 - GCompris Devels: [http://gcompris.net/newsall-en.html#2015-01-06 GCompris is now released on Android]
* 2014-06 - Alex Pol: [http://www.proli.net/2014/06/12/kde-software-on-android/ KDE Software on Android]
* 2014-06 - Alex Pol: [http://www.proli.net/2014/06/12/kde-software-on-android/ KDE Software on Android]
= Contact =
If you want to join us the best place is the IRC channel and mailing list:
* [irc://irc.freenode.net/kde-devel #kde-devel] channel on irc.freenode.net (currently no separate channel)
* [mailto:[email protected] [email protected]] mailing list: [https://mail.kde.org/mailman/listinfo/kde-android  subscribe], [http://lists.kde.org/?l=kde-android&r=1&w=2 archives]

Revision as of 21:45, 19 May 2020

KDE Software on Android

Android is currently the mobile platform regarding market share and number of provided applications. Hence, it is a platform very well suited to increase the availability and usage of applications by the KDE community.

Contact

For questions and discussion around KDE software on Android join our Matrix channel and mailing list.

Getting Applications

Stable releases for our Android apps are available on Google Play and F-Droid.

Nightly test builds can be found in the Nightly F-Droid repo.

Build Environment

There are different ways to setup a build environment:

  1. Use Ready-to-Build Docker Container - This is the most convenient way to setup a system. It also brings the advantage to have a clear separation between your Linux build system and your cross-compile system; in particularly when you require several cross-compiled libraries for your application.
  2. Setup your Build Environment Manually - This tutorial for setting up the cross-compiling environment requires considerably more time and brings the disadvantage to make no clear separation between your system and the cross-compile environment.

You can also get the binaries from binary-factory.kde.org. Here's some explanation about how it works:

https://community.kde.org/Android/BinaryFactory

Building

Example: Building Marble

cd /opt/android
git clone kde:marble
mkdir marble/build
cd marble/build
cmake -DCMAKE_TOOLCHAIN_FILE=/PATH/TO/ECM/toolchain/Android.cmake -DECM_ADDITIONAL_FIND_ROOT_PATH=${Qt5_android} -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../export  ..
make install/strip

Note:

  • /PATH/TO/ECM/toolchain/Android.cmake must be replaced with the actual path to toolchain/Android.cmake, if using the docker image it probably is at /opt/android/kde/install/share/ECM/toolchain/Android.cmake
  • make install/strip strips build symbols from the binaries and reduces sizes considerably

Building with KDESRC-BUILD

For building the below mentioned frameworks on Android, you can use the following kdesrc-buildrc config file:

cd /opt/android
git clone git://anongit.kde.org/scratch/cordlandwehr/kdesrc-conf-android.git
mkdir -p extragear/kdesrc-build
git clone git://anongit.kde.org/kdesrc-build extragear/kdesrc-build
ln -s extragear/kdesrc-build/kdesrc-build kdesrc-build
ln -s kdesrc-conf-android/kdesrc-buildrc kdesrc-buildrc
./kdesrc-build extra-cmake-modules frameworks-android

Packaging and Deployment of APKs

See ECM Android Toolchain documentation.

KDE Frameworks 5 & Third Party Libraries

KDE Frameworks 5

  • supported frameworks are listed at [1]

Third Party Libraries

Further References

References:

Application specific build instructions:

Blog posts about building for Android (careful: instructions may be outdated)