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034d88c4e2
In lastest Qt versions linux-* mkspec doesn't match android anymore, this was triggering a compilation error as DATA_DIR was not defined the RsAccountsDetail::PathDataDirectory(bool check) code has been rearranged so it works reasonably also on Android and do not depend on DATA_DIR define anymore Updated Android compiling documentation
118 lines
5.1 KiB
Plaintext
118 lines
5.1 KiB
Plaintext
Compile Retroshare for Android
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==============================
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Compiling an application for Android is not as easy as one would imagine,
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expecially one like RetroShare that has a big codebase and is not well
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documented. This document is aimed to empower the reader so she can hopefully
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succed or at least have a significant help in compiling her own RetroShare APK
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installable on Android.
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== Preparing The Environement
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First of all setup your Qt for Android development environement following the
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guide on the link:http://doc.qt.io/qt-5/androidgs.html[Qt for android web site].
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At this point you should have Android SDK, Android NDK, and Qt for Android
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working fine, and you should be capable of executing on an Android emulator or
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on your Android phone Qt for Android examples.
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But RetroShare is not as simple to compile as those examples. The good news is
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that Android NDK ships all the necessary to build a custom toolchain that is
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suitable to build RetroShare.
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In order to build the toolchain with needed libraries RetroShare provides the
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+android-prepare-toolchain.sh+ script; before you execute it you should define
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some variables the script cannot determine in an easy and reliable manner by
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itself in your terminal.
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[source,bash]
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-------------------------------------------------------------------------------
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## The path where Android NDK is installed in your system
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export ANDROID_NDK_PATH="/opt/android-ndk/"
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## The path where your fresh compiled toolchain will be installed, make sure
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## the parent exists
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export NDK_TOOLCHAIN_PATH="${HOME}/Builds/android-toolchains/retroshare-android/"
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## The CPU architecture of the Android device you want to target
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export ANDROID_NDK_ARCH="arm"
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## The Android API level the Android device you want to target
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export ANDROID_PLATFORM_VER="19"
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## The number of core that yout host CPU have (just to speed up compilation) set
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## it to 1 if unsure
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export HOST_NUM_CPU=1
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./android-prepare-toolchain.sh
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-------------------------------------------------------------------------------
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== Preparing Qt Creator
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Now that your environement is set up you should configure Qt Creator for Android
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following the
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link:http://doc.qt.io/qtcreator/creator-developing-android.html[official guide].
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At the end of this step your Qt Creator should recognize the Android compiler
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and the Qt for Android kit.
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Your Kit is now ready to use. Now you can open RetroShare as a Qt Creator
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project and in the Projects left menu add the newly created kit if not already
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present, so you can select it on the build type selection button down on the
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left.
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As we use a custom toolchain one more step is needed +
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_Qt Creator left pane -> Projects -> Build and Run -> Android SOMESTUFF kit ->
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Build Environement -> Add
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Variable: +NATIVE_LIBS_TOOLCHAIN_PATH+
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Value: +Same value as NDK_TOOLCHAIN_PATH in Preparing The Environement step+
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Some of RetroShare modules like +retroshare-gui+ and +WebUI+ are not available
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on Android so to be able to compile RetroShare without errors you will have to
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go to +
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_Qt Creator left pane -> Projects -> Build and Run -> Android SOMESTUFF kit ->
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Build Steps -> qmake -> Additional arguments_
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and add the following configurations
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[source,makefile]
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-------------------------------------------------------------------------------
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CONFIG+=no_retroshare_gui CONFIG+=no_retroshare_nogui CONFIG+=no_retroshare_plugins CONFIG+=retroshare_android_service CONFIG+=libresapilocalserver CONFIG+=no_libresapihttpserver CONFIG+=retroshare_qml_app
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-------------------------------------------------------------------------------
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WARNING: SQLCipher is not supported yet on RetroShare for Android. This poses a
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major security concern, we are working to fix this ASAP.
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WARNING: Some versions of QtCreator try to find the Android SDK in
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+/opt/android/sdk+. A workaround to this is to make a symbolic link there
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pointing to your SDK installation path, like
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+mkdir -p /opt/android/sdk && ln -s /home/user/android-sdk-linux
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/opt/android/sdk+
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== Quircks
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On some Android devices like +Huawei ALE-L21+ background applications are
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killed when screen is turned off unless they are in the _protected app_ list.
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At moment seems apps developers don't have a way to have the application
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_protected_ by default, unless the phone vendor decide the app is _popular_ so
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the user have to enable _protection_ for RetroShare manually on those mobile
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phones. +
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{empty} +
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To enable enable _protection_: +Android menu -> Settings -> Privacy & security
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-> Protected apps -> RetroShare+ +
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{empty} +
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Other devices may offer similar _features_ please report them.
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== Furter Readings
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- link:http://doc.qt.io/qt-5/android-support.html[]
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- link:https://developer.android.com/ndk/guides/libs.html[]
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- link:retroshare://forum?name=Compiling%20nogui%20for%20android&id=8fd22bd8f99754461e7ba1ca8a727995&msgid=4e0f92330600bba9cf978f384f4b7b2f2ca64eff[]
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- link:retroshare://file?name=Android%20Native%20Development%20Kit%20Cookbook.pdf&size=29214468&hash=0123361c1b14366ce36118e82b90faf7c7b1b136[]
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- link:https://groups.google.com/forum/#!topic/android-developers/srATPaL0aRU[]
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- link:https://stackoverflow.com/questions/31638986/protected-apps-setting-on-huawei-phones-and-how-to-handle-it[]
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