888a9e56ab
It turns out that the std::filesystem is still not part of the NDK: https://github.com/android/ndk/issues/609 The NDK has the header - but not the c++fs library yet :-( Change-Id: Ic7003f71cd4730b2f34138adea3b09fe92fdbb4a Reviewed-on: https://gerrit.libreoffice.org/82336 Reviewed-by: Jan Holesovsky <kendy@collabora.com> Tested-by: Jan Holesovsky <kendy@collabora.com>
161 lines
6.8 KiB
Text
161 lines
6.8 KiB
Text
The development of this Android app has to be done on Linux, it's currently not possible to
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build the native parts on Windows.
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* Compile LibreOffice master for Android.
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Do this in the folder where you cloned the LibreOffice core (e.g master-android).
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Create an autogen.input file:
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--build=x86_64-unknown-linux-gnu
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--with-android-ndk=/home/$USER/Android/Sdk/ndk-bundle
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--with-android-sdk=/home/$USER/Android/Sdk
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--with-distro=LibreOfficeAndroid
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--enable-sal-log
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Run ./autogen.sh && make
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* Build the POCO for Android
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# clone the poco repository in the same folder where LibreOffice core and online folders are placed.
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git clone https://github.com/pocoproject/poco poco-android
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cd poco-android
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# use the 1.9.1 branch
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git checkout -b poco-1.9.1 origin/poco-1.9.1
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# configure
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./configure --config=Android --no-samples --no-tests --minimal
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# make it
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PATH="$PATH":~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin make -j8 ANDROID_ABI=armeabi-v7a CC=armv7a-linux-androideabi21-clang CXX=armv7a-linux-androideabi21-clang++ SYSLIBS=-static-libstdc++
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# install it to /opt/poco-android
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PATH="$PATH":~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin make -j8 ANDROID_ABI=armeabi-v7a CC=armv7a-linux-androideabi21-clang CXX=armv7a-linux-androideabi21-clang++ SYSLIBS=-static-libstdc++ install INSTALLDIR=/opt/poco-android
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* 64bit POCO for Android
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# checkout the 1.9.1 in a different location and apply the following patch:
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--- a/build/config/Android
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+++ b/build/config/Android
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@@ -21,6 +21,11 @@ TOOL = arm-linux-androideabi
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ARCHFLAGS = -march=armv7-a -mfloat-abi=softfp
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LINKFLAGS = -Wl,--fix-cortex-a8
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else
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+ifeq ($(ANDROID_ABI),arm64-v8a)
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+TOOL = aarch64-linux-android
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+#ARCHFLAGS = -march=armv7-a -mfloat-abi=softfp
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+#LINKFLAGS = -Wl,--fix-cortex-a8
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+else
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ifeq ($(ANDROID_ABI),x86)
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TOOL = i686-linux-android
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ARCHFLAGS = -march=i686 -msse3 -mstackrealign -mfpmath=sse
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@@ -29,6 +34,7 @@ $(error Invalid ABI specified in ANDROID_ABI)
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endif
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endif
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endif
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+endif
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#
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# Define Tools
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# configure as above and make it:
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PATH="$PATH":~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin make -j8 ANDROID_ABI=arm64-v8a CC=aarch64-linux-android21-clang CXX=aarch64-linux-android21-clang++ SYSLIBS=-static-libstdc++
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# install
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PATH="$PATH":~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin make -j8 ANDROID_ABI=arm64-v8a CC=aarch64-linux-android21-clang CXX=aarch64-linux-android21-clang++ SYSLIBS=-static-libstdc++ install INSTALLDIR=/opt/poco-android-64bit
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* Configure the online.git (eg. in online-android folder)
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Don't forget to change --with-lo-builddir in the following:
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./autogen.sh && ./configure CC=~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi21-clang CXX=~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi21-clang++ --host=arm-linux-androideabi --enable-androidapp --with-lo-builddir=/local/libreoffice/master-android --with-poco-includes=/opt/poco-android/include --with-poco-libs=/opt/poco-android/lib --disable-setcap --enable-silent-rules --enable-debug
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* Build the JavaScript, HTML and CSS files also in the online-android folder
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# just run 'make'
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make
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* Build the actual app
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+ Start Android Studio
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+ Open this 'android' subdir as a project
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+ Build from Android Studio (Build -> Make Project)
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== Debugging ==
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To debug the native code in Android Studio, you need the debugging symbols and
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to setup lldb to actually read & use them.
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* Add debugging symbols for the modules you are interested in
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To autogen.input, add something like:
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--enable-symbols="vcl/ desktop/ sal/ svx/ framework/ sfx2/ tools/ cppu/ cppuhelper/ filter/ comphelper/ Library_sw Library_swd Library_swui"
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clean the appropriate modules, like
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make vcl.clean desktop.clean sal.clean svx.clean framework.clean sfx2.clean tools.clean cppu.clean cppuhelper.clean filter.clean comphelper.clean sw.clean
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and rebuild using 'make'.
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* Add android/source/obj/local/armeabi-v7a from core.git as a Symbol Directory
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In Android Studio, choose Run -> Debug... -> Edit Configurations...
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There go to the Android App -> app, choose the Debugger tab, and:
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Debug type: Auto (or Dual)
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Symbol Directories: here add the full path, like
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/local/libreoffice/master-android/android/source/obj/local/armeabi-v7a
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This path contains the non-stripped version of the liblo-native-code.so, and
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the debugger will read the symbols from that one (even if the APK contains
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the stripped version).
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[Alternatively you can add the following to your ~/.lldbinit instead:
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settings set target.inline-breakpoint-strategy always
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settings append target.exec-search-paths /local/libreoffice/master-android/android/source/obj/local/armeabi-v7a
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]
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* To use pretty printers for types like OUString, add the following to your
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~/.lldbinit:
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command script import '/local/libreoffice/master-android/solenv/lldb/libreoffice/LO.py'
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From now on, you will be able to debug directly in the Android Studio
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debugger. Happy debugging!
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== Tip: How to speed up your core.git build ==
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If you use icecream for parallel building, you can use it for
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cross-compilation too.
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# first generate a tarball with the toolchain (once)
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icecc-create-env ~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi21-clang ~/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi21-clang++
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And add it and the paths to the compiler as the first things to the
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autogen.input:
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CC=icecc [here copy what the output of ./autogen.sh without icecream said for C compiler]
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CXX=icecc [here copy what the output of ./autogen.sh without icecream said for C++ compiler]
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ICECC_VERSION=/path/to/the/tarball/generated/above/955ceb546ceb7a5715bf0223ddd788fe.tar.gz
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--with-parallelism=[amount of cpu threads in your icecream farm]
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--enable-icecream
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[...the original autogen.input...]
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So the result will look something like this:
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CC=icecc /home/$USER/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -mthumb -march=armv7-a -mfloat-abi=softfp -mfpu=neon -Wl,--fix-cortex-a8 -gcc-toolchain /home/$USER/Android/Sdk/ndk-bundle/to>
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CXX=icecc /home/$USER/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -mthumb -march=armv7-a -mfloat-abi=softfp -mfpu=neon -Wl,--fix-cortex-a8 -gcc-toolchain /home/$USER/Android/Sdk/ndk-bundle>
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ICECC_VERSION=/local/libreoffice/android/955ceb546ceb7a5715bf0223ddd788fe.tar.gz
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--with-parallelism=25
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--enable-icecream
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--build=x86_64-unknown-linux-gnu
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--with-android-ndk=/home/$USER/Android/Sdk/ndk-bundle
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--with-android-sdk=/home/$USER/Android/Sdk
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--with-distro=LibreOfficeAndroid
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--enable-sal-log
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