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# NOTE NOTE NOTE
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# This is a very rough shell script file. Untested, and not intended to run in a single run. Just tells chronological order of necessary commands to compile Android OS on an Arch Linux system.
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# Ref: https://gist.github.com/ssz66666/8422d46eae83ce7240f5547d129bf29c
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# Ref: https://github.com/anbox/anbox/blob/master/docs/build-android.md
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##################
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# Required: aosp-devel packages
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# https://aur.archlinux.org/packages/aosp-devel/
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WORKDIR="${PWD}/aosp"
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rm -rf ${WORKDIR}/out/*
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ln -s /usr/bin/python2 ./python
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export PATH=$PWD:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl
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cd ${WORKDIR}
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# This takes A LOT of time, since ~280GiB must be downloaded.
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# Full Android source code with all commit histories etc. This is not a shallow copy.
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# TODO this manifest file contains old Android version tag. Should be replaced with android-9.0.0_r57 or newer
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# For available versions, see i.e.: https://android.googlesource.com/platform/frameworks/support
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repo init -u https://github.com/anbox/platform_manifests.git -b anbox
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repo sync -j6
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sudo pacman -S repo
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# Check all deps of AUR pkg aosp-devel are installed (/home/fincer/ssd/arch_linux_programs/aosp-devel)
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cd /media/a2ee7134-4f0e-4aa7-a12e-ee2b949fbb0b/
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# Not merged, as of 6th June 2020
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# Audio timing fix:
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# https://github.com/anbox/anbox/pull/1034
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cp -f ./patch_audio01_timing.patch aosp/vendor/patch_audio01_timing.patch
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cp -f ./patch_audio02_pass-messenger.patch aosp/vendor/patch_audio02_pass-messenger.patch
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cp -f ./patch_initcgroups.patch aosp/patch_initcgroups.patch
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# Disable foreground/background activity checks and functionality of built-in Gallery apps for Desktop use
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# Comment onPause and onResume functions and related parts
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# This helps when using multiple apps simultaneosly and playing a video/music track. Originally,
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# playback pauses which is not a wanted feature in desktop Android. In this patch, we disable all relevant code
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# parts which cause this pause.
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cp -f ./patch_gallery2_no-activity-checks.patch aosp/patch_gallery2_no-activity-checks.patch
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cd ${WORKDIR}/vendor/anbox
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patch -Np1 -i ../patch_audio01_timing.patch
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patch -Np1 -i ../patch_audio02_pass-messenger.patch
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cd ${WORKDIR}
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# We don't have several cgroups in native Linux. Avoid unnecessary kernel errors.
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# Disabled 'schedtune' cgroup as it targets Android ARM devices. Reason for it is to
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# add more efficient CPU usage. However, native Linux kernel does not populate
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# cgroup subsystem 'schedtune', and we see complaints about that in dmesg output.
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# This image has modified /init.rc file with commented out lines related to schedtune
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# Additional cgroups have been also commented out in the same file to avoid kernel complaints
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# 'Need name or subsystem set'
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patch -Np1 -i ./patch_initcgroups.patch
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# Already merged, as of 6th June 2020
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# Server side decoration fix:
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# https://github.com/anbox/anbox/pull/1415
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#ln -s patch_serversidedecoration.patch aosp/vendor/patch_serversidedecoration.patch
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patch -Np1 -i ./patch_gallery2_no-activity-checks.patch
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archlinux-java set java-8-openjdk
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cd ${WORKDIR}/
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. build/envsetup.sh
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lunch anbox_x86_64-userdebug
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# Disable JACK
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sed -i -r 's/(ANDROID_COMPILE_WITH_JACK := )true/\1false/' ${WORKDIR}/build/core/combo/javac.mk
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#export ANDROID_JACK_VM_ARGS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx2G"
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# RUN THIS IN SEPARATE SHELL!
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# Jack server must be run during compilation process
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#while true; do
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# sleep 2
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# if [ -f aosp/out/host/linux-x86/bin/jack-admin ]; then
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# aosp/out/host/linux-x86/bin/jack-admin start-server
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# break
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# fi
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#done
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LC_ALL=C make -j$(nproc --ignore 1)
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# Takes ~3 hours to compile with 11 CPU cores
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if [[ $? -eq 0 ]]; then
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rm -f $HOME/.jack-settings
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rm -rf $HOME/.jack-server
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fi
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cd $WORKDIR/vendor/anbox/
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scripts/create-package.sh ${PWD}/../../out/target/product/x86_64/ramdisk.img ${PWD}/../../out/target/product/x86_64/system.img
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# Image will locate at aosp/vendor/anbox/android.img
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# To compile a single element (e.g. a modified system app), use the following (example)
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# cd aosp
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# source build/envsetup.sh
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# mmma packages/apps/Gallery2/
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# For more information:
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# https://elinux.org/Android_Build_System
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# ----------
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# Copy all parts from aosp/out/target/product/x86_64/system/ into unsquashed android.img using rsync
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# Correct ownership of the copied files (chown ...) and squash the files into a new android.img file
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# Stop Anbox container & session managers by issuing
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# sudo systemctl stop anbox-container-manager (stops user session manager automatically)
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# Copy the new image file into /var/lib/anbox/android.img
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# Restart Anbox container & session managers by issuing
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# sudo systemctl start anbox-container-manager.service && sleep 3 && systemctl --user start anbox-session-manager
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