It’s been a long time since I last compiled v8 for arm 7 Android, and honestly, lots of things have changed. No more scons, etc… This is going to be a quick guide on how to compile v8 5.5 for Android on CentOS or Ubuntu. The list of steps is not big, but hold tight.
I use this script regularly, and is updated over the versions. I have recently used it to successfully compile and upgrade my projects to v8 v8.
# Install git: sudo yum install git # Install 32 bit library support (multiarch): sudo yum install glibc-devel.i686 # Install depot tools # Follow instructions here. # Fetch v8 source code. # Use the branch of your choice. In my case latest 5.5 stable. fetch v8 cd v8 git pull git checkout 5.5-lkgr # If in ubuntu, you'll really want to execute: # build/install-build-deps-android.sh # Set android target: # This may take a while. It downloads android tools: sdk+ndk, etc. echo "target_os = ['android']" >> ../.gclient && gclient sync # Generate compilation target: # Change android_arm.release for your favorite folder name, in this # case: out.gn/android_arm.release # # you can have a full list of options by running: # `tools/dev/v8gen.py list -m client.v8.ports` tools/dev/v8gen.py gen -m client.v8.ports -b "V8 Android Arm - builder" android_arm.release # Edit ninja configuration file: # I’d recommend disabling icu support, and set # symbol_level=0 for faster compilation and thinner # output libs. You can get the whole list of # compilation options by executing: # `gn args out.gn/android_arm.release —-list` # # You must also disable distributed compiler goma. # # E.g.: # # v8_enable_i18n_support= false # is_debug = false # symbol_level = 0 # target_cpu = "arm" # enable_goma = false # v8_use_external_startup_data = false # # Optionally set `target_cpu="arm64"` # # for a full argument list, run: # `gn args --list android_arm.release` # vi out.gn/android_arm.release/args.gn # Compile target: # This may take up to 1 hour depending on your setup. # Use a -j value suitable for your system. ninja -C out.gn/android_arm.release -j 4 # Create fat lib files. # You also could add all .* files into one single library. # cd out.gn/android_arm.release/obj mkdir libs cd libs # one lib to rule them all. ar -rcsD libv8_base.a ../v8_base/*.o ar -rcsD libv8_base.a ../v8_libbase/*.o ar -rcsD libv8_base.a ../v8_libsampler/*.o ar -rcsD libv8_base.a ../v8_libplatform/*.o ar -rcsD libv8_base.a ../src/inspector/inspector/*.o # preferred snapshot type: linked into binary. ar -rcsD libv8_snapshot.a ../v8_snapshot/*.o # depending on snapshot options, you should left out # v8_snapshot files and include any of these other libs. ar -rcsD libv8_nosnapshot.a ../v8_nosnapshot/*.o ar -rcsD libv8_external_snapshot.a ../v8_external_snapshot/*.o # source headers, for inspector compilation. mkdir -p src/base/platform cp -R ../../../../src/*.h ./src cp -R ../../../../src/base/*.h ./src/base cp -R ../../../../src/base/platform/*.h ./src/base/platform # copy v8 compilation header files: cp -R ../../../../include ./ # For compilation on Android, always use the same ndk as # `gclient sync` downloaded. # As of the time of this writing it was `ndk r12b` # Enjoy v8 embedded in an Android app
Compile for Android emulator
tools/dev/v8gen.py gen ia32.release # edit out.gn/ia32.release/args.gn, to contain the following: is_debug = false target_cpu = "x86" target_os = "android" v8_enable_i18n_support = false
