Android Build Support

.github/workflows/build-release.yml

@@ -19,6 +19,7 @@ jobs:
     env:
       OS: linux
       ARCH: x86_64
+      TARGET_OS: linux
 
     runs-on: ubuntu-22.04
     steps:
@@ -49,6 +50,7 @@ jobs:
     env:
       OS: macos
       ARCH: aarch64
+      TARGET_OS: macos
 
     runs-on: macos-latest
     steps:
@@ -79,6 +81,7 @@ jobs:
     env:
       OS: linux
       ARCH: aarch64
+      TARGET_OS: linux
 
     runs-on: ubuntu-22.04-arm
     steps:
@@ -114,6 +117,7 @@ jobs:
     env:
       OS: macos
       ARCH: x86_64
+      TARGET_OS: macos
 
     runs-on: macos-15-large
     steps:
@@ -145,6 +149,7 @@ jobs:
       OS: ios
       ARCH: aarch64
       TARGET_ENVIRONMENT: simulator
+      TARGET_OS: ios
 
     runs-on: macos-latest
     steps:
@@ -170,3 +175,35 @@ jobs:
         with:
           allowUpdates: true
           artifacts: libc_v8_${{ env.V8_REVISION }}_${{ env.OS }}_${{ env.TARGET_ENVIRONMENT }}_${{ env.ARCH }}.a
+
+  build-arm64-android:
+    env:
+      OS: android
+      ARCH: arm64
+      HOST_ARCH: x64
+      TARGET_OS: android
+
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: mlugg/setup-zig@v2
+        with:
+          version: ${{ env.ZIG_VERSION }}
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - run: OS=linux zig build get-v8 # We force the OS to linux here b/c android is not supported by get-v8
+      - run: zig build -Doptimize=ReleaseSafe build-v8
+      - run: mv v8/out/${{ env.OS }}/release/obj/zig/libc_v8.a libc_v8_${{ env.V8_REVISION }}_${{ env.OS }}_${{ env.ARCH }}.a
+
+      - name: Upload the build
+        uses: ncipollo/release-action@v1
+        with:
+          allowUpdates: true
+          artifacts: libc_v8_${{ env.V8_REVISION }}_${{ env.OS }}_${{ env.ARCH }}.a

build-tools/build_v8.sh

@@ -35,11 +35,56 @@ fi
 if [ "${OS}" = "ios" ]; then
   EXTRA_ARGS="v8_enable_pointer_compression=false v8_enable_webassembly=false target_environment=\"${TARGET_ENVIRONMENT}\""
 fi
+if [ "${OS}" = "android" ]; then
+  EXTRA_ARGS='
+    clang_use_chrome_plugins = false
+    is_component_build = false
+    use_dummy_lastchange = true
+    use_sysroot = false
+    simple_template_names = false
+    symbol_level = 1
+    use_debug_fission = false
+    v8_embedder_string = "-lightpanda"
+    v8_enable_sandbox = false
+    v8_enable_javascript_promise_hooks = true
+    v8_promise_internal_field_count = 1
+    v8_use_external_startup_data = false
+    v8_imminent_deprecation_warnings = false
+    v8_enable_private_mapping_fork_optimization = true
+    v8_use_zlib = true
+    v8_enable_snapshot_compression = false
+    v8_enable_handle_zapping = false
+    v8_typed_array_max_size_in_heap = 0
+    v8_array_buffer_internal_field_count = 2
+    v8_array_buffer_view_internal_field_count = 2
+    v8_enable_verify_heap = false
+    v8_enable_fuzztest = false
+    v8_enable_v8_checks = false
+    use_relative_vtables_abi = false
+    icu_use_data_file = false
+    v8_enable_temporal_support = false
+    use_llvm_libatomic = false
+    target_os = "android"
+    target_cpu = "arm64"
+    v8_target_cpu = "arm64"
+    is_debug = false
+    v8_enable_pointer_compression=false
+    v8_enable_webassembly=false
+    is_official_build=false
+
+    v8_target_cpu="arm64"
+    v8_enable_pointer_compression=false
+    v8_enable_webassembly=false
+  '
+fi
 
 TARGET_ARCH=${ARCH}
 if [ "${ARCH}" = "amd64" ]; then
   TARGET_ARCH="x64"
 fi
+if [ "${ARCH}" = "aarch64" ]; then
+  TARGET_ARCH="arm64"
+fi
 
 tools/gn \
   --root=src \
@@ -49,7 +94,7 @@ tools/gn \
   --args="
     target_os=\"${OS}\"
     target_cpu=\"${TARGET_ARCH}\"
-    host_cpu=\"${TARGET_ARCH}\"
+    host_cpu=\"${HOST_ARCH}\"
     is_debug=${IS_DEBUG}
     symbol_level=${SYMBOL_LEVEL}
     is_official_build=false ${EXTRA_ARGS}

build-tools/get_v8.sh

@@ -28,35 +28,74 @@ cloneDep() {
   clone $dep_path $2 $dep_commit
 }
 
-if [ -d "src" ]; then
-  warn "v8/src/ already exists, only cloning dependencies"
+if [ "${TARGET_OS}" = "android" ]; then
+  say "setting up Android dependencies"
+
+  # depot_tools are required to get GN/Ninja working with Android
+  if [ ! -d "depot_tools" ]; then
+    say "cloning depot_tools"
+    git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git depot_tools
+  fi
+
+  export PATH=$(pwd)/depot_tools:$PATH
+
+  # Add minimal .gclient for Android builds
+  cat > .gclient <<EOF
+solutions = [
+  {
+    "name": "src",
+    "url": "https://chromium.googlesource.com/v8/v8.git",
+    "deps_file": "DEPS",
+    "managed": False,
+    "custom_deps": {},
+  },
+]
+target_os = ["android"]
+EOF
+
+  # Sync Android-specific deps
+  gclient sync
+
+  pushd src
+    git checkout ${REVISION}
+  popd
+
+  gclient sync
+
+  pushd src
+    ./build/install-build-deps.sh
+  popd
 else
-  say "cloning V8 into v8/src/"
-  git clone --depth=1 --branch ${REVISION} "https://chromium.googlesource.com/v8/v8.git" src
-fi
-
-python3 deps_parse.py src/DEPS > deps.json
-
-cloneDep 'build' 'src/build'
-cloneDep 'third_party/jinja2' 'src/third_party/jinja2'
-cloneDep 'buildtools' 'src/buildtools'
-cloneDep 'tools/clang' 'src/tools/clang'
-cloneDep 'third_party/zlib' 'src/third_party/zlib'
-cloneDep 'third_party/googletest/src' 'src/third_party/googletest/src'
-cloneDep 'third_party/markupsafe' 'src/third_party/markupsafe'
-cloneDep 'third_party/icu' 'src/third_party/icu'
-cloneDep 'third_party/abseil-cpp' 'src/third_party/abseil-cpp'
-cloneDep 'third_party/simdutf' 'src/third_party/simdutf'
-cloneDep 'third_party/highway/src' 'src/third_party/highway/src/'
-cloneDep 'third_party/libc++/src' 'src/third_party/libc++/src'
-cloneDep 'third_party/libc++abi/src' 'src/third_party/libc++abi/src'
-cloneDep 'third_party/llvm-libc/src' 'src/third_party/llvm-libc/src'
-cloneDep 'third_party/fp16/src' 'src/third_party/fp16/src'
-cloneDep 'third_party/fast_float/src' 'src/third_party/fast_float/src'
-cloneDep 'third_party/dragonbox/src' 'src/third_party/dragonbox/src'
-
-# Add an empty gclient_args.gni so gn is happy. gclient also creates an empty file.
-echo "# generated by get_v8.sh" >  src/build/config/gclient_args.gni
-
-say "gettting prebuilt clang binary"
-python3 src/tools/clang/scripts/update.py
+  if [ -d "src" ]; then
+    warn "v8/src/ already exists, only cloning dependencies"
+  else
+    say "cloning V8 into v8/src/"
+    git clone --depth=1 --branch ${REVISION} "https://chromium.googlesource.com/v8/v8.git" src
+  fi
+
+  python3 deps_parse.py src/DEPS > deps.json
+
+  cloneDep 'build' 'src/build'
+  cloneDep 'third_party/jinja2' 'src/third_party/jinja2'
+  cloneDep 'buildtools' 'src/buildtools'
+  cloneDep 'tools/clang' 'src/tools/clang'
+  cloneDep 'third_party/zlib' 'src/third_party/zlib'
+  cloneDep 'third_party/googletest/src' 'src/third_party/googletest/src'
+  cloneDep 'third_party/markupsafe' 'src/third_party/markupsafe'
+  cloneDep 'third_party/icu' 'src/third_party/icu'
+  cloneDep 'third_party/abseil-cpp' 'src/third_party/abseil-cpp'
+  cloneDep 'third_party/simdutf' 'src/third_party/simdutf'
+  cloneDep 'third_party/highway/src' 'src/third_party/highway/src/'
+  cloneDep 'third_party/libc++/src' 'src/third_party/libc++/src'
+  cloneDep 'third_party/libc++abi/src' 'src/third_party/libc++abi/src'
+  cloneDep 'third_party/llvm-libc/src' 'src/third_party/llvm-libc/src'
+  cloneDep 'third_party/fp16/src' 'src/third_party/fp16/src'
+  cloneDep 'third_party/fast_float/src' 'src/third_party/fast_float/src'
+  cloneDep 'third_party/dragonbox/src' 'src/third_party/dragonbox/src'
+
+  # Add an empty gclient_args.gni so gn is happy. gclient also creates an empty file.
+  echo "# generated by get_v8.sh" >  src/build/config/gclient_args.gni
+
+  say "gettting prebuilt clang binary"
+  python3 src/tools/clang/scripts/update.py
+fi