For #970 & #1303 : Enable build for aarch64-linux-android & x86_64-linux-android (#1468)

.cargo/config.toml

@@ -1,2 +1,5 @@
 [target.aarch64-linux-android]
-linker = "./third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang++"
+linker = "./third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
+
+[target.x86_64-linux-android]
+linker = "./third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android24-clang++"

.github/workflows/ci.yml

@@ -30,42 +30,72 @@ jobs:
           - os: macOS-latest
             target: x86_64-apple-darwin
             variant: debug
+            cargo: cargo
 
           - os: macOS-latest
             target: x86_64-apple-darwin
             variant: release
+            cargo: cargo
 
           - os: macos-14
             target: aarch64-apple-darwin
             variant: asan
+            cargo: cargo
 
           - os: macos-14
             target: aarch64-apple-darwin
             variant: debug
+            cargo: cargo
 
           - os: macos-14
             target: aarch64-apple-darwin
             variant: release
+            cargo: cargo
 
           - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
             target: x86_64-unknown-linux-gnu
             variant: debug
+            cargo: cargo
 
           - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
             target: x86_64-unknown-linux-gnu
             variant: release
+            cargo: cargo
 
           - os: ${{ github.repository == 'denoland/rusty_v8' && 'windows-2019-xxl' || 'windows-2019' }}
             target: x86_64-pc-windows-msvc
             variant: release # Note: we do not support windows debug builds.
+            cargo: cargo
 
           - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
             target: aarch64-unknown-linux-gnu
             variant: debug
+            cargo: cargo
 
           - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
             target: aarch64-unknown-linux-gnu
             variant: release
+            cargo: cargo
+
+          - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
+            target: aarch64-linux-android
+            variant: debug
+            cargo: cross
+
+          - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
+            target: aarch64-linux-android
+            variant: release
+            cargo: cross
+
+          - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
+            target: x86_64-linux-android
+            variant: debug
+            cargo: cross
+
+          - os: ${{ github.repository == 'denoland/rusty_v8' && 'ubuntu-22.04-xl' || 'ubuntu-22.04' }}
+            target: x86_64-linux-android
+            variant: release
+            cargo: cross
 
     env:
       V8_FROM_SOURCE: true
@@ -113,6 +143,13 @@ jobs:
       - name: Write git_submodule_status.txt
         run: git submodule status --recursive > git_submodule_status.txt
 
+      - name: Install cross and build custom image
+        if: contains(matrix.config.target, 'linux-android')
+        run: |
+          mkdir -p /home/runner/.local/bin
+          curl -qL https://github.com/cross-rs/cross/releases/download/v0.2.5/cross-x86_64-unknown-linux-musl.tar.gz  | tar xz -C /home/runner/.local/bin
+          sudo docker build --build-arg CROSS_BASE_IMAGE=ghcr.io/cross-rs/${{ matrix.config.target }}:0.2.5 -t cross-rusty_v8:${{ matrix.config.target }} .
+
       - name: Cache
         uses: actions/cache@v3
         with:
@@ -175,12 +212,12 @@ jobs:
           SCCACHE_IDLE_TIMEOUT: 0
         if: matrix.config.variant == 'debug' || matrix.config.variant == 'release'
         run:
-          cargo test -vv --all-targets --locked ${{ env.CARGO_VARIANT_FLAG }}
+          ${{ matrix.config.cargo }} test -vv --all-targets --locked ${{ env.CARGO_VARIANT_FLAG }}
           --target ${{ matrix.config.target }}
 
       - name: Clippy
         run:
-          cargo clippy --all-targets --locked ${{ env.CARGO_VARIANT_FLAG }}
+          ${{ matrix.config.cargo }} clippy --all-targets --locked ${{ env.CARGO_VARIANT_FLAG }}
           --target ${{ matrix.config.target }} -- -D clippy::all
 
       - name: Rustfmt

Cross.toml

@@ -1,6 +1,3 @@
-[target.aarch64-linux-android]
-image = "cross:aarch64-linux-android-0.2.1"
-
 [build.env]
 passthrough = [
     "V8_FROM_SOURCE",
@@ -9,3 +6,19 @@ passthrough = [
     "SCCACHE_DIR",
     "SCCACHE_IDLE_TIMEOUT"
 ]
+
+[target.aarch64-linux-android]
+image = "cross-rusty_v8:aarch64-linux-android"
+
+[target.aarch64-linux-android.env]
+passthrough = [
+    "CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=./third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
+]
+
+[target.x86_64-linux-android]
+image = "cross-rusty_v8:x86_64-linux-android"
+
+[target.x86_64-linux-android.env]
+passthrough = [
+    "CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER=./third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android24-clang++"
+]

Dockerfile

@@ -1,8 +1,9 @@
-FROM rustembedded/cross:aarch64-linux-android-0.2.1
+ARG CROSS_BASE_IMAGE
+FROM $CROSS_BASE_IMAGE
 
 RUN apt update && \
     apt install -y curl && \
-    curl -L https://github.com/mozilla/sccache/releases/download/v0.2.15/sccache-v0.2.15-x86_64-unknown-linux-musl.tar.gz | tar xzf -
+    curl -L https://github.com/mozilla/sccache/releases/download/v0.7.7/sccache-v0.7.7-x86_64-unknown-linux-musl.tar.gz | tar xzf -
 
 ENV TZ=Etc/UTC
 COPY ./build/*.sh /chromium_build/
@@ -10,11 +11,12 @@ RUN \
 	DEBIAN_FRONTEND=noninteractive \
 	ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone \
 	&& apt-get update && apt-get install -y lsb-release sudo \
-	&& /chromium_build/install-build-deps-android.sh \
+	&& sed -i 's/snapcraft/snapcraftnoinstall/g' /chromium_build/install-build-deps.sh \
+	&& /chromium_build/install-build-deps.sh --no-prompt --no-chromeos-fonts \
 	&& rm -rf /chromium_build \
 	&& rm -rf /var/lib/apt/lists/*
 
-RUN chmod +x /sccache-v0.2.15-x86_64-unknown-linux-musl/sccache
+RUN chmod +x /sccache-v0.7.7-x86_64-unknown-linux-musl/sccache
 
-ENV SCCACHE=/sccache-v0.2.15-x86_64-unknown-linux-musl/sccache
+ENV SCCACHE=/sccache-v0.7.7-x86_64-unknown-linux-musl/sccache
 ENV SCCACHE_DIR=./target/sccache

README.md

@@ -115,6 +115,15 @@ For Mac builds: You'll need Xcode and Xcode CLT installed. Recent macOS versions
 will also require you to pass PYTHON=python3 because macOS no longer ships with
 `python` simlinked to Python 3.
 
+For Android builds: You'll need to cross compile from a x86_64 host to the aarch64 or x64 android. You can use the following commands:
+```bash
+rustup target add aarch64-linux-android  # or x86_64-linux-android
+V8_FROM_SOURCE=1 cargo build -vv --target aarch64-linux-android
+# or with cross
+docker build --build-arg CROSS_BASE_IMAGE=ghcr.io/cross-rs/aarch64-linux-android:0.2.5 -t cross-rusty_v8:aarch64-linux-android .
+V8_FROM_SOURCE=1 cross build -vv --target aarch64-linux-android
+```
+
 The build depends on several binary tools: `gn`, `ninja` and `clang`. The tools
 will automatically be downloaded, if they are not detected in the environment.
 

build.rs

@@ -208,18 +208,51 @@ fn build_v8(is_asan: bool) {
       maybe_install_sysroot("amd64");
     };
 
-    if target_triple == "aarch64-linux-android" {
+    let t_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
-      gn_args.push(r#"v8_target_cpu="arm64""#.to_string());
+    let t_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
-      gn_args.push(r#"target_os="android""#.to_string());
 
+    if t_os == "android" {
+      let arch = if t_arch == "x86_64" {
+        "x64"
+      } else if t_arch == "aarch64" {
+        "arm64"
+      } else {
+        "unknown"
+      };
+
+      if t_arch == "x86_64" {
+        maybe_install_sysroot("amd64");
+      }
+
+      gn_args.push(format!(r#"v8_target_cpu="{}""#, arch).to_string());
+      gn_args.push(format!(r#"target_cpu="{}""#, arch).to_string());
+      gn_args.push(r#"target_os="android""#.to_string());
       gn_args.push("treat_warnings_as_errors=false".to_string());
+      gn_args.push("use_sysroot=true".to_string());
 
       // NDK 23 and above removes libgcc entirely.
       // https://github.com/rust-lang/rust/pull/85806
-      maybe_clone_repo(
+      if !Path::new("./third_party/android_ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++").exists() {
-        "./third_party/android_ndk",
+        assert!(Command::new("curl")
-        "https://github.com/denoland/android_ndk.git",
+        .arg("-L")
-      );
+        .arg("-o").arg("./third_party/android-ndk-r26c-linux.zip")
+        .arg("https://dl.google.com/android/repository/android-ndk-r26c-linux.zip")
+        .status()
+        .unwrap()
+        .success());
+
+        assert!(Command::new("unzip")
+        .arg("-d").arg("./third_party/")
+        .arg("-o")
+        .arg("-q")
+        .arg("./third_party/android-ndk-r26c-linux.zip")
+        .status()
+        .unwrap()
+        .success());
+
+        fs::rename("./third_party/android-ndk-r26c", "./third_party/android_ndk").unwrap();
+        fs::remove_file("./third_party/android-ndk-r26c-linux.zip").unwrap();
+      }
 
       static CHROMIUM_URI: &str = "https://chromium.googlesource.com";
 

tests/test_api.rs

@@ -7456,11 +7456,13 @@ fn module_snapshot() {
   }
 }
 
+#[cfg(not(all(target_os = "android", target_arch = "x86_64")))]
 #[derive(Default)]
 struct TestHeapLimitState {
   near_heap_limit_callback_calls: u64,
 }
 
+#[cfg(not(all(target_os = "android", target_arch = "x86_64")))]
 extern "C" fn heap_limit_callback(
   data: *mut c_void,
   current_heap_limit: usize,
@@ -7473,6 +7475,7 @@ extern "C" fn heap_limit_callback(
 
 // This test might fail due to a bug in V8. The upstream bug report is at
 // https://bugs.chromium.org/p/v8/issues/detail?id=10843.
+#[cfg(not(all(target_os = "android", target_arch = "x86_64")))]
 #[test]
 fn heap_limits() {
   let _setup_guard = setup::parallel_test();
@@ -7508,6 +7511,8 @@ fn heap_limits() {
   assert_eq!(1, test_state.near_heap_limit_callback_calls);
 }
 
+// Same as heap_limits()
+#[cfg(not(all(target_os = "android", target_arch = "x86_64")))]
 #[test]
 fn heap_statistics() {
   let _setup_guard = setup::parallel_test();
@@ -8583,6 +8588,8 @@ fn run_with_rust_allocator() {
   assert_eq!(count_loaded, 0);
 }
 
+// Same as heap_limits()
+#[cfg(not(all(target_os = "android", target_arch = "x86_64")))]
 #[test]
 fn oom_callback() {
   extern "C" fn oom_handler(
@@ -9028,6 +9035,7 @@ fn compile_function() {
   assert_eq!(42 * 1337, result.int32_value(scope).unwrap());
 }
 
+#[cfg(not(target_os = "android"))]
 static EXAMPLE_STRING: v8::OneByteConst =
   v8::String::create_external_onebyte_const(b"const static");
 
@@ -9099,6 +9107,8 @@ fn external_strings() {
   assert!(latin1.contains_only_onebyte());
 
   // one-byte "const" test
+  #[cfg(not(target_os = "android"))]
+  {
     assert_eq!(EXAMPLE_STRING.as_bytes(), b"const static");
     let const_ref_string =
       v8::String::new_from_onebyte_const(scope, &EXAMPLE_STRING).unwrap();
@@ -9110,6 +9120,7 @@ fn external_strings() {
     assert!(const_ref_string
       .strict_equals(v8::String::new(scope, "const static").unwrap().into()));
   }
+}
 
 #[test]
 fn counter_lookup_callback() {