Rust 二进制文件

让我们从一个简单的应用程序开始。在 AOSP 签出的根目录下，创建以下文件：

hello_rust/Android.bp:

rust_binary {
    name: "hello_rust",
    crate_name: "hello_rust",
    srcs: ["src/main.rs"],
}

hello_rust/src/main.rs:

//! Rust demo.

/// Prints a greeting to standard output.
fn main() {
    println!("Hello from Rust!");
}

你现在可以构建、推送和运行二进制文件：

m hello_rust
adb push "$ANDROID_PRODUCT_OUT/system/bin/hello_rust" /data/local/tmp
adb shell /data/local/tmp/hello_rust

Hello from Rust!

Go through the build steps and demonstrate them running in your emulator.
Notice the extensive documentation comments? The Android build rules enforce that all modules have documentation. Try removing it and see what error you get.
Stress that the Rust build rules look like the other Soong rules. This is on purpose to make it as easy to use Rust as C++ or Java.

Comprehensive Rust 🦀