Rust Binaries

Let's start with a simple application. At the root of an AOSP checkout, create the following files:

hello_rust/Android.bp:

{{#include binary/Android.bp}}

hello_rust/src/main.rs:

# // Copyright 2022 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
{{#include binary/src/main.rs:main}}

You can now build, push, and run the binary:

{{#include ../build_all.sh: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 by design, to make using Rust as easy as C++ or Java.