Rumo

Cross-platform Mmbile build tool for Rust based Apps — Supporting Android / iOS

Installing

$ cargo install rumo

Usage

# Compile your app into a APK
$ rumo build

# Load the appropriate APK onto your emulator / device
$ rumo device-install

Android Overview

Rumo let's you build native Android apps with Rust while not having to write any Java.

The entire build process is wrapped up into a simple command. This is achieved by embedding your rust app as a shared library within a NativeActivity.

A shell project is provided automatically, with your own app injected inside, then built using Gradle to produce runnable APKs.

Getting Started (Android)

1. Download Android NDK

• Create standalone toolchains for each cpu arch you wish to build for.

  (ie. arm, x86, mips)

• Use $ANDROID_NDK/build/tools/make_standalone_toolchain.py to create the standalone toolchains.

2. Setup your Cargo.toml

• Add a dylib section in your Cargo.toml

  [lib]
  crate-type = ["dylib"]
  

• Place a .cargo/config to specify the linkers for each CPU ABI you wish to compile for.

  [target.x86_64-linux-android] linker = "/android/standalone-x86_64/bin/x86_64-linux-android-gcc"

  [target.arm-linux-androideabi] linker = "/android/standalone-arm/bin/arm-linux-androideabi-gcc"

• Setup your android_main() entry point inside your app code. (ie. Setup OpenGL context)

See the examples for more details.

3. You can now run rumo build which will produce Android APKs (arm-linux-androideabi) in your ./project/target directory.

• You can now achieve fast iterative development on the Desktop (x86) while building for mobile at the same time.

• Use cross platform toolkits (ie. glutin) which supports Android/iOS/PC