Prerequisites

Depending on what platforms and adapters you use, there are several prerequisites to install before getting started.

• General
  • Rust
  • Cmake
• iOS
  • Xcode
• Android
  • Android Studio
  • Also see configuration below
• Web(WASM)
  • wasm-pack
  • Download Chrome/ChromeDriver
• Circom
  • Pre-built zkey and wasm files for your circuits
• Halo2
  • Pre-generated SRS (Structured Reference String) file, typically used as the universal setup for your circuits

Android configuration

Some additional configuration is required for Android.

First, install the latest SDK. In Android Studio, go to SDK Manager > SDK Tools and install NDK (Side by Side) (see Android Developer site).

After that, set the following environment variables:

1. Export $ANDROID_HOME and change {USER_NAME} to your username

export ANDROID_HOME="/Users/{USER_NAME}/Library/Android/sdk"

2. Locate which NDK version you have

ls $ANDROID_HOME/ndk # => 26.1.10909125

3. Set it to your NDK_PATH environment variable

NDK_PATH=$ANDROID_HOME/ndk/26.1.10909125

Reference: Running Rust on Android with UniFFI.