| name | build-native |
| description | Build connect_norito_bridge native .so files from Rust source. Use when user says "build native", "build .so", "rebuild native libs", "update native bridge", or "cargo ndk build". |
Build Native Libraries
Builds libconnect_norito_bridge.so for Android from the Rust crate at crates/connect_norito_bridge in the iroha repository. The Kotlin SDK lives next to the java/ directory in the same repo, so the Rust source is at ../../crates/connect_norito_bridge relative to this project.
Prerequisites
- Rust toolchain (1.92+) with Android targets:
aarch64-linux-android, x86_64-linux-android
cargo-ndk installed: cargo install cargo-ndkANDROID_NDK_HOME environment variable set (NDK 28+)
Build with Gradle task
./gradlew :offline-wallet-android:buildNativeLibs
The task reads iroha.dir from local.properties and runs cargo ndk. Output goes to offline-wallet-android/src/main/jniLibs/.
Manual build
1. Validate environment
which cargo-ndk || cargo install cargo-ndk
echo $ANDROID_NDK_HOME
rustup target list --installed | grep android
If targets are missing:
rustup target add aarch64-linux-android x86_64-linux-android
2. Build
From the iroha repository root:
cargo ndk -t arm64-v8a -t x86_64 \
-o <kotlin-sdk-dir>/offline-wallet-android/src/main/jniLibs \
build --release -p connect_norito_bridge
Target ABIs:
arm64-v8a — production devices (required)x86_64 — emulators (required for development)armeabi-v7a — skip (upstream rkyv crate incompatible with 32-bit)
3. Verify
ls -lh offline-wallet-android/src/main/jniLibs/arm64-v8a/libconnect_norito_bridge.so
ls -lh offline-wallet-android/src/main/jniLibs/x86_64/libconnect_norito_bridge.so
Known issues
- armeabi-v7a fails —
rkyv crate has a const evaluation overflow on 32-bit targets. This is upstream; skip this ABI.
- Long build time — First build compiles all Rust dependencies (~5-10 min). Incremental builds are faster.
- Rust version — Project requires rustc 1.92+. Check with
rustc --version.
