Khala Parachain

Khala parachain repo.

Build Note

For production build

cargo build --profile production

For testnet build

cargo build --profile testnet

Build runtime only

cargo build --profile production -p khala-parachain-runtime

Enable on-chain-release-build would reduce ~100 KB

cargo build --profile production --features on-chain-release-build -p khala-parachain-runtime

Special note for macOS

You have to install LLVM from Homebrew because Xcode bundled doesn't have WASM target

brew install llvm

As formula note shows binaries locate at /opt/homebrew/opt/llvm/bin (You can revisit it via brew info llvm, beware Intel Mac has different location)

Make alias for ar and ranlib to ensure use custom installed LLVM instead of Xcode bundled

cd /opt/homebrew/opt/llvm/bin
ln -s llvm-ar ar
ln -s llvm-ar ranlib

NOTE: You have to re-do this step after you upgrade or reinstall LLVM

Before compiling khala-node, add custom installed LLVM to $PATH

export PATH="/opt/homebrew/opt/llvm/bin:$PATH"

Development Note

Run a local testnet cluster

1. Build

cargo build --release

2. Prepare binaries

You can get latest Polkadot Linux release from https://github.com/paritytech/polkadot/releases

For macOS, you have to build from source

cp <path-to-polkadot> ./polkadot-launch/bin/
cp ./target/release/khala ./polkadot-launch/bin/

3. Start a local test net

cd polkadot-launch
yarn
yarn start ./thala_dev.config.json

4. (Optional) Inject session key.

Only required for *_local.config.json

Please make sure to use the correct session key json file.

cd scripts/js
yarn
KEY_FILE=session_key.json.example node insert_session_key.js