5.) Creating WASM runtimes with Tracing Enabled

• checkout commit of chain version to compile with WASM traces

  • For Polkadot you can checkout the version with git tags. EX: For version v0.9.3, git checkout v0.9.3

• navigate to the runtime folder/package of the chain

• add feature with-tracing = ["frame-executive/with-tracing", "sp-io/with-tracing"] under [features] to the runtime packages' Cargo.toml

• compile the runtime with cargo build --release --features with-tracing

• Tracing-enabled WASM runtime should be found in ./target/release/wbuild/{{chain}}-runtime and be called something like {{your_chain}}_runtime.compact.wasm. This can be renamed/modified however you like, as long as it retains the .wasm extension.

• run it with overrides by placing this folder with all your other runtimes, and passing the path of this folder to your chain.

  • ./target/release/polkadot --wasm-runtime-overrides /home/user/my-custom-wasm-runtimes