Compile contract

Before a contract can be used, it must be compiled into wasm bytecode or artefacts that can be stored on chain.

CUDOS Blast makes compilation easy with a single command.

Rust optimiser

CUDOS Blast uses Rust Optimiser under the hood to compile contracts ready for deployment.

Check you are at Project root

First, let's make sure we are at the project root.

counter username$ ls
Cargo.lock      jsconfig.json       scripts
Cargo.toml      local-accounts.json target
blast.config.js     package.json        tests
contracts       schema

Compile contracts

Run the compile command

counter username$ blast compile

# Example response extract

Compiling contracts at: "/Users/ad/projects/counter/contracts" with 0.12.6 version
Unable to find image 'cosmwasm/workspace-optimizer:0.12.6' locally
0.12.6: Pulling from cosmwasm/workspace-optimizer
df9b9388f04a: Already exists 
2113a6fa04a6: Already exists 
...
Building artifacts in workspace ...
Found workspace member entries: ["contracts/*"]
Package directories: ["contracts/alpha", "contracts/beta"]
Contracts to be built: ["contracts/alpha", "contracts/beta"]
Building "contracts/alpha" ...
 Downloading crates ...
  Downloaded base16ct v0.1.1
  Downloaded sec1 v0.2.1
...
Non-cacheable reasons:
crate-type                           13
-                                     4

Cache location                  Local disk: "/root/.cache/sccache"
Cache size                           14 MiB
Max cache size                       10 GiB
done

Successful compilation

A new artifacts folder is created containing alpha.wasm and beta.wasm.

Now we are ready to deploy the artifacts.

Let's spin up a local node.