Foundry - Compiling Contracts

Learn how to compile your smart contracts using Foundry on Abstract.

Smart contracts must be compiled to Zksync VM-compatible bytecode using the zksolc compiler to prepare them for deployment on Abstract.

1. Configure foundry.toml

   Update your foundry.toml file to include the following options:

   [profile.default]
   src = 'src'
   libs = ['lib']
   fallback_oz = true
   is_system = false # Note: NonceHolder and the ContractDeployer system contracts can only be called with a special is_system flag as true
   mode = "3"
   
   [etherscan]
   abstractTestnet = { chain = "11124", url = "https://api-sepolia.abscan.org/api", key = "TACK2D1RGYX9U7MC31SZWWQ7FCWRYQ96AD"}
   abstractMainnet = { chain = "2741", url = "https://api.abscan.org/api", key = ""}
   
2. Compile contracts

   Compile your contracts using the following command:

   forge build --zksync
   

   This will generate the zkout directory containing the compiled smart contracts.