Compiling your contract with the solc compiler

Solidity is a high-level language and has to be compiled before being deployed to Ethereum. In this recipe, you will learn how to use the solc command-line compiler to compile your smart contract to its binary and ABI.

Getting ready

You need to have a working installation of the solc compiler to step through this recipe. You can also make use of the JavaScript-based solcjs to compile solidity. These commands may not work in solcjs and you have to follow its documentation.

How to do it...

1. Consider the following smart contract, HelloWorld.sol, as an example:

pragma solidity ^0.4.22;

contract HelloWorld {

    string public greeting = "Hello World";

    event greetingChanged(address by, string greeting);

    function changeGreeting(string _newGreeting) public {
        greeting = _newGreeting;
        emit greetingChanged(msg.sender, _newGreeting);
    }

}

2. Verify your solc installation with the following command. It will show you all the parameters...