在solcjs中不支持文件导入回调

Question

运行E:\projects\Greeter-Contract-master\contracts>solcjs --abi Greeter.sol提供：

Greeter.sol:3:1: ParserError:
Source "contracts/Mortal.sol" not found: File import callback not supported
import "contracts/Mortal.sol";
^----------------------------^

Greeter.sol:

pragma solidity ^0.6.4;

import "contracts/Mortal.sol";

contract Greeter is Mortal {
    string greeting;
   constructor( string memory _greeting) public {
        greeting = _greeting;
    }

    function changeGreeting(  string memory _greeting) public {
        greeting = _greeting;
    }

    function greet() public view returns (string memory) {
        return greeting;
    }
}

Mortal.sol:

pragma solidity ^0.6.4;

contract Mortal {
    /* Define variable owner of the type address */
    address payable owner;

    /* This function is executed at initialization and sets the owner of the contract */
    constructor() public { owner = msg.sender; }

    /* Function to recover the funds on the contract */
    function kill() public {
        if (msg.sender == owner) 
            selfdestruct(owner); 
    }
}

Answer 1

在import "contracts/Mortal.sol"中本质上有两个不同的问题：

1. 对于本地文件，输入路径名必须以./开头。
2. 由于您的文件驻留在文件夹contracts下，所以不应该将其添加到相对路径中。

因此，简单地说，更改一下：

：

import "contracts/Mortal.sol";

To此文：

import "./Mortal.sol";