fail to import the sol in parent path

[ayeteng]

Description

import sol file doesn't work with parent path set.
example:

solc --abi --bin --overwrite n1.sol -o /Users/sam/work/car/contracts/storage/compiled
n1.sol:4:1: Error: Source "CMEnabled.sol" not found: File not found.
import "../CMEnabled.sol";

but if I change the import path to ./ and add the file in the same path.

solc --abi --bin --overwrite CMCEnabled.sol -o /Users/samteng/work/car/contracts/compiled

import "./CMEnabled.sol";

Environment

• Compiler version:

solc --version
solc, the solidity compiler commandline interface
Version: 0.4.24+commit.e67f0147.Darwin.appleclang

• Operating system:
  OSX 10.13.6

Steps to Reproduce

solc --abi --bin --overwrite n1.sol -o /Users/sam/work/car/contracts/storage/compiled
n1.sol:4:1: Error: Source "CMEnabled.sol" not found: File not found.
import "../CMEnabled.sol";

Please provide a minimal source code example to trigger the bug you have found.
Please also mention any command line flags that are necessary for triggering the bug.
Provide as much information as necessary to reproduce the bug.

pragma solidity ^0.4.24;

import "./utility.sol";
import "../CMEnabled.sol";

[chriseth]

I'm sorry, but importing from the parent path is not supported like that, because it would not be possible to generate a virtual directory structure to be used internally by the compiler. Please use remappings (and import from global virtual paths) or restructure your code layout so that this is not required.

Created an issue to track documentation: #4915