tasks.json

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    // tasks and problem matcher to compile Atari sources in the Mac/65 format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Build - ATASM",
            "type": "shell",
            "command": "atasm",
            "args": [
                "${relativeFile}",
                "-mae",
                "-Iincludes",
                "-IUtility",
                "-o${fileBasenameNoExtension}.com"
            ],
            "group": "build",
            "presentation": {
                // Reveal the output only if unrecognized errors occur.
                "reveal": "always"
            },
            "problemMatcher": {
                "owner": "atasm",
                "fileLocation": [
                    "relative",
                    "${workspaceFolder}"
                ],
                "pattern": [
                    {
                        "regexp": "^In (.*),\\sline\\s(\\d+)--$",
                        "file": 1,
                        "line": 2,
                    },
                    {
                        "regexp": "^\\s(Error|Warning):\\s(.*)$",
                        "severity": 1,
                        "message": 2
                    }
                ]
            }
        },
        {
            "label": "Build - MADS",
            "type": "shell",
            "command": "mads",
            "args": [
                "${fileBasename}",
                "-l",
                "-o:${fileBasenameNoExtension}.com"
            ],
            "group": "build",
            "presentation": {
                // Reveal the output only if unrecognized errors occur.
                "reveal": "always"
            },
            "problemMatcher": {
                "owner": "MADS",
                "fileLocation": [
                    "relative",
                    "${workspaceFolder}"
                ],
                "pattern": [
                    {
                        "regexp": "^(.*)\\s\\((\\d*)\\)\\s(ERROR|WARNING):\\s(.*)$",
                        "file": 1,
                        "line": 2,
                        "severity": 3,
                        "message": 4,
                    }
                ]
            }
        }
    ]
}