VSCode task to compile OCaml

tasks.json

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "0.1.0",
    "tasks": [
        {
            "taskName": "make",
            "isBuildCommand": true,
            "command": "make",
            "options": {
                "cwd": "${workspaceRoot}"
            },
            "isShellCommand": true,
            "args": [
                "byte"
            ],
            "showOutput": "always",
            "isBackground": false,
            "problemMatcher": {
                "fileLocation": ["relative", "${workspaceRoot}"],
                "owner": "ocaml",
                "background": {
                    "activeOnStart": false,
                    "beginsPattern": "ocaml setup.ml -build",
                    "endsPattern": "-o ahrefs.byte"
                },
                "pattern": [
                    {
                        "regexp": "^File \"(.*)\", line (\\d+)(?:, characters (\\d+)-(\\d+))?:$",
                        "file": 1,
                        "line": 2,
                        "column": 3,
                        "endColumn": 4
                    },
                    {
                        "regexp": "^(?:(?:Parse\\s+)?(Warning|[Ee]rror)(?:\\s+\\d+)?:)?\\s+(.*)$",
                        "severity": 1,
                        "message": 2,
                        "loop": true
                    }
                ]
            }
        }
    ]
}