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# makeDynamicLibrary(url:)

Creates a Metal dynamic library instance that contains the functions in the Metal library file at a URL.

```
func makeDynamicLibrary(url: URL) throws -> any MTLDynamicLibrary
```

## Parameters

`url`

A URL to a Metal library file (ending in `.metallib`).

## Return Value

A new [`MTLDynamicLibrary`](/documentation/Metal/MTLDynamicLibrary) instance if the method completes successfully;
otherwise Swift throws an error and Objective-C returns `nil`.

## Discussion

---

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