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# bnns_graph_compile_options_t

The compilation options that BNNS uses when compiling a source mlmodelc file to a graph object.

```
struct bnns_graph_compile_options_t
```

## Overview

Call [`BNNSGraphCompileOptionsMakeDefault()`](/documentation/Accelerate/BNNSGraphCompileOptionsMakeDefault()) to create a default options structure and then call functions such as [`BNNSGraphCompileOptionsSetOptimizationPreference(_:_:)`](/documentation/Accelerate/BNNSGraphCompileOptionsSetOptimizationPreference(_:_:)) to set indivual options.

## Topics

### Initializing an options structure

[`init()`](/documentation/Accelerate/bnns_graph_compile_options_t/init())

Creates an empty compilation options structure.

[`init(data:size:)`](/documentation/Accelerate/bnns_graph_compile_options_t/init(data:size:))

Creates a compilation options structure from the specified opaque compilation options object.

### Specifying an options structure’s properties

[`data`](/documentation/Accelerate/bnns_graph_compile_options_t/data)

A pointer to the opaque compilation options object.

[`size`](/documentation/Accelerate/bnns_graph_compile_options_t/size)

The size, in bytes, of the opaque compilation options object.


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