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# interoperabilityMode(_:_:)

Enables Swift interoperability with a given language.

```
static func interoperabilityMode(_ mode: SwiftSetting.InteroperabilityMode, _ condition: BuildSettingCondition? = nil) -> SwiftSetting
```

## Parameters

`mode`

The interoperability mode, either C-compatible or C++-compatible.

`condition`

A condition that restricts the application of the build
setting.

## Discussion

This is useful for enabling interoperability between Swift and C++ for
a given target.

Enabling C++ interoperability mode might alter the way some existing
C and Objective-C APIs are imported.

> Since: First available in PackageDescription 5.9.

---

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