Hello guys. I have a pure Swift framework that I w...

# kotlin-native

[Diego]

Hello guys. I have a pure Swift framework that I want to use from a Kotlin MPP. In order to be able to use the framework I had to create [this bridging class](https://gist.github.com/dfpalomar/0322a839ba2bd4b5959be3ca9d58c3eb#file-cryptobridge-swift) and annotate the class and methods with @objc. I updated my build.gradle file to add the cinterops configuration and the problem is that when I try to build the project I get the following error:

> Task :p2p-common:cinteropCryptoCocoaIOS FAILED
Exception in thread "main" java.lang.Error: CryptoCocoa.framework/Headers/CryptoCocoa-Swift.h:203:4: error: expected a type

[CryptoCocoa-Swift.h](https://gist.github.com/dfpalomar/0322a839ba2bd4b5959be3ca9d58c3eb#gistcomment-2837982) is a file generated by Xcode. The line 203 is - (NSData * _Nonnull)generateAESKeyWithKeySize:(NSInteger)keySize SWIFT_WARN_UNUSED_RESULT; Am I using an unsupported swift feature? Any idea about how can I sort this out?

[svyatoslav.scherbina]

Hello.
The generated header is a bit incorrect: if you import this header to Objective-C source file, it won’t compile too.
The reason is that generated Swift header lacks Foundation import.
To workaround this, please add Foundation/Foundation.h as first entry of the headers list, i.e.

headers = Foundation/Foundation.h MyUtils-Swift.h

[Diego]

Thanks a lot @svyatoslav.scherbina. That fix my problem