How to use a C dylib from a Swift file in a framework

Question

I\'m looking at starting to use Swift in a framework, which uses libz.dylib, but it looks like there\'s no way to import it from within Swift. I tried import

Answer 1

You can import system modules as described in this answer: Importing CommonCrypto in a Swift framework

TLDR

1. Add a Folder named ZLib to your framework directory
2. Add a module.map file with the following contents

module ZLib [system] { header "/Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/zlib.h" export * }

You might have to change the path to your zlib header. The example works for XCode 7 Beta and El Capitan.

3. Add the currently generated module.map file to your build settings
4. Import ZLib in your swift file and you will be ready to go