Kotlin Native Interop

This project aims to bring native libraries to Kotlin on JVM. This is work in progress and currently only basic Objective-C interoperability on Mac OS X is supported.

Prerequisites

You should have Xcode Command Line Tools, CMake and Boost installed.

Also, unfortunately, at the moment you need to install system-wide LLVM (3.5.1) via Homebrew (this is likely to improve in the future):

$ brew install llvm --with-clang

Be aware that LLVM build can take a long time (about half an hour on an average Mac).

If you have a newer version of LLVM and it doesn't work, see these instructions on installing another version.

Building

Before the first build you should run

$ ant -f update_dependencies.xml

This will fetch dependencies and build third-party libraries.

Then run

$ ant

to build artifacts needed for tests. Each change to modules "indexer" or "runtime-objc" then needs to be followed by ant.

Every time you change .proto or signatures of native methods in Java you need to manually invoke

$ ant gen

If you forget to do so and run ant as usual, the build will fail, prompting you to invoke ant gen first.

Running tests

Run "All Tests" run configuration from IntelliJ IDEA.

Note that manual running of tests (right-click + Run/Debug) will not work unless the options are set to those of the "All Tests" run configuration. To fix this for the local project, go to Run Configurations -> Defaults -> JUnit and copy VM options and working directory of "All Tests" there.

License

Licensed under the Apache License, Version 2.0.