There is a way to call kotlin from objective c/swift in iOS?

Yes, there are some tricks to achieve this. 1) You can run Kotlin

main

function from C by calling

Konan_main

C function. It can be declared as

extern "C" int Konan_main(int argc, const char** argv);

For example, see

concurrent

sample: https://github.com/JetBrains/kotlin-native/blob/master/samples/concurrent/MessageChannel.cpp#L156 2) You can pass some Kotlin functions as callbacks through C interop. See https://github.com/JetBrains/kotlin-native/blob/master/INTEROP.md#callbacks for more details. Using callbacks is currently not so trivial as it could be. It is required to declare function type (e.g. using

typedef

) in C header and then generate bindings with

cinterop

tool.

@svyatoslav.scherbina Can I compile my kotlin code to static library (or llvm bytecode) or I should compile whole my project by konanc/kotlinc? I tried to include .kexe just like .a and compile .bc by clang and include but xcode cant build my project with "clang: error: linker command failed with exit code 1".

you use

konanc

as the final linker, linking with external .a, but entry point could be in those .a, not in Kotlin code, see Tetris example for iphone