Compiling kontlinconf-app for ios

I’m trying to build kotlinconf-app for ios, installed clion 2017.3 EAP, kotlin modules, cloned the github project, built successfully the android app and trying to compile the ios version. I successfully opened the ios project in CLion and can see three targets there (kotlinconf.compile, kotlinconf.kexe and libs).

When trying to build kontlinconf.* targets, the compilation fails with error saying it cannot find the libs package (and classes from it).

src/main/kotlin/data/FavoritesManager.kt:1:8: error: unresolved reference: libs
import libs.*
src/main/kotlin/data/FavoritesManager.kt:7:29: error: unresolved reference: KSession
    fun isFavorite(session: KSession) = getFavorite(session) != null

When I try to build the libs package, compilation fails with error saying it cannot find Groot/Groot.h:

[100%] Generating CMakeFiles/libs/libs.klib
Exception in thread "main" java.lang.Error: /var/folders/94/c3pxr0kx6nzdmz3q6zp2bn740000gn/T/tmp1325937600661251236.m:1:10: fatal error: 'Groot/Groot.h' file not found
	at org.jetbrains.kotlin.native.interop.indexer.UtilsKt.ensureNoCompileErrors(Utils.kt:135)
	at org.jetbrains.kotlin.native.interop.indexer.IndexerKt.indexDeclarations(Indexer.kt:875)
	at org.jetbrains.kotlin.native.interop.indexer.IndexerKt.buildNativeIndexImpl(Indexer.kt:865)
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexKt.buildNativeIndex(NativeIndex.kt:55)
	at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.processLib(main.kt:317)
	at org.jetbrains.kotlin.native.interop.gen.jvm.MainKt.interop(main.kt:33)
	at org.jetbrains.kotlin.cli.utilities.MainKt.invokeCinterop(main.kt:90)
	at org.jetbrains.kotlin.cli.utilities.MainKt.main(main.kt:112)
make[3]: *** [CMakeFiles/libs/libs.klib] Error 1

Any idea what is happening?

Well, you’re missing the Groot library, installing it where it expects it to be is probably the best solution, ditto for other missing libraries.

This is a symptom of a larger problem with interop libs in that there are external dependencies which are not being managed or documented at this point. In my case it was a dependency on a library in the macOS 10.12 SDK.

There needs to be a better solution for managing external dependencies, probably at the project level, but right now I don’t think it’s a priority and you should just cobble together what’s being asked for, or hack the .def files fed to interop if you cannot do that.

Well, the thing is Groot is part of the source code on github and is checked out, so this should work:

Then it’s probably in the wrong place or an environment variable or path is missing. There are many ways it can go wrong.

It’s pre-release software, your “should work” is probably a bit hopeful.