How to integrate Mapbox iOS framework into Kotlin native

I'm trying to integrate Mapbox's frameworks into my Kotlin multiplatform library. But I'm getting a compile error with the cinterop portion.

First problem was with the compile step with MapboxMobileEvents framework. The MapboxMobileEvents.h has import statements referring to a MapboxMobileEvents directory that doesn't exist. I created a symbolic link to get around that.

After that I'm getting an error from clang.

Exception in thread "main" java.lang.IllegalStateException: clang_parseTranslationUnit2 failed with CXError_ASTReadError;
sourceFile = /var/folders/vj/mvxq9qtn1r9_8x2c7zyx04_m0000gn/T/tmp6661284981682757951tmp8536987580934998728.m
arguments = -fmodules -isystem /Users/mkrussel/.konan/dependencies/clang-llvm-apple-8.0.0-darwin-macos/lib/clang/8.0.0/include -B/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin -fno-stack-protector -stdlib=libc++ -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator13.5.sdk -miphoneos-version-min=9.0 -O2 -I/Users/mkrussel/pangea/mapbox-native/pangea-mapbox/frameworks/MapboxMobileEvents.framework/Headers -fobjc-arc -include-pch /var/folders/vj/mvxq9qtn1r9_8x2c7zyx04_m0000gn/T/tmp1085765932502683439.pch -Werror=implicit-function-declaration -ferror-limit=0

The tmp6661284981682757951tmp8536987580934998728.m name changes on every build, but the file is always empty, which is what I assume is causing the problem.

What I cannot figure out is what causes the file to be empty.

Did I configure the cinterop wrong?

Is the Kotlin plugin broken?

Is something with the Mapbox frameworks incompatible with Kotlin native?

My gradle file looks like

iOSTarget("ios") {
   compilations {
         @Suppress("UNUSED_VARIABLE")
         val main by getting {
             kotlinOptions.freeCompilerArgs = listOf("-Xobjc-generics")

             val frameworksDir = "$projectDir/frameworks"
             cinterops(Action {
               val mapboxEvents by creating {
                   defFile("$frameworksDir/mapbox-events.def")

                   includeDirs.allHeaders("$frameworksDir/MapboxMobileEvents.framework/Headers")
               }
             })

             cinterops(Action {
                val mapbox by creating {
                    defFile("$frameworksDir/mapbox.def")
                    includeDirs.allHeaders("$frameworksDir/Mapbox.framework/Headers")
                }
             })
        }
    }
}

mapbox-events.def

package = framework.mapbox.events
language = Objective-C
headers = MapboxMobileEvents.h
headersFilter = **

compilerOpts = -F/Users/mkrussel/pangea/mapbox-native/pangea-mapbox/frameworks -framework MapboxMobileEvents -fmodules
linkerOpts = -F/Users/mkrussel/pangea/mapbox-native/pangea-mapbox/frameworks -framework MapboxMobileEvents

mapbox.def

package = framework.mapbox
language = Objective-C
headers = Mapbox.h
headersFilter = **

compilerOpts = -F/Users/mkrussel/pangea/mapbox-native/pangea-mapbox/frameworks -framework Mapbox -fmodules
linkerOpts = -F/Users/mkrussel/pangea/mapbox-native/pangea-mapbox/frameworks -framework Mapbox

Using full path names in the .def files to make sure that there's no relative path problems. Trying to use just one of the mapbox.def or the mapbox-events.def file still produces the same error.

Using:

• Kotlin version 1.3.72
• Xcode version 11.5 (11E608c)

Tried this also, and I get the same failure.

    iOSTarget("ios") {
        val frameworksDir = "$projectDir/frameworks"
        compilations {
            @Suppress("UNUSED_VARIABLE")
            val main by getting {
                kotlinOptions.freeCompilerArgs = listOf("-Xobjc-generics")

                cinterops(Action {
                    val mapboxEvents by creating {
                        defFile("$frameworksDir/mapbox-events.def")
                        packageName("com.mapbox.events")
                        header("$frameworksDir/MapboxMobileEvents.framework/Headers/MapboxMobileEvents.h")

                        compilerOpts("-fmodules")
                        includeDirs.allHeaders("$frameworksDir/MapboxMobileEvents.framework/Headers")
                    }
                })

                cinterops(Action {
                    val mapbox by creating {
                        defFile("$frameworksDir/mapbox.def")
                        packageName("com.mapbox")
                        header("$frameworksDir/Mapbox.framework/Headers/Mapbox.h")
                        compilerOpts("-fmodules")
                        includeDirs.allHeaders("$frameworksDir/Mapbox.framework/Headers")
                    }
                })
            }
        }
        binaries {
            executable {
                linkerOpts = mutableListOf("-F$frameworksDir", "-framework", "Mapbox", "-framework", "MapboxMobileEvents")
            }

        }
    }

mapbox-event.def

language = Objective-C

mapbox.def

language = Objective-C