how should i be configuring my build script to use generics? i tried following the documentation and...

# multiplatform

[Ryan Simon]

how should i be configuring my build script to use generics? i tried following the documentation and digging into the PR that added generics support but i don't know if i'm doing it right

tasks.withType<org.jetbrains.kotlin.gradle.dsl.KotlinCommonCompile> {
    kotlinOptions {
        freeCompilerArgs = listOf("-Xobjc-generics")
    }
}

[Ryan Simon]

I tried setting it up with the

kotlin {
   ios {
        binaries.framework {
            freeCompilerArgs = freeCompilerArgs + "-Xobjc-generics"
        }
    }
}

And that was complaining about the name being the same

[Kris Wong]

freeCompilerArgs.add("-Xobjc-generics")

[Ryan Simon]

@Kris Wong huh okay, and where do I add that in my build file?

[Kris Wong]

in your framework binary's config block

[Ryan Simon]

@Kris Wong I hate to be that guy, but do you happen to have an example of what that looks like? I'm super noob on configuring KMP. Thanks for your help

[Kris Wong]

your second example is what I am talking about

[Ryan Simon]

@Kris Wong ah gotcha. i get this error when i try it

freeCompilerArgs.add("-Xobjc-generics")
                                        ^ Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: 
                                            public inline fun DependencyHandler.add(configuration: String, dependencyNotation: String, dependencyConfiguration: ExternalModuleDependency.() -> Unit)

[Ryan Simon]

i think that the freeCompilerArgs at that point is a non-mutable List

[Ryan Simon]

ios {
        binaries.framework {
            freeCompilerArgs.add("-Xobjc-generics")
        }
    }

[Kris Wong]

ah, then += operator should do the trick

[Ryan Simon]

right, okay. then it looks like this

ios {
        binaries.framework("Generics") {
            freeCompilerArgs = freeCompilerArgs + "-Xobjc-generics"
        }
    }

[Ryan Simon]

i had to add the "Generics" name otherwise it wouldn't build

[Kris Wong]

that's a problem because it's going to create 2 different frameworks

[Kris Wong]

are you using the cocoapods plugin?

[Ryan Simon]

Yeah I am

[Ryan Simon]

looks like this @Kris Wong

cocoapods {
        summary = "Common library for the KaMP starter kit"
        homepage = "<https://github.com/touchlab/KaMPStarter>"
    }

[Kris Wong]

then you need to modify the framework it creates for you rather than creating a new one

[Ryan Simon]

ohhh, how does one do that? 😮

[Ryan Simon]

I looked through the docs for the plug-in but couldn't find anything on how to configure it @Kris Wong

[Kris Wong]

https://kotlinlang.org/docs/reference/building-mpp-with-gradle.html#building-final-native-binaries

[Kris Wong]

alternatively you could use tasks.withType<KotlinNativeLink>().configureEach { ...

[Ryan Simon]

huh okay, thanks for your help. much appreciated

i've been studying the kotlinconf gradle build file. looks like that might be a good option too https://github.com/JetBrains/kotlinconf-app/blob/master/common/build.gradle.kts

[Kris Wong]

looks like there's a bunch of ways

[Ryan Simon]

yeah

[Ryan Simon]

@Kris Wong this worked for me and solved for my generics issue

[Ryan Simon]

tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinNativeLink>().configureEach {
    this.binary.freeCompilerArgs += "-Xobjc-generics"
}

[Kris Wong]

technically replace binary with kotlinOptions

[Kris Wong]

that's basically going link task -> binary -> link task -> kotlinOptions -> freeCompilerArgs

[Kris Wong]

not a big deal

[Ryan Simon]

ah cool, good to know

[Ryan Simon]

thanks