Hey folks, wondering if there is any way to eliminate the need for duplicated code in both iosX64Main/iosArm64Main directories? Tried to find some documentation on this with no luck

I think this is the goal of HMPP: https://kotlinlang.org/docs/mpp-share-on-platforms.html#configure-the-hierarchical-structure-manually

I read that, seems a bit questionable needing to duplicate the same code, just having it build for different archs

What we're doing is that we're creating a

apple

sourceSet and sourcing it from the different targets: https://github.com/apollographql/apollo-android/blob/dev-3.x/build-logic/src/main/kotlin/Mpp.kt#L24

The

ios

shortcut defines the

iosMain

source set, so you can place your iOS code there. It should compile even without HMPP, which just adds IDE support (imports are resolved and not red).

I should've mentioned this in the original post, I added an external ios framework to my project without the use of cocoapods. I can only import this framework in the iosX64Main/iosArm64Main directories. The import does not compile correctly in the iosMain directory. Is this expected behaviour for external frameworks?

What I usually do is add custom sourceRoot to both sourceSets

Any open source examples of this?

kotlin.sourceSets["iosX64Main"].kotlin.srcDir("src/sharedIosMain/kotlin") Do this in gradle for both and place your code there. Or even better yet, just add one's kotlin root to the other's

Let me try that

Beware that this is a hack, not standard practice

How does one use code in

iosMain

that was declared in

iosX64Main

?

You can't, (well, if you put an

expect

in

iosMain

and the

actual

in each sub-source set you kind of can). The setup with HMPP is you have some "more common" source set like

iosMain

that each of the

iosX64Main

,

iosArm64Main

, etc depend on. It's essentially the same as a common source set, just only shared between a few modules