Hey, Can anyone please guide or provide any link h...

# multiplatform

[Vinod Rai]

Hey, Can anyone please guide or provide any link here to generate a native Universal framework with minimum size? I am generating a Universal framework and it's working perfectly but it's increasing IPA size drastically. Here is my build.gradle.kts file.

import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget

plugins {
    kotlin("multiplatform")
    kotlin("plugin.serialization")
    id("com.squareup.sqldelight")
}

kotlin {
    val iosX64 = iosX64("ios")
    val iosArm64 = iosArm64("iosArm64")
    val iosArm32 = iosArm32("iosArm32")
    val frameworkName = "EmtCore"
    configure(listOf(iosX64, iosArm64, iosArm32)) {
        binaries.framework {
            baseName = frameworkName
        }
    }
    sqldelight {
        database("EmtCoreDatabase") {
            packageName = "com.emt_core.db"
        }
    }
    jvm("android")

    sourceSets["commonMain"].dependencies {
        implementation("org.jetbrains.kotlin:kotlin-stdlib-common")
        implementation("io.ktor:ktor-client-core:1.4.1")
        implementation("io.ktor:ktor-client-json:1.4.1")
        implementation("com.russhwolf:multiplatform-settings-no-arg:0.6.1")
        implementation("io.ktor:ktor-client-serialization:1.4.1")
        implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9-native-mt-2")
        implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.0.0-rc")
        implementation("com.soywiz.korlibs.klock:klock:1.12.0")
        implementation("io.ktor:ktor-client-logging:1.4.1")
        implementation("com.squareup.sqldelight:runtime:1.4.3")
    }

    sourceSets["androidMain"].dependencies {
        implementation("org.jetbrains.kotlin:kotlin-stdlib")
        implementation("io.ktor:ktor-client-android:1.4.1")
        //implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9")
        implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.0.0-rc")
        implementation("io.ktor:ktor-client-okhttp:1.4.1")
        api("io.ktor:ktor-client-logging-jvm:1.4.1")
        implementation("io.ktor:ktor-client-json-jvm:1.4.1")
        implementation("io.ktor:ktor-client-serialization-jvm:1.4.1")
        implementation("com.squareup.okhttp3:logging-interceptor:4.4.1")
        implementation("com.squareup.sqldelight:android-driver:1.4.3")

    }

    sourceSets["iosMain"].dependencies {
        implementation("io.ktor:ktor-client-ios:1.4.1")
        //implementation ("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9")
        implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.0.0-rc")
        implementation("io.ktor:ktor-client-json-native:1.3.2")
        api("io.ktor:ktor-client-logging-native:1.3.2")
        implementation("io.ktor:ktor-client-serialization-iosx64:1.4.1")
        //implementation("io.ktor:ktor-client-serialization-iosarm64:1.4.0")
        implementation("com.squareup.sqldelight:native-driver:1.4.3")
    }

    sourceSets["iosArm64Main"].dependencies {
        implementation("io.ktor:ktor-client-ios:1.4.1")
        //implementation ("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9")
        implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.0.0-rc")
        implementation("io.ktor:ktor-client-json-native:1.3.2")
        api("io.ktor:ktor-client-logging-native:1.3.2")
        implementation("io.ktor:ktor-client-serialization-iosarm64:1.4.1")
        //implementation("io.ktor:ktor-client-serialization-iosarm64:1.4.0")
        implementation("com.squareup.sqldelight:native-driver:1.4.3")
    }

    sourceSets["iosArm32Main"].dependencies {
        implementation("io.ktor:ktor-client-ios:1.4.1")
        //implementation ("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9")
        implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.0.0-rc")
        implementation("io.ktor:ktor-client-json-native:1.3.2")
        api("io.ktor:ktor-client-logging-native:1.3.2")
        implementation("io.ktor:ktor-client-serialization-iosarm32:1.4.1")
        //implementation("io.ktor:ktor-client-serialization-iosarm64:1.4.0")
        implementation("com.squareup.sqldelight:native-driver:1.4.3")
    }

    val debugFatFramework by tasks.creating(org.jetbrains.kotlin.gradle.tasks.FatFrameworkTask::class) {
        baseName = frameworkName
        from(
           iosArm32.binaries.getFramework("debug"),
            iosArm64.binaries.getFramework("debug"),
            iosX64.binaries.getFramework("debug")
        )
        destinationDir = buildDir.resolve("fat-framework/debug")
        group = "Universal framework"
        description = "Builds a debug universal (fat) framework"
    }

    val releaseFatFramework by tasks.creating(org.jetbrains.kotlin.gradle.tasks.FatFrameworkTask::class) {
        baseName = frameworkName
        from(
            iosArm32.binaries.getFramework("release"),
            iosArm64.binaries.getFramework("release")
        )
        destinationDir = buildDir.resolve("fat-framework/release")
        group = "Universal framework"
        description = "Builds a release universal (fat) framework"
    }

    val zipDebugFatFramework by tasks.creating(Zip::class) {
        dependsOn(debugFatFramework)
        from(debugFatFramework)
       // from("LICENSE.md")
    }

    val zipReleaseFatFramework by tasks.creating(Zip::class) {
        dependsOn(releaseFatFramework)
        from(releaseFatFramework)
        //from("LICENSE.md")
    }
}

[Kuba Petržílka]

Starting from kotlin 1.4 it is not necessary to specify the dependencies to multiplatform libs for each end every target platform.. For instance you can define just:

sourceSets["commonMain"].dependencies {
        implementation("io.ktor:ktor-client-serialization:1.4.1")
}

and you don't have to mention that dependency elsewhere again

[russhwolf]

You could do that before 1.4 as well, if the library was built for it. There were metadata-enabled libraries being published since at least the beginning of 2019. The JetBrains libs just had a weird name for it (it was the -native dependency) before 1.4.

[russhwolf]

To the original question, be careful in how you measure size because it can be pretty subtle on iOS. But one thing to watch out for it that public declarations have a much greater impact on size than non-public ones, so if you can make stuff internal that you're not using from ios, it will help a lot. @kpgalligan has some notes on that in his recent talks, for example around 31:32 in this video

https://youtu.be/hrRqX7NYg3Q?t=1892▾