Error: Resolving configuration 'ios32Api' directly is not allowed - kotlin

Question

I am trying to make a universal framework for iOS in KMP.
Here is my module build.gradle file
import org.jetbrains.kotlin.gradle.tasks.FatFrameworkTask
buildscript {
ext.serialization_version = "0.20.0"
repositories {
mavenCentral()
jcenter()
maven { url "https://dl.bintray.com/jetbrains/kotlin-native-dependencies" }
}
}
repositories {
mavenCentral()
maven { url "https://kotlin.bintray.com/kotlinx" }
}
apply plugin: 'kotlin-multiplatform'
apply plugin: 'kotlinx-serialization'
def serialization_version = "0.20.0"
kotlin{
targets {
fromPreset(presets.jvm, 'android')
iosArm32("ios32")
iosArm64("ios64")
iosX64("simulator")
configure([ios32, ios64, simulator]) {
binaries.framework('Shared')
}
}
//we have 3 different sourceSets for common, android and iOS.
//each sourceSet can have their own set of dependencies and configurations
sourceSets {
commonMain.dependencies {
api 'org.jetbrains.kotlin:kotlin-stdlib-common'
implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime-common:$serialization_version"
}
androidMain.dependencies {
api 'org.jetbrains.kotlin:kotlin-stdlib'
implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime:$serialization_version"
}
iosMain {
dependencies {
implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime-native:$serialization_version")
}
}
ios32.dependencies {
implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime-native:$serialization_version")
}
ios64.dependencies {
implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime-native:$serialization_version")
}
simulator.dependencies {
implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime-native:$serialization_version")
}
}
task fatFramework(type: FatFrameworkTask) {
// the fat framework must have the same base name as the initial frameworks
baseName = "Shared"
final File frameworkDir = new File(buildDir, "xcode-frameworks")
destinationDir = frameworkDir
// specify the frameworks to be merged
from(
targets.ios32.binaries.getFramework('Shared', 'RELEASE'),
targets.ios64.binaries.getFramework('Shared', 'RELEASE'),
targets.simulator.binaries.getFramework('Shared', 'RELEASE')
)
doLast {
new File(frameworkDir, 'gradlew').with {
text = "#!/bin/bash\nexport 'JAVA_HOME=${System.getProperty("java.home")}'\ncd '${rootProject.rootDir}'\n./gradlew \$#\n"
setExecutable(true)
}
}
}
}
configurations {
compileClasspath
}
tasks.build.dependsOn fatFramework
When I try to build my Module it gives me this error
Execution failed for task ':Shared:linkSharedReleaseFrameworkIos32'.
> Resolving configuration 'ios32Api' directly is not allowed
Am I missing something in my configuration?

Answer 1

I was unable to reproduce the error as the question features only part of the project. So, while modifying it to make things work as a separate project rather than a module, I accidentally lost the original problem. But here are my thoughts on the possible cause.
This snippet seems to be missing the difference between source sets and targets. I mean, as there are three named targets ios32, ios64, simulator, the kotlin-multiplatform plugin creates six default source sets: ios32Main, ios64Main, simulatorMain, ios32Test, ios64Test, simulatorTest. But in this code, I see new source sets named ios32 etc. being created instead of setting defaults' dependencies. This can be a problem, as there are no explicit connections between those source sets and declared targets.