无法在 XCode 中使用 Cocoapods 归档 Kotlin Native

Question

我尝试在 XCode12 中归档一个引用带有 cocoapods 插件的 Kotlin Native 框架的项目，但失败并显示如下消息（使用 iPhone SE 构建归档文件）

Ignoring file *MyFramework*, building for iOS-armv7 but attempting to link with file built for iOS-arm64

Undefined symbol: _OBJC_CLASS_$_... (for armv7)

我在项目的 Podfile 中将我的框架引用为本地 pod（使用 :path 和 :modular_headers => true）

据我所知，我必须构建一个包含 armv7 和 arm64 的胖框架，但如何使用 Kotlin cocoapods 插件来管理它？

这里有一些带有推荐的链接，但我无法将它们放在一起用于我的案例

https://github.com/ilmat192/kotlin-native-gradle-samples/blob/master/fat-framework/build.gradle.kts

https://github.com/JetBrains/kotlin-native/issues/3140

https://medium.com/@yuyaHorita/universal-frameworks-xcframework-with-kotlinnative-999d830e206e

https://github.com/JetBrains/kotlin-native/issues/2574

https://github.com/ilmat192/kotlin-native-gradle-samples/blob/master/fat-framework/build.gradle.kts

项目的build.gradle

buildscript {

    ext.kotlinVersion = '1.4.20-M2'
    // use 1.3.7 to avoid iOS build error
    // "Deserializer for declaration public kotlinx.coroutines/SingleThreadDispatcher|null[0] is not found"
    ext.coroutinesVersion = '1.3.7'
    ext.ktorVersion = '1.4.1'
    ext.napierVersion = '1.4.0'

    repositories {
        google()
        jcenter()
        maven { url "https://dl.bintray.com/kotlin/kotlin-eap" }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
    }
}
repositories {
    google()
    jcenter()
}

Molule 的 build.gradle

plugins {
    id 'org.jetbrains.kotlin.multiplatform' version "$kotlinVersion"
    id "org.jetbrains.kotlin.native.cocoapods" version "$kotlinVersion"
    id "org.jetbrains.kotlin.plugin.serialization" version "$kotlinVersion"
}
repositories {
    google()
    jcenter()
    mavenCentral()
    maven { url "https://dl.bintray.com/aakira/maven" }
    maven { url "https://dl.bintray.com/kotlin/kotlin-eap" }
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId 'org.jetbrains.kotlin.mpp_app_android'
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName '1.0'
        testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
    }
    buildTypes {
        release {
            minifyEnabled false
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:2.0.2'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
}

kotlin {
    android("android")

    targets {
        final def iOSTarget = System.getenv('SDK_NAME')?.startsWith("iphoneos")  \
         ? presets.iosArm64 : presets.iosX64

        // https://kotlinlang.org/docs/reference/mpp-dsl-reference.html#native-targets
        fromPreset(iOSTarget, 'ios') {
            binaries {
            }
        }
    }

    // CocoaPods requires the podspec to have a version.
    version = "1.0"

    cocoapods {
        // Configure fields required by CocoaPods.
        def projectName = project.getRootProject().getName()

        summary = projectName
        homepage = "https://ya.ru"
        ios.deploymentTarget = "9.0"

        frameworkName = projectName

        pod("NVHTarGzip")
    }

    sourceSets {
        commonMain {
            dependencies {
                implementation kotlin('stdlib')

                implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.0.0")
                implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime-common:0.9.1")

                // Coroutines components
                implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutinesVersion")
                // workaround https://youtrack.jetbrains.com/issue/KT-41378
                implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.9-native-mt-2")

                // Ktor components
                implementation("io.ktor:ktor-client-core:$ktorVersion")
                implementation("io.ktor:ktor-network:$ktorVersion")

                // workaround https://github.com/AAkira/Napier/issues/48
                implementation "com.github.aakira:napier:1.4.1-alpha1"
            }
        }
        commonTest {
            dependencies {
                implementation kotlin('test-common')
                implementation kotlin('test-annotations-common')
            }
        }
        androidMain {
            dependencies {
                // Ktor components
                implementation("io.ktor:ktor-client-android:$ktorVersion")
            }
        }
        androidTest {
            dependencies {
                implementation kotlin('test')
                implementation kotlin('test-junit')
            }
        }
        iosMain {
            dependencies {
                implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime-native:0.9.1")

                // Ktor components
                implementation("io.ktor:ktor-client-ios:$ktorVersion")
            }
        }
        iosTest {
        }
    }
}

解决方案

实际上不是真正的解决方案 - 基于我刚刚放弃的已接受答案 armv7 支持将其添加到 Excluded Architectures

Answer 1

building for iOS-armv7 but attempting to link with file built for iOS-arm64

看起来您正在尝试为 armv7 存档，（我认为）它是 32 位 ios，或者 watch 等。大多数应用只需要 arm64 和您的 Xcode 框架根据这个只会是 arm64:

final def iOSTarget = System.getenv('SDK_NAME')?.startsWith("iphoneos")  \
         ? presets.iosArm64 : presets.iosX64

如果您只需要 arm64，并且它只是一个 iOS 应用程序，这似乎很可能，您可以在构建中禁用 armv7 架构。或者，您可以尝试组合 ios() 目标。

我们这里有一个功能示例：https://github.com/touchlab/KaMPKit

它使用的是 cocoapods 插件的一个分支，但除了 isStatic，它基本上是相同的插件。

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