android - 从 3.6 更新到 Android Studio 4.0 后构建具有 NDK 支持的项目时出错

Question

将 Android Studio 更新到 4.0 后，项目构建完成并出现错误

More than one file was found with OS independent path 'lib/armeabi-v7a/libdlib.so'. If you are using jniLibs and CMake IMPORTED targets, see https://developer.android.com/studio/preview/features#automatic_packaging_of_prebuilt_dependencies_used_by_cmake

该链接指向具有 Android Studio Preview 中的新功能的页面，即 4.1

编辑
实际上，您可以在 Google 缓存中找到链接的信息:
Automatic packaging of prebuilt dependencies used by CMake
那里说的是:

Prior versions of the Android Gradle Plugin required that you explicitly package any prebuilt libraries used by your CMake external native build by using jniLibs. With Android Gradle Plugin 4.0, the above configuration is no longer necessary and will result in a build failure:

但对我来说不是这样

这里是 build.gradle

apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"


defaultConfig {
    minSdkVersion 21
    targetSdkVersion 29
    versionCode 1
    versionName "1.0"

    externalNativeBuild {
        cmake {
            cFlags "-O3"
            cppFlags "-std=c++11 -frtti -fexceptions -mfpu=neon"
            arguments "-DANDROID_PLATFORM=android-16",
                    "-DANDROID_TOOLCHAIN=clang",
                    "-DANDROID_STL=c++_shared",
                    "-DANDROID_ARM_NEON=TRUE",
                    "-DANDROID_CPP_FEATURES=rtti exceptions"
        }
    }
}

buildTypes {
    debug {}
    stage {
        debuggable true
        minifyEnabled false
    }

    release {
        minifyEnabled false
    }
}

kotlinOptions {
    jvmTarget = "1.8"
}

externalNativeBuild {
    cmake {
        path "src/main/cpp/CMakeLists.txt"
        version "3.10.2"
    }
}

packagingOptions {
    pickFirst "**/libc++_shared.so"
    pickFirst "**/libdlib.so"
}

}

dependencies {
   implementation fileTree(dir: 'libs', include: ['*.jar'])

   implementation 'androidx.annotation:annotation:1.1.0'
   implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
}

和 CMakeLists.txt

set(LIB_DIR ${CMAKE_SOURCE_DIR}/src/main/jniLibs)

#
cmake_minimum_required(VERSION 3.4.1)

add_library(dlib SHARED IMPORTED)

# sets the location of the prebuilt dlib .so
set_target_properties( dlib
        PROPERTIES IMPORTED_LOCATION
        ${CMAKE_SOURCE_DIR}/../jniLibs/${ANDROID_ABI}/libdlib.so )

# ------------------------------------------------------------------

add_library( # Sets the name of the library.
        face-lib

        # Sets the library as a shared library.
        SHARED

        # Provides a relative path to your source file(s).
        face-lib.cpp)

target_include_directories(
        face-lib PRIVATE
        ${CMAKE_SOURCE_DIR}/include
)

find_library( # Sets the name of the path variable.
        log-lib

        # Specifies the name of the NDK library that
        # you want CMake to locate.
        log)


target_link_libraries( # Specifies the target library.
        face-lib

        dlib

        # Links the target library to the log library
        # included in the NDK.
        ${log-lib})

Answer 1

好的，所以我找到了解决方案，我已将其添加到带有 native 库的模块中:

 packagingOptions {
        pickFirst "**/libdlib.so"
    }

我不喜欢它，因为它解决了后果，而不是根本原因。
如果有人有更好的解决方案，请在此处发布。
另一种解决方案 @GavinAndre answer 中指出了有效的方法
要点是，如果您使用 Cmake，请不要存储您的 .so在 jniLibs文件夹。
将它们移动到另一个文件夹，例如 cmakeLibs .
例如:

set_target_properties( dlib
        PROPERTIES IMPORTED_LOCATION
        ${CMAKE_SOURCE_DIR}/../cmakeLibs/${ANDROID_ABI}/libdlib.so )