Android C++ NDK : some shared libraries refuses to link in runtime

问题

I'm trying to use a C/C++ TensorFlow Lite shared library for my project, and it succeeds. So I added a few more libraries, but lib_nnapi.so fails to link in runtime(System.loadLibrary). If I remove that specific library, everything works fine.

Using fetchelf to rename SONAME failed with cannot locate symbol error.

Wrote CMakeLists.txt using Official Android ndk example. All library is located in the same directories.

CMakeLists.txt

cmake_minimum_required(VERSION 3.4.1)


option(BUILD_WITH_OPENCV_4 "Build with OpenCV 4.1.0" ON)
option(BUILD_IN_ANDROID "Build the pupil library in android" ON)
option(BUILD_WITH_GUI "Build with gui version of opencv" OFF)

set(distribution_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../../distribution)

add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/opencv")


add_library(lib_tflite SHARED IMPORTED)
set_target_properties(lib_tflite PROPERTIES IMPORTED_LOCATION
        ${distribution_DIR}/tflite/lib/${ANDROID_ABI}/libtensorflowlite_c.so)

add_library(lib_tflite_gpu SHARED IMPORTED)
set_target_properties(lib_tflite_gpu PROPERTIES IMPORTED_LOCATION
        ${distribution_DIR}/tflite/lib/${ANDROID_ABI}/libtensorflowlite_gpu_delegate.so)

add_library(lib_nnapi SHARED IMPORTED)
set_target_properties(lib_nnapi PROPERTIES IMPORTED_LOCATION
        ${distribution_DIR}/tflite/lib/${ANDROID_ABI}/libnnapi_delegate.so)


set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")

add_library(hello-libs SHARED
        hello-libs.cpp)

target_include_directories(hello-libs PRIVATE
        ${distribution_DIR}/tflite/include
        ${distribution_DIR}/tflite/include/tensorflow/lite/tools/make/downloads
        ${distribution_DIR}/tflite/include/tensorflow/lite/tools/make/downloads/flatbuffers/include
)

target_link_libraries(hello-libs
        android neuralnetworks log
        lib_tflite lib_tflite_gpu
        lib_nnapi    # <- this library fails to link.
        opencv z)

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29

    defaultConfig {
        applicationId = 'com.example.hellolibs'
        minSdkVersion 27
        targetSdkVersion 29
        versionCode = 1
        versionName = '1.0'
        externalNativeBuild {
            cmake {
                cppFlags ""
                arguments '-DANDROID_STL=c++_shared'
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'),
                          'proguard-rules.pro'
            ndk {
                abiFilters "arm64-v8a"
            }
        }
        debug {
            ndk {
                abiFilters "arm64-v8a"
            }
        }
    }
    sourceSets {
        main {
            // let gradle pack the shared library into apk
            jniLibs.srcDirs = ['../distribution/tflite/lib']
        }
    }
    externalNativeBuild {
        cmake {
            version '3.10.2'
            path 'src/main/cpp/CMakeLists.txt'
        }
    }
}

dependencies {
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.android.material:material:1.1.0'
}

Error Log

2020-03-30 15:38:18.672 22574-22574/com.example.hellolibs E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.hellolibs, PID: 22574
    java.lang.UnsatisfiedLinkError: dlopen failed: library "/Users/yonggyulee/Documents/GitHub/AI-Kit/tflite/c/hello-libs/app/src/main/cpp/../../../../distribution/tflite/lib/arm64-v8a/libnnapi_delegate.so" not found
        at java.lang.Runtime.loadLibrary0(Runtime.java:1016)
        at java.lang.System.loadLibrary(System.java:1669)
        at com.example.hellolibs.MainActivity.<clinit>(MainActivity.java:32)
        at java.lang.Class.newInstance(Native Method)
        at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:69)
        at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:41)
        at android.app.Instrumentation.newActivity(Instrumentation.java:1219)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3040)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3292)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1980)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7168)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)

来源：https://stackoverflow.com/questions/60925493/android-c-ndk-some-shared-libraries-refuses-to-link-in-runtime