Android Studio opencv C++ 在运行时编译链接库错误

Posted 2023-02-22

【中文标题】Android Studio opencv C++ 在运行时编译链接库错误

【英文标题】：Android Studio opencv C++ compile link libraries error at runtime

【发布时间】：2015-09-30 04:18:17

【问题描述】：

我正在使用带有 NDK 的 Gradle 2.6 的 android Studio 1.3.2。

这是我的错误：

dlopen("/data/app/face.rt.jeanc.facert-2/lib/arm/libFace.so", RTLD_LAZY) failed: dlopen failed: "/data/app/face.rt.jeanc.facert-2/lib/arm/libFace.so" has unexpected e_machine: 40

另外，我的 lib Face 应该在我的文件夹（armabi、armabi-v7 等）中显示为 libFace.so，但不会出现（编译？）

这是我的 build.gradle：

apply plugin: 'com.android.model.application'

model 
    android 
        compileSdkVersion = 23
        buildToolsVersion = "23.0.1"

        defaultConfig.with 
            applicationId = "face.rt.jeanc.facert"
            minSdkVersion.apiLevel = 19
            targetSdkVersion.apiLevel = 19
            versionCode = 1
            versionName = "1.0.1"
        

    

    android.buildTypes 
        release 
            minifyEnabled = false
            proguardFiles += file('proguard-rules.txt')
        
    

    android.ndk  // keeping it to make AS correctly support C++ code editing and debugging
        moduleName = "Face"
        ldLibs += ['log']
        cppFlags += "-std=c++11"
        cppFlags += "-fexceptions"
        cppFlags += "-I$file("src/main/jni/prebuilts/include")".toString()
        cppFlags  += "-I$file("C:/Android-dev/SDKs/OpenCV-android-sdk/sdk/native/jni/include")".toString()
        cppFlags  += "-I$file("C:/Android-dev/SDKs/OpenCV-android-sdk/sdk/native/jni/include/opencv")".toString()
        cppFlags  += "-I$file("C:/Android-dev/SDKs/OpenCV-android-sdk/sdk/native/jni/include/opencv2")".toString()
        ldLibs += ["android", "EGL", "GLESv2", "dl", "log", "z"]// , "ibopencv_core"

        stl = "gnustl_shared" //"stlport_static"
    


    android.productFlavors 
    // for detailed abiFilter descriptions, refer to "Supported ABIs" @
    // https://developer.android.com/ndk/guides/abis.html#sa
    create("arm") 
            ndk.with 
                abiFilters += "armeabi"

                File curDir = file('./')
                curDir = file(curDir.absolutePath)
                String libsDir = curDir.absolutePath+"\\src\\main\\jniLibs\\armeabi\\" //"-L" +

                ldLibs += libsDir + "libnative_camera_r4.3.0.so"
                ldLibs += libsDir + "libopencv_contrib.a"
                ldLibs += libsDir + "libopencv_core.a"
                ldLibs += libsDir + "libopencv_highgui.a"
                ldLibs += libsDir + "libopencv_imgproc.a"
                ldLibs += libsDir + "libopencv_info.so"
                ldLibs += libsDir + "libopencv_java.so"
                ldLibs += libsDir + "libopencv_legacy.a"
                ldLibs += libsDir + "libopencv_ml.a"
                ldLibs += libsDir + "libopencv_ts.a"

            
        
        create("armv7") 
            ndk.with 
                abiFilters += "armeabi-v7a"

                File curDir = file('./')
                curDir = file(curDir.absolutePath)
                String libsDir = curDir.absolutePath+"\\src\\main\\jniLibs\\armeabi-v7a\\" //"-L" +

                ldLibs += libsDir + "libnative_camera_r4.3.0.so"
                ldLibs += libsDir + "libopencv_contrib.a"
                ldLibs += libsDir + "libopencv_core.a"
                ldLibs += libsDir + "libopencv_highgui.a"
                ldLibs += libsDir + "libopencv_imgproc.a"
                ldLibs += libsDir + "libopencv_info.so"
                ldLibs += libsDir + "libopencv_java.so"
                ldLibs += libsDir + "libopencv_legacy.a"
                ldLibs += libsDir + "libopencv_ml.a"
                ldLibs += libsDir + "libopencv_ts.a"

            
        

        create("x86") 
            ndk.with 
                abiFilters += "x86"

                File curDir = file('./')
                curDir = file(curDir.absolutePath)
                String libsDir = curDir.absolutePath+"\\src\\main\\jniLibs\\x86\\" //"-L" +

                ldLibs += libsDir + "libnative_camera_r4.3.0.so"
                ldLibs += libsDir + "libopencv_contrib.a"
                ldLibs += libsDir + "libopencv_core.a"
                ldLibs += libsDir + "libopencv_highgui.a"
                ldLibs += libsDir + "libopencv_imgproc.a"
                ldLibs += libsDir + "libopencv_info.so"
                ldLibs += libsDir + "libopencv_java.so"
                ldLibs += libsDir + "libopencv_legacy.a"
                ldLibs += libsDir + "libopencv_ml.a"
                ldLibs += libsDir + "libopencv_ts.a"
            
        
        create("mips") 
            ndk.with 
                abiFilters += "mips"
            
        
        create("fat") 

        
    


dependencies 
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:23.0.1'
    compile project(':openCVLibrary2411')

这是我“应该”加载不同库的代码的一部分：

////// JNI C++
static System.loadLibrary("Face");

//Externals C++ Libraries
static System.loadLibrary("libnative_camera_r4.3.0.so");
static System.loadLibrary("libopencv_contrib.a");
static System.loadLibrary("libopencv_core.a");
static System.loadLibrary("libopencv_highgui.a");
static System.loadLibrary("libopencv_imgproc.a");
static System.loadLibrary("libopencv_info.so");
static System.loadLibrary("libopencv_java.so");
static System.loadLibrary("libopencv_legacy.a");
static System.loadLibrary("libopencv_ml.a");
static System.loadLibrary("libopencv_ts.a");

我现在有点卡住了，需要一些帮助。

编辑：在这个版本的 Android Studio 和实验插件中，我没有 Android.Mk 文件来编译 jni c++。所以我想知道现在是它自己完成还是我必须手动编译？

如果我没有 Android.Mk，我该如何手动操作？

【参考方案1】：

您的构建确实成功，但您没有将共享库从 OpenCV 复制到应用程序的 libs 目录。遵循How to use opencv in android studio using gradle build tool?中的建议

请注意，可以将 Android.mk 的全部功能与 experimental 插件相结合：请参阅 define LOCAL_SRC_FILES in ndk DSL。

【讨论】：

我在你发送的第一个线程和第二个线程中做了所有事情，它仍然无法正常工作。

不工作 - 比如什么？你的 Android.mk 在做什么？

当我尝试编译时，我得到这个：[armeabi] Compile++ thumb: Face ^ 编译终止。

对于 OpenCV 3.0，您需要 NDK_TOOLCHAIN_VERSION=4.8 APP_STL=gnustl_static。这些是在Application.mk 还是在 ndk-build ocmm 命令行中定义的？

实际上我使用的是 OpenCV 2.4.11 for Android 而不是 3.0 版，但是这两个变量都已经在我的新 Application.mk 中设置了（因为我之前没有）跨度>