Question

我有来自供应商的.so文件，只支持“arm”。目前它对我的Android应用程序完全正常。不知何故，我想使用Android Studio模块分离实现，因此我可以按照本教程https://www.youtube.com/watch?v=1i4I-Nph-Cw将模块导出为Jar。

导出JAR时，构建过程会返回错误

/Users/zoom/android-ndk-r9d/toolchains/mipsel-linux-android-4.8/prebuilt/darwin-x86_64/bin/../lib/gcc/mipsel-linux-android/4.8/../../../../mipsel-linux-android/bin/ld: skipping incompatible src/main/jniLibs/armeabi/libremote_client.so when searching for -lremote_client
/Users/zoom/android-ndk-r9d/toolchains/mipsel-linux-android-4.8/prebuilt/darwin-x86_64/bin/../lib/gcc/mipsel-linux-android/4.8/../../../../mipsel-linux-android/bin/ld: cannot find -lremote_client
collect2: error: ld returned 1 exit status

:app:linkMipsDebugRemoteDesktopSharedLibrary FAILED

FAILURE: Build failed with an exception.

日志说gradle试图建立针对mips但由于不兼容的库而失败，因为我只有arm库。我的问题如何跳过针对mips的构建过程？或者是否可以针对仅ARM架构？

的build.gradle

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

model {
android {
    compileSdkVersion = 23
    buildToolsVersion = "22.0.1"

    defaultConfig.with {
        //applicationId = "com.test.remote"
        minSdkVersion.apiLevel = 19
        targetSdkVersion.apiLevel = 21
        //versionCode = 1
        //versionName = "1.0"
    }

}

android.ndk {
    moduleName = "remote_client"
    //CFlags += "-DANDROID_NDK"
    CFlags += ['-std=c99', '-fstrict-aliasing']
    ldLibs += ["log", "remoted_client"]
}

android.buildTypes {
    release {

        minifyEnabled = false
        proguardFiles += file('proguard-rules.pro')
    }
}

android.sources {
    main {
        jni {
            source {
                srcDir 'src/main/jni'
            }
        }
        jniLibs {
            source {
                srcDir 'src/main/jniLibs'
            }
        }
    }
}

android.productFlavors {
    create("arm") {
        ndk.with {
            abiFilters += "armeabi"
            ldFlags += "-Lsrc/main/jniLibs/armeabi"
        }
    }
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.0.1'
}


task clearJar(type: Delete) {
delete 'mylib.jar'
}

task makeJar(type: Copy) {
   from('build/intermediates/bundles/release/')
   into('release/')
   include('classes.jar')
   rename ('classes.jar', 'mylib.jar')
}

makeJar.dependsOn(clearJar, build)

Answer 1

在Android SDK 26，NDK 15.2

上测试

在文件app/build.gradle上：

android {
    defaultConfig {
        ndk {
            abiFilters 'arm64-v8a'

仅针对arm64-v8a或所有当前未弃用的ARM目标构建：

abiFilters 'arm64-v8a', 'armeabi-v7a'

ABI目前位于：https://developer.android.com/ndk/guides/abis.html

在Ubuntu 17.10主机，Android Studio 3，Android SDK 26，NDK 15.2和Android 6.0.1设备上进行了测试。

示例项目on GitHub。

Answer 2

只需将abiFilters移至 android.ndk 部分：

model {
    android.ndk {
        moduleName = "remote_client"
        CFlags += ['-std=c99', '-fstrict-aliasing']
        ldLibs += ["log", "remoted_client"]
        abiFilters = ['armeabi']
    }
}

Answer 3

最后我做到了。这是禁用特定任务的示例。在build.gradle

上添加此行

tasks.getByPath(":app:linkMipsDebugRemoteDesktopSharedLibrary").enabled = false

如何使用仅针对ARM目标的NDK构建基于Android Gradle的应用程序？

3 个答案: