NDKBuild失效

Question

我很难让NDK在Android中正确编译。每当我试图运行编译时，我都会得到以下错误。

错误:任务执行失败“：app:ndkBuild”。启动进程‘命令’NDK-build.cmd‘时出现问题

我有以下设置

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我的build.gradle文件如下所示。

import org.apache.tools.ant.taskdefs.condition.Os

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "edu.uky.cs.www.diagramaphone"
        minSdkVersion 14
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"

        sourceSets.main{
            jniLibs.srcDir 'src/main/libs'
            jni.srcDirs = [] //disable automatic ndk-build call
        }
        project.ext.versionCodes = ['armeabi':1, 'armeabi-v7a':2, 'arm64-v8a':3, 'mips':5, 'mips64':6, 'x86':8, 'x86_64':9] //versionCode digit for each supported ABI, with 64bit>32bit and x86>armeabi-*
        android.applicationVariants.all { variant ->
            // assign different version code for each output
            variant.outputs.each { output ->
                output.versionCodeOverride =
                        project.ext.versionCodes.get(output.getFilter(com.android.build.OutputFile.ABI), 0) * 1000000 + defaultConfig.versionCode
            }
        }
        // call regular ndk-build(.cmd) script from app directory
        task ndkBuild(type: Exec) {
            if (Os.isFamily(Os.FAMILY_WINDOWS)) {
                commandLine 'ndk-build.cmd', '-C', file('src/main').absolutePath
            } else {
                commandLine 'ndk-build', '-C', file('src/main').absolutePath
            }
        }
        tasks.withType(JavaCompile) {
            compileTask -> compileTask.dependsOn ndkBuild
        }
        //ndk {
          //  moduleName "shape-detect"
            //cFlags "-DANDROID_NDK -D_DEBUG DNULL=0" // Define some macros
            //ldLibs "EGL", "GLESv3", "dl", "log"         // Link with these libraries!
            //stl "stlport_shared"                        // Use shared stlport library
        //}

    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:21.0.3'
    compile project(':libraries:tess-two')
    compile project(':libraries:opencv')
}

在这一点上，我不知道什么可能是错误的。我遵循了几个教程来尝试设置NDK以使其正常工作，但是我一直得到上面显示的错误。这里有人能提供一些反馈，说明我需要做些什么才能让NDK编译吗？

编辑:这是发生的整个消息。

Information:Gradle tasks [:app:assembleDebug]
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:libraries:opencv:compileLint
:libraries:opencv:copyReleaseLint UP-TO-DATE
:libraries:opencv:mergeReleaseProguardFiles UP-TO-DATE
:libraries:opencv:preBuild UP-TO-DATE
:libraries:opencv:preReleaseBuild UP-TO-DATE
:libraries:opencv:checkReleaseManifest
:libraries:opencv:prepareReleaseDependencies
:libraries:opencv:compileReleaseAidl UP-TO-DATE
:libraries:opencv:compileReleaseRenderscript UP-TO-DATE
:libraries:opencv:generateReleaseBuildConfig UP-TO-DATE
:libraries:opencv:generateReleaseAssets UP-TO-DATE
:libraries:opencv:mergeReleaseAssets UP-TO-DATE
:libraries:opencv:generateReleaseResValues UP-TO-DATE
:libraries:opencv:generateReleaseResources UP-TO-DATE
:libraries:opencv:packageReleaseResources UP-TO-DATE
:libraries:opencv:processReleaseManifest UP-TO-DATE
:libraries:opencv:processReleaseResources UP-TO-DATE
:libraries:opencv:generateReleaseSources UP-TO-DATE
:libraries:opencv:compileReleaseJava UP-TO-DATE
:libraries:opencv:processReleaseJavaRes UP-TO-DATE
:libraries:opencv:packageReleaseJar UP-TO-DATE
:libraries:opencv:compileReleaseNdk UP-TO-DATE
:libraries:opencv:packageReleaseJniLibs UP-TO-DATE
:libraries:opencv:packageReleaseLocalJar UP-TO-DATE
:libraries:opencv:packageReleaseRenderscript UP-TO-DATE
:libraries:opencv:bundleRelease UP-TO-DATE
:libraries:tess-two:compileLint
:libraries:tess-two:copyReleaseLint UP-TO-DATE
:libraries:tess-two:mergeReleaseProguardFiles UP-TO-DATE
:libraries:tess-two:preBuild UP-TO-DATE
:libraries:tess-two:preReleaseBuild UP-TO-DATE
:libraries:tess-two:checkReleaseManifest
:libraries:tess-two:prepareReleaseDependencies
:libraries:tess-two:compileReleaseAidl UP-TO-DATE
:libraries:tess-two:compileReleaseRenderscript UP-TO-DATE
:libraries:tess-two:generateReleaseBuildConfig UP-TO-DATE
:libraries:tess-two:generateReleaseAssets UP-TO-DATE
:libraries:tess-two:mergeReleaseAssets UP-TO-DATE
:libraries:tess-two:generateReleaseResValues UP-TO-DATE
:libraries:tess-two:generateReleaseResources UP-TO-DATE
:libraries:tess-two:packageReleaseResources UP-TO-DATE
:libraries:tess-two:processReleaseManifest UP-TO-DATE
:libraries:tess-two:processReleaseResources UP-TO-DATE
:libraries:tess-two:generateReleaseSources UP-TO-DATE
:libraries:tess-two:compileReleaseJava UP-TO-DATE
:libraries:tess-two:processReleaseJavaRes UP-TO-DATE
:libraries:tess-two:packageReleaseJar UP-TO-DATE
:libraries:tess-two:compileReleaseNdk UP-TO-DATE
:libraries:tess-two:packageReleaseJniLibs UP-TO-DATE
:libraries:tess-two:packageReleaseLocalJar UP-TO-DATE
:libraries:tess-two:packageReleaseRenderscript UP-TO-DATE
:libraries:tess-two:bundleRelease UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72103Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42103Library UP-TO-DATE
:app:prepareDiagramaphoneLibrariesOpencvUnspecifiedLibrary UP-TO-DATE
:app:prepareDiagramaphoneLibrariesTessTwoUnspecifiedLibrary UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:ndkBuild FAILED
Error:Execution failed for task ':app:ndkBuild'.
> A problem occurred starting process 'command 'ndk-build.cmd''
Information:BUILD FAILED
Information:Total time: 2.226 secs
Information:1 error
Information:0 warnings
Information:See complete output in console

Answer 1

我遇到了这样的问题。首先，您必须在应用程序的local.properties中给出您的NDK路径。

例如ndk.dir=/home/user/bin/android_ndk/android-ndk-r10e

然后，在我的build.gradle文件中，我有这样的东西来调用ndk命令。

commandLine 'ndk-build', '-C', file('src/main/jni').absolutePath

I'v把它改成

commandLine '/home/user/bin/android_ndk/android-ndk-r10e/ndk-build', '-C', file('src/main/jni').absolutePath

我给出了NDK建设的全部路径。希望它能帮到你。

Answer 2

在android中，文件->项目结构-> SDK位置，为您的计算机设置Android位置。

谢谢!

Answer 3

尝尝这个

commandLine'E:\\Android\\ndk\\ndkbuild.cmd','-C',file('src/main/jni').absolutePath

用ndk路径替换(E:\Android\ndk\)。