NDK构建失败

Question

我无法在 Android Studio 中正确编译我的 NDK。每当我尝试运行编译时，我都会收到以下错误。

Error:Execution failed for task ':app:ndkBuild'. A problem occurred starting process 'command 'ndk-build.cmd''

我有以下设置

我的 build.gradle 文件如下。

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')
}

此时我不知道哪里出了问题。我已经按照几个教程尝试设置 NDK 以正常工作，但我不断收到上面显示的错误。任何人都可以提供一些关于我需要做什么才能让 NDK 编译的反馈吗？

编辑：这是出现的完整消息。

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

试试这个

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

将 (E:\\Android\\ndk\\) 替换为您的 ndk 路径。

Answer 2

我遇到过这种问题。首先，您必须在应用的 local.properties 中提供您的 NDK 路径。

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

然后在我的 build.gradle 文件中我有类似这样的东西来调用 ndk 构建命令。

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

我改成了

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

我给出了 NDK 构建的完整路径。希望对你有帮助。

Answer 3

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

谢谢！

Answer 4

万一对别人有帮助:

在环境变量中提供 NDK 路径（ndkBuild.cmd 所在的父文件夹）也可以解决问题。

或者，如果您在 Linux 或@Nooh 对 Windows 的回答，可以关注@Hayk 的回答。

我的观察：

因为，如果我把直接的 NDK 路径放在 Android Studio 中有时会解决我的问题，但它再次构建失败并抛出错误，然后我将路径放在环境变量中，项目构建成功。

在那种情况下 Windows 必须输入 *

ndk-build.cmd

* 并且仅适用于 Linux 环境 *

ndk-build

*

Answer 5

将 ndk 路径 (C:\android-ndk-r10e) 添加到环境变量（系统变量）中的路径变量值中，这使我的 "path" 变量像这样

设置 --> 系统 --> 高级系统设置 --> 系统变量

然后打开命令window(cmd)。使用 cd 命令输入项目文件夹的位置并输入 "ndk-build" 然后按回车键。

Answer 6

首先，您必须检查项目中的 local.properties 文件。在 local.properties 检查 ndk 路径。看起来像这样 ndk.dir=D:\\sdk\\ndk-bundle.
现在转到build.gradle（模块库）并找到getNdkPath()。它将 return 连接 ndk-build
更改ndk-build --> ndk-build.cmd。它看起来像这样：

希望对您有所帮助！

Answer 7

接受的答案是好的，但它不起作用，因为 android 工具 gradle 插件 2.3: No sdkHandler field in LibraryPlugin after updating to build tools 2.3.0，所以你需要使用 project.android.ndkDirectory.absolutePath 变量然后, 即:

task ndkBuild(type: Exec) {
    commandLine project.android.ndkDirectory.absolutePath + '/ndk-build', '-C', file('src/main/jni/').absolutePath
}

或者您可以直接从 local.properties 阅读 ndk.dir：

Answer 8

android studio 2.3.3 很容易。只需按照 File->Project Structure -> android NDK Location-> 单击下载按钮。安装 ndk 后解决我的问题。

Answer 9

看看下面这些 link。

你必须知道NDK通常在什么路径

Library/Android/sdk/ndk/

https://developer.android.com/studio/releases?utm_source=android-studio#4-0-0-ndk-dir

和

https://developer.android.com/studio/projects/install-ndk

和

https://wiki.appcelerator.org/display/guides2/Installing+the+Android+NDK

NDK构建失败

NDKBuild Failure

android

windows

android-studio

android-ndk