Android(安卓)studio ndk编译配置

步骤：

1、首先，在电脑->属性->系统变量中，配置NDK 目录

D:\development\tools\android-ndk-r16b

2、配置build.gradle文件，如下：

apply plugin: 'com.android.application'android {    compileSdkVersion 29    buildToolsVersion "29.0.3"    defaultConfig {        applicationId "com.bn.bullet"        minSdkVersion 14        targetSdkVersion 29        versionCode 1        versionName "1.0"        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"    }//配置1:so库生成后所在目录    sourceSets {        main {            jniLibs.srcDirs = ['D:\\whx\\AndroidStudioProject\\VolumeII\\Sample8_3\\src\\main\\libs']        }    }//配置2：    externalNativeBuild {        ndkBuild {            path file("src\\main\\jni\\Android.mk")        }        cmake {            // Provides a relative path to your CMake build script.            path "CMakeLists.txt"        }    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'        }    }}dependencies {    implementation fileTree(dir: 'libs', include: ['*.jar'])    implementation 'androidx.appcompat:appcompat:1.1.0'    testImplementation 'junit:junit:4.12'    androidTestImplementation 'androidx.test.ext:junit:1.1.1'    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'}

3、配置Application.mk

APP_STL := stlport_static//根据需求设置APP_ABI := all

4、配置CmakeLists.txt

# For more information about using CMake with Android Studio, read the# documentation: https://d.android.com/studio/projects/add-native-code.html# Sets the minimum version of CMake required to build the native library.#用来设置在编译本地库时我们需要的最小的cmake版本cmake_minimum_required(VERSION 3.4.1)# Creates and names a library, sets it as either STATIC# or SHARED, and provides the relative paths to its source code.# You can define multiple libraries, and CMake builds them for you.# Gradle automatically packages shared libraries with your APK.#创建并命名一个库，将其设置为静态#或共享，并提供到其源代码的相对路径。#您可以定义多个库，CMake为您构建它们。# Gradle自动将共享库打包到APK中。add_library(# Sets the name of the library.#生成.so文件的名字BNbullet # Sets the library as a shared library.# 设置生成的库为动态库，也可以生成动态库STATICSHARED # Provides a relative path to your source file(s).# 表示参与编译的文件的路径，这里面可以写多个文件的路径。src/main/jni/hellocpp/main.cpp )# Searches for a specified prebuilt library and stores the path as a# variable. Because CMake includes system libraries in the search path by# default, you only need to specify the name of the public NDK library# you want to add. CMake verifies that the library exists before# completing its build.#搜索指定的预构建库并将路径存储为#变量。因为CMake在搜索路径by中包含了系统库#默认情况下，您只需要指定公共NDK库的名称#CMake验证库在完成构建之前会检查库是否存在find_library( # Sets the name of the path variable.log-lib # Specifies the name of the NDK library that# you want CMake to locate.log )# Specifies libraries CMake should link to your target library. You# can link multiple libraries, such as libraries you define in this# build script, prebuilt third-party libraries, or system libraries.#指定库CMake应该链接到目标库。你#可以链接多个库，比如您在本文中定义的库#构建脚本、预构建的第三方库或系统库。target_link_libraries( # Specifies the target library.BNbullet # Links the target library to the log library# included in the NDK.${log-lib} )

5、配置gradle.properties

android.useDeprecatedNdk=true

6、配置local.properties

ndk.dir=D\:\\development\\tools\\android-ndk-r16b  //ndk所在目录

7、打开cmd，使用ndk-build命令，编译so库文件，如下：

8、Run项目到手机

此开发步骤仅供参考。

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