是的，例如here https://www.crystax.net/en/blog/3有点过时了，因此我们计划很快发布新文章，其中更新了如何将 CrystaX NDK 与新的实验性 Gradle 插件结合使用的描述。在此期间，您可以关注example https://github.com/crystax/android-samples-android-studio我已经推送到github了。该示例中最有趣的部分是应用程序的 build.gradle，因此为了方便起见，我将其复制到此处：
import org.gradle.internal.os.OperatingSystem;
apply plugin: 'com.android.model.application'
final APP_ABIS = ["armeabi", "armeabi-v7a", "x86"]
final BOOST_SHARED_LIBS = ["boost_serialization"]
model {
android {
compileSdkVersion = 23
buildToolsVersion = "23.0.1"
defaultConfig.with {
applicationId = "net.crystax.testboost2"
minSdkVersion.apiLevel = 15
targetSdkVersion.apiLevel = compileSdkVersion.asType(Integer)
versionCode = 1
versionName = "1.0"
}
}
compileOptions.with {
sourceCompatibility = JavaVersion.VERSION_1_7
targetCompatibility = JavaVersion.VERSION_1_7
}
android.ndk {
moduleName = "test-boost2"
cppFlags += "-std=c++11"
cppFlags += "-fexceptions"
cppFlags += "-frtti"
cppFlags += "-Werror"
cppFlags += "-I" + getBoostIncDir()
ldLibs.addAll BOOST_SHARED_LIBS
ldLibs += "log"
stl = "gnustl_shared"
}
android.buildTypes {
release {
minifyEnabled = false
proguardFiles += file('proguard-rules.pro')
}
}
android.productFlavors {
APP_ABIS.each { abi ->
create(getFlavorName(abi)) {
ndk.with {
abiFilters += abi
getPrebuiltLibPaths(abi).each { path ->
ldFlags += "-L" + path
}
}
}
}
}
}
tasks.all {
task ->
if (task.name.startsWith('link')) {
task.dependsOn copyNativeLibs, stripNativeLibs
}
}
task copyNativeLibs {
["debug", "release"].each { buildType ->
APP_ABIS.each { abi ->
def libs = [:]
BOOST_SHARED_LIBS.each { name ->
libs[name] = "${getBoostLibDir(abi)}/lib${name}.so"
}
libs.crystax = getLibCrystax(abi)
libs.each { name, file ->
dependsOn tasks.create(name: "copy-native-library-${name}-${abi}-${buildType}", type: Copy) {
from file
into getTargetLibDir(abi, buildType)
}
}
}
}
}
task stripNativeLibs(dependsOn: copyNativeLibs) {
["debug", "release"].each { buildType ->
APP_ABIS.each { abi ->
def libs = []
libs.addAll(BOOST_SHARED_LIBS)
libs += "crystax"
libs.each { name ->
dependsOn tasks.create(name: "strip-native-library-${name}-${abi}-${buildType}", type: Exec) {
commandLine getStripExecutable(abi), "--strip-unneeded", "${getTargetLibDir(abi, buildType)}/lib${name}.so"
}
}
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.0.1'
compile 'com.android.support:design:23.0.1'
}
def getNdkDir() {
if (System.env.ANDROID_NDK_ROOT != null)
return System.env.ANDROID_NDK_ROOT
Properties properties = new Properties()
properties.load(project.rootProject.file('local.properties').newDataInputStream())
def ndkdir = properties.getProperty('ndk.dir', null)
if (ndkdir == null)
throw new GradleException("""\
NDK location not found.
Define location with ndk.dir in the local.properties file
or with an ANDROID_NDK_ROOT environment variable.""")
return ndkdir
}
def getCrystaxNdkDir() {
def ndkDir = getNdkDir()
if (!(new File(ndkDir, "sources/crystax").exists()))
throw new GradleException("""\
'${ndkDir}' is not a CrystaX NDK.
Edit ndk.dir in local.properties or set ANDROID_NDK_ROOT
environment variable pointing to CrystaX NDK""")
return ndkDir
}
def getFlavorName(abi) {
switch (abi) {
case "armeabi":
return "arm";
case "armeabi-v7a":
return "arm7"
case "arm64-v8a":
return "arm64"
default:
return abi.replaceAll('-', '_')
}
}
def getToolchainName(abi) {
switch (abi) {
case ~/^armeabi.*/:
return "arm-linux-androideabi"
case ~/^arm64.*/:
return "aarch64-linux-android"
case "mips":
return "mipsel-linux-android"
case "mips64":
return "mips64el-linux-android"
case ["x86", "x86_64"]:
return abi
default:
throw new GradleException("Unsupported ABI: '${abi}'")
}
}
def getToolchainPrefix(abi) {
switch (abi) {
case ~/^armeabi.*/:
return "arm-linux-androideabi"
case ~/^arm64.*/:
return "aarch64-linux-android"
case "mips":
return "mipsel-linux-android"
case "mips64":
return "mips64el-linux-android"
case "x86":
return "i686-linux-android"
case "x86_64":
return "x86_64-linux-android"
default:
throw new GradleException("Unsupported ABI: '${abi}'")
}
}
def getHostOS() {
if (OperatingSystem.current().isLinux())
return "linux"
if (OperatingSystem.current().isMacOsX())
return "darwin"
if (OperatingSystem.current().isWindows())
return "windows"
throw new GradleException("Unsupported host OS")
}
def getHostArch() {
def arch = System.getProperty("os.arch")
switch (arch) {
case ["x86_64", "amd64"]:
return "x86_64"
case ~/^i[3456]86/:
case "x86":
return "x86"
default:
throw new GradleException("Can't detect host's CPU architecture: '${arch}'")
}
}
def getHostTag() {
def tag = getHostOS()
def arch = getHostArch()
if (tag != "windows" || arch != "x86")
tag += "-${arch}"
return tag
}
def getStripExecutable(abi) {
def ndk = getCrystaxNdkDir()
def toolchainName = getToolchainName(abi)
def toolchainPrefix = getToolchainPrefix(abi)
def hostTag = getHostTag()
def strip = "${ndk}/toolchains/${toolchainName}-4.9/prebuilt/${hostTag}/bin/${toolchainPrefix}-strip"
if (OperatingSystem.current().isWindows())
strip = strip.replaceAll('/', '\\\\') + '.exe'
return strip
}
def getPrebuiltLibPaths(abi) {
def paths = []
paths += getBoostLibDir(abi)
paths += getLibCrystaxDir(abi)
return paths
}
def getTargetLibDir(abi, buildType) {
return "${buildDir}/intermediates/binaries/${buildType}/${getFlavorName(abi)}/lib/${abi}"
}
def getLibCrystaxDir(abi) {
return "${getCrystaxNdkDir()}/sources/crystax/libs/${abi}"
}
def getLibCrystax(abi) {
return "${getLibCrystaxDir(abi)}/libcrystax.so"
}
def getBoostDir() {
return "${getCrystaxNdkDir()}/sources/boost/1.58.0"
}
def getBoostIncDir() {
return "${getBoostDir()}/include"
}
def getBoostLibDir(abi) {
return "${getBoostDir()}/libs/${abi}"
}
我已经使用 Android Studio 1.4 和 gradle 实验插件 0.2.0 对其进行了测试。
其实定制copyNativeLibs仅将共享库包含到 apk 中所需的任务；如果您链接静态库，copyNativeLibs根本不需要。
UPDATE:我已经添加stripNativeLibs任务只是因为我意识到 APK 包含了带有调试信息的未剥离库，使其大小太大而没有任何实际需要。
