Update for RN 0.60 (#95)

Newer RN manages JSC by node dependency.
facebook/react-native#24276
Integrate and update JSC would be easier than before.

However, [in the PR comments](facebook/react-native#24276) there are still some enhancements could be done.

1. Align NDK version to prevent potential ABI incompatible issue.
2. Remove libc++_shared.so from jsc-android.aar, so that user don't need to use `packagingOptions.pickFirst` to exclude them.
   For RN 0.58 and before, since it was built by gcc.
  These is no libc++_shared.so but libgnustl_shared.so.
  For jsc-android side, provide an android-jsc-cppruntime.aar for user to add libc++_shared.so.

Author: Kudo

.circleci/config.yml

@@ -5,7 +5,7 @@ jobs:
     working_directory: ~/jsc-android-buildscripts
     machine: true
     environment:
-      NDK_VERSION: r18
+      NDK_VERSION: r17c
       SDK_VERSION: sdk-tools-linux-3859397.zip
       ANDROID_HOME: /home/circleci/android-sdk
       ANDROID_NDK: /home/circleci/android-ndk

README.md

@@ -45,6 +45,78 @@ On load, JSC prints the version out to logcat, under "JavaScriptCore.Version" ta
 
 Follow steps below in order for your React Native app to use new version of JSC VM on android:
 
+### For React Native version 0.60 and newer
+
+1. Update `jsc-android`:
+
+```
+yarn add jsc-android
+
+# Or if you would like to try latest version
+# yarn add 'jsc-android@canary`
+
+```
+
+2. You're done, rebuild your app and enjoy updated version of JSC on android!
+
+### For React Native version 0.59
+
+1. Add `jsc-android` to the "dependencies" section in your `package.json`:
+```diff
+dependencies {
++  "jsc-android": "241213.x.x",
+```
+
+then run `npm install` or `yarn` (depending which npm client you use) in order for the new dependency to be installed in `node_modules`
+
+2. Modify `android/build.gradle` file to add new local maven repository packaged in the `jsc-android` package to the search path:
+```diff
+allprojects {
+    repositories {
+        mavenLocal()
+        jcenter()
+        maven {
+            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+            url "$rootDir/../node_modules/react-native/android"
+        }
++       maven {
++           // Local Maven repo containing AARs with JSC library built for Android
++           url "$rootDir/../node_modules/jsc-android/dist"
++       }
+    }
+}
+```
+
+3. Update your app's `build.gradle` file located in `android/app/build.gradle` to add the JSC dependencey.  Please make sure the dependency should put before  React Native dependency.
+
+```diff
+
+dependencies {
++   // Make sure to put android-jsc at the the first
++   implementation "org.webkit:android-jsc:r241213"
++
+    compile fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
+    implementation "com.facebook.react:react-native:+"  // From node_modules
+}
+```
+
+4. Update your app's `build.gradle` file located in `android/app/build.gradle` to use first matched JSC library.
+
+```diff
+android {
+    // ...
++   packagingOptions {
++       pickFirst '**/libjsc.so'
++       pickFirst '**/libc++_shared.so'
++    }
+}
+```
+
+5. You're done, rebuild your app and enjoy updated version of JSC on android!
+
+### For React Native version 0.58 below
+
 1. Add `jsc-android` to the "dependencies" section in your `package.json`:
 ```diff
 dependencies {
@@ -84,6 +156,10 @@ allprojects {
 
 dependencies {
     compile fileTree(dir: "libs", include: ["*.jar"])
++   // ...
++   implementation 'org.webkit:android-jsc-cppruntime:+'
++   // For even older gradle
++   // compile 'org.webkit:android-jsc-cppruntime:+'
 ```
 
 4. You're done, rebuild your app and enjoy updated version of JSC on android!
@@ -93,6 +169,35 @@ International variant includes ICU i18n library and necessary data allowing to u
 
 To use this variant instead replace the third installation step with:
 
+For React Native version 0.60 and newer, your build.gradle should have a flag to enable this feature.
+
+```diff
+  /**
+   * Use the international variant of JavaScriptCore
+   * This variant includes the ICU i18n library to make APIs like `Date.toLocaleString`
+   * and `String.localeCompare` work when using with locales other than en-US.
+   * Note that this variant is about 6MiB larger per architecture than the default.
+   */
+-  def useIntlJsc = false
++  def useIntlJsc = true
+```
+
+For React Native version 0.59, replace original artifact id with `android-jsc-intl`
+
+```diff
+
+dependencies {
++   // Make sure to put android-jsc at the the first
++   implementation "org.webkit:android-jsc-intl:r241213"
++
+    compile fileTree(dir: "libs", include: ["*.jar"])
+    implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
+    implementation "com.facebook.react:react-native:+"  // From node_modules
+}
+```
+
+For React Native version 0.58 below, replace original `resolutionStrategy` with this.
+
 ```diff
 +configurations.all {
 +    resolutionStrategy {

lib/cppruntime/build.gradle

@@ -0,0 +1,45 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 28
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+    }
+
+    sourceSets {
+        main {
+            jniLibs.srcDirs = ["${rootDir}/../build/cppruntime"]
+        }
+    }
+}
+
+dependencies {}
+
+apply plugin: 'maven'
+
+task createAAR(type: Upload) {
+    def distDir = "${rootDir}/../dist"
+
+    def revision = project.findProperty("revision") ?: "".replaceAll("\\s", "")
+
+    doFirst {
+        if (!revision) throw new RuntimeException("expecting --project-prop revision=??? but was empty")
+    }
+
+    project.group = "org.webkit"
+    project.version = "r${revision}"
+
+    configuration = configurations.archives
+    repositories.mavenDeployer {
+        repository url: "file://${distDir}"
+        pom.project {
+            name "android-jsc"
+            artifactId "android-jsc-cppruntime"
+            packaging "aar"
+        }
+    }
+}

lib/cppruntime/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.webkit.androidjsc" />

lib/settings.gradle

@@ -1,3 +1,4 @@
 rootProject.name = 'JavaScriptCore Lib'
 
 include ':android-jsc'
+include ':cppruntime'

scripts/compile/common.sh

@@ -160,3 +160,6 @@ JSC_CFLAGS="$COMMON_CFLAGS -DU_STATIC_IMPLEMENTATION=1 -DU_SHOW_CPLUSPLUS_API=0"
 
 INSTALL_DIR=$ROOTDIR/build/compiled/$JNI_ARCH
 mkdir -p $INSTALL_DIR
+
+INSTALL_CPPRUNTIME_DIR=$ROOTDIR/build/cppruntime/$JNI_ARCH
+mkdir -p $INSTALL_CPPRUNTIME_DIR

scripts/compile/jsc.sh

@@ -71,4 +71,3 @@ $TARGETDIR/webkit/Tools/Scripts/build-webkit \
 
 cp $TARGETDIR/webkit/WebKitBuild/Release/lib/libjsc.so $INSTALL_DIR
 mv $TARGETDIR/webkit/WebKitBuild $TARGETDIR/webkit/${CROSS_COMPILE_PLATFORM}-${FLAVOR}
-cp $TOOLCHAIN_LINK_DIR/libc++_shared.so $INSTALL_DIR

scripts/compile/toolchain.sh

@@ -10,3 +10,5 @@ $ANDROID_NDK/build/tools/make_standalone_toolchain.py \
     --install-dir $TOOLCHAIN_DIR \
     --arch $ARCH \
     --stl libc++
+
+cp $TOOLCHAIN_LINK_DIR/libc++_shared.so $INSTALL_CPPRUNTIME_DIR

scripts/start.sh

@@ -20,7 +20,7 @@ patchAndMakeICU() {
   rm -rf $TARGETDIR/icu/host
   mkdir -p $TARGETDIR/icu/host
   cd $TARGETDIR/icu/host
-  
+
   $TARGETDIR/icu/source/runConfigureICU Linux \
   --prefix=$PWD/prebuilts \
   CFLAGS="-Os" \
@@ -53,7 +53,7 @@ prep() {
   printf "\n\n\t\t===================== copy downloaded sources =====================\n\n"
   rm -rf $TARGETDIR
   cp -Rf $ROOTDIR/build/download $TARGETDIR
-  
+
   patchAndMakeICU
   patchJsc
   # origs=$(find $ROOTDIR/build/target -name "*.orig")
@@ -67,10 +67,12 @@ compile() {
 }
 
 createAAR() {
-  printf "\n\n\t\t===================== create aar =====================\n\n"
+  TARGET=$1
+  printf "\n\n\t\t===================== create aar :$TARGET: =====================\n\n"
   cd $ROOTDIR/lib
-  ./gradlew clean createAAR --project-prop revision="$REVISION" --project-prop i18n="${I18N}"
+  ./gradlew clean :$TARGET:createAAR --project-prop revision="$REVISION" --project-prop i18n="${I18N}"
   cd $ROOTDIR
+  unset TARGET
 }
 
 copyHeaders() {
@@ -82,12 +84,14 @@ copyHeaders() {
 export I18N=false
 prep
 compile
-createAAR
+createAAR "android-jsc"
 
 export I18N=true
 prep
 compile
-createAAR
+createAAR "android-jsc"
+
+createAAR "cppruntime"
 
 copyHeaders