Issue 5800 - Add option to specify a list of V8 libraries

README.md

 Adblock Plus Library for Android
 ================================
 
 An Android library project, tests and demo application for AdblockWebView widget.
 
 ## Updating the dependencies
 
 Adblock Plus for Android has dependencies that aren't in this repository.
 To update those, call:
 
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 This will generate *.aar library artifact in the 'libadblockplus-android/build/outputs/aar/' directory.
 
 **Android permissions note**
 
 An app that uses the library have to add the following permissions to `AndroidManifest.xml`:
  * `<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>`
  * `<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>`
 
 (added automatically if building with Gradle or should be added manually otherwise).
 
+### Building with prebuilt shared V8
+
+This can be desired to use product's V8 (let's say Chromium) instead of built-in V8.
+Put prebuilt shared V8 library file(s) in ARCH directories and set `SHARED_V8_LIB_FILENAMES`
+environment variable before building. You can pass multiple filenames, separated with space.
+Libadblockplus is required to be linked with that library file(s).
+
+For example (build with Gradle):
+
+    SHARED_V8_LIB_FILENAMES=libv8.cr.so ./gradlew clean assemble
+    
+or
+
+    SHARED_V8_LIB_FILENAMES="libv8.cr.so libfoo.so" ./gradlew clean assemble
+    
+for multiple library files.
+
+Note
+  
+    [Configuration] Linking dynamically with shared v8 library ./libadblockplus-binaries/android_armeabi-v7a/libv8.cr.so
+
+output while building native library. 
+
 ## Library tests
 
 Android tests for the library.
 You can find them in the 'libadblockplus-android-tests' directory.
 
 ### Requirements
 
 Make sure _Library_ requirements are present.
 
 ### Building with Ant
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 This will generate *.apk in the 'libadblockplus-android-webviewapp/bin/' directory.
 
 #### Building with Gradle
 
 In the project root directory run:
 
     ./gradlew assemble
 
 This will generate *.apk in the 'libadblockplus-android-webviewapp/build/outputs/apk/' directory.