use static stockfish binary instead of PIE and non-PIE versions

Author: gerhard.kalab

libs/armeabi-v7a/libstockfish.so

@@ -229,7 +229,7 @@ private void checkUciEngine() {
 								+ File.separator
 								+ "lib"
 								+ File.separator
-								+ EngineManager.getInternalEngineFileName());
+								+ EngineManager.INTERNAL_ENGINE_FILE_NAME);
 				FileOutputStream fout = new FileOutputStream(
 						engine.getAbsolutePath());
 				byte[] b = new byte[1024];

libs/armeabi/libstockfish-nopie.so

@@ -27,7 +27,6 @@
 import android.content.DialogInterface.OnCancelListener;
 import android.content.DialogInterface.OnClickListener;
 import android.os.AsyncTask;
-import android.os.Build;
 import android.util.Log;
 import android.util.Xml;
 import android.widget.Toast;
@@ -39,6 +38,7 @@
  * Class to manage UCI chess engines.
  */
 public class EngineManager {
+	public static final String INTERNAL_ENGINE_FILE_NAME = "libstockfish.so";
 	private static final String ENGINE_DATA_FILE = "engines.xml";
 	private static final String INTERNAL_ENGINE_NAME = "Stockfish 5";
 	private static EngineConfig defaultEngine;
@@ -87,8 +87,9 @@ public interface EngineChangeListener {
 	public EngineManager(Context context) {
 		this.context = context;
 		// Establish the default engine
-		defaultEngine = new EngineConfig(INTERNAL_ENGINE_NAME, context
-				.getFilesDir().getPath() + getInternalEngineFileName(), null, 0);
+		defaultEngine = new EngineConfig(INTERNAL_ENGINE_NAME,
+				new File(context.getFilesDir(), INTERNAL_ENGINE_FILE_NAME)
+						.getAbsolutePath(), null, 0);
 	}
 
 	public String getFilesDir() {
@@ -138,17 +139,6 @@ public EngineConfig getCurrentEngine() {
 		return getDefaultEngine();
 	}
 
-	public static String getInternalEngineFileName() {
-		final String engineFileName;
-		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
-			// use the position independent executable (PIE)
-			engineFileName = "libstockfish.so";
-		} else {
-			engineFileName = "libstockfish-nopie.so";
-		}
-		return engineFileName;
-	}
-
 	/**
 	 * Convenience method to get the name of the current engine.
 	 *