Fix build warnings

Change-Id: I3380441ab6f0b799eb696a7dac3153fabb703932
diff --git a/gradlew b/gradlew
index 1b6c787..f1c56bb 100755
--- a/gradlew
+++ b/gradlew
@@ -86,7 +86,7 @@
 APP_BASE_NAME=${0##*/}
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m" "-XX:+IgnoreUnrecognizedVMOptions" "--enable-native-access=ALL-UNNAMED"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum