diff --git a/android/gen-version.sh b/android/gen-version.sh
index e8d11bf3..250bdedb 100755
--- a/android/gen-version.sh
+++ b/android/gen-version.sh
@@ -3,6 +3,7 @@
 GIT_REV_XML=$1/res/values/git-rev.xml
 
 mkdir -p $(dirname $GIT_REV_XML)
+git update-index --assume-unchanged $GIT_REV_XML
 
 echo '<?xml version="1.0" encoding="utf-8"?>' > $GIT_REV_XML
 echo '<resources>' >> $GIT_REV_XML
diff --git a/compile.sh b/compile.sh
index 60466118..7dcdcbe6 100755
--- a/compile.sh
+++ b/compile.sh
@@ -11,12 +11,12 @@ if echo "$HOME" | grep "com.termux"; then
 else
 	echo "-- Configuring for Android SDK/NDK"
 	if [ -z "$TOOLCHAIN" ]; then
-		TOOLCHAIN=4.9
+		TOOLCHAIN=host
 	fi
 fi
 
 if [ -z "$ARCHS" ]; then
-	ARCHS="armeabi-v7a armeabi x86"
+	ARCHS="armeabi-v7a armeabi x86 aarch64"
 fi
 
 if [ -z "$API" ]; then