ANDROID: add build setting for library-mode

Author: chrisws

src/platform/android/Makefile.am

@@ -31,5 +31,10 @@ ndk-build-release:
 	(cd jni && ${NDK}/ndk-build NDK_DEBUG=0)
 
 release:
-	(./gradle assemble)
+	(./gradlew clean assemble)
 
+library:
+	(./gradlew clean assemble)
+	(mkdir -p dist)
+	(cp -R app/build/intermediates/stripped_native_libs/release/out/lib/ dist)
+	(cp app/build/intermediates/dex/release/minifyReleaseWithR8/classes.dex dist)

src/platform/android/jni/runtime.cpp

@@ -489,6 +489,10 @@ void Runtime::runShell() {
   loadConfig();
 
   strcpy(opt_modpath, getString("getModulePath"));
+
+#if defined(_ANDROID_LIBRARY)
+  runOnce(MAIN_BAS, true);
+#else
   String ipAddress = getString("getIpAddress");
   if (!ipAddress.empty()) {
     setenv("IP_ADDR", ipAddress.c_str(), 1);
@@ -504,6 +508,7 @@ void Runtime::runShell() {
     runMain(MAIN_BAS);
   }
   saveConfig();
+#endif
 
   _state = kDoneState;
   logLeaving();