diff --git a/app/.Makefile.scripts/make--AndroidManifest.xml b/app/.Makefile.scripts/make--AndroidManifest.xml
new file mode 100755
index 0000000..e033664
--- /dev/null
+++ b/app/.Makefile.scripts/make--AndroidManifest.xml
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+test -f app-config.sh && {
+    source app-config.sh
+}
+
+cat > "AndroidManifest.xml" << ANDROIDMANIFEST
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="$APP_PACKAGE"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <uses-sdk android:minSdkVersion="$APP_VERSION_SDK_MIN"
+    android:targetSdkVersion="$APP_VERSION_SDK_TARGET"/>
+$(sed 's/^/    /' <<< "$APP_PERMISSIONS")
+    <application android:label="$APP_NAME" android:icon="@drawable/ic_launcher">
+        <activity android:name="$APP_PACKAGE.AppActivity"
+                  android:exported="true"
+                  android:configChanges="orientation|screenSize|keyboardHidden"
+                  android:label="$APP_NAME">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
+ANDROIDMANIFEST
+
diff --git a/app/.Makefile.scripts/Makefile.android-sdk.sh b/app/.Makefile.scripts/make--android-sdk.sh
similarity index 59%
rename from app/.Makefile.scripts/Makefile.android-sdk.sh
rename to app/.Makefile.scripts/make--android-sdk.sh
index d46b5d3..1b14330 100755
--- a/app/.Makefile.scripts/Makefile.android-sdk.sh
+++ b/app/.Makefile.scripts/make--android-sdk.sh
@@ -52,9 +52,10 @@ test -f android-sdk/.installed.buildtools.version.$APP_VERSION_SDK_TARGET || {
     sdkmanager --install "$EXACTVERSION_BUILDTOOLS"
   }
   echo "$EXACTVERSION_BUILDTOOLS" > android-sdk/.installed.buildtools.version.$APP_VERSION_SDK_TARGET 
+  ln -rvsf android-sdk/.installed.buildtools.version.{$APP_VERSION_SDK_TARGET,current}
 }
 
-test -f android-sdk/.installed.platform.version.$APP_VERSION_SDK_TARGET || {
+test -f android-sdk/.installed.platforms.version.$APP_VERSION_SDK_TARGET || {
   EXACTVERSION_PLATFORM="$(
     sdkmanager  --list 2>/dev/null | 
       sed 's/^ *//' | 
@@ -71,43 +72,8 @@ test -f android-sdk/.installed.platform.version.$APP_VERSION_SDK_TARGET || {
   sdkmanager --list_installed | grep -q "$EXACTVERSION_PLATFORM" || {
     sdkmanager --install "$EXACTVERSION_PLATFORM"
   }
-  echo "$EXACTVERSION_PLATFORM" > android-sdk/.installed.platform.version.$APP_VERSION_SDK_TARGET 
+  echo "$EXACTVERSION_PLATFORM" > android-sdk/.installed.platforms.version.$APP_VERSION_SDK_TARGET 
+  ln -rvsf android-sdk/.installed.platforms.version.{$APP_VERSION_SDK_TARGET,current}
 }
 
-exec bash 
-
-#test -f android-sdk/.installed.buildtools.version.$APP_VERSION_SDK_TARGET || { #  EXACTVERSION_BUILDTOOLS="$(
-#    sdkmanager  --list 2>/dev/null | 
-#      sed 's/^ *//' | 
-#        grep -e 'build-tools;'"$APP_VERSION_SDK_TARGET"'\.[0-9]*\.[0-9]*\ ' | 
-#          cut -f1 -d' ' |
-#            sort |
-#              tail -n 1
-#  )"
-#  sdkmanager list_installed | -q grep "$EXACTVERSION_BUILDTOOLS" || {
-#    sdkmanager --install "$EXACTVERSION_BUILDTOOLS"
-#  }
-#  touch android-sdk/.installed.buildtools.version.$APP_VERSION_SDK_TARGET 
-#}
-
-#sdkmanager  --list | grep build-tools | grep -v rc
-
-#
-#ENV PATH="$BUILD_TOOLS_LATEST/bin:$PATH"
-##TODO make this automatic
-#ENV JAVA_HOME="/usr/lib/jvm/java-17-openjdk/"
-#ENV LIBRARY_PATH="$LIBRARY_PATH:$BUILD_TOOLS_LATEST/lib"
-#RUN echo you selected to accept the licenses/TOS
-#RUN echo "$YESACCEPT" | sdkmanager --install "build-tools;33.0.2"
-#RUN echo "$YESACCEPT" | sdkmanager --install "platforms;android-33"
-##RUN echo "$YESACCEPT" | sdkmanager --install "ndk;28.0.12433566"
-##RUN echo "$YESACCEPT" | sdkmanager --install "system-images;android-33;aosp_atd;x86_64"
-##RUN echo "$YESACCEPT" | sdkmanager --install "emulator"
-##RUN echo "no" |  avdmanager --verbose create avd  --force --name "thedevice" --package 'system-images;android-33;aosp_atd;x86_64' --tag "aosp_atd" --abi "x86_64"
-##RUN echo "$YESACCEPT" | sdkmanager --install "platform-tools"
-#COPY entrypoint.sh /entrypoint.sh
-#RUN chown 0:0 /entrypoint.sh
-#RUN chmod 0700 /entrypoint.sh
-#WORKDIR /apk
-#ENTRYPOINT ["/entrypoint.sh"]
-#RUN echo "$YESACCEPT" | tee yesaccept
+touch android-sdk/installed
diff --git a/app/.Makefile.scripts/Makefile.app-config.sh b/app/.Makefile.scripts/make--app-config.sh
similarity index 98%
rename from app/.Makefile.scripts/Makefile.app-config.sh
rename to app/.Makefile.scripts/make--app-config.sh
index c54c32d..7b35f2c 100755
--- a/app/.Makefile.scripts/Makefile.app-config.sh
+++ b/app/.Makefile.scripts/make--app-config.sh
@@ -670,8 +670,9 @@ APP_PERMISSIONS="${APP_PERMISSIONS:-"$(whiptail --nocancel --notags --checklist
 'android.permission.WRITE_SMS' 'WRITE_SMS' 0 \
 'android.permission.WRITE_SOCIAL_STREAM' 'WRITE_SOCIAL_STREAM' 0 \
 'android.permission.WRITE_SYNC_SETTINGS' 'WRITE_SYNC_SETTINGS - Allows applications to write the sync settings.' 0 \
-'android.permission.WRITE_VOICEMAIL' 'WRITE_VOICEMAIL - Allows an application to modify and remove existing voicemails in the system.' 0 3>&1 1>&2 2>&3 |
-  sed 's/"an/<uses-permission android:name="an/g;s/" /"\/>\n/g' )"}"
+'android.permission.WRITE_VOICEMAIL' 'WRITE_VOICEMAIL - Allows an application to modify and remove existing voicemails in the system.' 0 3>&1 1>&2 2>&3 | 
+  sed 's/$/ /' | 
+    sed 's/"an/<uses-permission android:name="an/g;s/" /"\/>\n/g' )"}"
 
 
 
@@ -688,36 +689,3 @@ cat << INFO
 Creating an skeleton for an Android app with the following info:
 $APP_VALUES
 INFO
-#
-#
-#cat > "${APP_FOLDER}/AndroidManifest.xml" << ANDROIDMANIFEST
-#<?xml version="1.0" encoding="utf-8"?>
-#<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-#      package="$APP_PACKAGE"
-#      android:versionCode="1"
-#      android:versionName="1.0">
-#    <uses-sdk android:minSdkVersion="$APP_VERSION_SDK_MIN"
-#    android:targetSdkVersion="$APP_VERSION_SDK_TARGET"/>
-#$(sed 's/^/    /' <<< "$APP_PERMISSIONS")
-#    <application android:label="$APP_NAME" android:icon="@drawable/ic_launcher">
-#        <activity android:name="$APP_PACKAGE.AppActivity"
-#                  android:exported="true"
-#                  android:configChanges="orientation|screenSize|keyboardHidden"
-#                  android:label="$APP_NAME">
-#            <intent-filter>
-#                <action android:name="android.intent.action.MAIN" />
-#                <category android:name="android.intent.category.LAUNCHER" />
-#            </intent-filter>
-#        </activity>
-#    </application>
-#</manifest>
-#ANDROIDMANIFEST
-#
-#cat Dockerfile > "${APP_FOLDER}/Dockerfile"
-#cat >> "${APP_FOLDER}/Dockerfile" << DOCKERFILEADDITION
-#RUN echo "$YESACCEPT" | sdkmanager --install "build-tools;33.0.2"
-#RUN echo "$YESACCEPT" | sdkmanager --install "platforms;android-33"
-#DOCKERFILEADDITION
-#
-#
-#
diff --git a/app/Makefile b/app/Makefile
index 41427e4..0c18963 100644
--- a/app/Makefile
+++ b/app/Makefile
@@ -1,46 +1,124 @@
 
 
 
-android-sdk: app-config.sh
-	./.Makefile.scripts/Makefile.android-sdk.sh
+SHELL=/bin/bash
 
-	
 
-app-config.sh: FORCE
-	./.Makefile.scripts/Makefile.app-config.sh
+#shell:
+#	bash
 
+app.apk:  ./result/app.apk
+	ln -srv ./result/app.apk ./app.apk
+
+./result/app.apk : ./result/signed.apk app-config.sh
+	source app-config.sh; $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.buildtools.version.current)/zipalign -v -f 4 $< $@
+	source app-config.sh; $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.buildtools.version.current)/apksigner sign \
+		--ks ToyKey.keystore --key-pass pass:armena --ks-pass pass:armena  $@
+
+./result/signed.apk : ./result/unsigned.apk ./ToyKey.keystore ./result
+	jarsigner -verbose -keystore ./ToyKey.keystore -storepass armena -keypass armena -signedjar $@ $< helljniKey
+
+android-sdk/installed: app-config.sh
+	./.Makefile.scripts/make--android-sdk.sh
 
 AndroidManifest.xml: app-config.sh
-	./.Makefile.scripts/Makefile.AndroidManifest.xml
+	./.Makefile.scripts/make--AndroidManifest.xml
+
+app-config.sh: 
+	./.Makefile.scripts/make--app-config.sh
 
 
+srcj/package: app-config.sh
+	source app-config.sh; PKGDIR=$$(echo "$$APP_PACKAGE" | tr '.' '/'); mkdir -p src/$$PKGDIR; ln -srv src/$$PKGDIR $@
 
-app.apk: 
-	echo hallo
+obj/package: app-config.sh
+	source app-config.sh; PKGDIR=$$(echo "$$APP_PACKAGE" | tr '.' '/'); mkdir -p obj/$$PKGDIR; ln -srv obj/$$PKGDIR $@
+
+./result /bin /assets /src/ obj:
+	mkdir -p "$@"
+
+./ToyKey.keystore : 
+	keytool -genkeypair -validity 1000 -dname "CN=alexander,O=Android,C=JPN" -keystore $@ \
+	-storepass armena -keypass armena -alias helljniKey -keyalg RSA -v
+
+./src/package/R.java : $(shell find ./res -type f) app-config.sh src/package
+	source app-config.sh; $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.buildtools.version.current)/aapt package \
+	  -v -f -m  -S ./res -J ./src -M ./AndroidManifest.xml \
+	  -I $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.platforms.version.current)/android.jar
+
+./obj/package/AppActivity.class : ./src/package/AppActivity.java  ./src/package/R.java obj/package
+	javac -d ./obj -classpath $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.platforms.version.current)/android.jar \
+	  -sourcepath ./src $<
+
+	
+./result/signed.apk : ./result/unsigned.apk ./ToyKey.keystore ./result
+	jarsigner -verbose -keystore ./ToyKey.keystore -storepass armena -keypass armena -signedjar $@ $< helljniKey
+		
+
+./result/unsigned.apk : ./bin/classes.dex  ./result ./assets 
+	rm -rvf "$@"
+	source app-config.sh; $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.buildtools.version.current)/aapt package \
+	  -v -u -f -M ./AndroidManifest.xml -S ./res \
+	  -I $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.platforms.version.current)/android.jar -A ./assets -F $@ ./bin
+		
+
+./bin/classes.dex : ./obj/package/AppActivity.class ./obj/package/AppActivity$$1.class /bin 
+	source app-config.sh; $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.buildtools.version.current)/d8 ./obj/package/*.class \
+	  --lib  $${ANDROID_SDK_ROOT}/$$(tr ';' '/' < android-sdk/.installed.platforms.version.current)/android.jar --output bin
 
 FORCE:
-	true
+	@true
+
+#ANDROID_HOME = /opt/android
+#ANDROID_VERSION = 33.0.2
+#PLATFORM = android-$(shell echo $(ANDROID_VERSION) | sed 's/\..*//')
+#TOOLCHAIN = /Users/amon/grive/development/Android/NativeToolchain
+#GCC = $(TOOLCHAIN)/bin/aarch64-linux-android-gcc
+#CXX_FLAGS = -march=armv8-a --sysroot=$(TOOLCHAIN)/sysroot
 
 
-### this includes explicit rules
-##include Makefile.apps
-##Makefile.apps: Makefile apps
-##	@./Makefile.make.Makefile.apps.sh
-##
-##apps:
-##	mkdir "$@"
-##
-##install: $(shell for APP in apps/*/; do test -d "$$APP" || continue; echo "$$APP""app.apk.install-log"; done)
-##force-install reinstall: 
-##	for APP in apps/*/; do rm -f "$$APP""app.apk.install-log" 2>/dev/null; done; $(MAKE) install
-##run: $(shell cd apps/; for APP in */; do test -d "$$APP" || continue; echo "run-$${APP%/}"; done)
-##
-##docker-compose-build.log: Dockerfile compose.yml
-##	docker-compose down --remove-orphans --rmi all
-##	BUILDKIT_PROGRESS=plain docker-compose build | tee docker-compose-build.log 
-##
-##new-app: FORCE
-##	./Makefile.make.new-app.sh
-##
-##FORCE:
-##	@true
+
+#all: build 
+#
+#.PHONY : build
+#.PHONY : deploy
+#.PHONY : clean
+#
+#build : ./result/example.app.apk
+#	mv ./result/example.app.apk app.apk
+#	true 
+#	
+#env:
+#	set > set ; env > env
+#./result/example.app.apk : ./result/signed.apk
+#	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/zipalign -v -f 4 $< $@
+#	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/apksigner sign --ks ToyKey.keystore --key-pass pass:armena --ks-pass pass:armena  $@
+#	
+#./result/signed.apk : ./result/unsigned.apk ./ToyKey.keystore ./result
+#	jarsigner -verbose -keystore ./ToyKey.keystore -storepass armena -keypass armena -signedjar $@ $< helljniKey
+#		
+#./result:
+#	mkdir -p "$@"
+#
+#./result/unsigned.apk : ./bin/classes.dex  ./result
+#	rm -rvf "$@"
+#	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/aapt package -v -u -f -M ./AndroidManifest.xml -S ./res \
+#	-I $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar -A ./assets -F $@ ./bin
+#		
+#./bin/classes.dex : ./obj/app/example/ExampleApp.class ./obj/app/example/ExampleApp$$1.class 
+#	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/d8 ./obj/app/example/*.class  --lib $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar --output bin
+#	
+#./src/app/example/R.java : $(shell find ./res -type f)
+#	$(ANDROID_HOME)/build-tools/$(ANDROID_VERSION)/aapt package -v -f -m  -S ./res -J ./src -M ./AndroidManifest.xml \
+#	-I $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar
+#
+#./obj/app/example/ExampleApp.class : ./src/app/example/ExampleApp.java  ./src/app/example/R.java 
+#	javac -d ./obj -classpath $(ANDROID_HOME)/platforms/$(PLATFORM)/android.jar -sourcepath ./src $<
+#	
+#./ToyKey.keystore : 
+#	keytool -genkeypair -validity 1000 -dname "CN=alexander,O=Android,C=JPN" -keystore $@ \
+#	-storepass armena -keypass armena -alias helljniKey -keyalg RSA -v
+#	
+#clean:
+#	rm -f ./bin/* ./lib/arm64-v8a/* ./result/*
+