Extract native libs from prebuilt apk file using Android.mk

Question

I have an APK file with the bundled native libs. When I install them using adb the libraries are correctly created at <path-to_package>/lib/, But I have to integrate my apk to the build system along with the Android.mk file. What I need to add in the make to get the libs extracted on to the target

Answer 1

You can find an example in AOSP, e.g. in external/chromium-webview project:

• using Android.mk (outdated): https://android.googlesource.com/platform/external/chromium-webview/+/refs/heads/android10-d4-release/Android.mk
• using Android.bp: https://android.googlesource.com/platform/external/chromium-webview/+/refs/heads/master/Android.bp.

Also some related topics were already discussed on SO:

• How do I add APKs in an AOSP build?
• When are the APKs in system/app being installed?

Answer 2

• If you have libraries then copy libraries and create a folder in aosp_source/external/yourlibfolder and paste your libraries there.

• Go to build/target/product and write this code in your relevant make file(e.g handhel_system.mk) for each of library. Replace yourlibname with each library name

external/yourlibfolder/yourlibname.so:system/lib/yourlibname.so \
external/yourlibfolder/yourlibname.so:system/lib64/yourlibname.so \ 

• It will add app dependent libraries in AOSP. Now when you add your Pre-built apk in AOSP it will work

Create a folder in packages/app/yourappfolder and paste APK and make file there

This should be your make file

# Adding Apk as system app in AOSP
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := Appname # It should be your apk name, and folder name should also be same 
LOCAL_SRC_FILES := $(LOCAL_MODULE).apk
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_SUFFIX := .apk
LOCAL_MODULE_CLASS := APPS
LOCAL_CERTIFICATE := platform
include $(BUILD_PREBUILT)