How can we prebuilt 3rd app to android ROM

Question

I'm try to prebuilt Facebook to my ROM in two way Android.mk file like below. But Facebook till does not work ...

1. try this way

my_archs:=arm arm64

my_src_arch :=$(call get-prebuilt-src-arch,$(my_archs))

LOCAL_PREBUILT_JNI_LIBS :=@lib/armeabi-v7a/*.so

LOCAL_MODULE_TARGET_ARCH :=arm

• Not any .so lib under /system/lib/ or system/3rdapp/Facebook/lib/

  Log show us that dlopen failed: "/data/data/com.facebook.katana/lib-main/libgnustl_shared.so" is 32-bit instead of 64-bit

2. try this(extra the so lib from apk file )

my_archs:=arm arm64

my_src_arch :=$(call get-prebuilt-src-arch,$(my_archs))

LOCAL_PREBUILT_JNI_LIBS :=lib/armeabi-v7a/1.so lib/armeabi-v7a/2.so

LOCAL_MODULE_TARGET_ARCH :=arm

• so lib will be copy to /system/3rdapp/Facebook/lib success,However,PMS parser failed cause by NativeLibraryHelper

  I NativeLibraryHelper: Couldn't open temporary file name: /system/3rdapp/Facebook/lib/arm/tmp.regBEn: Read-only file system W PackageManager: Failed to scan /system/3rdapp/Facebook: Error unpackaging native libs for app, errorCode=-18

error code define in PackageManager.java

/** * Installation return code: this is passed to the * {@link IPackageInstallObserver} if a secure container mount point * couldn't be accessed on external media. * * @hide */ @SystemApi public static final int INSTALL_FAILED_CONTAINER_ERROR = -18;

I have dump dumpsys package com.facebook.kanta,show Instruction Set: arm64

Question

1、How can I prebuild Facebook to my rom?such Facebook..

2、Why does Facebook running arm64?(LOCAL_MODULE_TARGET_ARCH does not be used?)