isar community fails on 16 KB page size Android images (even with legacy packaging enabled)

[JakobLichterfeld]

Steps to Reproduce

Using a Android Emulator with an image of Type 16 KB Page Size Google APIs PlayStore and Using legacy packaging as suggested by Google results in the following exception:

IsarError (IsarError: Could not initialize IsarCore library for processor architecture "android_arm64". If you create a Flutter app, make sure to add isar_flutter_libs to your dependencies.
Invalid argument(s): Failed to load dynamic library 'libisar.so': dlopen failed: empty/missing DT_HASH/DT_GNU_HASH in "/data/app/<redacted>/lib/arm64/libisar.so" (new hash type from the future?))

without legacy packaging the app fails to install on those images.

(Other images without 16KB page size run fine)

Code sample

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:isar/isar.dart';
import 'package:path_provider/path_provider.dart';

void main() {
  final dir = await getApplicationDocumentsDirectory();
  final isar = await Isar.open(
    [UserSchema],
    directory: dir.path,
  );

  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text('Hello World!'),
        ),
      ),
    );
  }
}

Details

• Platform: Android Emulator with an image of Type 16 KB Page Size Google APIs PlayStore
• Flutter version: 3.27.3
• Isar-community version: 3.1.8

---

• I searched for similar issues already
• I filled the details section with the exact device model and version
• I am able to provide a reproducible example

[JakobLichterfeld]

Updating:

• Gradle to 8.7
• AGP to 8.6.1
• KGP to 2.1.0

didn't help as well

[JakobLichterfeld]

This seems to be related with a potential fix: getsentry/sentry-dart#2237

The page sizes are aligned for our Android dependency, but we need to check Isar and SQLite dependencies.

And

I updated our sample app to support 16kb pages by bumping NDK to 27 and updating the app/build.gradle as described in here . I works on a 16KB emulator device, also with our Isar and SQFlite packages.  

-> https://developer.android.com/guide/practices/page-sizes#compile-r27

[JakobLichterfeld]

No success with:

android {
  ...
  ndkVersion = "28.0.12916984"
  ...
  defaultConfig {
    ...
    // This block is different from the one you use to link Gradle
    // to your CMake or ndk-build script.
    externalNativeBuild {
      // For ndk-build, instead use the ndkBuild block.
      cmake {
        // Passes optional arguments to CMake.
        arguments "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON"
      }
    }
  }
}