Unable to load libtor.so

[nns52k]

Does anyone encounter the same problem unable to load libtor.so, when flutter run?

Unhandled Exception: Invalid argument(s): Failed to load dynamic library 'libtor.so': dlopen failed: cannot locate symbol "__extenddftf2" referenced by "/data/app/~~rTNkc4SQHo-7fdh2bp_IVA==/com.example.flutter_project1-DWd49BnV_9C021gZ0N8MVQ==/lib/x86_64/libtor.so"...

I was able to run the official example ~/.pub-cache/hosted/pub.dev/tor-0.0.3/example/ that came with this Flutter package tor without any problem, but running the same example in my new PC, that has newer versions of everything, I got the error mentioned.

These are my tools that built the Android app that has the runtime error mentioned:

• Flutter version: 3.19.6
• Dart version: 3.3.4
• Rust & Cargo version: 1.77.2
• Cargo NDK version: 3.5.4
• Linux distro: MX-23.2_x64 Libretto January 21, 2024

By the way, the instruction in GitHub - Foundation-Devices/tor: Tor plugin for Flutter is kind of confusing.

1. Is pulling Cargokit into our Flutter project still a prerequsite, since these is ~/.pub-cache/hosted/pub.dev/tor-0.0.3/cargokit that came with Flutter package tor-0.0.3?
2. Will it be more clear if we change "To (re)generate Dart bindings run just generate" to "To (re)generate Dart bindings, run just generate"?

[nns52k]

Fix missing __extenddftf2 symbols for x86-64 targets by adzialocha · Pull Request #21 · p2panda/meli seems to be a work-around, but I'm not sure because I know very little about Rust. Need help from Rust programmers on this.

[nns52k]

According to flutter run fails on x86_64 emulator · Issue #553 · breez/c-breez, this "cannot locate symbol "__extenddftf2"" error only happens when an app run on an Android x86_64 image.

The issue doesn't exist on ARM (running the app on a connected physical Android) or just x86 emulator images.

I just tried running the tor-0.0.3 example on an Android x86 image, and it worked. No "cannot locate symbol "__extenddftf2"" happened.

[yshwanth]

How many build types it took android in example app ? Also how much total size of build folder ?

[nns52k]

How many build types it took android in example app ? Also how much total size of build folder ?

It looks like Android NDK builds 2 libtor.so files. One is for x86_64, and another for x86.

The size of build/ folder is 6.1 GiB, if my memory is correct. I usually create the folder in a RAM disk, so as not to torture my storage device too much. It's said that too much heavy I/O operations would shorten the lifespan of the device, regardless SSD or HDD.

[sneurlax]

@nns52k how's it working for you lately?