TDLib, built from source

VueGram talks to Telegram through TDLib, Telegram's own client library. The native library and its Java bindings in this repository are built from TDLib's own source, so anyone can check them.

What is built

• app/src/main/jniLibs/<abi>/libtdjni.so, for armeabi-v7a and arm64-v8a
• the Java bindings in app/src/main/java/org/drinkless/tdlib/

They are built with TDLib's own Android Dockerfile (Ubuntu 24.04, Android NDK r23c, OpenSSL 1.1.1w), at commit cb863c16.

Build it yourself

scripts/build-tdlib.sh            # or: scripts/build-tdlib.sh <another TDLib commit>

It needs Docker. The first run downloads about 2 GB and compiles for about half an hour.

Checksums

The files it produced for this repository:

File	SHA-256
armeabi-v7a/libtdjni.so	8e45fddeaac6fb3b76d141c8e9822646901aa4f31c261560f84bb3ab373043a4
arm64-v8a/libtdjni.so	0ccdc1f6548cbb582bc2617a5f5206224a21349cbd9d12739f83e5f210393d70

Why it was rebuilt

VueGram started from Tele, which shipped a prebuilt libtdjni.so (armeabi-v7a only) that could not be checked. It was replaced with this build: the same TDLib commit, so TdApi.java and Client.java came out byte for byte identical to Tele's, and the native methods the library registers are the same.

Rules

• Never rename or move org.drinkless.tdlib. The native libtdjni.so binds to these exact class names.
• Never drop in a prebuilt .so from elsewhere. Build it with scripts/build-tdlib.sh, and update the checksums here and in the README.