Bindings generator for Scala 3 Native

Distributed as a SBT plugin and a CLI program, this project generates idiomatic Scala 3 Native bindings to C libraries.

• Documentation
• Template
• Sample bindings and usage examples - Postgres, Sqlite, Tree Sitter, cJSON, Git, Lua, Redis, RocksDB, DuckDB, libuv, Cmark, s2, OpenSSL, etc.

Status (February 2023): project is actively maintained, CLI interface is considered more stable than the interface in build tool plugins, but both aren't guaranteed to not change until v0.1.0

• Generates glue C code to work around Scala Native's missing interop features
• Strongly typed (where possible) interfaces to structs, unions, and functions
• Supports named enums
• Collects unnamed enums into a single location
• Extra flags to work around compiler deficiencies

FAQ:

• Generated bindings do not run on the JVM, only on Scala Native
• In cases where Scala Native cannot encode certain C idioms, glue C code is generated
• The generator itself is implemented in Scala 3 Native with some C glue code to libclang
• Only C header files are supported

• Due to lack of Apple M1 runners, I am not able to build binaries for that platform. For local work, you can checkout the repo at the version you want and run

  $ sbt devPublish

  Which will build the binary for your platform and publish it locally