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# llama_cpp

C+ bindings for [llama.cpp](https://github.com/ggml-org/llama.cpp)'s C API, in
two layers:

- **Raw FFI** generated straight from the upstream headers with
  [`cpc-bindgen`](/docs/tooling) (`build.sh`), so the binding tracks the C API
  rather than reimplementing it.
- **A hand-written safe facade** — `Session`, with `load` / `generate` /
  `tokenize` / `decode` / `sample` — over that raw layer, so day-to-day use is
  ownership-safe C+ rather than raw pointers.

It links `libllama` and `libmtmd`. Rather than baking an absolute path into the
manifest, the `[link]` search-path reads an environment variable, so the same
binding works on any machine that points `LLAMA_CPP_LIB` at its own build:

```toml
[link]
search-paths = ["${LLAMA_CPP_LIB}"]
```

See [Modules & packages](/docs/modules-and-packages) for the `[link]` table and
`${VAR}` expansion. The `llama_cpp_smoke` recipe is **verified end to end**: it
links against a current llama.cpp and runs real text generation on the Metal GPU
(gemma-4-E2B). This is the runnable counterpart to the [field journal on porting
ggml to C+](/blog/porting-llama-cpp-ggml-core-to-cplus).
