# --8<-- [start:installation]

vLLM has experimental support for macOS with Apple Silicon. For now, users must build from source to natively run on macOS.

Currently the CPU implementation for macOS supports FP32 and FP16 datatypes.

!!! warning
    There are no pre-built wheels or images for this device, so you must build vLLM from source.

# --8<-- [end:installation]
# --8<-- [start:requirements]

- OS: `macOS Sonoma` or later
- SDK: `XCode 15.4` or later with Command Line Tools
- Compiler: `Apple Clang >= 15.0.0`

# --8<-- [end:requirements]
# --8<-- [start:set-up-using-python]

# --8<-- [end:set-up-using-python]
# --8<-- [start:pre-built-wheels]

# --8<-- [end:pre-built-wheels]
# --8<-- [start:build-wheel-from-source]

After installation of XCode and the Command Line Tools, which include Apple Clang, execute the following commands to build and install vLLM from source.

```bash
git clone https://github.com/vllm-project/vllm.git
cd vllm
uv pip install -r requirements/cpu.txt
uv pip install -e .
```

!!! note
    On macOS the `VLLM_TARGET_DEVICE` is automatically set to `cpu`, which is currently the only supported device.

!!! example "Troubleshooting"
    If the build fails with errors like the following where standard C++ headers cannot be found, try to remove and reinstall your
    [Command Line Tools for Xcode](https://developer.apple.com/download/all/).

    ```text
    [...] fatal error: 'map' file not found
            1 | #include <map>
                |          ^~~~~
        1 error generated.
        [2/8] Building CXX object CMakeFiles/_C.dir/csrc/cpu/pos_encoding.cpp.o

    [...] fatal error: 'cstddef' file not found
            10 | #include <cstddef>
                |          ^~~~~~~~~
        1 error generated.
    ```

# --8<-- [end:build-wheel-from-source]
# --8<-- [start:pre-built-images]

# --8<-- [end:pre-built-images]
# --8<-- [start:build-image-from-source]

# --8<-- [end:build-image-from-source]
# --8<-- [start:extra-information]
# --8<-- [end:extra-information]
