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.. _issue_level_zero:

Level Zero runtime dependency
*****************************

When you build an application with |short_name| on Linux\*, you might encounter the following error:

.. code-block:: text

    fatal error: 'level_zero/ze_api.h' file not found

This means that you do not have Level Zero in your environment.

.. include:: includes/note-refer-to-dpcpp-level-zero.rst

How to Fix
----------

There are two ways to fix this:

- Change your driver version to the one with Level Zero support.
- Compile your application without Level Zero support:

    1. Use ``DAAL_DISABLE_LEVEL_ZERO`` define:

       .. code-block:: cpp

         #define DAAL_DISABLE_LEVEL_ZERO

    2. Disable Level Zero runtime:

       .. code-block:: bash

         export SYCL_BE=PI_OPENCL