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.. * Copyright 2020-2021 Intel Corporation
.. *
.. * Licensed under the Apache License, Version 2.0 (the "License");
.. * you may not use this file except in compliance with the License.
.. * You may obtain a copy of the License at
.. *
.. *     http://www.apache.org/licenses/LICENSE-2.0
.. *
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.. * distributed under the License is distributed on an "AS IS" BASIS,
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Undeclared identifier ``CL_DEVICE_IL_VERSION_KHR``
**************************************************

When you build an application with |short_name|, you might encounter the following problem:

.. code-block:: text

    error: use of undeclared identifier CL_DEVICE_IL_VERSION_KHR

This is caused by a bug in |dpcpp| 2021.1-beta06 release.

How to fix
----------

The workaround for this issue is to set ``CPLUS_INCLUDE_PATH`` as follows:

.. code-block:: bash

    export CPLUS_INCLUDE_PATH="$DPCPP_ROOT/compiler/latest/linux/include/sycl"