..
  Copyright 1988-2022 Free Software Foundation, Inc.
  This is part of the GCC manual.
  For copying conditions, see the copyright.rst file.

.. _openacc-environment-variables:

OpenACC Environment Variables
-----------------------------

The variables :envvar:`ACC_DEVICE_TYPE` and :envvar:`ACC_DEVICE_NUM`
are defined by section 4 of the OpenACC specification in version 2.0.
The variable :envvar:`ACC_PROFLIB`
is defined by section 4 of the OpenACC specification in version 2.6.
The variable :envvar:`GCC_ACC_NOTIFY` is used for diagnostic purposes.

.. toctree::
  :maxdepth: 2

  openacc-environment-variables/accdevicetype
  openacc-environment-variables/accdevicenum
  openacc-environment-variables/accproflib
  openacc-environment-variables/gccaccnotify