.. default-domain:: chpl

.. module:: ChapelEnv
   :synopsis: Access to Chapel Environment Variables

ChapelEnv
=========
.. note::

   All Chapel programs automatically ``use`` this module by default.
   An explicit ``use`` statement is not necessary.



Access to Chapel Environment Variables

The values of Chapel's environment variables upon compile time are
accessible through the built-in parameters shown below. This information
can also be displayed from the command line by executing the compiled
program with the ``--about`` flag.

 

.. data:: param CHPL_HOME: string

   See :ref:`readme-chplenv.CHPL_HOME` for more information. 

.. data:: param CHPL_AUX_FILESYS: string

   Deprecated 

.. data:: param CHPL_TARGET_PLATFORM: string

   See :ref:`readme-chplenv.CHPL_TARGET_PLATFORM` for more information. 

.. data:: param CHPL_HOST_PLATFORM: string

   See :ref:`readme-chplenv.CHPL_HOST_PLATFORM` for more information. 

.. data:: param CHPL_HOST_ARCH: string

   See :ref:`readme-chplenv.CHPL_HOST_ARCH` for more information. 

.. data:: param CHPL_HOST_COMPILER: string

   See :ref:`readme-chplenv.CHPL_COMPILER` for more information. 

.. data:: param CHPL_TARGET_COMPILER: string

   See :ref:`readme-chplenv.CHPL_COMPILER` for more information. 

.. data:: param CHPL_TARGET_ARCH: string

   See :ref:`readme-chplenv.CHPL_TARGET_ARCH` for more information. 

.. data:: param CHPL_TARGET_CPU: string

   See :ref:`readme-chplenv.CHPL_TARGET_CPU` for more information. 

.. data:: param CHPL_LOCALE_MODEL: string

   See :ref:`readme-chplenv.CHPL_LOCALE_MODEL` for more information. 

.. data:: param CHPL_COMM: string

   See :ref:`readme-chplenv.CHPL_COMM` for more information. 

.. data:: param CHPL_COMM_SUBSTRATE: string

   See :ref:`readme-launcher` for more information. 

.. data:: param CHPL_GASNET_SEGMENT: string

   See :ref:`readme-multilocale` for more information. 

.. data:: param CHPL_TASKS: string

   See :ref:`readme-chplenv.CHPL_TASKS` for more information. 

.. data:: param CHPL_LAUNCHER: string

   See :ref:`readme-chplenv.CHPL_LAUNCHER` for more information. 

.. data:: param CHPL_TIMERS: string

   See :ref:`readme-chplenv.CHPL_TIMERS` for more information. 

.. data:: param CHPL_UNWIND: string

   See :ref:`readme-chplenv.CHPL_UNWIND` for more information. 

.. data:: param CHPL_MEM: string

   See :ref:`readme-chplenv.CHPL_MEM` for more information. 

.. data:: param CHPL_MAKE: string

   See :ref:`readme-chplenv.CHPL_MAKE` for more information. 

.. data:: param CHPL_ATOMICS: string

   See :ref:`readme-chplenv.CHPL_ATOMICS` for more information. 

.. data:: param CHPL_NETWORK_ATOMICS: string

   See :ref:`readme-atomics` for more information. 

.. data:: param CHPL_GMP: string

   See :ref:`readme-chplenv.CHPL_GMP` for more information. 

.. data:: param CHPL_HWLOC: string

   See :ref:`readme-chplenv.CHPL_HWLOC` for more information. 

.. data:: param CHPL_REGEXP: string

   See :ref:`readme-chplenv.CHPL_REGEXP` for more information. 

.. data:: param CHPL_LLVM: string

   See :ref:`readme-chplenv.CHPL_LLVM` for more information.