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doc: add missing setup documentation for ARC MWDT toolchain

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ARC MWDT toolchain setup documentation was missing on upstreaming.
Fix that.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
This commit is contained in:
Eugeniy Paltsev 2020-09-29 21:00:13 +03:00 • committed by Carles Cufí
commit 1ae2b7cad9
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33
doc/getting_started/toolchain_3rd_party_x_compilers.rst
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@ -51,6 +51,39 @@ GNU ARM Embedded
C:\gnu_arm_embedded
DesignWare ARC MetaWare Development Toolkit (MWDT)
**************************************************
#. You need to have `ARC MWDT
<https://www.synopsys.com/dw/ipdir.php?ds=sw_metaware>`_ installed on your
host.
#. :ref:`Set these environment variables <env_vars>`:
- Set :envvar:`ZEPHYR_TOOLCHAIN_VARIANT` to ``arcmwdt``.
- Set :envvar:`ARCMWDT_TOOLCHAIN_PATH` to the toolchain installation
directory. MWDT installation provides :envvar:`METAWARE_ROOT` so simply set
:envvar:`ARCMWDT_TOOLCHAIN_PATH` to ``$METAWARE_ROOT/../`` (Linux)
or ``%METAWARE_ROOT%\..\`` (Windows)
#. To check that you have set these variables correctly in your current
environment, follow these example shell sessions (the
:envvar:`ARCMWDT_TOOLCHAIN_PATH` values may be different on your system):
.. code-block:: console
# Linux:
$ echo $ZEPHYR_TOOLCHAIN_VARIANT
arcmwdt
$ echo $ARCMWDT_TOOLCHAIN_PATH
/home/you/ARC/MWDT_2019.12/
# Windows
> echo %ZEPHYR_TOOLCHAIN_VARIANT%
arcmwdt
> echo %ARCMWDT_TOOLCHAIN_PATH%
C:\ARC\MWDT_2019.12\
Crosstool-NG
************