| .. _toolchain_designware_arc_mwdt: |
| |
| 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) |
| |
| .. note:: |
| Even though ARC MWDT compiler is used for Zephyr RTOS sources compilation, still the GNU |
| preprocessor & GNU objcopy might be used for some steps like DTS preprocessing and ``.bin`` |
| file generation. Hence we need to have either ARC or host GNU tools in :envvar:`PATH`. |
| Currently Zephyr looks for: |
| |
| * objcopy binaries: ``arc-elf32-objcopy`` or ``arc-linux-objcopy`` or ``objcopy`` |
| * gcc binaries: ``arc-elf32-gcc`` or ``arc-linux-gcc`` or ``gcc`` |
| |
| This list can be extended or modified in future. |
| |
| #. 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\ |
