42 lines
1.3 KiB
ReStructuredText
42 lines
1.3 KiB
ReStructuredText
Crosstool-NG
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############
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You can build toolchains from source code using crosstool-NG.
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#. Follow the steps on the crosstool-NG website to `prepare your host
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<http://crosstool-ng.github.io/docs/os-setup/>`_.
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#. Follow the `Zephyr SDK with Crosstool NG instructions
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<https://github.com/zephyrproject-rtos/sdk-ng/blob/master/README.md>`_ to
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build your toolchain. Repeat as necessary to build toolchains for multiple
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target architectures.
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You will need to clone the ``sdk-ng`` repo and run the following command:
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.. code-block:: console
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./go.sh <arch>
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.. note::
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Currently, only i586 and Arm toolchain builds are verified.
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#. :ref:`Set these environment variables <env_vars>`:
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- Set :envvar:`ZEPHYR_TOOLCHAIN_VARIANT` to ``xtools``.
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- Set :envvar:`XTOOLS_TOOLCHAIN_PATH` to the toolchain build directory.
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#. To check that you have set these variables correctly in your current
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environment, follow these example shell sessions (the
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:envvar:`XTOOLS_TOOLCHAIN_PATH` values may be different on your system):
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.. code-block:: console
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# Linux, macOS:
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$ echo $ZEPHYR_TOOLCHAIN_VARIANT
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xtools
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$ echo $XTOOLS_TOOLCHAIN_PATH
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/Volumes/CrossToolNGNew/build/output/
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.. _crosstool-ng site: http://crosstool-ng.org
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