55 lines
2.2 KiB
ReStructuredText
55 lines
2.2 KiB
ReStructuredText
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.. _toolchain_armclang:
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Arm Compiler 6
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##############
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#. Download and install a development suite containing the `Arm Compiler 6`_
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for your operating system.
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#. :ref:`Set these environment variables <env_vars>`:
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- Set :envvar:`ZEPHYR_TOOLCHAIN_VARIANT` to ``armclang``.
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- Set :envvar:`ARMCLANG_TOOLCHAIN_PATH` to the toolchain installation
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directory.
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#. The Arm Compiler 6 needs the :envvar:`ARMLMD_LICENSE_FILE` environment
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variable to point to your license file or server.
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For example:
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.. code-block:: bash
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# Linux, macOS, license file:
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export ARMLMD_LICENSE_FILE=/<path>/license_armds.dat
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# Linux, macOS, license server:
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export ARMLMD_LICENSE_FILE=8224@myserver
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.. code-block:: batch
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# Windows, license file:
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set ARMLMD_LICENSE_FILE=c:\<path>\license_armds.dat
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# Windows, license server:
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set ARMLMD_LICENSE_FILE=8224@myserver
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#. If the Arm Compiler 6 was installed as part of an Arm Development Studio, then
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you must set the :envvar:`ARM_PRODUCT_DEF` to point to the product definition file:
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See also: `Product and toolkit configuration <https://developer.arm.com/tools-and-software/software-development-tools/license-management/resources/product-and-toolkit-configuration>`_.
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For example if the Arm Development Studio is installed in:
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``/opt/armds-2020-1`` with a Gold license, then set :envvar:`ARM_PRODUCT_DEF`
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to point to ``/opt/armds-2020-1/gold.elmap``.
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.. note::
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The Arm Compiler 6 uses ``armlink`` for linking. This is incompatible
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with Zephyr's linker script template, which works with GNU ld. Zephyr's
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Arm Compiler 6 support Zephyr's CMake linker script generator, which
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supports generating scatter files. Basic scatter file support is in
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place, but there are still areas covered in ld templates which are not
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fully supported by the CMake linker script generator.
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Some Zephyr subsystems or modules may also contain C or assembly code
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that relies on GNU intrinsics and have not yet been updated to work fully
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with ``armclang``.
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.. _Arm Compiler 6: https://developer.arm.com/tools-and-software/embedded/arm-compiler/downloads/version-6
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