Step 1 : Install ARM tool-chain
===============================

.. tab-set::

   .. tab-item:: Install ARM tool-chain

        * In this program, you are going to learn


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                * How to ?


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        Topics in this section,

                * :ref:`Download AArch64 ELF bare-metal target (aarch64-none-elf) <barelinux_rpi_3b_step3_0>`


.. _barelinux_rpi_3b_step3_0:

.. tab-set::

   .. tab-item:: Download AArch64 ELF bare-metal target (aarch64-none-elf)

        * Make sure current dir is $HOME
        
        .. code-block:: c

                $ cd $HOME
 
        * To download AArch64 ELF bare-metal target use the below link,

                * `AArch64 ELF bare-metal target <https://developer.arm.com/downloads/-/gnu-a>`_

        * Alternatively download using wget command

        .. code-block:: c

                $ wget https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz

        * To extract or unzip files from tar.gz files, use the below command.

        .. code-block:: c

                $ tar -xvf gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz

        * Open the .bashrc file

        .. code-block:: c

                $ vim ~/.bashrc

        * At the end give the path of tool-chain that we downloaded before, using the export. Replace the $HOME with the actual path.

        .. code-block:: c

                export PATH=$PATH:$HOME/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf/bin

        * Use below command to reflect the changes in the .bashrc file

        .. code-block:: c

                $ source ~/.bashrc



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        What is /.bashrc file?

        .. dropdown:: See Answer

                * ??