Step 3 : Acquisition of software packages
=========================================

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   .. tab-item:: Acquisition of software packages

        * In this program, you are going to learn


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                * How to ?


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        Topics in this section,

                * :ref:`Steps for Acquisition of software packages <Rt-Thread_qemu_ARM-vexpress-A9_step3_0>`


.. _Rt-Thread_qemu_ARM-vexpress-A9_step3_0:

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   .. tab-item:: Acquisition Steps

        * Configure the environment variable using below command:

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                $ source ~/.env/env.sh

        * Now use "scons --menuconfig" command to enter menuconfig, and you could select the online packages by this time.

        .. code-block:: c

                $ scons --menuconfig

        * Select "RT-Thread online packages --->" from the menu.

        * Inside "RT-Thread online packages --->", go to "miscellaneous packages".

        * In "miscellaneous packages", go to "samples: kernel and components samples" and press Enter.

        * In "samples: kernel and components samples", go to "a kernel_samples package for rt-thread  --->" and press 'y' to enable it.

        * In "a kernel_samples package for rt-thread  --->", enable  "[kernel] semphore" as shown below:

        .. code-block:: c

                [*]   [kernel] semaphore

        * Then 'save' new configuration and 'exit'.

        * Go back to "miscellaneous packages" and enable "Hello: A example package"

        * 'save' new configuration and 'exit' from the menuconfig.

        * Once you have selected an online package, download the package to the packages folder in the BSP directory using the below command:

        .. code-block:: c

                $ pkgs --update


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