poky/documentation/ref-manual/system-requirements.rst - mdmillerii/openbmc - Gitiles

 .. SPDX-License-Identifier: CC-BY-SA-2.0-UK

 *******************
 System Requirements
 *******************

 Welcome to the Yocto Project Reference Manual! This manual provides
 reference information for the current release of the Yocto Project, and
 is most effectively used after you have an understanding of the basics
 of the Yocto Project. The manual is neither meant to be read as a
 starting point to the Yocto Project, nor read from start to finish.
 Rather, use this manual to find variable definitions, class
 descriptions, and so forth as needed during the course of using the
 Yocto Project.

 For introductory information on the Yocto Project, see the
 :yocto_home:`Yocto Project Website <>` and the
 ":ref:`overview-manual/development-environment:the yocto project development environment`"
 chapter in the Yocto Project Overview and Concepts Manual.

 If you want to use the Yocto Project to quickly build an image without
 having to understand concepts, work through the
 :doc:`/brief-yoctoprojectqs/index` document. You can find "how-to"
 information in the :doc:`/dev-manual/index`. You can find Yocto Project overview
 and conceptual information in the :doc:`/overview-manual/index`.

 .. note::

    For more information about the Yocto Project Documentation set, see
    the :ref:`ref-manual/resources:links and related documentation` section.

 .. _detailed-supported-distros:

 Supported Linux Distributions
 =============================

 Currently, the Yocto Project is supported on the following
 distributions:

 -  Ubuntu 16.04 (LTS)

 -  Ubuntu 18.04 (LTS)

 -  Ubuntu 20.04

 -  Fedora 30

 -  Fedora 31

 -  Fedora 32

 -  CentOS 7.x

 -  CentOS 8.x

 -  Debian GNU/Linux 8.x (Jessie)

 -  Debian GNU/Linux 9.x (Stretch)

 -  Debian GNU/Linux 10.x (Buster)

 -  openSUSE Leap 15.1


 .. note::

    -  While the Yocto Project Team attempts to ensure all Yocto Project
       releases are one hundred percent compatible with each officially
       supported Linux distribution, instances might exist where you
       encounter a problem while using the Yocto Project on a specific
       distribution.

    -  Yocto Project releases are tested against the stable Linux
       distributions in the above list. The Yocto Project should work
       on other distributions but validation is not performed against
       them.

    -  In particular, the Yocto Project does not support and currently
       has no plans to support rolling-releases or development
       distributions due to their constantly changing nature. We welcome
       patches and bug reports, but keep in mind that our priority is on
       the supported platforms listed below.

    -  You may use Windows Subsystem For Linux v2 to set up a build host
       using Windows 10, but validation is not performed against build
       hosts using WSLv2.

    -  The Yocto Project is not compatible with WSLv1, it is
       compatible but not officially supported nor validated with
       WSLv2, if you still decide to use WSL please upgrade to WSLv2.

    -  If you encounter problems, please go to :yocto_bugs:`Yocto Project
       Bugzilla <>` and submit a bug. We are
       interested in hearing about your experience. For information on
       how to submit a bug, see the Yocto Project
       :yocto_wiki:`Bugzilla wiki page </Bugzilla_Configuration_and_Bug_Tracking>`
       and the ":ref:`dev-manual/common-tasks:submitting a defect against the yocto project`"
       section in the Yocto Project Development Tasks Manual.


 Required Packages for the Build Host
 ====================================

 The list of packages you need on the host development system can be
 large when covering all build scenarios using the Yocto Project. This
 section describes required packages according to Linux distribution and
 function.

 .. _ubuntu-packages:

 Ubuntu and Debian
 -----------------

 The following list shows the required packages by function given a
 supported Ubuntu or Debian Linux distribution:

 .. note::

    -  If your build system has the ``oss4-dev`` package installed, you
       might experience QEMU build failures due to the package installing
       its own custom ``/usr/include/linux/soundcard.h`` on the Debian
       system. If you run into this situation, either of the following
       solutions exist:
       ::

          $ sudo apt-get build-dep qemu
          $ sudo apt-get remove oss4-dev

    -  For Debian-8, ``python3-git`` and ``pylint3`` are no longer
       available via ``apt-get``.
       ::

          $ sudo pip3 install GitPython pylint==1.9.5

 -  *Essentials:* Packages needed to build an image on a headless system:
    ::

       $ sudo apt-get install &UBUNTU_HOST_PACKAGES_ESSENTIAL;

 -  *Documentation:* Packages needed if you are going to build out the
    Yocto Project documentation manuals:
    ::

       $ sudo apt-get install make python3-pip
       &PIP3_HOST_PACKAGES_DOC;

    .. note::

       It is currently not possible to build out documentation from Debian 8
       (Jessie) because of outdated ``pip3`` and ``python3``. ``python3-sphinx``
       is too outdated.

 Fedora Packages
 ---------------

 The following list shows the required packages by function given a
 supported Fedora Linux distribution:

 -  *Essentials:* Packages needed to build an image for a headless
    system:
    ::

       $ sudo dnf install &FEDORA_HOST_PACKAGES_ESSENTIAL;

 -  *Documentation:* Packages needed if you are going to build out the
    Yocto Project documentation manuals:
    ::

       $ sudo dnf install make python3-pip which
       &PIP3_HOST_PACKAGES_DOC;

 openSUSE Packages
 -----------------

 The following list shows the required packages by function given a
 supported openSUSE Linux distribution:

 -  *Essentials:* Packages needed to build an image for a headless
    system:
    ::

       $ sudo zypper install &OPENSUSE_HOST_PACKAGES_ESSENTIAL;

 -  *Documentation:* Packages needed if you are going to build out the
    Yocto Project documentation manuals:
    ::

       $ sudo zypper install make python3-pip which
       &PIP3_HOST_PACKAGES_DOC;


 CentOS-7 Packages
 -----------------

 The following list shows the required packages by function given a
 supported CentOS-7 Linux distribution:

 -  *Essentials:* Packages needed to build an image for a headless
    system:
    ::

       $ sudo yum install &CENTOS7_HOST_PACKAGES_ESSENTIAL;

    .. note::

       -  Extra Packages for Enterprise Linux (i.e. ``epel-release``) is
          a collection of packages from Fedora built on RHEL/CentOS for
          easy installation of packages not included in enterprise Linux
          by default. You need to install these packages separately.

       -  The ``makecache`` command consumes additional Metadata from
          ``epel-release``.

 -  *Documentation:* Packages needed if you are going to build out the
    Yocto Project documentation manuals:
    ::

       $ sudo yum install make python3-pip which
       &PIP3_HOST_PACKAGES_DOC;

 CentOS-8 Packages
 -----------------

 The following list shows the required packages by function given a
 supported CentOS-8 Linux distribution:

 -  *Essentials:* Packages needed to build an image for a headless
    system:
    ::

       $ sudo dnf install &CENTOS8_HOST_PACKAGES_ESSENTIAL;

    .. note::

       -  Extra Packages for Enterprise Linux (i.e. ``epel-release``) is
          a collection of packages from Fedora built on RHEL/CentOS for
          easy installation of packages not included in enterprise Linux
          by default. You need to install these packages separately.

       -  The ``PowerTools`` repo provides additional packages such as
          ``rpcgen`` and ``texinfo``.

       -  The ``makecache`` command consumes additional Metadata from
          ``epel-release``.

 -  *Documentation:* Packages needed if you are going to build out the
    Yocto Project documentation manuals:
    ::

       $ sudo dnf install make python3-pip which
       &PIP3_HOST_PACKAGES_DOC;

 Required Git, tar, Python and gcc Versions
 ==========================================

 In order to use the build system, your host development system must meet
 the following version requirements for Git, tar, and Python:

 -  Git &MIN_GIT_VERSION; or greater

 -  tar &MIN_TAR_VERSION; or greater

 -  Python &MIN_PYTHON_VERSION; or greater

 If your host development system does not meet all these requirements,
 you can resolve this by installing a ``buildtools`` tarball that
 contains these tools. You can get the tarball one of two ways: download
 a pre-built tarball or use BitBake to build the tarball.

 In addition, your host development system must meet the following
 version requirement for gcc:

 -  gcc &MIN_GCC_VERSION; or greater

 If your host development system does not meet this requirement, you can
 resolve this by installing a ``buildtools-extended`` tarball that
 contains additional tools, the equivalent of the Debian/Ubuntu ``build-essential``
 package.

 In the sections that follow, three different methods will be described for
 installing the ``buildtools`` or ``buildtools-extended`` toolset.

 Installing a Pre-Built ``buildtools`` Tarball with ``install-buildtools`` script
 --------------------------------------------------------------------------------

 The ``install-buildtools`` script is the easiest of the three methods by
 which you can get these tools. It downloads a pre-built buildtools
 installer and automatically installs the tools for you:

 1. Execute the ``install-buildtools`` script. Here is an example:
    ::

       $ cd poky
       $ scripts/install-buildtools --without-extended-buildtools \
         --base-url &YOCTO_DL_URL;/releases/yocto \
         --release yocto-&DISTRO; \
         --installer-version &DISTRO;

    During execution, the buildtools tarball will be downloaded, the
    checksum of the download will be verified, the installer will be run
    for you, and some basic checks will be run to make sure the
    installation is functional.

    To avoid the need of ``sudo`` privileges, the ``install-buildtools``
    script will by default tell the installer to install in:
    ::

       /path/to/poky/buildtools

    If your host development system needs the additional tools provided
    in the ``buildtools-extended`` tarball, you can instead execute the
    ``install-buildtools`` script with the default parameters:
    ::

       $ cd poky
       $ scripts/install-buildtools

 2. Source the tools environment setup script by using a command like the
    following:
    ::

       $ source /path/to/poky/buildtools/environment-setup-x86_64-pokysdk-linux

    Of course, you need to supply your installation directory and be sure to
    use the right file (i.e. i586 or x86_64).

    After you have sourced the setup script, the tools are added to
    ``PATH`` and any other environment variables required to run the
    tools are initialized. The results are working versions versions of
    Git, tar, Python and ``chrpath``. And in the case of the
    ``buildtools-extended`` tarball, additional working versions of tools
    including ``gcc``, ``make`` and the other tools included in
    ``packagegroup-core-buildessential``.

 Downloading a Pre-Built ``buildtools`` Tarball
 ----------------------------------------------

 If you would prefer not to use the ``install-buildtools`` script, you can instead
 download and run a pre-built buildtools installer yourself with the following
 steps:

 1. Locate and download the ``*.sh`` at &YOCTO_RELEASE_DL_URL;/buildtools/

 2. Execute the installation script. Here is an example for the
    traditional installer:
    ::

       $ sh ~/Downloads/x86_64-buildtools-nativesdk-standalone-&DISTRO;.sh

    Here is an example for the extended installer:
    ::

       $ sh ~/Downloads/x86_64-buildtools-extended-nativesdk-standalone-&DISTRO;.sh

    During execution, a prompt appears that allows you to choose the
    installation directory. For example, you could choose the following:
    ``/home/your-username/buildtools``

 3. Source the tools environment setup script by using a command like the
    following:
    ::

       $ source /home/your_username/buildtools/environment-setup-i586-poky-linux

    Of
    course, you need to supply your installation directory and be sure to
    use the right file (i.e. i585 or x86-64).

    After you have sourced the setup script, the tools are added to
    ``PATH`` and any other environment variables required to run the
    tools are initialized. The results are working versions versions of
    Git, tar, Python and ``chrpath``. And in the case of the
    ``buildtools-extended`` tarball, additional working versions of tools
    including ``gcc``, ``make`` and the other tools included in
    ``packagegroup-core-buildessential``.

 Building Your Own ``buildtools`` Tarball
 ----------------------------------------

 Building and running your own buildtools installer applies only when you
 have a build host that can already run BitBake. In this case, you use
 that machine to build the ``.sh`` file and then take steps to transfer
 and run it on a machine that does not meet the minimal Git, tar, and
 Python (or gcc) requirements.

 Here are the steps to take to build and run your own buildtools
 installer:

 1. On the machine that is able to run BitBake, be sure you have set up
    your build environment with the setup script
    (:ref:`structure-core-script`).

 2. Run the BitBake command to build the tarball:
    ::

       $ bitbake buildtools-tarball

    or run the BitBake command to build the extended tarball:
    ::

       $ bitbake buildtools-extended-tarball

    .. note::

       The :term:`SDKMACHINE` variable in your ``local.conf`` file determines
       whether you build tools for a 32-bit or 64-bit system.

    Once the build completes, you can find the ``.sh`` file that installs
    the tools in the ``tmp/deploy/sdk`` subdirectory of the
    :term:`Build Directory`. The installer file has the string
    "buildtools" (or "buildtools-extended") in the name.

 3. Transfer the ``.sh`` file from the build host to the machine that
    does not meet the Git, tar, or Python (or gcc) requirements.

 4. On the machine that does not meet the requirements, run the ``.sh``
    file to install the tools. Here is an example for the traditional
    installer:
    ::

       $ sh ~/Downloads/x86_64-buildtools-nativesdk-standalone-&DISTRO;.sh

    Here is an example for the extended installer:
    ::

       $ sh ~/Downloads/x86_64-buildtools-extended-nativesdk-standalone-&DISTRO;.sh

    During execution, a prompt appears that allows you to choose the
    installation directory. For example, you could choose the following:
    ``/home/your_username/buildtools``

 5. Source the tools environment setup script by using a command like the
    following:
    ::

       $ source /home/your_username/buildtools/environment-setup-x86_64-poky-linux

    Of course, you need to supply your installation directory and be sure to
    use the right file (i.e. i586 or x86_64).

    After you have sourced the setup script, the tools are added to
    ``PATH`` and any other environment variables required to run the
    tools are initialized. The results are working versions versions of
    Git, tar, Python and ``chrpath``. And in the case of the
    ``buildtools-extended`` tarball, additional working versions of tools
    including ``gcc``, ``make`` and the other tools included in
    ``packagegroup-core-buildessential``.
	.. SPDX-License-Identifier: CC-BY-SA-2.0-UK

	*******************
	System Requirements
	*******************

	Welcome to the Yocto Project Reference Manual! This manual provides
	reference information for the current release of the Yocto Project, and
	is most effectively used after you have an understanding of the basics
	of the Yocto Project. The manual is neither meant to be read as a
	starting point to the Yocto Project, nor read from start to finish.
	Rather, use this manual to find variable definitions, class
	descriptions, and so forth as needed during the course of using the
	Yocto Project.

	For introductory information on the Yocto Project, see the
	:yocto_home:`Yocto Project Website <>` and the
	":ref:`overview-manual/development-environment:the yocto project development environment`"
	chapter in the Yocto Project Overview and Concepts Manual.

	If you want to use the Yocto Project to quickly build an image without
	having to understand concepts, work through the
	:doc:`/brief-yoctoprojectqs/index` document. You can find "how-to"
	information in the :doc:`/dev-manual/index`. You can find Yocto Project overview
	and conceptual information in the :doc:`/overview-manual/index`.

	.. note::

	For more information about the Yocto Project Documentation set, see
	the :ref:`ref-manual/resources:links and related documentation` section.

	.. _detailed-supported-distros:

	Supported Linux Distributions
	=============================

	Currently, the Yocto Project is supported on the following
	distributions:

	- Ubuntu 16.04 (LTS)

	- Ubuntu 18.04 (LTS)

	- Ubuntu 20.04

	- Fedora 30

	- Fedora 31

	- Fedora 32

	- CentOS 7.x

	- CentOS 8.x

	- Debian GNU/Linux 8.x (Jessie)

	- Debian GNU/Linux 9.x (Stretch)

	- Debian GNU/Linux 10.x (Buster)

	- openSUSE Leap 15.1


	.. note::

	- While the Yocto Project Team attempts to ensure all Yocto Project
	releases are one hundred percent compatible with each officially
	supported Linux distribution, instances might exist where you
	encounter a problem while using the Yocto Project on a specific
	distribution.

	- Yocto Project releases are tested against the stable Linux
	distributions in the above list. The Yocto Project should work
	on other distributions but validation is not performed against
	them.

	- In particular, the Yocto Project does not support and currently
	has no plans to support rolling-releases or development
	distributions due to their constantly changing nature. We welcome
	patches and bug reports, but keep in mind that our priority is on
	the supported platforms listed below.

	- You may use Windows Subsystem For Linux v2 to set up a build host
	using Windows 10, but validation is not performed against build
	hosts using WSLv2.

	- The Yocto Project is not compatible with WSLv1, it is
	compatible but not officially supported nor validated with
	WSLv2, if you still decide to use WSL please upgrade to WSLv2.

	- If you encounter problems, please go to :yocto_bugs:`Yocto Project
	Bugzilla <>` and submit a bug. We are
	interested in hearing about your experience. For information on
	how to submit a bug, see the Yocto Project
	:yocto_wiki:`Bugzilla wiki page </Bugzilla_Configuration_and_Bug_Tracking>`
	and the ":ref:`dev-manual/common-tasks:submitting a defect against the yocto project`"
	section in the Yocto Project Development Tasks Manual.


	Required Packages for the Build Host
	====================================

	The list of packages you need on the host development system can be
	large when covering all build scenarios using the Yocto Project. This
	section describes required packages according to Linux distribution and
	function.

	.. _ubuntu-packages:

	Ubuntu and Debian
	-----------------

	The following list shows the required packages by function given a
	supported Ubuntu or Debian Linux distribution:

	.. note::

	- If your build system has the ``oss4-dev`` package installed, you
	might experience QEMU build failures due to the package installing
	its own custom ``/usr/include/linux/soundcard.h`` on the Debian
	system. If you run into this situation, either of the following
	solutions exist:
	::

	$ sudo apt-get build-dep qemu
	$ sudo apt-get remove oss4-dev

	- For Debian-8, ``python3-git`` and ``pylint3`` are no longer
	available via ``apt-get``.
	::

	$ sudo pip3 install GitPython pylint==1.9.5

	- Essentials: Packages needed to build an image on a headless system:
	::

	$ sudo apt-get install &UBUNTU_HOST_PACKAGES_ESSENTIAL;

	- Documentation: Packages needed if you are going to build out the
	Yocto Project documentation manuals:
	::

	$ sudo apt-get install make python3-pip
	&PIP3_HOST_PACKAGES_DOC;

	.. note::

	It is currently not possible to build out documentation from Debian 8
	(Jessie) because of outdated ``pip3`` and ``python3``. ``python3-sphinx``
	is too outdated.

	Fedora Packages
	---------------

	The following list shows the required packages by function given a
	supported Fedora Linux distribution:

	- Essentials: Packages needed to build an image for a headless
	system:
	::

	$ sudo dnf install &FEDORA_HOST_PACKAGES_ESSENTIAL;

	- Documentation: Packages needed if you are going to build out the
	Yocto Project documentation manuals:
	::

	$ sudo dnf install make python3-pip which
	&PIP3_HOST_PACKAGES_DOC;

	openSUSE Packages
	-----------------

	The following list shows the required packages by function given a
	supported openSUSE Linux distribution:

	- Essentials: Packages needed to build an image for a headless
	system:
	::

	$ sudo zypper install &OPENSUSE_HOST_PACKAGES_ESSENTIAL;

	- Documentation: Packages needed if you are going to build out the
	Yocto Project documentation manuals:
	::

	$ sudo zypper install make python3-pip which
	&PIP3_HOST_PACKAGES_DOC;


	CentOS-7 Packages
	-----------------

	The following list shows the required packages by function given a
	supported CentOS-7 Linux distribution:

	- Essentials: Packages needed to build an image for a headless
	system:
	::

	$ sudo yum install &CENTOS7_HOST_PACKAGES_ESSENTIAL;

	.. note::

	- Extra Packages for Enterprise Linux (i.e. ``epel-release``) is
	a collection of packages from Fedora built on RHEL/CentOS for
	easy installation of packages not included in enterprise Linux
	by default. You need to install these packages separately.

	- The ``makecache`` command consumes additional Metadata from
	``epel-release``.

	- Documentation: Packages needed if you are going to build out the
	Yocto Project documentation manuals:
	::

	$ sudo yum install make python3-pip which
	&PIP3_HOST_PACKAGES_DOC;

	CentOS-8 Packages
	-----------------

	The following list shows the required packages by function given a
	supported CentOS-8 Linux distribution:

	- Essentials: Packages needed to build an image for a headless
	system:
	::

	$ sudo dnf install &CENTOS8_HOST_PACKAGES_ESSENTIAL;

	.. note::

	- Extra Packages for Enterprise Linux (i.e. ``epel-release``) is
	a collection of packages from Fedora built on RHEL/CentOS for
	easy installation of packages not included in enterprise Linux
	by default. You need to install these packages separately.

	- The ``PowerTools`` repo provides additional packages such as
	``rpcgen`` and ``texinfo``.

	- The ``makecache`` command consumes additional Metadata from
	``epel-release``.

	- Documentation: Packages needed if you are going to build out the
	Yocto Project documentation manuals:
	::

	$ sudo dnf install make python3-pip which
	&PIP3_HOST_PACKAGES_DOC;

	Required Git, tar, Python and gcc Versions
	==========================================

	In order to use the build system, your host development system must meet
	the following version requirements for Git, tar, and Python:

	- Git &MIN_GIT_VERSION; or greater

	- tar &MIN_TAR_VERSION; or greater

	- Python &MIN_PYTHON_VERSION; or greater

	If your host development system does not meet all these requirements,
	you can resolve this by installing a ``buildtools`` tarball that
	contains these tools. You can get the tarball one of two ways: download
	a pre-built tarball or use BitBake to build the tarball.

	In addition, your host development system must meet the following
	version requirement for gcc:

	- gcc &MIN_GCC_VERSION; or greater

	If your host development system does not meet this requirement, you can
	resolve this by installing a ``buildtools-extended`` tarball that
	contains additional tools, the equivalent of the Debian/Ubuntu ``build-essential``
	package.

	In the sections that follow, three different methods will be described for
	installing the ``buildtools`` or ``buildtools-extended`` toolset.

	Installing a Pre-Built ``buildtools`` Tarball with ``install-buildtools`` script
	--------------------------------------------------------------------------------

	The ``install-buildtools`` script is the easiest of the three methods by
	which you can get these tools. It downloads a pre-built buildtools
	installer and automatically installs the tools for you:

	1. Execute the ``install-buildtools`` script. Here is an example:
	::

	$ cd poky
	$ scripts/install-buildtools --without-extended-buildtools \
	--base-url &YOCTO_DL_URL;/releases/yocto \
	--release yocto-&DISTRO; \
	--installer-version &DISTRO;

	During execution, the buildtools tarball will be downloaded, the
	checksum of the download will be verified, the installer will be run
	for you, and some basic checks will be run to make sure the
	installation is functional.

	To avoid the need of ``sudo`` privileges, the ``install-buildtools``
	script will by default tell the installer to install in:
	::

	/path/to/poky/buildtools

	If your host development system needs the additional tools provided
	in the ``buildtools-extended`` tarball, you can instead execute the
	``install-buildtools`` script with the default parameters:
	::

	$ cd poky
	$ scripts/install-buildtools

	2. Source the tools environment setup script by using a command like the
	following:
	::

	$ source /path/to/poky/buildtools/environment-setup-x86_64-pokysdk-linux

	Of course, you need to supply your installation directory and be sure to
	use the right file (i.e. i586 or x86_64).

	After you have sourced the setup script, the tools are added to
	``PATH`` and any other environment variables required to run the
	tools are initialized. The results are working versions versions of
	Git, tar, Python and ``chrpath``. And in the case of the
	``buildtools-extended`` tarball, additional working versions of tools
	including ``gcc``, ``make`` and the other tools included in
	``packagegroup-core-buildessential``.

	Downloading a Pre-Built ``buildtools`` Tarball
	----------------------------------------------

	If you would prefer not to use the ``install-buildtools`` script, you can instead
	download and run a pre-built buildtools installer yourself with the following
	steps:

	1. Locate and download the ``*.sh`` at &YOCTO_RELEASE_DL_URL;/buildtools/

	2. Execute the installation script. Here is an example for the
	traditional installer:
	::

	$ sh ~/Downloads/x86_64-buildtools-nativesdk-standalone-&DISTRO;.sh

	Here is an example for the extended installer:
	::

	$ sh ~/Downloads/x86_64-buildtools-extended-nativesdk-standalone-&DISTRO;.sh

	During execution, a prompt appears that allows you to choose the
	installation directory. For example, you could choose the following:
	``/home/your-username/buildtools``

	3. Source the tools environment setup script by using a command like the
	following:
	::

	$ source /home/your_username/buildtools/environment-setup-i586-poky-linux

	Of
	course, you need to supply your installation directory and be sure to
	use the right file (i.e. i585 or x86-64).

	After you have sourced the setup script, the tools are added to
	``PATH`` and any other environment variables required to run the
	tools are initialized. The results are working versions versions of
	Git, tar, Python and ``chrpath``. And in the case of the
	``buildtools-extended`` tarball, additional working versions of tools
	including ``gcc``, ``make`` and the other tools included in
	``packagegroup-core-buildessential``.

	Building Your Own ``buildtools`` Tarball
	----------------------------------------

	Building and running your own buildtools installer applies only when you
	have a build host that can already run BitBake. In this case, you use
	that machine to build the ``.sh`` file and then take steps to transfer
	and run it on a machine that does not meet the minimal Git, tar, and
	Python (or gcc) requirements.

	Here are the steps to take to build and run your own buildtools
	installer:

	1. On the machine that is able to run BitBake, be sure you have set up
	your build environment with the setup script
	(:ref:`structure-core-script`).

	2. Run the BitBake command to build the tarball:
	::

	$ bitbake buildtools-tarball

	or run the BitBake command to build the extended tarball:
	::

	$ bitbake buildtools-extended-tarball

	.. note::

	The :term:`SDKMACHINE` variable in your ``local.conf`` file determines
	whether you build tools for a 32-bit or 64-bit system.

	Once the build completes, you can find the ``.sh`` file that installs
	the tools in the ``tmp/deploy/sdk`` subdirectory of the
	:term:`Build Directory`. The installer file has the string
	"buildtools" (or "buildtools-extended") in the name.

	3. Transfer the ``.sh`` file from the build host to the machine that
	does not meet the Git, tar, or Python (or gcc) requirements.

	4. On the machine that does not meet the requirements, run the ``.sh``
	file to install the tools. Here is an example for the traditional
	installer:
	::

	$ sh ~/Downloads/x86_64-buildtools-nativesdk-standalone-&DISTRO;.sh

	Here is an example for the extended installer:
	::

	$ sh ~/Downloads/x86_64-buildtools-extended-nativesdk-standalone-&DISTRO;.sh

	During execution, a prompt appears that allows you to choose the
	installation directory. For example, you could choose the following:
	``/home/your_username/buildtools``

	5. Source the tools environment setup script by using a command like the
	following:
	::

	$ source /home/your_username/buildtools/environment-setup-x86_64-poky-linux

	Of course, you need to supply your installation directory and be sure to
	use the right file (i.e. i586 or x86_64).

	After you have sourced the setup script, the tools are added to
	``PATH`` and any other environment variables required to run the
	tools are initialized. The results are working versions versions of
	Git, tar, Python and ``chrpath``. And in the case of the
	``buildtools-extended`` tarball, additional working versions of tools
	including ``gcc``, ``make`` and the other tools included in
	``packagegroup-core-buildessential``.