| <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
| "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" |
| [<!ENTITY % poky SYSTEM "../poky.ent"> %poky; ] > |
| |
| <chapter id='ref-manual-intro'> |
| <title>Introduction</title> |
| |
| <section id='intro-welcome'> |
| <title>Introduction</title> |
| |
| <para> |
| This manual provides reference information for the current release |
| of the Yocto Project. |
| The Yocto Project is an open-source collaboration project focused |
| on embedded Linux developers. |
| Amongst other things, the Yocto Project uses the OpenEmbedded build |
| system, which is based on the Poky project, to construct complete |
| Linux images. |
| You can find complete introductory and getting started information |
| on the Yocto Project by reading the |
| <ulink url='&YOCTO_DOCS_QS_URL;'>Yocto Project Quick Start</ulink>. |
| </para> |
| |
| <para> |
| For task-based information using the Yocto Project, see the |
| <ulink url='&YOCTO_DOCS_DEV_URL;'>Yocto Project Development Manual</ulink> |
| and the <ulink url='&YOCTO_DOCS_KERNEL_DEV_URL;'>Yocto Project Linux Kernel Development Manual</ulink>. |
| For Board Support Package (BSP) structure information, see the |
| <ulink url='&YOCTO_DOCS_BSP_URL;'>Yocto Project Board Support Package (BSP) Developer's Guide</ulink>. |
| For information on how to use a Software Development Kit, (SDK), see the |
| <ulink url='&YOCTO_DOCS_SDK_URL;'>Yocto Project Software Development Kit (SDK) Developer's Guide</ulink>. |
| You can find information on tracing and profiling in the |
| <ulink url='&YOCTO_DOCS_PROF_URL;'>Yocto Project Profiling and Tracing Manual</ulink>. |
| For information on BitBake, which is the task execution tool the |
| OpenEmbedded build system is based on, see the |
| <ulink url='&YOCTO_DOCS_BB_URL;#bitbake-user-manual'>BitBake User Manual</ulink>. |
| Finally, you can also find lots of Yocto Project information on the |
| <ulink url="&YOCTO_HOME_URL;">Yocto Project website</ulink>. |
| </para> |
| </section> |
| |
| <section id='intro-manualoverview'> |
| <title>Documentation Overview</title> |
| <para> |
| This reference manual consists of the following: |
| <itemizedlist> |
| <listitem><para><emphasis> |
| <link linkend='usingpoky'>Using the Yocto Project</link>:</emphasis> |
| Provides an overview of the components that make up the Yocto Project |
| followed by information about debugging images created in the Yocto Project. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='closer-look'>A Closer Look at the Yocto Project Development Environment</link>:</emphasis> |
| Provides a more detailed look at the Yocto Project development |
| environment within the context of development. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='technical-details'>Technical Details</link>:</emphasis> |
| Describes fundamental Yocto Project components as well as an explanation |
| behind how the Yocto Project uses shared state (sstate) cache to speed build time. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='migration'>Migrating to a Newer Yocto Project Release</link>:</emphasis> |
| Describes release-specific information that helps you move from |
| one Yocto Project Release to another. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-structure'>Directory Structure</link>:</emphasis> |
| Describes the |
| <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink> created |
| either by unpacking a released Yocto Project tarball on your host development system, |
| or by cloning the upstream |
| <ulink url='&YOCTO_DOCS_DEV_URL;#poky'>Poky</ulink> Git repository. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-classes'>Classes</link>:</emphasis> |
| Describes the classes used in the Yocto Project.</para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-tasks'>Tasks</link>:</emphasis> |
| Describes the tasks defined by the OpenEmbedded build system. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-devtool-reference'><filename>devtool</filename> Quick Reference</link>:</emphasis> |
| Provides a quick reference for the <filename>devtool</filename> |
| command. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-qa-checks'>QA Error and Warning Messages</link>:</emphasis> |
| Lists and describes QA warning and error messages. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-images'>Images</link>:</emphasis> |
| Describes the standard images that the Yocto Project supports. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-features'>Features</link>:</emphasis> |
| Describes mechanisms for creating distribution, machine, and image |
| features during the build process using the OpenEmbedded build system.</para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-variables-glos'>Variables Glossary</link>:</emphasis> |
| Presents most variables used by the OpenEmbedded build system, which |
| uses BitBake. |
| Entries describe the function of the variable and how to apply them. |
| </para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='ref-varlocality'>Variable Context</link>:</emphasis> |
| Provides variable locality or context.</para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='faq'>FAQ</link>:</emphasis> |
| Provides answers for commonly asked questions in the Yocto Project |
| development environment.</para></listitem> |
| <listitem><para><emphasis> |
| <link linkend='resources'>Contributing to the Yocto Project</link>:</emphasis> |
| Provides guidance on how you can contribute back to the Yocto |
| Project.</para></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| |
| |
| <section id='intro-requirements'> |
| <title>System Requirements</title> |
| <para> |
| For general Yocto Project system requirements, see the |
| "<ulink url='&YOCTO_DOCS_QS_URL;#yp-resources'>Setting Up to Use the Yocto Project</ulink>" section |
| in the Yocto Project Quick Start. |
| The remainder of this section provides details on system requirements |
| not covered in the Yocto Project Quick Start. |
| </para> |
| |
| <section id='detailed-supported-distros'> |
| <title>Supported Linux Distributions</title> |
| |
| <para> |
| Currently, the Yocto Project is supported on the following |
| distributions: |
| <note> |
| <para> |
| Yocto Project releases are tested against the stable Linux |
| distributions in the following list. |
| The Yocto Project should work on other distributions but |
| validation is not performed against them. |
| </para> |
| |
| <para> |
| 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. |
| </para> |
| |
| <para> |
| If you encounter problems, please go to |
| <ulink url='&YOCTO_BUGZILLA_URL;'>Yocto Project Bugzilla</ulink> |
| and submit a bug. |
| We are interested in hearing about your experience. |
| </para> |
| </note> |
| <itemizedlist> |
| <!-- |
| <listitem><para>Ubuntu 10.04</para></listitem> |
| <listitem><para>Ubuntu 11.10</para></listitem> |
| <listitem><para>Ubuntu 12.04 (LTS)</para></listitem> |
| <listitem><para>Ubuntu 13.10</para></listitem> --> |
| <listitem><para>Ubuntu 14.04 (LTS)</para></listitem> |
| <listitem><para>Ubuntu 14.10</para></listitem> |
| <listitem><para>Ubuntu 15.04</para></listitem> |
| <listitem><para>Ubuntu 15.10</para></listitem> |
| <!-- <listitem><para>Fedora 16 (Verne)</para></listitem> |
| <listitem><para>Fedora 17 (Spherical)</para></listitem> |
| <listitem><para>Fedora release 19 (Schrödinger's Cat)</para></listitem> |
| <listitem><para>Fedora release 20 (Heisenbug)</para></listitem> --> |
| <listitem><para>Fedora release 21</para></listitem> |
| <listitem><para>Fedora release 22</para></listitem> |
| <!-- <listitem><para>CentOS release 5.6 (Final)</para></listitem> |
| <listitem><para>CentOS release 5.7 (Final)</para></listitem> |
| <listitem><para>CentOS release 5.8 (Final)</para></listitem> |
| <listitem><para>CentOS release 6.3 (Final)</para></listitem> --> |
| <listitem><para>CentOS release 6.x</para></listitem> |
| <listitem><para>CentOS release 7.x</para></listitem> |
| <!-- <listitem><para>Debian GNU/Linux 6.0 (Squeeze)</para></listitem> --> |
| <listitem><para>Debian GNU/Linux 7.x (Wheezy)</para></listitem> |
| <listitem><para>Debian GNU/Linux 8.x (Jessie)</para></listitem> |
| <!-- <listitem><para>Debian GNU/Linux 7.1 (Wheezy)</para></listitem> |
| <listitem><para>Debian GNU/Linux 7.2 (Wheezy)</para></listitem> |
| <listitem><para>Debian GNU/Linux 7.3 (Wheezy)</para></listitem> |
| <listitem><para>Debian GNU/Linux 7.4 (Wheezy)</para></listitem> |
| <listitem><para>Debian GNU/Linux 7.5 (Wheezy)</para></listitem> |
| <listitem><para>Debian GNU/Linux 7.6 (Wheezy)</para></listitem> --> |
| <!-- <listitem><para>openSUSE 11.4</para></listitem> |
| <listitem><para>openSUSE 12.1</para></listitem> |
| <listitem><para>openSUSE 12.2</para></listitem> |
| <listitem><para>openSUSE 12.3</para></listitem> |
| <listitem><para>openSUSE 13.1</para></listitem> --> |
| <listitem><para>openSUSE 13.2</para></listitem> |
| </itemizedlist> |
| </para> |
| |
| <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. |
| </note> |
| </section> |
| |
| <section id='required-packages-for-the-host-development-system'> |
| <title>Required Packages for the Host Development System</title> |
| |
| <para> |
| 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 provides required packages according to |
| Linux distribution and function. |
| </para> |
| |
| <section id='ubuntu-packages'> |
| <title>Ubuntu and Debian</title> |
| |
| <para> |
| The following list shows the required packages by function |
| given a supported Ubuntu or Debian Linux distribution: |
| <note> |
| If your build system has the |
| <filename>oss4-dev</filename> package installed, you |
| might experience QEMU build failures due to the package |
| installing its own custom |
| <filename>/usr/include/linux/soundcard.h</filename> on |
| the Debian system. |
| If you run into this situation, either of the following |
| solutions exist: |
| <literallayout class='monospaced'> |
| $ sudo apt-get build-dep qemu |
| $ sudo apt-get remove oss4-dev |
| </literallayout> |
| </note> |
| <itemizedlist> |
| <listitem><para><emphasis>Essentials:</emphasis> |
| Packages needed to build an image on a headless |
| system: |
| <literallayout class='monospaced'> |
| $ sudo apt-get install &UBUNTU_HOST_PACKAGES_ESSENTIAL; |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis> |
| Packages recommended if the host system has graphics |
| support or if you are going to use the Eclipse |
| IDE: |
| <literallayout class='monospaced'> |
| $ sudo apt-get install libsdl1.2-dev xterm |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Documentation:</emphasis> |
| Packages needed if you are going to build out the |
| Yocto Project documentation manuals: |
| <literallayout class='monospaced'> |
| $ sudo apt-get install make xsltproc docbook-utils fop dblatex xmlto |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>OpenEmbedded Self-Test (<filename>oe-selftest</filename>):</emphasis> |
| Packages needed if you are going to run |
| <filename>oe-selftest</filename>: |
| <literallayout class='monospaced'> |
| $ sudo apt-get install python-git |
| </literallayout> |
| </para></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| |
| <section id='fedora-packages'> |
| <title>Fedora Packages</title> |
| |
| <para> |
| The following list shows the required packages by function |
| given a supported Fedora Linux distribution: |
| <itemizedlist> |
| <listitem><para><emphasis>Essentials:</emphasis> |
| Packages needed to build an image for a headless |
| system: |
| <literallayout class='monospaced'> |
| $ sudo dnf install &FEDORA_HOST_PACKAGES_ESSENTIAL; |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis> |
| Packages recommended if the host system has graphics |
| support or if you are going to use the Eclipse |
| IDE: |
| <literallayout class='monospaced'> |
| $ sudo dnf install SDL-devel xterm |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Documentation:</emphasis> |
| Packages needed if you are going to build out the |
| Yocto Project documentation manuals: |
| <literallayout class='monospaced'> |
| $ sudo dnf install make docbook-style-dsssl docbook-style-xsl \ |
| docbook-dtds docbook-utils fop libxslt dblatex xmlto xsltproc |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>OpenEmbedded Self-Test (<filename>oe-selftest</filename>):</emphasis> |
| Packages needed if you are going to run |
| <filename>oe-selftest</filename>: |
| <literallayout class='monospaced'> |
| $ sudo dnf install python3-GitPython |
| </literallayout> |
| </para></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| |
| <section id='opensuse-packages'> |
| <title>openSUSE Packages</title> |
| |
| <para> |
| The following list shows the required packages by function |
| given a supported openSUSE Linux distribution: |
| <itemizedlist> |
| <listitem><para><emphasis>Essentials:</emphasis> |
| Packages needed to build an image for a headless |
| system: |
| <literallayout class='monospaced'> |
| $ sudo zypper install &OPENSUSE_HOST_PACKAGES_ESSENTIAL; |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis> |
| Packages recommended if the host system has graphics |
| support or if you are going to use the Eclipse |
| IDE: |
| <literallayout class='monospaced'> |
| $ sudo zypper install libSDL-devel xterm |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Documentation:</emphasis> |
| Packages needed if you are going to build out the |
| Yocto Project documentation manuals: |
| <literallayout class='monospaced'> |
| $ sudo zypper install make fop xsltproc dblatex xmlto |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>OpenEmbedded Self-Test (<filename>oe-selftest</filename>):</emphasis> |
| Packages needed if you are going to run |
| <filename>oe-selftest</filename>: |
| <literallayout class='monospaced'> |
| $ sudo zypper install python-GitPython |
| </literallayout></para></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| |
| <section id='centos-packages'> |
| <title>CentOS Packages</title> |
| |
| <para> |
| The following list shows the required packages by function |
| given a supported CentOS Linux distribution: |
| <note> |
| For CentOS 6.x, some of the versions of the components |
| provided by the distribution are too old (e.g. Git, Python, |
| and tar). |
| It is recommended that you install the buildtools in order |
| to provide versions that will work with the OpenEmbedded |
| build system. |
| For information on how to install the buildtools tarball, |
| see the |
| "<link linkend='required-git-tar-and-python-versions'>Required Git, Tar, and Python Versions</link>" |
| section. |
| </note> |
| <itemizedlist> |
| <listitem><para><emphasis>Essentials:</emphasis> |
| Packages needed to build an image for a headless |
| system: |
| <literallayout class='monospaced'> |
| $ sudo yum install &CENTOS_HOST_PACKAGES_ESSENTIAL; |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis> |
| Packages recommended if the host system has graphics |
| support or if you are going to use the Eclipse |
| IDE: |
| <literallayout class='monospaced'> |
| $ sudo yum install SDL-devel xterm |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>Documentation:</emphasis> |
| Packages needed if you are going to build out the |
| Yocto Project documentation manuals: |
| <literallayout class='monospaced'> |
| $ sudo yum install make docbook-style-dsssl docbook-style-xsl \ |
| docbook-dtds docbook-utils fop libxslt dblatex xmlto xsltproc |
| </literallayout></para></listitem> |
| <listitem><para><emphasis>OpenEmbedded Self-Test (<filename>oe-selftest</filename>):</emphasis> |
| Packages needed if you are going to run |
| <filename>oe-selftest</filename>: |
| <literallayout class='monospaced'> |
| $ sudo yum install GitPython |
| </literallayout> |
| </para></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| </section> |
| |
| <section id='required-git-tar-and-python-versions'> |
| <title>Required Git, tar, and Python Versions</title> |
| |
| <para> |
| In order to use the build system, your host development system |
| must meet the following version requirements for Git, tar, and |
| Python: |
| <itemizedlist> |
| <listitem><para>Git 1.8.3.1 or greater</para></listitem> |
| <listitem><para>tar 1.24 or greater</para></listitem> |
| <listitem><para>Python 3.4.0 or greater</para></listitem> |
| </itemizedlist> |
| </para> |
| |
| <para> |
| If your host development system does not meet all these requirements, |
| you can resolve this by installing a <filename>buildtools</filename> |
| 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. |
| </para> |
| |
| <section id='downloading-a-pre-built-buildtools-tarball'> |
| <title>Downloading a Pre-Built <filename>buildtools</filename> Tarball</title> |
| |
| <para> |
| Downloading and running a pre-built buildtools installer is |
| the easiest of the two methods by which you can get these tools: |
| <orderedlist> |
| <listitem><para> |
| Locate and download the <filename>*.sh</filename> at |
| <ulink url='&YOCTO_DL_URL;/releases/yocto/yocto-&DISTRO;/buildtools/'></ulink>. |
| </para></listitem> |
| <listitem><para> |
| Execute the installation script. |
| Here is an example: |
| <literallayout class='monospaced'> |
| $ sh poky-glibc-x86_64-buildtools-tarball-x86_64-buildtools-nativesdk-standalone-&DISTRO;.sh |
| </literallayout> |
| During execution, a prompt appears that allows you to |
| choose the installation directory. |
| For example, you could choose the following: |
| <literallayout class='monospaced'> |
| /home/<replaceable>your-username</replaceable>/buildtools |
| </literallayout> |
| </para></listitem> |
| <listitem><para> |
| Source the tools environment setup script by using a |
| command like the following: |
| <literallayout class='monospaced'> |
| $ source /home/<replaceable>your_username</replaceable>/buildtools/environment-setup-i586-poky-linux |
| </literallayout> |
| Of course, you need to supply your installation directory and be |
| sure to use the right file (i.e. i585 or x86-64). |
| </para> |
| <para> |
| After you have sourced the setup script, |
| the tools are added to <filename>PATH</filename> |
| and any other environment variables required to run the |
| tools are initialized. |
| The results are working versions versions of Git, tar, |
| Python and <filename>chrpath</filename>. |
| </para></listitem> |
| </orderedlist> |
| </para> |
| </section> |
| |
| <section id='building-your-own-buildtools-tarball'> |
| <title>Building Your Own <filename>buildtools</filename> Tarball</title> |
| |
| <para> |
| 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 |
| <filename>.sh</filename> file and then |
| take steps to transfer and run it on a |
| machine that does not meet the minimal Git, tar, and Python |
| requirements. |
| </para> |
| |
| <para> |
| Here are the steps to take to build and run your own |
| buildtools installer: |
| <orderedlist> |
| <listitem><para> |
| On the machine that is able to run BitBake, |
| be sure you have set up your build environment with |
| the setup script |
| (<link linkend='structure-core-script'><filename>&OE_INIT_FILE;</filename></link> |
| or |
| <link linkend='structure-memres-core-script'><filename>oe-init-build-env-memres</filename></link>). |
| </para></listitem> |
| <listitem><para> |
| Run the BitBake command to build the tarball: |
| <literallayout class='monospaced'> |
| $ bitbake buildtools-tarball |
| </literallayout> |
| <note> |
| The |
| <link linkend='var-SDKMACHINE'><filename>SDKMACHINE</filename></link> |
| variable in your <filename>local.conf</filename> file |
| determines whether you build tools for a 32-bit |
| or 64-bit system. |
| </note> |
| Once the build completes, you can find the |
| <filename>.sh</filename> file that installs |
| the tools in the <filename>tmp/deploy/sdk</filename> |
| subdirectory of the |
| <ulink url='&YOCTO_DOCS_DEV_URL;#build-directory'>Build Directory</ulink>. |
| The installer file has the string "buildtools" |
| in the name. |
| </para></listitem> |
| <listitem><para> |
| Transfer the <filename>.sh</filename> file from the |
| build host to the machine that does not meet the |
| Git, tar, or Python requirements. |
| </para></listitem> |
| <listitem><para> |
| On the machine that does not meet the requirements, |
| run the <filename>.sh</filename> file |
| to install the tools. |
| Here is an example: |
| <literallayout class='monospaced'> |
| $ sh poky-glibc-x86_64-buildtools-tarball-x86_64-buildtools-nativesdk-standalone-&DISTRO;.sh |
| </literallayout> |
| During execution, a prompt appears that allows you to |
| choose the installation directory. |
| For example, you could choose the following: |
| <literallayout class='monospaced'> |
| /home/<replaceable>your_username</replaceable>/buildtools |
| </literallayout> |
| </para></listitem> |
| <listitem><para> |
| Source the tools environment setup script by using a |
| command like the following: |
| <literallayout class='monospaced'> |
| $ source /home/<replaceable>your_username</replaceable>/buildtools/environment-setup-i586-poky-linux |
| </literallayout> |
| Of course, you need to supply your installation directory and be |
| sure to use the right file (i.e. i585 or x86-64). |
| </para> |
| <para> |
| After you have sourced the setup script, |
| the tools are added to <filename>PATH</filename> |
| and any other environment variables required to run the |
| tools are initialized. |
| The results are working versions versions of Git, tar, |
| Python and <filename>chrpath</filename>. |
| </para></listitem> |
| </orderedlist> |
| </para> |
| </section> |
| </section> |
| </section> |
| |
| <section id='intro-getit'> |
| <title>Obtaining the Yocto Project</title> |
| <para> |
| The Yocto Project development team makes the Yocto Project available through a number |
| of methods: |
| <itemizedlist> |
| <listitem><para><emphasis>Source Repositories:</emphasis> |
| Working from a copy of the upstream |
| <filename>poky</filename> repository is the |
| preferred method for obtaining and using a Yocto Project |
| release. |
| You can view the Yocto Project Source Repositories at |
| <ulink url='&YOCTO_GIT_URL;/cgit.cgi'></ulink>. |
| In particular, you can find the |
| <filename>poky</filename> repository at |
| <ulink url='http://git.yoctoproject.org/cgit/cgit.cgi/poky/'></ulink>. |
| </para></listitem> |
| <listitem><para><emphasis>Releases:</emphasis> Stable, tested |
| releases are available as tarballs through |
| <ulink url='&YOCTO_DL_URL;/releases/yocto/'/>.</para></listitem> |
| <listitem><para><emphasis>Nightly Builds:</emphasis> These |
| tarball releases are available at |
| <ulink url='&YOCTO_AB_NIGHTLY_URL;'/>. |
| These builds include Yocto Project releases, SDK installation |
| scripts, and experimental builds. |
| </para></listitem> |
| <listitem><para><emphasis>Yocto Project Website:</emphasis> You can |
| find tarball releases of the Yocto Project and supported BSPs |
| at the |
| <ulink url='&YOCTO_HOME_URL;'>Yocto Project website</ulink>. |
| Along with these downloads, you can find lots of other |
| information at this site. |
| </para></listitem> |
| </itemizedlist> |
| </para> |
| </section> |
| |
| <section id='intro-getit-dev'> |
| <title>Development Checkouts</title> |
| <para> |
| Development using the Yocto Project requires a local |
| <ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>. |
| You can set up the Source Directory by cloning a copy of the upstream |
| <ulink url='&YOCTO_DOCS_DEV_URL;#poky'>poky</ulink> Git repository. |
| For information on how to do this, see the |
| "<ulink url='&YOCTO_DOCS_DEV_URL;#getting-setup'>Getting Set Up</ulink>" |
| section in the Yocto Project Development Manual. |
| </para> |
| </section> |
| |
| </chapter> |
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