documentation/yocto-project-qs/yocto-project-qs.xml: Robert P. J. Day Review
As Reported By: Robert P. J. Day. Community member Robert P. J. Day scrubbed the Quick Start manual for Release 1.1. He found several areas that were incorrect. Many items were documented pre-release and changed during the actual realeas. Naming conventions for images and such had to be changed. Robert also found and suggested several wording changes that resulted in clearer text. I was not able to patch all the changes using the 'patch' command. I need to work out some process issues still in order to apply patches directly to the yocto-docs repository. Meanwhile, I hand-inserted the changes. Also, some text changes were modified slightly by me to conform to the books style, etc. Kudos to Robert for such a detailed look at the YP Quick Start. (From yocto-docs rev: 6bc2e9c289a802f511441ca5b31ca6163e4fdfac) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -149,7 +149,7 @@
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The Yocto Project team is continually verifying more and more Linux
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distributions with each release.
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In general, if you have the current release minus one of the following
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distributions you should no problems.
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distributions you should have no problems.
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<itemizedlist>
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<listitem><para>Ubuntu</para></listitem>
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<listitem><para>Fedora</para></listitem>
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@ -278,7 +278,7 @@
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<para>Build an image and run it in the QEMU emulator</para>
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</listitem>
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<listitem>
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<para>Or, use a pre-built image and run it in the QEMU emulator</para>
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<para>Use a pre-built image and run it in the QEMU emulator</para>
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</listitem>
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</itemizedlist>
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@ -331,9 +331,8 @@
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<tip><para>
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To help conserve disk space during builds, you can add the following statement
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to your <filename>local.conf</filename> file in the Yocto Project build
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directory, which for this example
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is <filename>edison-6.0-build</filename>.
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to your project's configuration file, which for this example
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is <filename>edison-6.0-build/conf/local.conf</filename>.
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Adding this statement deletes the work directory used for building a package
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once the package is built.
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<literallayout class='monospaced'>
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@ -342,16 +341,15 @@
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</para></tip>
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<itemizedlist>
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<listitem><para>The first command retrieves the Yocto Project release tarball from the
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source repositories.
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Notice, the example uses the <filename>wget</filename> shell command.
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<listitem><para>In the previous example, the first command retrieves the Yocto Project
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release tarball from the source repositories using the
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<filename>wget</filename> command.
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Alternatively, you can go to the
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<ulink url='http://www.yoctoproject.org'>Yocto Project website</ulink> downloads
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area to retrieve the tarball.</para></listitem>
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<ulink url='http://www.yoctoproject.org/download'>Yocto Project website</ulink>
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Downloads page to retrieve the tarball.</para></listitem>
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<listitem><para>The second command extracts the files from the tarball and places
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them into a directory named <filename>poky-edison-6.0</filename> in the current
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directory.
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</para></listitem>
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directory.</para></listitem>
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<listitem><para>The third command runs the Yocto Project environment setup script.
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Running this script defines Yocto Project build environment settings needed to
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complete the build.
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@ -364,19 +362,18 @@
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</para></listitem>
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</itemizedlist>
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<para>
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Take some time to examine your <filename>conf/local.conf</filename> file found in the
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Yocto Project build directory.
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The defaults in the <filename>local.conf</filename> should work fine.
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Take some time to examine your <filename>local.conf</filename> file
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in your project's configuration directory.
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The defaults in that file should work fine.
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However, there are some variables of interest at which you might look.
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</para>
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<para>
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By default, the target architecture for the build is <filename>qemux86</filename>,
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which is an image that can be used in the QEMU emulator and is targeted for an
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which produces an image that can be used in the QEMU emulator and is targeted at an
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<trademark class='registered'>Intel</trademark> 32-bit based architecture.
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To change this default, edit the value of the <filename>MACHINE</filename> variable in the
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<filename>conf/local.conf</filename> file in the build directory before
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launching the build.
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To change this default, edit the value of the <filename>MACHINE</filename> variable
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in the configuration file before launching the build.
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</para>
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<para>
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@ -384,12 +381,12 @@
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<ulink url='http://www.yoctoproject.org/docs/1.1/poky-ref-manual/poky-ref-manual.html#var-BB_NUMBER_THREADS'><filename>BB_NUMBER_THREADS</filename></ulink> and the
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<ulink url='http://www.yoctoproject.org/docs/1.1/poky-ref-manual/poky-ref-manual.html#var-PARALLEL_MAKE'><filename>PARALLEL_MAKE</filename></ulink> variables.
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By default, these variables are commented out.
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However, if you have a multi-core CPU you might want to remove the comment
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and set the variable
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However, if you have a multi-core CPU you might want to uncomment
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the lines and set the variable
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<filename>BB_NUMBER_THREADS</filename> equal to twice the number of your
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host's processor cores.
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Also, you could set the variable <filename>PARALLEL_MAKE</filename> equal to the number
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of processor cores.
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Also, you could set the variable <filename>PARALLEL_MAKE</filename> equal to
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1.5 times the number of processor cores.
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Setting these variables can significantly shorten your build time.
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</para>
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<title>Installing the Toolchain</title>
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<para>
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You can download the pre-built toolchain, which includes the <filename>runqemu</filename>
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script and support files, from
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<ulink url='http://yoctoproject.org/downloads/yocto-1.1/toolchain/'></ulink>.
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script and support files, from the appropriate directory under
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<ulink url='http://downloads.yoctoproject.org/releases/yocto/yocto-1.1/toolchain/'></ulink>.
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Toolchains are available for 32-bit and 64-bit development systems from the
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<filename>i686</filename> and <filename>x86_64</filename> folders, respectively.
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<filename>i686</filename> and <filename>x86_64</filename> directories, respectively.
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Each type of development system supports five target architectures.
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The tarball files are named such that a string representing the host system appears
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first in the filename and then is immediately followed by a string representing
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</para>
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<literallayout class='monospaced'>
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yocto-eglibc<<emphasis>host_system</emphasis>>-<<emphasis>arch</emphasis>>-toolchain-gmae-<<emphasis>release</emphasis>>.tar.bz2
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poky-eglibc<<emphasis>host_system</emphasis>>-<<emphasis>arch</emphasis>>-toolchain-gmae-<<emphasis>release</emphasis>>.tar.bz2
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Where:
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<<emphasis>host_system</emphasis>> is a string representing your development system:
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</para>
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<literallayout class='monospaced'>
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yocto-eglibc-x86_64-i586-toolchain-gmae-1.1.tar.bz2
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poky-eglibc-x86_64-i586-toolchain-gmae-1.1.tar.bz2
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</literallayout>
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<para>
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<para>
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<literallayout class='monospaced'>
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$ cd /
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$ sudo tar -xvjf ~/toolchains/yocto-eglibc-x86_64-i586-toolchain-gmae-1.1.tar.bz2
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$ sudo tar -xvjf ~/toolchains/poky-eglibc-x86_64-i586-toolchain-gmae-1.1.tar.bz2
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</literallayout>
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</para>
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"<ulink url='http://www.yoctoproject.org/docs/1.1/adt-manual/adt-manual.html#using-an-existing-toolchain-tarball'>Using a Cross-Toolchain Tarball</ulink>" and
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"<ulink url='http://www.yoctoproject.org/docs/1.1/adt-manual/adt-manual.html#using-the-toolchain-from-within-the-build-tree'>Using BitBake and the Yocto Project Build Tree</ulink>" sections in
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<ulink url='http://www.yoctoproject.org/docs/1.1/adt-manual/adt-manual.html'>The Yocto Project
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Application Development Toolkit (ADT) Development Manual</ulink>.
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Application Development Toolkit (ADT) User's Guide</ulink>.
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</para>
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</section>
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<para>
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You can download the pre-built Linux kernel suitable for running in the QEMU emulator from
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<ulink url='http://yoctoproject.org/downloads/yocto-1.1/machines/qemu'></ulink>.
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<ulink url='http://downloads.yoctoproject.org/releases/yocto/yocto-1.1/machines/qemu'></ulink>.
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Be sure to use the kernel that matches the architecture you want to simulate.
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Download areas exist for the five supported machine architectures:
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<filename>qemuarm</filename>, <filename>qemumips</filename>, <filename>qemuppc</filename>,
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<para>
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Most kernel files have one of the following forms:
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<literallayout class='monospaced'>
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*zImage-<<emphasis>kernel-rev</emphasis>>-qemu<<emphasis>arch</emphasis>>-<<emphasis>release</emphasis>>*.bin
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vmlinux-<<emphasis>kernel-rev</emphasis>>-qemu<<emphasis>arch</emphasis>>-<<emphasis>release</emphasis>>*.bin
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*zImage-qemu<<emphasis>arch</emphasis>>.bin
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vmlinux-qemu<<emphasis>arch</emphasis>>.bin
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Where:
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<<emphasis>kernel-rev</emphasis>> is the base Linux kernel revision
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(e.g. 2.6.37).
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<<emphasis>arch</emphasis>> is a string representing the target architecture:
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x86, x86-64, ppc, mips, or arm.
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<<emphasis>release</emphasis>> is the version of Yocto Project.
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</literallayout>
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</para>
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<para>
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You can also download the filesystem image suitable for your target architecture from
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<ulink url='http://yoctoproject.org/downloads/yocto-1.1/machines/qemu'></ulink>.
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<ulink url='http://downloads.yoctoproject.org/releases/yocto/yocto-1.1/machines/qemu'></ulink>.
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Again, be sure to use the filesystem that matches the architecture you want
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to simulate.
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</para>
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The <filename>tar</filename> form can be flattened out in your host development system
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and used for Yocto Project build purposes.
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<literallayout class='monospaced'>
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yocto-image-<<emphasis>profile</emphasis>>-qemu<<emphasis>arch</emphasis>>-<<emphasis>release</emphasis>>.rootfs.ext3.bz2
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yocto-image-<<emphasis>profile</emphasis>>-qemu<<emphasis>arch</emphasis>>-<<emphasis>release</emphasis>>.rootfs.tar.bz2
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core-image-<<emphasis>profile</emphasis>>-qemu<<emphasis>arch</emphasis>>.ext3
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core-image-<<emphasis>profile</emphasis>>-qemu<<emphasis>arch</emphasis>>.tar.bz2
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Where:
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<<emphasis>profile</emphasis>> is the filesystem image's profile:
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lsb, lsb-dev, lsb-sdk, minimal, minimal-dev, sato, sato-dev, or sato-sdk.
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lsb, lsb-dev, lsb-sdk, lsb-qt3, minimal, minimal-dev, sato, sato-dev, or sato-sdk.
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For information on these types of image profiles, see
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<ulink url='http://www.yoctoproject.org/docs/1.1/poky-ref-manual/poky-ref-manual.html#ref-images'>Reference: Images</ulink> in the Yocto Project Reference Manual.
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<<emphasis>arch</emphasis>> is a string representing the target architecture:
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x86, x86-64, ppc, mips, or arm.
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<<emphasis>release</emphasis>> is the version of Yocto Project.
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</literallayout>
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</para>
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</section>
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<literallayout class='monospaced'>
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$ source /opt/poky/1.1/environment-setup-i686-poky-linux
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$ runqemu qemux86 bzImage-3.0-qemux86-1.1.bin \
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yocto-image-sato-qemux86-1.1.rootfs.ext3
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core-image-sato-qemux86.ext3
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</literallayout>
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</para>
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