111 lines
6.6 KiB
XML
111 lines
6.6 KiB
XML
<!DOCTYPE appendix PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<appendix id='ref-images'>
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<title>Reference: Images</title>
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<para>
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The Yocto Project build process supports several types of images to satisfy different needs.
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When you issue the <filename>bitbake</filename> command you provide a “top-level” recipe
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that essentially begins the build for the type of image you want.
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</para>
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<note>
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Building an image without GNU Public License Version 3 (GPLv3) components is
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only supported for minimal and base images.
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Furthermore, if you are going to build an image using non-GPLv3 components,
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you must make the following changes in the <filename>local.conf</filename> file
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before using the BitBake command to build the minimal or base image:
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<literallayout class='monospaced'>
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1. Comment out the EXTRA_IMAGE_FEATURES line
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2. Set INCOMPATIBLE_LICENSE = "GPLv3"
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</literallayout>
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</note>
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<para>
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From within the <filename>poky</filename> Git repository, use the following command to list
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the supported images:
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<literallayout class='monospaced'>
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$ ls meta*/recipes*/images/*.bb
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</literallayout>
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These recipes reside in the <filename>meta/recipes-core/images</filename>,
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<filename>meta/recipes-extended/images</filename>,
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<filename>meta/recipes-graphics/images</filename>, and
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<filename>meta/recipes-sato/images</filename> directories of your local Yocto Project
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file structure (Git repository or extracted release tarball).
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Although the recipe names are somewhat explanatory, here is a list that describes them:
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</para>
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<itemizedlist>
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<listitem><para><emphasis><filename>core-image-base</filename>:</emphasis>
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A console-only image that fully supports the target device hardware.</para></listitem>
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<listitem><para><emphasis><filename>core-image-core</filename>:</emphasis>
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An X11 image with simple applications such as terminal, editor, and file manager.
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</para></listitem>
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<listitem><para><emphasis><filename>core-image-minimal</filename>:</emphasis>
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A small image just capable of allowing a device to boot.</para></listitem>
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<listitem><para><emphasis><filename>core-image-minimal-dev</filename>:</emphasis>
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A <filename>core-image-minimal</filename> image suitable for development work.
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</para></listitem>
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<listitem><para><emphasis><filename>core-image-minimal-initramfs</filename>:</emphasis>
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A <filename>core-image-minimal</filename> image that has the Minimal RAM-based
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Initial Root Filesystem (<filename>initramfs</filename>) as part of the kernel,
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which allows the system to find the first “init” program more efficiently.
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</para></listitem>
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<listitem><para><emphasis><filename>core-image-minimal-mtdutils</filename>:</emphasis>
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A <filename>core-image-minimal</filename> image that has support
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for the Minimal MTD Utilities, which let the user interact with the
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MTD subsystem in the kernel to perform operations on flash devices.
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</para></listitem>
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<listitem><para><emphasis><filename>core-image-basic</filename>:</emphasis>
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A foundational basic image without support for X that can be reasonably used for
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customization.</para></listitem>
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<listitem><para><emphasis><filename>core-image-lsb</filename>:</emphasis>
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A <filename>core-image-basic</filename> image suitable for implementations
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that conform to Linux Standard Base (LSB).</para></listitem>
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<listitem><para><emphasis><filename>core-image-lsb-dev</filename>:</emphasis>
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A <filename>core-image-lsb</filename> image that is suitable for development work.
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</para></listitem>
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<listitem><para><emphasis><filename>core-image-lsb-sdk</filename>:</emphasis>
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A <filename>core-image-lsb</filename> that includes everything in meta-toolchain
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but also includes development headers and libraries to form a complete standalone SDK.
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See the <link linkend='platdev-appdev-external-sdk'>
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External Development Using the Poky SDK</link> section for more information.
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</para></listitem>
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<listitem><para><emphasis><filename>core-image-clutter</filename>:</emphasis>
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An image with support for the Open GL-based toolkit Clutter, which enables development of
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rich and animated graphical user interfaces.</para></listitem>
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<listitem><para><emphasis><filename>core-image-sato</filename>:</emphasis>
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An image with Sato support, a mobile environment and visual style that works well
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with mobile devices.
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The image supports X11 with a Sato theme and Pimlico applications and also
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contains terminal, editor, and file manager.</para></listitem>
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<listitem><para><emphasis><filename>core-image-sato-dev</filename>:</emphasis>
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A <filename>core-image-sato</filename> image suitable for development
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that also includes a native toolchain and libraries needed to build applications on
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the device itself.
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The image also includes testing and profiling tools as well as debug symbols.
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This image was formerly <filename>core-image-sdk</filename>.</para></listitem>
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<listitem><para><emphasis><filename>core-image-sato-sdk</filename>:</emphasis>
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A <filename>core-image-sato</filename> image that includes everything in meta-toolchain.
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The image also includes development headers and libraries to form a complete standalone SDK.
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See the <link linkend='platdev-appdev-external-sdk'>
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External Development Using the Poky SDK</link> section for more information.
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</para></listitem>
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</itemizedlist>
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<tip>
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From the Yocto Project release 1.1 onwards, <filename>-live</filename> and
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<filename>-directdisk</filename> images have been replaced by a "live"
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option in <filename>IMAGE_FSTYPES</filename> that will work with any image to produce an
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image file that can be
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copied directly to a CD or USB device and run as is.
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To build a live image, simply add
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"live" to <filename>IMAGE_FSTYPES</filename> within the <filename>local.conf</filename>
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file or wherever appropriate and then build the desired image as normal.
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</tip>
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</appendix>
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