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.. SPDX-License-Identifier: CC-BY-2.0-UK
******
Images
******
The OpenEmbedded build system provides several example images to satisfy
different needs. When you issue the ``bitbake`` command you provide a
“top-level” recipe that essentially begins the build for the type of
image you want.
.. note::
Building an image without GNU General Public License Version 3
(GPLv3), GNU Lesser General Public License Version 3 (LGPLv3), and
the GNU Affero General Public License Version 3 (AGPL-3.0) components
is only supported for minimal and base images. Furthermore, if you
are going to build an image using non-GPLv3 and similarly licensed
components, you must make the following changes in the
local.conf
file before using the BitBake command to build the minimal or base
image:
::
1. Comment out the EXTRA_IMAGE_FEATURES line
2. Set INCOMPATIBLE_LICENSE = "GPL-3.0 LGPL-3.0 AGPL-3.0"
From within the ``poky`` Git repository, you can use the following
command to display the list of directories within the :term:`Source Directory`
that contain image recipe files: $ ls
meta*/recipes*/images/*.bb
Following is a list of supported recipes:
- ``build-appliance-image``: An example virtual machine that contains
all the pieces required to run builds using the build system as well
as the build system itself. You can boot and run the image using
either the `VMware
Player <http://www.vmware.com/products/player/overview.html>`__ or
`VMware
Workstation <http://www.vmware.com/products/workstation/overview.html>`__.
For more information on this image, see the `Build
Appliance <&YOCTO_HOME_URL;/software-item/build-appliance/>`__ page
on the Yocto Project website.
- ``core-image-base``: A console-only image that fully supports the
target device hardware.
- ``core-image-clutter``: An image with support for the Open GL-based
toolkit Clutter, which enables development of rich and animated
graphical user interfaces.
- ``core-image-full-cmdline``: A console-only image with more
full-featured Linux system functionality installed.
- ``core-image-lsb``: An image that conforms to the Linux Standard Base
(LSB) specification. This image requires a distribution configuration
that enables LSB compliance (e.g. ``poky-lsb``). If you build
``core-image-lsb`` without that configuration, the image will not be
LSB-compliant.
- ``core-image-lsb-dev``: A ``core-image-lsb`` image that is suitable
for development work using the host. The image includes headers and
libraries you can use in a host development environment. This image
requires a distribution configuration that enables LSB compliance
(e.g. ``poky-lsb``). If you build ``core-image-lsb-dev`` without that
configuration, the image will not be LSB-compliant.
- ``core-image-lsb-sdk``: A ``core-image-lsb`` that includes everything
in the cross-toolchain but also includes development headers and
libraries to form a complete standalone SDK. This image requires a
distribution configuration that enables LSB compliance (e.g.
``poky-lsb``). If you build ``core-image-lsb-sdk`` without that
configuration, the image will not be LSB-compliant. This image is
suitable for development using the target.
- ``core-image-minimal``: A small image just capable of allowing a
device to boot.
- ``core-image-minimal-dev``: A ``core-image-minimal`` image suitable
for development work using the host. The image includes headers and
libraries you can use in a host development environment.
- ``core-image-minimal-initramfs``: A ``core-image-minimal`` image that
has the Minimal RAM-based Initial Root Filesystem (initramfs) as part
of the kernel, which allows the system to find the first “init”
program more efficiently. See the
:term:`PACKAGE_INSTALL` variable for
additional information helpful when working with initramfs images.
- ``core-image-minimal-mtdutils``: A ``core-image-minimal`` image that
has support for the Minimal MTD Utilities, which let the user
interact with the MTD subsystem in the kernel to perform operations
on flash devices.
- ``core-image-rt``: A ``core-image-minimal`` image plus a real-time
test suite and tools appropriate for real-time use.
- ``core-image-rt-sdk``: A ``core-image-rt`` image that includes
everything in the cross-toolchain. The image also includes
development headers and libraries to form a complete stand-alone SDK
and is suitable for development using the target.
- ``core-image-sato``: An image with Sato support, a mobile environment
and visual style that works well with mobile devices. The image
supports X11 with a Sato theme and applications such as a terminal,
editor, file manager, media player, and so forth.
- ``core-image-sato-dev``: A ``core-image-sato`` image suitable for
development using the host. The image includes libraries needed to
build applications on the device itself, testing and profiling tools,
and debug symbols. This image was formerly ``core-image-sdk``.
- ``core-image-sato-sdk``: A ``core-image-sato`` image that includes
everything in the cross-toolchain. The image also includes
development headers and libraries to form a complete standalone SDK
and is suitable for development using the target.
- ``core-image-testmaster``: A "master" image designed to be used for
automated runtime testing. Provides a "known good" image that is
deployed to a separate partition so that you can boot into it and use
it to deploy a second image to be tested. You can find more
information about runtime testing in the "`Performing Automated
Runtime
Testing <&YOCTO_DOCS_DEV_URL;#performing-automated-runtime-testing>`__"
section in the Yocto Project Development Tasks Manual.
- ``core-image-testmaster-initramfs``: A RAM-based Initial Root
Filesystem (initramfs) image tailored for use with the
``core-image-testmaster`` image.
- ``core-image-weston``: A very basic Wayland image with a terminal.
This image provides the Wayland protocol libraries and the reference
Weston compositor. For more information, see the "`Using Wayland and
Weston <&YOCTO_DOCS_DEV_URL;#dev-using-wayland-and-weston>`__"
section in the Yocto Project Development Tasks Manual.
- ``core-image-x11``: A very basic X11 image with a terminal.
|
