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ref-manual, dev-manual: Review comments applied to package repository

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Changes are the review comments from Paul Eggleton regarding
setting up the optional package repository on the host that
can be used by Smart.  These changes reflect the fact that
the task is not package-type dependent or host web server
dependent.

(From yocto-docs rev: 779989878bcc9501ddc4570519d93325442a8493)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
2013-04-03 08:04:31 -07:00
committed by Richard Purdie
parent c683dfb38f
commit 9a98f403bd
2 changed files with 100 additions and 108 deletions
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43
documentation/ref-manual/ref-classes.xml
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@@ -327,52 +327,53 @@
The first class listed in this variable is used for image generation.
</para>
<para>
If you take the optional step to set up a repository (package feed)
on the development host that can be used by Smart, you can
install packages from the feed while you are running the image
on the target (i.e. runtime installation of packages).
For information on how to set up this repository, see the
"<ulink url='&YOCTO_DOCS_DEV_URL;#setting-up-runtime-package-management'>Setting Up Runtime Package Management</ulink>"
in the Yocto Project Development Manual.
</para>
<para>
The package class you choose can affect build-time performance and has space
ramifications.
In general, building a package with IPK takes about thirty percent less
time as compared to using RPM to build the same or similar package.
This comparison takes into account a complete build of the package with
This comparison takes into account a complete build of the package with
all dependencies previously built.
The reason for this discrepancy is because the RPM package manager
creates and processes more
<ulink url='&YOCTO_DOCS_DEV_URL;#metadata'>Metadata</ulink> than the
The reason for this discrepancy is because the RPM package manager
creates and processes more
<ulink url='&YOCTO_DOCS_DEV_URL;#metadata'>Metadata</ulink> than the
IPK package manager.
Consequently, you might consider setting <filename>PACKAGE_CLASSES</filename>
to "package_ipk" if you are building smaller systems.
</para>
<para>
Before making your decision on package manager, however, you should
Before making your decision on package manager, however, you should
consider some further things about using RPM:
<itemizedlist>
<listitem><para>
RPM starts to provide more abilities than IPK due to
the fact that it processes more metadata.
For example, this information includes individual file types,
file checksum generation and evaluation on install, sparse file
support, conflict detection and resolution for Multilib systems,
For example, this information includes individual file types,
file checksum generation and evaluation on install, sparse file
support, conflict detection and resolution for Multilib systems,
ACID style upgrade, and repackaging abilities for rollbacks.
</para></listitem>
<listitem><para>
For smaller systems, the extra space used for the Berkley
Database and the amount of metadata when using RPM can affect
For smaller systems, the extra space used for the Berkley
Database and the amount of metadata when using RPM can affect
your ability to perform on-device upgrades.
</para></listitem>
<listitem><para>
If you take the steps to set up a repository (package feed)
on the development host that can be used by Smart, you can
install packages from the feed while you are running the image
on the target (i.e. runtime installation of packages).
For information on how to set up this repository, see the
"<ulink url='&YOCTO_DOCS_DEV_URL;#setting-up-runtime-package-management'>Setting Up Runtime Package Management</ulink>"
in the Yocto Project Development Manual.
</para></listitem>
</itemizedlist>
</itemizedlist>
</para>
<para>
You can find additional information on the effects of the package
You can find additional information on the effects of the package
class at these two Yocto Project mailing list links:
<itemizedlist>
<listitem><para><ulink url='&YOCTO_LISTS_URL;/pipermail/poky/2011-May/006362.html'>