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ref-manual: Added Smart-enabled package feed info to section. 

There are steps the user can take to create a host-resident
package feed (repository) whose front-end is Smart.
The setup allows the user to install packages from the host
feed during runtime on the target.  The changes I made now
include that fact.

I also reformatted into a list some of the RPM limitations
and benefits as they now numbered such that I could list
them out as such.

(From yocto-docs rev: bb733ec59c9275071ff5ff017adc52073d4dcef8)

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 2013-04-02 09:09:15 -07:00 committed by Richard Purdie
parent 10da562f61
commit 4ce46de598
1 changed files with 33 additions and 19 deletions
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52
documentation/ref-manual/ref-classes.xml
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@ -330,12 +330,12 @@
<para>
The package class you choose can affect build-time performance and has space
ramifications.
In general, building a package with RPM takes about thirty percent more time as
compared to using IPK to build the same or similar package.
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
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
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
IPK package manager.
Consequently, you might consider setting <filename>PACKAGE_CLASSES</filename>
@ -343,22 +343,36 @@
</para>
<para>
Keep in mind, however, that 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, ACID style upgrade, and repackaging abilities for rollbacks.
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,
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
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
"NEED LINK" section in the Yocto Project Development Manual.
</para></listitem>
</itemizedlist>
</para>
<para>
Another consideration for packages built using the RPM package manager is space.
For smaller systems, the extra space used for the Berkley Database and the amount
of metadata can affect your ability to perform on-device upgrades.
</para>
<para>
You can find additional information on the effects of the package class at these
two Yocto Project mailing list links:
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'>
https://lists.yoctoproject.org/pipermail/poky/2011-May/006362.html</ulink></para></listitem>