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yocto-project-qs: Updates to how to use local directories for source 

The section that describes an efficient way to set up the
build system to look in local areas for tarballs needed updated
so that PREMIRRORS was not the focus.  The example used does
not even employ PREMIRRORS.  So I changed wording to support
the example.  I also added a mention of the PREMIRRORS variable
and a linked reference to it for more information.

(From yocto-docs rev: 7966942e2dfad85c2eb9480d7f706355871c40ab)

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 2013-02-04 12:34:51 -06:00 committed by Richard Purdie
parent c6f133f50e
commit 846a33ee75
1 changed files with 20 additions and 10 deletions
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30
documentation/yocto-project-qs/yocto-project-qs.xml
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@ -818,17 +818,19 @@
</para> </para>
<para> <para>
A good deal that goes into a Yocto Project build is simply downloading all of the source A good deal that goes into a Yocto Project build is simply
tarballs. downloading all of the source tarballs.
Maybe you have been working with another build system (OpenEmbedded or Angstrom) for which Maybe you have been working with another build system
you've built up a sizable directory of source tarballs. (OpenEmbedded or Angstrom) for which you have built up a sizable
Or perhaps someone else has such a directory for which you have read access. directory of source tarballs.
If so, you can save time by adding the <filename>PREMIRRORS</filename> Or, perhaps someone else has such a directory for which you have
statement to your configuration file so that the build process checks read access.
local directories first for existing tarballs before checking the If so, you can save time by adding statements to your
configuration file so that the build process checks local
directories first for existing tarballs before checking the
Internet. Internet.
Here is an efficient way to set it up in your <filename>local.conf</filename> Here is an efficient way to set it up in your
file: <filename>local.conf</filename> file:
<literallayout class='monospaced'> <literallayout class='monospaced'>
SOURCE_MIRROR_URL ?= "file:///home/you/your-download-dir/" SOURCE_MIRROR_URL ?= "file:///home/you/your-download-dir/"
INHERIT += "own-mirrors" INHERIT += "own-mirrors"
@ -836,6 +838,14 @@
# BB_NO_NETWORK = "1" # BB_NO_NETWORK = "1"
</literallayout> </literallayout>
</para> </para>
<para>
You can also use the
<ulink url='&YOCTO_DOCS_REF_URL;#var-PREMIRRORS'><filename>PREMIRRORS</filename></ulink>
variable.
For an example, see the variable's glossary entry in the
Yocto Project Reference Manual.
</para>
</section> </section>
<section id='building-the-image'> <section id='building-the-image'>