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kernel-ref: Edits to Recipe-Space Metadata" section.

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This is the first serious re-write of the text from the
original.  Edits to make it more readable.

(From yocto-docs rev: 21c77fdfc9ae1a02b1d02fb113324c96c6aecb5e)

Signed-off-by: scott-lenovo <scott-lenovo@ubuntu.(none)>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
scott-lenovo
2013-01-08 05:48:27 -08:00
committed by Richard Purdie
parent b63272cc16
commit 545f79bfdd
1 changed files with 14 additions and 15 deletions
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29
documentation/kernel-dev/kernel-dev-advanced.xml
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@@ -344,22 +344,24 @@ described in the following sections applies equally.
<title>Recipe-Space Metadata</title>
<para>
When stored in recipe-space, the metadata files reside in a
When stored in recipe-space, the kernel Metadata files reside in a
directory hierarchy below
<ulink url='&YOCTO_DOCS_REF_URL;#var-FILESEXTRAPATHS'><filename>FILESEXTRAPATHS</filename></ulink>,
which is typically set to
<filename>${THISDIR}/${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PN'><filename>PN</filename></ulink><filename>}</filename>
for a linux-yocto or linux-yocto-custom derived Linux kernel
recipe.
<ulink url='&YOCTO_DOCS_REF_URL;#var-FILESEXTRAPATHS'><filename>FILESEXTRAPATHS</filename></ulink>.
For a linux-yocto recipe or for a Linux kernel recipe derived
by copying and modifying
<filename>oe-core/meta-skeleton/recipes-kernel/linux/linux-yocto-custom.bb</filename>
to a recipe in your layer, <filename>FILESEXTRAPATHS</filename>
is typically set to
<filename>${THISDIR}/${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PN'><filename>PN</filename></ulink><filename>}</filename>.
See the "<link linkend='modifying-an-existing-recipe'>Modifying an Existing Recipe</link>"
section for more information.
</para>
<para>
By way of example, a trivial tree of metadata stored in
recipe-space within a BSP layer might look like the following:
Here is an example that shows a trivial tree of kernel Metadata
stored in recipe-space within a BSP layer:
<literallayout class='monospaced'>
meta/
meta-my_bsp_layer/
`-- recipes-kernel
`-- linux
`-- linux-yocto
@@ -370,12 +372,9 @@ described in the following sections applies equally.
</para>
<para>
When the metadata is stored in recipe-space, you must take
When the Metadata is stored in recipe-space, you must take
steps to ensure BitBake has the necessary information to decide
which files to fetch and when they need to be fetched again.
</para>
<para>
what files to fetch and when they need to be fetched again.
It is only necessary to specify the <filename>.scc</filename>
files on the
<ulink url='&YOCTO_DOCS_REF_URL;#var-SRC_URI'><filename>SRC_URI</filename></ulink>.
@@ -385,7 +384,7 @@ described in the following sections applies equally.
Because of this, it is necessary to bump the recipe
<ulink url='&YOCTO_DOCS_REF_URL;#var-PR'><filename>PR</filename></ulink>
value when changing the content of files not explicitly listed
in the SRC_URI.
in the <filename>SRC_URI</filename>.
</para>
<para>