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kernel-dev: Added kernel-devsrc information for building on target

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I added a clarifying paragraph at the start of the section that talks
about building on the target hardware.  Included kernel-devsrc and
rationale for why a user would even do this (it is not normal).

(From yocto-docs rev: 95ae213b80cb45b5e9b7b161b2968dca6315e1da)

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
2015-06-01 08:31:54 -06:00
committed by Richard Purdie
parent 8a19731e4d
commit 8124686aa2
1 changed files with 18 additions and 2 deletions
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documentation/kernel-dev/kernel-dev-common.xml
+18 -2
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@@ -735,13 +735,27 @@
<section id='building-out-of-tree-modules-on-the-target'> <section id='building-out-of-tree-modules-on-the-target'>
<title>Building Out-of-Tree Modules on the Target</title> <title>Building Out-of-Tree Modules on the Target</title>
<para>
While the traditional Yocto Project development model would be
to include kernel modules as part of the normal build
process, you might find it useful to build modules on the
target.
This could be the case if your target system is capable
and powerful enough to handle the necessary compilation.
Before deciding to build on your target, however, you should
consider the benefits of using a proper cross-development
environment from your build host.
</para>
<para> <para>
If you want to be able to build out-of-tree modules on If you want to be able to build out-of-tree modules on
the target, there are some steps you need to take the target, there are some steps you need to take
on the target that is running your SDK image. on the target that is running your SDK image.
Briefly, the <filename>kernel-dev</filename> package Briefly, the <filename>kernel-dev</filename> package
is installed by default on all is installed by default on all
<filename>*.sdk</filename> images. <filename>*.sdk</filename> images and the
<filename>kernel-devsrc</filename> package is installed
on many of the <filename>*.sdk</filename> images.
However, you need to create some scripts prior to However, you need to create some scripts prior to
attempting to build the out-of-tree modules on the target attempting to build the out-of-tree modules on the target
that is running that image. that is running that image.
@@ -759,7 +773,9 @@
Because all SDK image recipes include Because all SDK image recipes include
<filename>dev-pkgs</filename>, the <filename>dev-pkgs</filename>, the
<filename>kernel-dev</filename> packages will be installed <filename>kernel-dev</filename> packages will be installed
as part of the SDK image. as part of the SDK image and the
<filename>kernel-devsrc</filename> packages will be installed
as part of applicable SDK images.
The SDK uses the scripts when building out-of-tree The SDK uses the scripts when building out-of-tree
modules. modules.
Once you have switched to that directory and created the Once you have switched to that directory and created the