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multi-kernel: add a comment on the addition of preparekernel task

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As suggested by Richard:
https://lists.yoctoproject.org/pipermail/meta-ti/2012-March/000869.html
While at it, reformat the header.

Signed-off-by: Denys Dmytriyenko <denys@ti.com>
This commit is contained in:
Denys Dmytriyenko
2012-03-30 01:54:27 -04:00
parent f02d5e7906
commit c5bb2de922
1 changed files with 18 additions and 8 deletions
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26
recipes-kernel/linux/multi-kernel.inc
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@@ -1,14 +1,24 @@
# This .inc file allows you to build and deploy multiple sets of kernel + modules with different defconfigs
# This .inc file allows building and deploying multiple sets of kernel + modules
# with different defconfigs
#
# Note that this include will NOT stage anything nor create packages, since that is virtually impossible
# Userspace should be built against the 'regular' kernel
# Note that this include will NOT stage anything nor create packages, since that
# is virtually impossible. Userspace should be built against the 'regular' kernel
#
# The intended usecase is for machines that have mutually exclusive drivers due to e.g. pinmuxing issues.
# For example the LogicPD omap-l138 experimenter board can have multiple mutually exclusive expansion boards
# like lcd, ethernet, sound, 20x2 character LCD, etc. To be able to easily test all of those you can use this .inc
# The intended usecase is for machines that have mutually exclusive drivers due
# to e.g. pinmuxing issues. For example the LogicPD omap-l138 experimenter board
# can have multiple mutually exclusive expansion boards like lcd, ethernet,
# sound, 20x2 character LCD, etc. To be able to easily test all of those you can
# use this .inc
#
# To make it easier finding the original defconfig from a running kernel, this also forcefully turns on
# CONFIG_IKCONFIG_PROC so people can do 'zcat /proc/config.gz' on the target.
# To make it easier finding the original defconfig from a running kernel, this
# also forcefully turns on CONFIG_IKCONFIG_PROC so people can do
# 'zcat /proc/config.gz' on the target.
#
# The function get_kernelversion uses generated header files to extract the
# version number. But those files are not available until do_compile, and
# do_compileconfigs is injected before that, hence the version becomes None
# and breaks in several places. Introduce a task do_preparekernel that calls
# "make prepare" in the kernel tree to generate all the necessary files.
require linux.inc