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kernel: predefine KBUILD_BUILD_USER and KBUILD_BUILD_HOST

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By exporting KBUILD_BUILD_USER with a pre-defined value we improve the
reproducibility of the kernel and remove the requirement for whoami in the
HOSTTOOLS.
KBUILD_BUILD_HOST also helps improve the reproducibility of the kernel.

For more kernel reproducibility options see:
https://lwn.net/Articles/437864/

(From OE-Core rev: 357801a491efc067c6d4bd9a2bfa6fff460357aa)

Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Joshua Lock
2017-05-19 16:53:06 +01:00
committed by Richard Purdie
parent fa7a1f2115
commit 607bd9ec39
1 changed files with 2 additions and 0 deletions
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2
meta/classes/kernel.bbclass
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@@ -130,6 +130,8 @@ PACKAGES_DYNAMIC += "^kernel-firmware-.*"
export OS = "${TARGET_OS}"
export CROSS_COMPILE = "${TARGET_PREFIX}"
export KBUILD_BUILD_USER = "oe-user"
export KBUILD_BUILD_HOST = "oe-host"
KERNEL_PRIORITY ?= "${@int(d.getVar('PV').split('-')[0].split('+')[0].split('.')[0]) * 10000 + \
int(d.getVar('PV').split('-')[0].split('+')[0].split('.')[1]) * 100 + \