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poky/meta/classes/linux-kernel-base.bbclass
Richard Purdie e68aecd2a4 kernel/linux-kernel-base: Fix kernel build artefact determinism issues
With the 6.1 kernel we've seen reproducibility/determinism issues where the kernel
seems to rebuild headers referencing the hostname or local user. kernel-devsrc
building after the kernel seemed to trigger it in some cases.

Moving the definitions to the bbclass used by all the kernel recipe code including
kernel-devsrc seems to be the best way to ensure this doesn't happen.

(From OE-Core rev: 4c302827365903b99a517651c2a14661ce78f79b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 60681baa97daf4f3856453c34d6be08b6771a81b)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2023-02-15 21:46:56 +00:00

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# parse kernel ABI version out of <linux/version.h>
def get_kernelversion_headers(p):
import re
fn = p + '/include/linux/utsrelease.h'
if not os.path.isfile(fn):
# after 2.6.33-rc1
fn = p + '/include/generated/utsrelease.h'
if not os.path.isfile(fn):
fn = p + '/include/linux/version.h'
try:
f = open(fn, 'r')
except IOError:
return None
l = f.readlines()
f.close()
r = re.compile("#define UTS_RELEASE \"(.*)\"")
for s in l:
m = r.match(s)
if m:
return m.group(1)
return None
def get_kernelversion_file(p):
fn = p + '/kernel-abiversion'
try:
with open(fn, 'r') as f:
return f.readlines()[0].strip()
except IOError:
return None
def linux_module_packages(s, d):
suffix = ""
return " ".join(map(lambda s: "kernel-module-%s%s" % (s.lower().replace('_', '-').replace('@', '+'), suffix), s.split()))
export KBUILD_BUILD_VERSION = "1"
export KBUILD_BUILD_USER ?= "oe-user"
export KBUILD_BUILD_HOST ?= "oe-host"
# that's all