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** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1879161
Title:
Building linux-image-unsigned with existing .config fails
Status in linux package in Ubuntu:
Incomplete
Bug description:
Objective: For a working 4.15.0-99-generic (x86_64) on Ubuntu 18.04.4
LTS (Bionic Beaver), re-build the Linux kernel sources with
CONFIG_NO_HZ_FULL=y.
Steps followed:
Uncomment deb-src in /etc/apt/sources.list, so that we can obtain the
Linux kernel sources, and run "apt-get update".
$ sudo apt-get build-dep linux-image-4.15.0-99-generic
$ sudo apt-get install libncurses5-dev flex bison openssl libssl-dev dkms
libelf-dev \
libudev-dev libpci-dev libiberty-dev autoconf
$ mkdir code/kernel; cd code/kernel
$ apt source linux-image-unsigned-4.15.0-99-generic
$ cd linux-4.15.0
$ chmod a+x debian/rules
$ chmod a+x debian/scripts/*
$ chmod a+x debian/scripts/misc*
$ fakeroot debian/rules clean
$ cp /boot/config-4.15.0-99-generic .config
$ fakeroot debian/rules startnewrelease
dh_testdir
Creating new changelog set 4.15.0-100.101...
$ fakeroot debian/rules editconfigs
Edit amd64/config.flavour.generic, set CONFIG_NO_HZ_FULL and save
config to .config.
$ fakeroot debian/rules binary
The outputs are in the attached files: binary-build-output.txt and
binary-build-error.txt.
In order to handle ABI, I touched an ignore file in
debian.master/abi/4.15.0-97.98/amd64/ignore and the relevant output
files are binary-build-output-no-abi.txt and binary-build-error-no-
abi.txt.
The linux-image...deb file did not get created. The following files were
created:
linux-cloud-tools-common_4.15.0-99.100_all.deb
linux-doc_4.15.0-99.100_all.deb
linux-headers-4.15.0-99_4.15.0-99.100_all.deb
linux-source-4.15.0_4.15.0-99.100_all.deb
linux-tools-common_4.15.0-99.100_all.deb
linux-tools-host_4.15.0-99.100_all.deb
I used the following documents for reference:
https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel
https://ahelpme.com/linux/ubuntu/rebuild-the-official-ubuntu-kernel-
ubuntu-16-04-lts/
https://help.ubuntu.com/community/Kernel/Compile
Most of the documentation seem outdated or do not work as expected.
Questions:
1. Can you please provide a tutorial on how to re-build a Ubuntu
specific kernel with a working .config successfully?
2. Should we use apt source "linux" instead of using a specific kernel
version?
3. From 'dpkg -l | grep linux-image', I see:
ii linux-image-4.15.0-99-generic 4.15.0-99.100 amd64 Signed
kernel image generic
What is the meaning of the naming (4.15.0-99-generic and
4.15.0-99.100) convention used here?
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