Hi,
I think you're right, I got it after I enabled:
# cat /etc/yum.repos.d/CentOS-Sources.repo
[...]
[base-source]
name=CentOS-$releasever - Base Sources
baseurl=http://vault.centos.org/centos/$releasever/os/Source/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
[...]
Then I ran:
# yumdownloader --source kernel.src
Loaded plugins: fastestmirror
Enabling centos-sclo-rh-source repository
Enabling epel-source repository
Enabling updates-source repository
Enabling centos-sclo-sclo-source repository
Enabling extras-source repository
Loading mirror speeds from cached hostfile
epel/x86_64/metalink | 31 kB 00:00:00
epel-source/x86_64/metalink | 29 kB 00:00:00
* base: mirror.imt-systems.com
* centos-sclo-rh: ftp.agdsn.de
* centos-sclo-sclo: de.mirrors.clouvider.net
* epel: fedora.tu-chemnitz.de
* epel-source: fedora.tu-chemnitz.de
* extras: mirror.imt-systems.com
* updates: mirror.scaleuptech.com
base | 3.6 kB 00:00:00
base-source | 2.9 kB 00:00:00
centos-sclo-rh | 3.0 kB 00:00:00
centos-sclo-rh-source | 3.0 kB 00:00:00
centos-sclo-sclo | 3.0 kB 00:00:00
centos-sclo-sclo-source | 3.0 kB 00:00:00
extras | 2.9 kB 00:00:00
extras-source | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
updates-source | 2.9 kB 00:00:00
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
kernel-4.18.0-348.20.1.el7.src.rpm | 121 MB 00:00:01
This version is too recent I think. I'm not sure why it's there?
I then manually downloaded this version, it looks like it's working better:
wget https://vault.centos.org/7.9.2009/os/Source/SPackages/kernel-3.10.0-1160.el7.src.rpm
Regards,
Marco Passerini
________________________________
From: CentOS <centos-bounces@xxxxxxxxxx> on behalf of Phil Perry <pperry@xxxxxxxxxx>
Sent: Tuesday, April 19, 2022 5:46:15 PM
To: centos@xxxxxxxxxx
Subject: Re: Kernel rebuild failling on Centos 7: missing libbpf-devel and dwarves rpm too old
On 19/04/2022 15:56, Passerini Marco wrote:
> Hi,
>
>
> I'm trying to rebuild the kernel specifically on Centos7 from src.rpm but some packages are missing or too old. I managed to get them and compile on Centos8 though. Any advice?
>
>
> # yumdownloader --source kernel.src
>
> # rpm -ivh ./kernel-4.18.0-348.20.1.el7.src.rpm
>
> # rpmbuild -bb --target=`uname -m` ~/rpmbuild/SPECS/kernel.spec
> Building target platforms: x86_64
> Building for target x86_64
> error: Failed build dependencies:
> libbpf-devel is needed by kernel-4.18.0-348.20.1.el7.x86_64
> rpm < 4.13.0.1-19 conflicts with kernel-4.18.0-348.20.1.el7.x86_64
> dwarves < 1.13 conflicts with kernel-4.18.0-348.20.1.el7.x86_64
>
You seem to be trying to build an el8 kernel source on el7?
> # rpm -q dwarves
> dwarves-1.10-1.el7.x86_64
>
> # rpm -q rpm
> rpm-4.11.3-48.el7_9.x86_64
>
> # yum search libbpf-devel
> Loaded plugins: fastestmirror
> Loading mirror speeds from cached hostfile
> * base: de.mirrors.clouvider.net
> * centos-sclo-rh: ftp.tu-chemnitz.de
> * centos-sclo-sclo: centos.mirrors.psw.services
> * epel: ftp.uni-kl.de
> * extras: mirror.imt-systems.com
> * updates: centos.mirror.iphh.net
> Warning: No matches found for: libbpf-devel
> No matches found
>
> # yum info rpm
> Loaded plugins: fastestmirror
> Loading mirror speeds from cached hostfile
> * base: de.mirrors.clouvider.net
> * centos-sclo-rh: ftp.tu-chemnitz.de
> * centos-sclo-sclo: mirror.softaculous.com
> * epel: mirror.nextlayer.at
> * extras: mirror.imt-systems.com
> * updates: centos.mirror.iphh.net
> Installed Packages
> Name : rpm
> Arch : x86_64
> Version : 4.11.3
> Release : 48.el7_9
> Size : 2.5 M
> Repo : installed
>>From repo : updates
> Summary : The RPM package management system
> URL : http://www.rpm.org/
> License : GPLv2+
> Description : The RPM Package Manager (RPM) is a powerful command line driven
> : package management system capable of installing, uninstalling,
> : verifying, querying, and updating software packages. Each software
> : package consists of an archive of files along with information about
> : the package like its version, a description, etc.
>
> # yum info dwarves
> Loaded plugins: fastestmirror
> Loading mirror speeds from cached hostfile
> * base: de.mirrors.clouvider.net
> * centos-sclo-rh: ftp.tu-chemnitz.de
> * centos-sclo-sclo: ftp.antilo.de
> * epel: mirror.de.leaseweb.net
> * extras: mirror.imt-systems.com
> * updates: centos.mirror.iphh.net
> Installed Packages
> Name : dwarves
> Arch : x86_64
> Version : 1.10
> Release : 1.el7
> Size : 199 k
> Repo : installed
>>From repo : epel
> Summary : Debugging Information Manipulation Tools
> URL : http://oops.ghostprotocols.net:81/blog
> License : GPLv2
> Description : dwarves is a set of tools that use the debugging information inserted in
> : ELF binaries by compilers such as GCC, used by well known debuggers such as
> : GDB, and more recent ones such as systemtap.
> :
> : Utilities in the dwarves suite include pahole, that can be used to find
> : alignment holes in structs and classes in languages such as C, C++, but not
> : limited to these.
> :
> : It also extracts other information such as CPU cacheline alignment, helping
> : pack those structures to achieve more cache hits.
> :
> : A diff like tool, codiff can be used to compare the effects changes in source
> : code generate on the resulting binaries.
> :
> : Another tool is pfunct, that can be used to find all sorts of information about
> : functions, inlines, decisions made by the compiler about inlining, etc.
>
>
>
> Regards,
> Marco Passerini
> _______________________________________________
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> CentOS@xxxxxxxxxx
> https://lists.centos.org/mailman/listinfo/centos
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