Failing to compile on Fedora 34, kernel-headers outdated (but up to date according to dnf)

[tmkcell]

I tried to compile 5.11 upds and 5.12 cacule, but they both failed as they said
https://i.imgur.com/1YrKKGv.png
running kernel-headers 5.12.9-300

[xsmaze]

I've also had this problem on a clean install of Fedora 34 on 5.12.10-300.

[AdelKS]

Hello, I cannot see the error message, can you just copy your entire build log and attach it ? Please also provide your customization.cfg. I will have a look.

[tmkcell]

here is customization.cfg
and as for the build log, if you mean the output from the terminal when I install it, here it is

[AdelKS]

Oh I see, it's a duplicate of #173 that got closed even though it didn't get fixed. Unfortunately, I do not know what's the root of this issue up until now... :/

[tmkcell]

oh i see... well is there any other way to install the kernel?

[AdelKS]

Actually, there is, you can use Generic as distro, you will need to have dracut installed. And the installed files will not be tracked by dnf.

• A folder gets installed in /lib/modules
• The kernel image vmlinuz-****, the initramfs initramfs**** and a file called System.map get installed in /boot.
• System headers get installed in /usr/src and they overwrite few files that get installed by one of the Fedora packages, you would need to reinstall that package to restore the original headers
• To uninstall, you need to remove all that manually.

[tmkcell]

alright, will try this

thank you

[AdelKS]

Quick googling gives this: sudo dnf install kernel-devel, try that ? (basically reinstall the kernel-devel package).

[tmkcell]

I tried that, it doesn't seem to work
And for some reason, the generic option doesn't seem to compile the kernel but it does make a kernel.new file, don't know what to do with that though

[AdelKS]

Oh wait, you need to do ./install.sh install not config

[tmkcell]

I tried that, but it just exited
On a sidenote, I think I found out why the kernel wouldn't install, the kernel headers are located in a different place than normal, as when I was trying to install some dkms driver, it said it couldn't find the kernel headers at the place
Error! echo Your kernel headers for kernel 5.12.10-300.fc34.x86_64 cannot be found at /lib/modules/5.12.10-300.fc34.x86_64/build or /lib/modules/5.12.10-300.fc34.x86_64/source. You can use the --kernelsourcedir option to tell DKMS where it's located.

[AdelKS]

I tried that, but it just exited

Can you attach the output on your terminal ? (you can make a text file then drag and drop it in the text you write here, you don't need to use a third-party service)

the kernel headers are located in a different place than normal, as when I was trying to install some dkms driver, it said it couldn't find the kernel headers at the place

Interesting find, I will see if I can do something based on this new information

[iWeaker]

I tried that, but it just exited
On a sidenote, I think I found out why the kernel wouldn't install, the kernel headers are located in a different place than normal, as when I was trying to install some dkms driver, it said it couldn't find the kernel headers at the place
Error! echo Your kernel headers for kernel 5.12.10-300.fc34.x86_64 cannot be found at /lib/modules/5.12.10-300.fc34.x86_64/build or /lib/modules/5.12.10-300.fc34.x86_64/source. You can use the --kernelsourcedir option to tell DKMS where it's located.

It is because the symlink is not generated correctly, here I have an example that the symlink is badly done, in fact the build "folder" marks it in red

But with the tkg kernel, the symlink is correct. I leave image.

If the folder appears in red, delete it and apply this.

sudo ln -s /usr/src/kernels/5.12.11-301.fsync.fc34.x86_64+debug /lib/modules/5.12.11-301.fsync.fc34.x86_64/build

Of course, it must be your kernel version in both cases, I have that kernel version that did not work but already applying this, it works without problems.

[AdelKS]

Hello! Please try PR #610 to confirm that it fixes this issue. It worked like a charm in my VM.

Adel

[Tk-Glitch]

Should be fixed with 1d063ca