Failed to build WSL kernel 6.6.y (6.6.36.6)

[wheeheee]

Windows Version

Microsoft Windows [Version 10.0.26100.2605]

WSL Version

2.3.26.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.167.4-1

Distro Version

Fedora 41 (fedora remix)

Other Software

No response

Repro Steps

Following https://github.com/microsoft/WSL2-Linux-Kernel,

$ sudo dnf install git @development-tools @c-development kernel-devel dwarves elfutils-libelf-devel openssl-devel-engine
$ cd WSL2-Linux-Kernel
$ make -j$(nproc) KCONFIG_CONFIG=Microsoft/config-wsl

Expected Behavior

Builds the kernel without errors, or gives an informative error message.

Actual Behavior

$ make -j$(nproc) KCONFIG_CONFIG=Microsoft/config-wsl
... (lots of output)
  CC [M]  fs/btrfs/bio.o
  CC [M]  fs/btrfs/lru_cache.o
  CC [M]  fs/btrfs/acl.o
  CC [M]  fs/btrfs/zoned.o
  LD [M]  fs/btrfs/btrfs.o
make[1]: *** [/home/woodoo/WSL2-Linux-Kernel/Makefile:1921: .] Error 2
make: *** [Makefile:234: __sub-make] Error 2

Diagnostic Logs

strace output in gist
https://gist.github.com/wheeheee/53281ccdaed9c21894834cbb12082c6c

[github-actions]

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View similar issues

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it!

Closed similar issues:

• wsl2 fail to build kernel (#10126), similarity score: 0.75
• linux-msft-wsl-5.10.93.2 kernel fails to compile (#8045), similarity score: 0.75
• Trying to compile a kernel results in "FAILED: load BTF from vmlinux: No such file or directory" (#10299), similarity score: 0.73
• make of 5.10.60.1 fails (#7558), similarity score: 0.73
• An error occurred during make. (This is my first time, so please let me know if there are any issues.) (#11663), similarity score: 0.71

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[wheeheee]

WslLogs-2025-01-04_17-31-41.zip

[github-actions]

Diagnostic information

Detected appx version: 2.3.26.0

[chessturo]

It looks like one of the commands failed (but the parallel jobs continued to run, so the output from the failure isn't at the bottom). Since the strace output only follows the first make command, there's not much I can do with it. Could you please post the full output of the make command?

[wheeheee]

Ok, realized after running make without cleaning the folder that the openssl package was also required, not just openssl-dev that was installed. I guess it comes pre-installed on Ubuntu, but not on fedora/remix.

[wheeheee]

Maybe the openssl dependency could be added to the documentation, but it's resolved for me so I'll close the issue.