Closed issue by absrd on void-packages repository

https://github.com/void-linux/void-packages/issues/24249

Description:
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### System

* xuname:  
`Void 5.7.15_1 x86_64 AuthenticAMD uptodate hold rrrmFFFFFFFFFFF`
* package:  
  - linux5.8-5.8.1_1
  - linux5.8-headers-5.8.1_1

### Expected behavior
Building DKMS module zfs for Linux 5.8 succeeds

### Actual behavior
Building DKMS module zfs for Linux 5.8 fails

### Steps to reproduce the behavior
1. Install zfs.
2. `$ xbps-install linux5.8 linux5.8-headers`

```
$ xbps-install linux5.8 linux5.8-headers

Name             Action    Version           New version            Download size
linux5.8         install   -                 5.8.1_1                -
linux5.8-headers install   -                 5.8.1_1                -

Size required on disk:         139MB
Space available on disk:       153GB

Do you want to continue? [Y/n] y

[*] Verifying package integrity
linux5.8-5.8.1_1: verifying RSA signature...
linux5.8-headers-5.8.1_1: verifying RSA signature...

[*] Collecting package files
linux5.8-5.8.1_1: collecting files...
linux5.8-headers-5.8.1_1: collecting files...

[*] Unpacking packages
linux5.8-5.8.1_1: unpacking ...
linux5.8-headers-5.8.1_1: unpacking ...

[*] Configuring unpacked packages
linux5.8-5.8.1_1: configuring ...
Executing post-install kernel hook: 10-dkms ...
Available DKMS module: wireguard-1.0.20200729.
Available DKMS module: zfs-0.8.4.
Building DKMS module: wireguard-1.0.20200729... skipped!
Building DKMS module: zfs-0.8.4... FAILED!
...
```