# How to get kernel build date on Raspberry Pi for mender integration checklist?

**URL:** <https://hub.mender.io/t/how-to-get-kernel-build-date-on-raspberry-pi-for-mender-integration-checklist/2826>\
**Category:** General Discussions\
**Tags:** yocto, raspberry, dunfell, linux\
**Created:** [November 13, 2020, 10:10am UTC](https://hub.mender.io/t/how-to-get-kernel-build-date-on-raspberry-pi-for-mender-integration-checklist/2826 "2020-11-13T10:10:15Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ks89](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/ks89/32/86_2.png) [@Ks89](https://hub.mender.io/u/Ks89)\
**Post date:** [November 13, 2020, 10:10am UTC](https://hub.mender.io/t/how-to-get-kernel-build-date-on-raspberry-pi-for-mender-integration-checklist/2826/1 "2020-11-13T10:10:15Z")

</div>

I built a yocto image (dunfell) with u-boot and mender based on meta-raspberry. Everything was ok.

In mender integration checklist I have to check kernel build date in both steps 12 and 16.  
However if I run `cat /proc/version` the result is always:

```auto
Linux version 5.4.72-v7l (oe-user@oe-host) (gcc version 9.3.0 (GCC)) #1 SMP Mon Oct 19 11:12:20 UTC 2020

```

A month ago, before updating sources the result was:

```auto

Linux version 5.4.59-v7 (oe-user@oe-host) (gcc version 9.3.0 (GCC)) #1 SMP Mon Aug 24 16:30:19 UTC 2020

```

Which is the best way to get kernel build date?

Probably I’m missing something, because I don’t understand why kernel has a fixed build date, in particular if compared to linux-imx of -fslc.

thanks

---

<div class="post-metadata">

**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\
**Post date:** [November 13, 2020, 1:04pm UTC](https://hub.mender.io/t/how-to-get-kernel-build-date-on-raspberry-pi-for-mender-integration-checklist/2826/2 "2020-11-13T13:04:22Z")

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Actually with `dunfell` and [reproducible builds](https://wiki.yoctoproject.org/wiki/Reproducible_Builds) enabled as default, timestamps are intentionally kept fixed, so that they do not change the binary.

We have actually updated the integration checklist and this step is omitted (replaced with another one),

> **[Integration checklist | Mender documentation](https://docs.mender.io/development/client-installation/integration-checklist)**