CODEWITHSUNDEEP
shelllinux-kernel
TonyHo
TonyHo

Reputation: 254

How can I get the builder name of the linux kernel

When the linux kernel booting up，it will print the kernel version and builder, and toolchain infomation. Just like below:

Booting Linux on physical CPU 0
Linux version 3.4.24 (whobuilderthis@cl-builder23)

So how to get the builder whobuilderthis string (using shell)? Where does it store? Thanks in advance.

Upvotes: 0

Views: 431

Answers (3)

Ivellios
Ivellios

Reputation: 100

According to Documentation/kbuild/kbuild.rst:

KBUILD_BUILD_USER, KBUILD_BUILD_HOST

These two variables allow to override the user@host string displayed during boot and in /proc/version. The default value is the output of the commands whoami and host, respectively.

So "/proc/version" will output the result of current running kernel. If you want to change the content, you need override the above 2 vars on your kernel build machine.

Upvotes: 0

nif
nif

Reputation: 3442

You could query /proc/version which should contain the builder string.

shell@android:/ $ cat /proc/version                                            
Linux version 3.0.31-g9f818de ([email protected]) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #1 SMP PREEMPT Wed Nov 28 11:20:29 PST 2012

Upvotes: 2

Fred Foo
Fred Foo

Reputation: 363567

dmesg gives the kernel log, so you should be able to grep/sed it from there:

dmesg | grep 'Linux version ' | sed 's/[^(]*(\([^)]*\)).*/\1/'

(There are smarter ways of doing this.)

Upvotes: 1

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