[Buildroot] Remove all kernel modules from a buildroot build

[Buildroot] Remove all kernel modules from a buildroot build

[Mythbu2]

Hello,

I've successfully build a custom Linux system with buildroot (stable 
release 2016.05) for the Raspberry Pi. Everything works fine so far and 
buildroot is a really nice tool.

I've one question for which I don't find an answer in the docs or on the 
web: the directory /lib/modules/4.4.8 contains all kernel modules and 
consumes around 93% of the entiere root filesystem. My system does not 
need any kernel modules and modules like dvb-* are included which I'll 
certainly not used.

Is there a way of configuring buildroot to omit all this modules and 
save the space and therefore reduce the image size?

Regards,
mythbu

[Buildroot] Remove all kernel modules from a buildroot build

[Thomas Petazzoni]

Hello,

On Fri, 2 Sep 2016 08:48:55 +0200, Mythbu2 wrote:

> Is there a way of configuring buildroot to omit all this modules and 
> save the space and therefore reduce the image size?

Yes: customize your kernel configuration and remove all the kernel
modules that you don't need.

For the Raspberry Pi, we're using the "bcmrpi" defconfig that comes
from the Linux kernel tree hosted on Github at
https://github.com/raspberrypi/linux.git. If this configuration doesn't
suit you, you simply have to customize it.

See
https://buildroot.org/downloads/manual/manual.html#_configuration_of_other_components
for some details.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com