[Buildroot] Same 32-bit image for 64-bit and 32-bit platforms

[Buildroot] Same 32-bit image for 64-bit and 32-bit platforms

[Juan A. Rubio]

Hi,

I'm looking for information on whether it's possible to produce and
use the same Buildroot image and associated sdk for two different
boards, one based on an imx6 and the other on imx8. Is this something
that Buildroot supports at all? do I need two separate Buildroot
environments/builds, one for the 32-bit imx6 and another for the
64-bit imx8?

Thanks,
Juan
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Re: [Buildroot] Same 32-bit image for 64-bit and 32-bit platforms

[Thomas Petazzoni]

Hello Juan,

On Mon, 27 Dec 2021 09:40:00 +0100
"Juan A. Rubio" <jarubio2001@gmail.com> wrote:

> I'm looking for information on whether it's possible to produce and
> use the same Buildroot image and associated sdk for two different
> boards, one based on an imx6 and the other on imx8. Is this something
> that Buildroot supports at all? do I need two separate Buildroot
> environments/builds, one for the 32-bit imx6 and another for the
> 64-bit imx8?

You will need different Buildroot builds yes, but you can use a single
Buildroot source tree. Basically, your i.MX6 system will need one
Buildroot configuration (.config file / defconfig file) and your i.MX8
system will need another Buildroot configuration (another .config file
/ defconfig file).

You can build both configurations in parallel based on the same
Buildroot source tree using "out of tree" build, see
https://buildroot.org/downloads/manual/manual.html#_building_out_of_tree.

Hope this helps,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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