[Buildroot] Individual package configs

[Buildroot] Individual package configs

[José Mendes]

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Hi all,

I've noticed that the configs produced by individual package commands don't
ever get written to the .config.

Is there a way to produce a defconfig with the individual package changes?

I specifically need:
- U-Boot
- swupdate
- linux

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Re: [Buildroot] Individual package configs

[Thomas Petazzoni via buildroot]

Hello,

On Thu, 25 Jul 2024 17:26:51 +0200
José Mendes <jp.baltazar.mendes@gmail.com> wrote:

> I've noticed that the configs produced by individual package commands don't
> ever get written to the .config.
> 
> Is there a way to produce a defconfig with the individual package changes?
> 
> I specifically need:
> - U-Boot
> - swupdate
> - linux

make linux-savedefconfig will take the .config in
output/build/linux-<version>/ and turn it into
output/build/linux-<version>/defconfig

make linux-update-config will take the .config in
output/build/linux-<version>/ and copy it to the location defined by
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE.

make linux-update-defconfig will take the .config in
output/build/linux-<version>/, turn it into a defconfig and copy this
defconfig to the location defined by
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE.

These make targets exist for all packages that use kconfig.
See https://buildroot.org/downloads/manual/manual.html#customize-store-package-config
also, as well
as https://bootlin.com/doc/training/buildroot/buildroot-slides.pdf
starting from slide 75.

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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