[OpenWrt-Devel] [PATCH] kernel: add option to root .config for /proc/config.gz

[Hauke Mehrtens]

On 11/5/18 12:17 AM, Daniel Santos wrote:
> Exports CONFIG_IKCONFIG and CONFIG_IKCONFIG_PROC to the kernel .config
> based upon menu choices under Global build settings --> Kernel build
> options.  For simplicity, /proc/config.gz support is assumed, but if
> kernel_menuconfig has disabled CONFIG_PROC_FS it will be pruned in
> oldconfig.
> 
> Signed-off-by: Daniel Santos <daniel.santos at pobox.com>
> ---
>  config/Config-kernel.in | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/config/Config-kernel.in b/config/Config-kernel.in
> index f38cc792dd..b03eb929c9 100644
> --- a/config/Config-kernel.in
> +++ b/config/Config-kernel.in
> @@ -20,6 +20,24 @@ config KERNEL_BUILD_DOMAIN
>  	  returned by 'uname -a' on running systems.
>  	  If not set, uses system hostname at build time.
>  
> +config KERNEL_IKCONFIG_PROC
> +        bool
> +        default n

"default n" is not needed this is already the default setting.

> +
> +config KERNEL_IKCONFIG
> +	bool "Kernel .config support"
> +	select KERNEL_IKCONFIG_PROC
> +	default n
> +	help
> +	  This option enables the complete Linux kernel ".config" file
> +	  contents to be saved in the kernel. It provides documentation
> +	  of which kernel options are used in a running kernel or in an
> +	  on-disk kernel.  This information can be extracted from the kernel
> +	  image file with the script scripts/extract-ikconfig and used as
> +	  input to rebuild the current kernel or to build another kernel.
> +	  Unless PROC_FS is disabled, it will also be exported via
> +	  /proc/config.gz.
> +
>  config KERNEL_PRINTK
>  	bool "Enable support for printk"
>  	default y
> 


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