[Buildroot] Buildroot kconfig option

[Buildroot] Buildroot kconfig option

[Dinesh Guleria]

Hi,

I am downloading kernel directly using buildroot. Then select "
Using an in-tree defconfig file" then
type the name of the defconfig.

Here i am using a already existing defconfig file in kernel source tree.

Now it could be the case existing configuration in Linux kernel source may
not be as per my requirement.

My question is, can i perform kconfig operation on the kernel source
downloaded by buildroot , so that i can tune kernel as per my requirement ?

Buildroot manual says :--
"use make linux-menuconfig to open the Linux configuration editor"
http://buildroot.uclibc.org/downloads/manual/manual.html#configure

Or i download kernel source separately & configure it separately & tell
buildroot to use it ?

How you use to deal with this situation related to kernel kconfig ?

Regards,
Katoch
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[Buildroot] Buildroot kconfig option

[Baruch Siach]

Hi Katoch,

On Sun, Sep 06, 2015 at 02:33:15PM +0530, Dinesh Guleria wrote:
> I am downloading kernel directly using buildroot. Then select "
> Using an in-tree defconfig file" then
> type the name of the defconfig.
> 
> Here i am using a already existing defconfig file in kernel source tree.
> 
> Now it could be the case existing configuration in Linux kernel source may
> not be as per my requirement.
> 
> My question is, can i perform kconfig operation on the kernel source
> downloaded by buildroot , so that i can tune kernel as per my requirement ?
> 
> Buildroot manual says :--
> "use make linux-menuconfig to open the Linux configuration editor"
> http://buildroot.uclibc.org/downloads/manual/manual.html#configure
> 
> Or i download kernel source separately & configure it separately & tell
> buildroot to use it ?
> 
> How you use to deal with this situation related to kernel kconfig ?

Please see "Linux kernel" in chapter 7 of the manual: 
http://nightly.buildroot.org/manual.html#_configuration_of_other_components.

For information on storing your modified kernel configuration see section 9.4: 
http://nightly.buildroot.org/manual.html#customize-store-package-config.

Hope this helps,
baruch

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -

[Buildroot] Buildroot kconfig option

[Dinesh Guleria]

Hello Baruch,

One more thing ,

BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG

This is environmental variable ?

If yes then , Do i have to export so many variables manually or buildroot
support some file where i can mention these variables ?

Regards,
Katoch
On 6 Sep 2015 14:40, "Baruch Siach" <baruch@tkos.co.il> wrote:

> Hi Katoch,
>
> On Sun, Sep 06, 2015 at 02:33:15PM +0530, Dinesh Guleria wrote:
> > I am downloading kernel directly using buildroot. Then select "
> > Using an in-tree defconfig file" then
> > type the name of the defconfig.
> >
> > Here i am using a already existing defconfig file in kernel source tree.
> >
> > Now it could be the case existing configuration in Linux kernel source
> may
> > not be as per my requirement.
> >
> > My question is, can i perform kconfig operation on the kernel source
> > downloaded by buildroot , so that i can tune kernel as per my
> requirement ?
> >
> > Buildroot manual says :--
> > "use make linux-menuconfig to open the Linux configuration editor"
> > http://buildroot.uclibc.org/downloads/manual/manual.html#configure
> >
> > Or i download kernel source separately & configure it separately & tell
> > buildroot to use it ?
> >
> > How you use to deal with this situation related to kernel kconfig ?
>
> Please see "Linux kernel" in chapter 7 of the manual:
> http://nightly.buildroot.org/manual.html#_configuration_of_other_components
> .
>
> For information on storing your modified kernel configuration see section
> 9.4:
> http://nightly.buildroot.org/manual.html#customize-store-package-config.
>
> Hope this helps,
> baruch
>
> --
>      http://baruch.siach.name/blog/                  ~. .~   Tk Open
> Systems
> =}------------------------------------------------ooO--U--Ooo------------{=
>    - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
>
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[Buildroot] Buildroot kconfig option

[Thomas Petazzoni]

Dear Dinesh Guleria,

On Sun, 6 Sep 2015 17:07:42 +0530, Dinesh Guleria wrote:

> One more thing ,
> 
> BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG
> 
> This is environmental variable ?
> 
> If yes then , Do i have to export so many variables manually or buildroot
> support some file where i can mention these variables ?

All BR2_* variables are kconfig options, they are defined by running
"make menuconfig".

Best regards,

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

[Buildroot] Buildroot kconfig option

[Dinesh Guleria]

Thanks.
On 6 Sep 2015 17:19, "Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>
wrote:

> Dear Dinesh Guleria,
>
> On Sun, 6 Sep 2015 17:07:42 +0530, Dinesh Guleria wrote:
>
> > One more thing ,
> >
> > BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG
> >
> > This is environmental variable ?
> >
> > If yes then , Do i have to export so many variables manually or buildroot
> > support some file where i can mention these variables ?
>
> All BR2_* variables are kconfig options, they are defined by running
> "make menuconfig".
>
> Best regards,
>
> Thomas
> --
> Thomas Petazzoni, CTO, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com
>
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