[Buildroot] "output" directory for multiple targets

[Buildroot] "output" directory for multiple targets

[Justin Mark]

Hi,

If I want to use buildroot for multiple targets (or devices), is there a way to specify each target's own "output" directory (not only the destination root filesystem folder)? so I can keep all the build results for different targets?  

Many thanks,
Justin


      

[Buildroot] "output" directory for multiple targets

[Yann E. MORIN]

Justin, All,

On Tuesday 14 December 2010 22:34:14 Justin Mark wrote:
> If I want to use buildroot for multiple targets (or devices), is there a way
> to specify each target's own "output" directory (not only the destination
> root filesystem folder)? so I can keep all the build results for different
> targets?

You can do out-of-tree builds, one for each of your devices:
  mkdir device-1
  cd device-1
  make -C "/path/to/buildroot" O="$(pwd)" menuconfig
  make

The first time you run 'make -C....', as above, it creates wrapper Makefile
in $(pwd) that allows you to simply call make the following times.

And so on for each of your devices...

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] "output" directory for multiple targets

[Justin Mark]

Hi Yann,

That's exactly what I was looking for, thanks a lot.

Justin

--- On Tue, 12/14/10, Yann E. MORIN <yann.morin.1998@anciens.enib.fr> wrote:

> From: Yann E. MORIN <yann.morin.1998@anciens.enib.fr>
> Subject: Re: [Buildroot] "output" directory for multiple targets
> To: buildroot at busybox.net
> Cc: "Justin Mark" <oilehus@yahoo.com>
> Date: Tuesday, December 14, 2010, 1:40 PM
> Justin, All,
> 
> On Tuesday 14 December 2010 22:34:14 Justin Mark wrote:
> > If I want to use buildroot for multiple targets (or
> devices), is there a way
> > to specify each target's own "output" directory (not
> only the destination
> > root filesystem folder)? so I can keep all the build
> results for different
> > targets?
> 
> You can do out-of-tree builds, one for each of your
> devices:
> ? mkdir device-1
> ? cd device-1
> ? make -C "/path/to/buildroot" O="$(pwd)" menuconfig
> ? make
> 
> The first time you run 'make -C....', as above, it creates
> wrapper Makefile
> in $(pwd) that allows you to simply call make the following
> times.
> 
> And so on for each of your devices...
> 
> Regards,
> Yann E. MORIN.
> 
> -- 
> .-----------------.--------------------.------------------.--------------------.
> |? Yann E. MORIN? | Real-Time Embedded | /"\
> ASCII RIBBON | Erics' conspiracy: |
> | +33 662 376 056 | Software? Designer | \ /
> CAMPAIGN? ???|? ___? ?
> ? ? ? ? ???|
> | +33 223 225 172 `------------.-------:? X?
> AGAINST? ? ? |? \e/? There is
> no? |
> | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML
> MAIL? ?
> |???v???conspiracy.? |
> '------------------------------^-------^------------------^--------------------'
> 


      

[Buildroot] "output" directory for multiple targets

[Thomas Petazzoni]

On Tue, 14 Dec 2010 22:40:20 +0100
"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> wrote:

> You can do out-of-tree builds, one for each of your devices:
>   mkdir device-1
>   cd device-1
>   make -C "/path/to/buildroot" O="$(pwd)" menuconfig
>   make
> 
> The first time you run 'make -C....', as above, it creates wrapper
> Makefile in $(pwd) that allows you to simply call make the following
> times.

Or, using the exact same feature, but differently, what I do is :

	cd buildroot/
	mkdir ../outputs/device1
	make O=../outputs/device1 menuconfig
	make O=../outputs/device1
	mkdir ../outputs/device2
	make O=../outputs/device2 menuconfig
	make O=../outputs/device2

and so on.

This O= feature is documented in our documentation,
http://buildroot.org/downloads/buildroot.html#using.

Regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com