[Buildroot] grub on target

[Arnout Vandecappelle]

On 21/04/15 08:30, Mike Musterd wrote:
> Hello list,
> 
>  
> 
> I am developing a small OS that functions as a sort of bootloader for windows.
> Its primary function is to check whether windows is available and if so, reboot
> to windows once (then, after that, boot into the bootloader again).
> 
> If not it will repartition disk, install itself on new partition, and format
> drives and clone windows (from a network source) all from within this bootloader.
> 
>  
> 
> I am using grub for that, with some custom fixes to the grub-reboot script to
> make it behave as required.
> 
>  
> 
> However to my dismay I found that the grub package does not actually build grub
> for the target.
> 
>  
> 
> grub.mk claims as much:
> 
> # We're cheating here as we're installing the grub binary not in the
> 
> # target directory (where it is useless), but in the host
> 
> # directory. This grub binary can be used to install grub into the MBR
> 
> # of a disk or disk image.
> 
>  
> 
> In my use case I need grub in the target directory, and it’s not useless at all.
> So I modified the grub.mk to actually make grub for the target, and it all works.

 Well, in fact grub2 _is_ made for the target, but it is installed in the host
directory instead of in the target. So indeed, the same files can just be copied
to the target and they will work there.


> Now my question is: is my usecase generic enough to warrant a patch submission,
> or is the ‘useless’ part always true except in my case?

 I agree that it is useful enough. Add a config option
BR2_TARGET_GRUB2_INSTALL_TOOLS (with appropriate help text) to conditionally
install them.

 Thanks!

 Regards,
 Arnout


> 
>  
> 
> Kind regards,
> 
>  
> 
> Mike
> 
>  
> 
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-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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