[Buildroot] [PATCH] bootlader/grub2: disable x86-64-efi choice on !BR2_ARCH_IS_64

[Yann E. MORIN]

Samuel, All,

On 2015-01-16 18:58 +0100, Samuel Martin spake thusly:
> When x86-64-efi platform is selected, grub2 automatically adds -m64 to the
> CFLAGS. This makes the configure script failed when the toolchain does not
> have multilib support (like the Buildroot ones).
> 
> Reported-by: Noe Rubinstein <nrubinstein at aldebaran-robotics.com>
> Signed-off-by: Samuel Martin <s.martin49 at gmail.com>

I fail to see a case where we would want to build a 64-bit EFI GRUB to
later start a 32-bit kernel and userland.

Since we do not support multilib, the user would have to have two
builds: one for the 32-bit kernel+userland, one for the 64-bit
bootloader (if that is even possible to boot a 32-bit kernel from a
64-bit EFI GRUB).

Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>

Regards,
Yann E. MORIN.

> ---
>  boot/grub2/Config.in | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/boot/grub2/Config.in b/boot/grub2/Config.in
> index 626344a..c465a4d 100644
> --- a/boot/grub2/Config.in
> +++ b/boot/grub2/Config.in
> @@ -132,6 +132,7 @@ config BR2_TARGET_GRUB2_I386_EFI
>  
>  config BR2_TARGET_GRUB2_X86_64_EFI
>  	bool "x86-64-efi"
> +	depends on BR2_ARCH_IS_64
>  	help
>  	  Select this option if the platform you're targetting has a
>  	  64 bits EFI BIOS.
> -- 
> 2.1.0
> 
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> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

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