Re: linux-next: build warning after merge of the arm64 tree
From: AKASHI Takahiro
Date: Mon Jul 23 2018 - 20:25:07 EST
On Tue, Jul 24, 2018 at 09:05:45AM +1000, Stephen Rothwell wrote:
> Hi all,
>
> After merging the arm64 tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
Where can I find this specific branch?
> drivers/acpi/Kconfig:6:error: recursive dependency detected!
> drivers/acpi/Kconfig:6: symbol ACPI depends on EFI
My patch created an additional dependency like:
menu ACPI
...
depends on IA64 || X86 || (ARM64 && EFI)
> arch/x86/Kconfig:1920: symbol EFI depends on ACPI
So I don't understand why this change makes a warning on x86_64 build.
Is this a real recursive dependency?
Thanks,
-Takahiro AKASHI
> For a resolution refer to Documentation/kbuild/kconfig-language.txt
> subsection "Kconfig recursive dependency limitations"
>
> Introduced by commit
>
> 5bcd44083a08 ("drivers: acpi: add dependency of EFI for arm64")
>
> --
> Cheers,
> Stephen Rothwell