linux-kernel - Re: [PATCH] powerpc/boot: Fix build with gcc 15

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Message-ID: <Z86liwlwP5WvrEkw@kitsune.suse.cz>
Date: Mon, 10 Mar 2025 09:40:43 +0100
From: Michal Suchánek <msuchanek@...e.de>
To: linuxppc-dev@...ts.ozlabs.org
Cc: Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>,
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/boot: Fix build with gcc 15

On Fri, Mar 07, 2025 at 10:20:52AM +0100, Michal Suchanek wrote:
> Similar to x86 the ppc boot code does not build with GCC 15.
> 
> Copy the fix from
> commit ee2ab467bddf ("x86/boot: Use '-std=gnu11' to fix build with GCC 15")
> 
> Signed-off-by: Michal Suchanek <msuchanek@...e.de>
> ---
>  arch/powerpc/boot/Makefile | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
> index 1ff6ad4f6cd2..e6b35699c049 100644
> --- a/arch/powerpc/boot/Makefile
> +++ b/arch/powerpc/boot/Makefile
> @@ -33,6 +33,7 @@ else
>  endif
>  
>  ifdef CONFIG_PPC64_BOOT_WRAPPER
> +BOOTTARGETFLAGS	+= -std=gnu11

I suppose this should be above the ifdef, not below. I build only 64S
but I expect any other platforms that build boot code will be equally
affected.

Thanks

Michal

>  BOOTTARGETFLAGS	+= -m64
>  BOOTTARGETFLAGS	+= -mabi=elfv2
>  ifdef CONFIG_PPC64_ELF_ABI_V2
> -- 
> 2.47.1
>