[PATCH] powerpc/boot: Fix build with gcc 15

[Mukesh Kumar Chaurasiya]

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 at suse.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
>  BOOTTARGETFLAGS	+= -m64
>  BOOTTARGETFLAGS	+= -mabi=elfv2
>  ifdef CONFIG_PPC64_ELF_ABI_V2
> -- 
> 2.47.1
> 
There's another patch which fixes this problem by version comparison.
https://lore.kernel.org/all/20250323163607.537270-2-misanjum@linux.ibm.com/

In my opinion this is a better solution as it will use the features of latest
compiler.