Re: [PATCH kvmtool 2/4] Makefile: Fix ARCH override

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Hi,

Thank you for fixing this, I've come across it several times in the past.

On Fri, Jul 22, 2022 at 03:17:30PM +0100, Jean-Philippe Brucker wrote:
> Variables set on the command-line are not overridden by normal
> assignments. So when passing ARCH=x86_64 on the command-line, build
> fails:
> 
> Makefile:227: *** This architecture (x86_64) is not supported in kvmtool.
> 
> Use the 'override' directive to force the ARCH reassignment.
> 
> Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
> ---
>  Makefile | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index f0df76f4..faae0da2 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -115,11 +115,11 @@ ARCH ?= $(shell uname -m | sed -e s/i.86/i386/ -e s/ppc.*/powerpc/ \
>  	  -e s/riscv64/riscv/ -e s/riscv32/riscv/)
>  
>  ifeq ($(ARCH),i386)

As far as I know, there are several versions of the x86 architecture: i386,
i486, i586 and i686.

It looks rather arbitrary to have i386 as a valid ARCH value, but not the other
ix86 versions. I wonder if we should just drop it and keep only x86 and x86_64,
like the kernel.

Regardless, the patch looks good to me:

Tested-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>
Reviewed-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>

Thanks,
Alex

> -	ARCH         := x86
> +	override ARCH = x86
>  	DEFINES      += -DCONFIG_X86_32
>  endif
>  ifeq ($(ARCH),x86_64)
> -	ARCH         := x86
> +	override ARCH = x86
>  	DEFINES      += -DCONFIG_X86_64
>  	ARCH_PRE_INIT = x86/init.S
>  endif
> -- 
> 2.37.1
> 



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