Re: [PATCH] MIPS: Implement ARCH_HAS_CC_CAN_LINK

[Maciej W. Rozycki]

On Mon, 22 Dec 2025, Thomas Weißschuh wrote:

> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index b88b97139fa8..316e3c29c431 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -3126,6 +3127,20 @@ config CC_HAS_MNO_BRANCH_LIKELY
>  config CC_HAS_BROKEN_INLINE_COMPAT_BRANCH
>  	def_bool y if CC_IS_CLANG
>  
> +config ARCH_CC_CAN_LINK
> +	bool
> +	default $(cc_can_link_user,-m64 -EL) if 64BIT && CPU_LITTLE_ENDIAN
> +	default $(cc_can_link_user,-m64 -EB) if 64BIT && CPU_BIG_ENDIAN
> +	default $(cc_can_link_user,-m32 -EL) if CPU_LITTLE_ENDIAN
> +	default $(cc_can_link_user,-m32 -EB) if CPU_BIG_ENDIAN
> +
> +config ARCH_USERFLAGS
> +	string
> +	default "-m64 -EL" if 64BIT && CPU_LITTLE_ENDIAN
> +	default "-m64 -EB" if 64BIT && CPU_BIG_ENDIAN
> +	default "-m32 -EL" if CPU_LITTLE_ENDIAN
> +	default "-m32 -EB" if CPU_BIG_ENDIAN

 There are no `-m32'/`-m64' options with MIPS GCC; where did you get them 
from and how did you verify your change?  Did you mean `-mabi=...' by any 
chance?  Also does the n32 ABI have to be factored in, since IIUC this 
stuff is about user programs?

  Maciej