[PATCH v2 02/10] init: deduplicate cc-can-link.sh invocations

[Nathan Chancellor]

On Tue, Oct 14, 2025 at 03:05:17PM +0200, Thomas Weißschuh wrote:
> The command to invoke scripts/cc-can-link.sh is very long and new usages
> are about to be added.
> 
> Add a helper variable to make the code easier to read and maintain.
> 
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh at linutronix.de>

Reviewed-by: Nathan Chancellor <nathan at kernel.org>

> ---
>  init/Kconfig            | 4 ++--
>  scripts/Kconfig.include | 3 +++
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/init/Kconfig b/init/Kconfig
> index cab3ad28ca49e7ac930207c9cde8d431d55dc7af..7b722e714d5c5a0580467914b226dc0700ec0797 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -84,8 +84,8 @@ config RUSTC_LLVM_VERSION
>  
>  config CC_CAN_LINK
>  	bool
> -	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAGS) $(m64-flag)) if 64BIT
> -	default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAGS) $(m32-flag))
> +	default $(cc_can_link_user,$(m64-flag)) if 64BIT
> +	default $(cc_can_link_user,$(m32-flag))
>  
>  # Fixed in GCC 14, 13.3, 12.4 and 11.5
>  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921
> diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
> index 33193ca6e8030e659d6b321acaea1acd42c387a4..d42042b6c9e243b46d1626d892c0c986621ce462 100644
> --- a/scripts/Kconfig.include
> +++ b/scripts/Kconfig.include
> @@ -65,6 +65,9 @@ cc-option-bit = $(if-success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null,$
>  m32-flag := $(cc-option-bit,-m32)
>  m64-flag := $(cc-option-bit,-m64)
>  
> +# Test whether the compiler can link userspace applications
> +cc_can_link_user = $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAGS) $(1))
> +
>  rustc-version := $(shell,$(srctree)/scripts/rustc-version.sh $(RUSTC))
>  rustc-llvm-version := $(shell,$(srctree)/scripts/rustc-llvm-version.sh $(RUSTC))
>  
> 
> -- 
> 2.51.0
>