Commit b15212824a01 ("LoongArch: Make LTO case independent in Makefile")
moves "KBUILD_LDFLAGS += -mllvm --loongarch-annotate-tablejump" out of
CONFIG_CC_HAS_ANNOTATE_TABLEJUMP, which breaks the build for LLVM-18, as
'--loongarch-annotate-tablejump' is unimplemented there:

ld.lld: error: -mllvm: ld.lld: Unknown command line argument '--loongarch-annotate-tablejump'.

Call ld-option to detect '--loongarch-annotate-tablejump' before use, so
as to fix the build error.

Fixes: b15212824a01 ("LoongArch: Make LTO case independent in Makefile")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Suggested-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---
 arch/loongarch/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index ae419e32f22e..fcfa793f9bb0 100644
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -115,7 +115,7 @@ ifdef CONFIG_LTO_CLANG
 # The annotate-tablejump option can not be passed to LLVM backend when LTO is enabled.
 # Ensure it is aware of linker with LTO, '--loongarch-annotate-tablejump' also needs to
 # be passed via '-mllvm' to ld.lld.
-KBUILD_LDFLAGS			+= -mllvm --loongarch-annotate-tablejump
+KBUILD_LDFLAGS			+= $(call ld-option,-mllvm --loongarch-annotate-tablejump)
 endif
 endif
 
-- 
2.47.3

On Tue, Sep 23, 2025 at 09:01:22PM +0800, Huacai Chen wrote:
> Commit b15212824a01 ("LoongArch: Make LTO case independent in Makefile")
> moves "KBUILD_LDFLAGS += -mllvm --loongarch-annotate-tablejump" out of
> CONFIG_CC_HAS_ANNOTATE_TABLEJUMP, which breaks the build for LLVM-18, as
> '--loongarch-annotate-tablejump' is unimplemented there:
> 
> ld.lld: error: -mllvm: ld.lld: Unknown command line argument '--loongarch-annotate-tablejump'.
> 
> Call ld-option to detect '--loongarch-annotate-tablejump' before use, so
> as to fix the build error.
> 
> Fixes: b15212824a01 ("LoongArch: Make LTO case independent in Makefile")
> Reported-by: Nathan Chancellor <nathan@kernel.org>
> Suggested-by: WANG Rui <wangrui@loongson.cn>
> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build

> ---
>  arch/loongarch/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
> index ae419e32f22e..fcfa793f9bb0 100644
> --- a/arch/loongarch/Makefile
> +++ b/arch/loongarch/Makefile
> @@ -115,7 +115,7 @@ ifdef CONFIG_LTO_CLANG
>  # The annotate-tablejump option can not be passed to LLVM backend when LTO is enabled.
>  # Ensure it is aware of linker with LTO, '--loongarch-annotate-tablejump' also needs to
>  # be passed via '-mllvm' to ld.lld.
> -KBUILD_LDFLAGS			+= -mllvm --loongarch-annotate-tablejump
> +KBUILD_LDFLAGS			+= $(call ld-option,-mllvm --loongarch-annotate-tablejump)
>  endif
>  endif
>  
> -- 
> 2.47.3
>