diff mbox series

powerpc: Fix fatal warnings flag for LLVM's integrated assembler

Message ID 20240405-ppc-fix-wa-fatal-warnings-clang-v1-1-bdcd969f2ef0@kernel.org (mailing list archive)
State Accepted
Commit 8884fc918f6aee220f9b41806974508bd0213aca
Headers show
Series powerpc: Fix fatal warnings flag for LLVM's integrated assembler | expand

Commit Message

Nathan Chancellor April 5, 2024, 7:31 p.m. UTC
When building with LLVM_IAS=1, there is an error because
'-fatal-warnings' is not recognized as a valid flag:

  clang: error: unsupported argument '-fatal-warnings' to option '-Wa,'

Use the double hyphen version of the flag, '--fatal-warnings', which
works with both the GNU assembler and LLVM's integrated assembler.

Fixes: 608d4a5ca563 ("powerpc: Error on assembly warnings")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
 arch/powerpc/Kbuild | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)


---
base-commit: bfe51886ca544956eb4ff924d1937ac01d0ca9c8
change-id: 20240405-ppc-fix-wa-fatal-warnings-clang-603f0ebb0133

Best regards,

Comments

Justin Stitt April 5, 2024, 7:57 p.m. UTC | #1
On Fri, Apr 5, 2024 at 12:31 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> When building with LLVM_IAS=1, there is an error because
> '-fatal-warnings' is not recognized as a valid flag:
>
>   clang: error: unsupported argument '-fatal-warnings' to option '-Wa,'
>
> Use the double hyphen version of the flag, '--fatal-warnings', which
> works with both the GNU assembler and LLVM's integrated assembler.
>
> Fixes: 608d4a5ca563 ("powerpc: Error on assembly warnings")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Nice catch.

Reviewed-by: Justin Stitt <justinstitt@google.com>

> ---
>  arch/powerpc/Kbuild | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild
> index da862e9558bc..571f260b0842 100644
> --- a/arch/powerpc/Kbuild
> +++ b/arch/powerpc/Kbuild
> @@ -1,6 +1,6 @@
>  # SPDX-License-Identifier: GPL-2.0
> -subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -Wa,-fatal-warnings
> -subdir-asflags-$(CONFIG_PPC_WERROR) := -Wa,-fatal-warnings
> +subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -Wa,--fatal-warnings
> +subdir-asflags-$(CONFIG_PPC_WERROR) := -Wa,--fatal-warnings
>
>  obj-y += kernel/
>  obj-y += mm/
>
> ---
> base-commit: bfe51886ca544956eb4ff924d1937ac01d0ca9c8
> change-id: 20240405-ppc-fix-wa-fatal-warnings-clang-603f0ebb0133
>
> Best regards,
> --
> Nathan Chancellor <nathan@kernel.org>
>
Michael Ellerman April 9, 2024, 8:57 a.m. UTC | #2
Nathan Chancellor <nathan@kernel.org> writes:
> When building with LLVM_IAS=1, there is an error because
> '-fatal-warnings' is not recognized as a valid flag:
>
>   clang: error: unsupported argument '-fatal-warnings' to option '-Wa,'
>
> Use the double hyphen version of the flag, '--fatal-warnings', which
> works with both the GNU assembler and LLVM's integrated assembler.
>
> Fixes: 608d4a5ca563 ("powerpc: Error on assembly warnings")

Thanks.

I guess I need to do some of my clang builds with LLVM_IAS=1 :}

cheers
Michael Ellerman April 22, 2024, 8:16 a.m. UTC | #3
On Fri, 05 Apr 2024 12:31:22 -0700, Nathan Chancellor wrote:
> When building with LLVM_IAS=1, there is an error because
> '-fatal-warnings' is not recognized as a valid flag:
> 
>   clang: error: unsupported argument '-fatal-warnings' to option '-Wa,'
> 
> Use the double hyphen version of the flag, '--fatal-warnings', which
> works with both the GNU assembler and LLVM's integrated assembler.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc: Fix fatal warnings flag for LLVM's integrated assembler
      https://git.kernel.org/powerpc/c/8884fc918f6aee220f9b41806974508bd0213aca

cheers
diff mbox series

Patch

diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild
index da862e9558bc..571f260b0842 100644
--- a/arch/powerpc/Kbuild
+++ b/arch/powerpc/Kbuild
@@ -1,6 +1,6 @@ 
 # SPDX-License-Identifier: GPL-2.0
-subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -Wa,-fatal-warnings
-subdir-asflags-$(CONFIG_PPC_WERROR) := -Wa,-fatal-warnings
+subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -Wa,--fatal-warnings
+subdir-asflags-$(CONFIG_PPC_WERROR) := -Wa,--fatal-warnings
 
 obj-y += kernel/
 obj-y += mm/