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From: Nick Desaulniers <ndesaulniers@google.com>
To: Nathan Chancellor <nathan@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	clang-built-linux <clang-built-linux@googlegroups.com>
Subject: Re: [PATCH 1/2] Makefile: Remove '--gcc-toolchain' flag
Date: Tue, 2 Mar 2021 14:33:38 -0800	[thread overview]
Message-ID: <CAKwvOdn42+2bFOMvJpJUuvmM1cj3V6uNEJWfwBWCRFMXtvQfcA@mail.gmail.com> (raw)
In-Reply-To: <20210302210646.3044738-1-nathan@kernel.org>

On Tue, Mar 2, 2021 at 1:07 PM Nathan Chancellor <nathan@kernel.org> wrote:
>
> This is not necessary anymore now that we specify '--prefix=', which
> tells clang exactly where to find the GNU cross tools. This has been
> verified with self compiled LLVM 10.0.1 and LLVM 13.0.0 as well as a
> distribution version of LLVM 11.1.0 without binutils in the LLVM
> toolchain locations.
>
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Thanks for the patch!
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>

I see this pattern still being used in
arch/arm64/kernel/vdso32/Makefile, but that can be separate cleanups.

> ---
>  Makefile | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index f9b54da2fca0..c20f0ad8be73 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -568,10 +568,6 @@ ifneq ($(CROSS_COMPILE),)
>  CLANG_FLAGS    += --target=$(notdir $(CROSS_COMPILE:%-=%))
>  GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
>  CLANG_FLAGS    += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
> -GCC_TOOLCHAIN  := $(realpath $(GCC_TOOLCHAIN_DIR)/..)
> -endif
> -ifneq ($(GCC_TOOLCHAIN),)
> -CLANG_FLAGS    += --gcc-toolchain=$(GCC_TOOLCHAIN)
>  endif
>  ifneq ($(LLVM_IAS),1)
>  CLANG_FLAGS    += -no-integrated-as
>
> base-commit: 7a7fd0de4a9804299793e564a555a49c1fc924cb
> --
> 2.31.0.rc0.75.gec125d1bc1
>


-- 
Thanks,
~Nick Desaulniers

  parent reply	other threads:[~2021-03-02 23:35 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-02 21:06 Nathan Chancellor
2021-03-02 21:06 ` [PATCH 2/2] Makefile: Only specify '--prefix=' when building with clang + GNU as Nathan Chancellor
2021-03-02 22:02   ` Fangrui Song
2021-03-02 22:09     ` Nick Desaulniers
2021-03-02 22:40       ` Nick Desaulniers
2021-03-09 19:55   ` Masahiro Yamada
2021-03-09 19:58     ` Masahiro Yamada
2021-09-29 17:26   ` kernel test robot
2021-09-29 19:32   ` kernel test robot
2021-03-02 21:43 ` [PATCH 1/2] Makefile: Remove '--gcc-toolchain' flag Fangrui Song
2021-03-03  8:33   ` Masahiro Yamada
2021-03-02 22:33 ` Nick Desaulniers [this message]
2021-03-03  3:25 ` Sedat Dilek
2021-03-03 14:22   ` Sedat Dilek
2021-03-09 20:59 ` [PATCH v2 " Nathan Chancellor
2021-03-09 20:59   ` [PATCH v2 2/2] Makefile: Only specify '--prefix=' when building with clang + GNU as Nathan Chancellor
2021-03-09 21:15   ` [PATCH v2 1/2] Makefile: Remove '--gcc-toolchain' flag Fangrui Song
2021-03-15 16:21   ` Masahiro Yamada
2021-03-15 16:41     ` Sedat Dilek
2021-03-16 15:36       ` Masahiro Yamada
2021-03-03 23:07 [PATCH " Fangrui Song
2021-03-04 19:11 ` Fāng-ruì Sòng
2021-03-08 13:59 ` Masahiro Yamada

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