linux-kernel - Re: [PATCH] h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-

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Date:   Thu, 14 Mar 2019 02:28:21 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        "moderated list:H8/300 ARCHITECTURE" 
        <uclinux-h8-devel@...ts.sourceforge.jp>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-

On Fri, Feb 15, 2019 at 11:53 PM Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
>
> It believe it is a bad idea to hardcode a specific compiler prefix
> that may or may not be installed on a user's system. It is annoying
> when testing features that should not require compilers at all.
>
> For example, mrproper, headers_install, etc. should work without
> any compiler.
>
> They look like follows on my machine.
>
> $ make ARCH=h8300 mrproper
> ./scripts/gcc-version.sh: line 26: h8300-unknown-linux-gcc: command not found
> ./scripts/gcc-version.sh: line 27: h8300-unknown-linux-gcc: command not found
> make: h8300-unknown-linux-gcc: Command not found
> make: h8300-unknown-linux-gcc: Command not found
>   [ a bunch of the same error messages continue ]
>
> $ make ARCH=h8300 headers_install
> ./scripts/gcc-version.sh: line 26: h8300-unknown-linux-gcc: command not found
> ./scripts/gcc-version.sh: line 27: h8300-unknown-linux-gcc: command not found
> make: h8300-unknown-linux-gcc: Command not found
>   HOSTCC  scripts/basic/fixdep
> make: h8300-unknown-linux-gcc: Command not found
>   WRAP    arch/h8300/include/generated/uapi/asm/kvm_para.h
>   [ snip ]
>
> The solution is to delete this line, or to use cc-cross-prefix like
> some architectures do. I chose the latter as a moderate fixup.
>
> I added an alternative 'h8300-linux-' because it is available at:
>
> https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---

This is more related to build system.
So, I applied to linux-kbuild now.





>  arch/h8300/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile
> index f801f37..ba0f26c 100644
> --- a/arch/h8300/Makefile
> +++ b/arch/h8300/Makefile
> @@ -27,7 +27,7 @@ KBUILD_LDFLAGS += $(ldflags-y)
>  CHECKFLAGS += -msize-long
>
>  ifeq ($(CROSS_COMPILE),)
> -CROSS_COMPILE := h8300-unknown-linux-
> +CROSS_COMPILE := $(call cc-cross-prefix, h8300-unknown-linux- h8300-linux-)
>  endif
>
>  core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/
> --
> 2.7.4
>


-- 
Best Regards
Masahiro Yamada