linux-kernel - Re: [PATCH 4/4] m68k: pass -D options to KBUILD_CPPFLAGS instead of KBUILD

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Date:   Wed, 27 May 2020 23:00:20 +1000
From:   Greg Ungerer <gerg@...ux-m68k.org>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-m68k@...ts.linux-m68k.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] m68k: pass -D options to KBUILD_CPPFLAGS instead of
 KBUILD_{A,C}FLAGS


On 26/5/20 10:38 pm, Masahiro Yamada wrote:
> Precisely, -D is a preprocessor option.
> 
> KBUILD_CPPFLAGS is passed to for compiling .c and .S files too.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>

Acked-by: Greg Ungerer <gerg@...ux-m68k.org>

Regards
Greg


> ---
> 
>   arch/m68k/Makefile | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
> index ae6e29da3a3e..c28f9f917ac0 100644
> --- a/arch/m68k/Makefile
> +++ b/arch/m68k/Makefile
> @@ -70,9 +70,8 @@ ifdef CONFIG_MMU
>   KBUILD_CFLAGS += -fno-strength-reduce -ffixed-a2
>   else
>   # we can use a m68k-linux-gcc toolchain with these in place
> -KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\"
> -KBUILD_CFLAGS += -D__uClinux__
> -KBUILD_AFLAGS += -D__uClinux__
> +KBUILD_CPPFLAGS += -DUTS_SYSNAME=\"uClinux\"
> +KBUILD_CPPFLAGS += -D__uClinux__
>   endif
>   
>   KBUILD_LDFLAGS := -m m68kelf
>