linux-kernel - Re: [PATCH] sh: select KBUILD

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Date:   Tue, 14 Nov 2017 00:26:52 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sh: select KBUILD_DEFCONFIG depending on ARCH

2017-11-03 2:40 GMT+09:00 Masahiro Yamada <yamada.masahiro@...ionext.com>:
> You can not select KBUILD_DEFCONFIG depending on any CONFIG option
> because include/config/auto.conf is not included when building config
> targets.  So, CONFIG_SUPERH32 is never set during the configuration,
> and cayman_defconfig is chosen.
>
> This commit provides a sensible way to choose shx3/cayman_defconfig.
>
> arch/sh/Kconfig sets either SUPERH32 or SUPERH64 depending on ARCH
> environment, like follows:
>
>   config SUPERH32
>           def_bool ARCH = "sh"
>
>           ...
>
>   config SUPERH64
>           def_bool ARCH = "sh64"
>
> It should make sense to choose the default defconfig by ARCH,
> like arch/sparc/Makefile.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>


Applied to linux-kbuild/kbuild.


> ---
>
>  arch/sh/Makefile | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/arch/sh/Makefile b/arch/sh/Makefile
> index 280bbff..65300193 100644
> --- a/arch/sh/Makefile
> +++ b/arch/sh/Makefile
> @@ -15,6 +15,12 @@ ifneq ($(SUBARCH),$(ARCH))
>    endif
>  endif
>
> +ifeq ($(ARCH),sh)
> +KBUILD_DEFCONFIG       := shx3_defconfig
> +else
> +KBUILD_DEFCONFIG       := cayman_defconfig
> +endif
> +
>  isa-y                                  := any
>  isa-$(CONFIG_SH_DSP)                   := sh
>  isa-$(CONFIG_CPU_SH2)                  := sh2
> @@ -105,14 +111,12 @@ ifdef CONFIG_SUPERH32
>  UTS_MACHINE            := sh
>  BITS                   := 32
>  LDFLAGS_vmlinux                += -e _stext
> -KBUILD_DEFCONFIG       := shx3_defconfig
>  else
>  UTS_MACHINE            := sh64
>  BITS                   := 64
>  LDFLAGS_vmlinux                += --defsym phys_stext=_stext-$(CONFIG_PAGE_OFFSET) \
>                            --defsym phys_stext_shmedia=phys_stext+1 \
>                            -e phys_stext_shmedia
> -KBUILD_DEFCONFIG       := cayman_defconfig
>  endif
>
>  ifdef CONFIG_CPU_LITTLE_ENDIAN
> --
> 2.7.4
>
> --
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-- 
Best Regards
Masahiro Yamada