linux-kernel - Re: [PATCH] ARM: fix O= building with CONFIG_FPE

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Date:   Thu, 11 Jul 2019 12:11:48 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     arm-soc <arm@...nel.org>
Cc:     linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Russell King <linux@...linux.org.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: fix O= building with CONFIG_FPE_FASTFPE

Arnd, Olof,

Please ignore this.

I wanted to put this patch into Russell's patch tracker,
but just sent it to a wrong ML.


Masahiro Yamada

On Thu, Jul 11, 2019 at 12:08 PM Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
>
> To use Fastfpe, a user is supposed to enable CONFIG_FPE_FASTFPE
> and put downstream source files into arch/arm/fastfpe/.
>
> It is not working for O= build because $(wildcard arch/arm/fastfpe)
> checks if it exists in $(objtree), not in $(srctree).
>
> Add the $(srctree)/ prefix to fix it.
>
> While I was here, I slightly refactored the code.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
>
> KernelVersion: 5.2
>
>  arch/arm/Makefile | 9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index f863c6935d0e..792f7fa16a24 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -271,14 +271,9 @@ endif
>
>  export TEXT_OFFSET GZFLAGS MMUEXT
>
> -# Do we have FASTFPE?
> -FASTFPE                :=arch/arm/fastfpe
> -ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
> -FASTFPE_OBJ    :=$(FASTFPE)/
> -endif
> -
>  core-$(CONFIG_FPE_NWFPE)       += arch/arm/nwfpe/
> -core-$(CONFIG_FPE_FASTFPE)     += $(FASTFPE_OBJ)
> +# Put arch/arm/fastfpe/ to use this.
> +core-$(CONFIG_FPE_FASTFPE)     += $(patsubst $(srctree)/%,%,$(wildcard $(srctree)/arch/arm/fastfpe/))
>  core-$(CONFIG_VFP)             += arch/arm/vfp/
>  core-$(CONFIG_XEN)             += arch/arm/xen/
>  core-$(CONFIG_KVM_ARM_HOST)    += arch/arm/kvm/
> --
> 2.17.1
>


-- 
Best Regards
Masahiro Yamada