linux-kernel - Re: [PATCH 1/3] kbuild: remove unnecessary "obj- := dummy.o" trick

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Message-ID: <20140909174337.19023.97772@quantum>
Date:	Tue, 09 Sep 2014 10:43:37 -0700
From:	Mike Turquette <mturquette@...aro.org>
To:	Masahiro Yamada <yamada.m@...panasonic.com>,
	linux-kbuild@...r.kernel.org
Cc:	"Masahiro Yamada" <yamada.m@...panasonic.com>,
	"Ben Dooks" <ben-linux@...ff.org>,
	"Kukjin Kim" <kgene.kim@...sung.com>,
	"Russell King" <linux@....linux.org.uk>,
	"Laurent Pinchart" <laurent.pinchart+renesas@...asonboard.com>,
	"Simon Horman" <horms+renesas@...ge.net.au>,
	"Geert Uytterhoeven" <geert@...ux-m68k.org>,
	"Wolfram Sang" <wsa@...g-engineering.com>,
	"Takashi Yoshii" <takasi-y@....dti.ne.jp>,
	"Ulrich Hecht" <ulrich.hecht@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 1/3] kbuild: remove unnecessary "obj- := dummy.o" trick

Quoting Masahiro Yamada (2014-09-09 03:26:19)
> In these Makefiles, at least one of "obj-y" and "obj-" is non-empty,
> hence built-in.o is always created without such a trick.
> 
> Signed-off-by: Masahiro Yamada <yamada.m@...panasonic.com>

Acked-by: Mike Turquette <mturquette@...aro.org>

> ---
> 
>  arch/arm/plat-samsung/Makefile | 1 -
>  drivers/clk/shmobile/Makefile  | 2 --
>  drivers/net/wimax/Makefile     | 4 ----
>  3 files changed, 7 deletions(-)
> 
> diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile
> index 5fe1750..a402262 100644
> --- a/arch/arm/plat-samsung/Makefile
> +++ b/arch/arm/plat-samsung/Makefile
> @@ -8,7 +8,6 @@ ccflags-$(CONFIG_ARCH_MULTI_V7) += -I$(srctree)/$(src)/include
>  
>  obj-y                          :=
>  obj-m                          :=
> -obj-n                          := dummy.o
>  obj-                           :=
>  
>  # Objects we always build independent of SoC choice
> diff --git a/drivers/clk/shmobile/Makefile b/drivers/clk/shmobile/Makefile
> index e002923..9aab51c8 100644
> --- a/drivers/clk/shmobile/Makefile
> +++ b/drivers/clk/shmobile/Makefile
> @@ -6,5 +6,3 @@ obj-$(CONFIG_ARCH_R8A7790)              += clk-rcar-gen2.o
>  obj-$(CONFIG_ARCH_R8A7791)             += clk-rcar-gen2.o
>  obj-$(CONFIG_ARCH_SHMOBILE_MULTI)      += clk-div6.o
>  obj-$(CONFIG_ARCH_SHMOBILE_MULTI)      += clk-mstp.o
> -# for emply built-in.o
> -obj-n  := dummy
> diff --git a/drivers/net/wimax/Makefile b/drivers/net/wimax/Makefile
> index 992bc02..692184d 100644
> --- a/drivers/net/wimax/Makefile
> +++ b/drivers/net/wimax/Makefile
> @@ -1,5 +1 @@
> -
>  obj-$(CONFIG_WIMAX_I2400M)     += i2400m/
> -
> -# (from Sam Ravnborg) force kbuild to create built-in.o
> -obj- := dummy.o
> -- 
> 1.9.1
> 
> --
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