linux-kernel - Re: [PATCH 04/11] arch/x86: do not use EXTRA

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Date:	Mon, 15 Aug 2011 01:14:05 -0400
From:	Arnaud Lacombe <lacombar@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Arnaud Lacombe <lacombar@...il.com>,
	Sam Ravnborg <sam@...nborg.org>, x86@...nel.org
Subject: Re: [PATCH 04/11] arch/x86: do not use EXTRA_CFLAGS

Hi,

On Mon, Aug 15, 2011 at 1:07 AM, Arnaud Lacombe <lacombar@...il.com> wrote:
> Usage of these flags has been deprecated for nearly 4 years by:
>
>    commit f77bf01425b11947eeb3b5b54685212c302741b8
>    Author: Sam Ravnborg <sam@...tun.(none)>
>    Date:   Mon Oct 15 22:25:06 2007 +0200
>
>        kbuild: introduce ccflags-y, asflags-y and ldflags-y
>
> Moreover, these flags (at least EXTRA_CFLAGS) have been documented for command
> line use. By default, gmake(1) do not override command line setting, so this is
> likely to result in build failure or unexpected behavior.
>
> Replace their usage by Kbuild's `{as,cc,ld}flags-y'.
>
> Cc: Sam Ravnborg <sam@...nborg.org>
> Cc: x86@...nel.org
Signed-off-by: Arnaud Lacombe <lacombar@...il.com>

 - Arnaud

> ---
>  arch/x86/math-emu/Makefile |    4 ++--
>  arch/x86/pci/Makefile      |    4 +---
>  2 files changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/arch/x86/math-emu/Makefile b/arch/x86/math-emu/Makefile
> index 9b0c63b..60db1b8 100644
> --- a/arch/x86/math-emu/Makefile
> +++ b/arch/x86/math-emu/Makefile
> @@ -5,8 +5,8 @@
>  #DEBUG = -DDEBUGGING
>  DEBUG  =
>  PARANOID = -DPARANOID
> -EXTRA_CFLAGS   := $(PARANOID) $(DEBUG) -fno-builtin $(MATH_EMULATION)
> -EXTRA_AFLAGS   := $(PARANOID)
> +ccflags-y      := $(PARANOID) $(DEBUG) -fno-builtin $(MATH_EMULATION)
> +asflags-y      := $(PARANOID)
>
>  # From 'C' language sources:
>  C_OBJS =fpu_entry.o errors.o \
> diff --git a/arch/x86/pci/Makefile b/arch/x86/pci/Makefile
> index 6b8759f..aef971f 100644
> --- a/arch/x86/pci/Makefile
> +++ b/arch/x86/pci/Makefile
> @@ -22,6 +22,4 @@ obj-y                         += amd_bus.o bus_numa.o
>
>  obj-$(CONFIG_PCI_CNB20LE_QUIRK)        += broadcom_bus.o
>
> -ifeq ($(CONFIG_PCI_DEBUG),y)
> -EXTRA_CFLAGS += -DDEBUG
> -endif
> +ccflags-$(CONFIG_PCI_DEBUG) += -DDEBUG
> --
> 1.7.6.153.g78432
>
>
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