linux-kernel - Re: [PATCH 1/2] kbuild: add AFLAGS_REMOVE

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Date:	Mon, 30 Nov 2015 09:17:08 +0100
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Michal Marek <mmarek@...e.com>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH 1/2] kbuild: add AFLAGS_REMOVE_(basename).o option

On Sat, Nov 21, 2015 at 11:59:58AM +0100, Heiko Carstens wrote:
> It is already possible to remove CFLAGS with the CFLAGS_REMOVE option
> that was introduced with commit 656ee82cc855 ("kbuild: create new
> CFLAGS_REMOVE_(basename).o option").  However it is not possible to
> remove AFLAGS for assembler files.
> 
> So this patch just adds the AFLAGS_REMOVE option which works the same
> like CFLAGS_REMOVE.
> 
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
> ---
>  scripts/Makefile.lib | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 79e86613712f..26a48d76eb9d 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -104,8 +104,9 @@ modname_flags  = $(if $(filter 1,$(words $(modname))),\
>  orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
>                   $(ccflags-y) $(CFLAGS_$(basetarget).o)
>  _c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
> -_a_flags       = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
> +orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
>                   $(asflags-y) $(AFLAGS_$(basetarget).o)
> +_a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
>  _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
>  
>  #

Hello Michal,

since I didn't hear anything from you, I'll simply add this to the s390 tree.
The patch should be trivial enough and is certainly not controversial.

Thanks,
Heiko

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