linux-kernel - Re: [PATCH] kbuild: drop $(objtree)/ prefix support for clean-files

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Message-ID: <871qxda2jf.fsf@mpe.ellerman.id.au>
Date:   Sun, 01 May 2022 21:57:24 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Cédric Le Goater <clg@...d.org>,
        Joel Stanley <joel@....id.au>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicholas Piggin <npiggin@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] kbuild: drop $(objtree)/ prefix support for clean-files

Masahiro Yamada <masahiroy@...nel.org> writes:
> I think this hack is a bad idea. arch/powerpc/boot/Makefile is the
> only user. Let's stop doing this.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
>
>  arch/powerpc/boot/Makefile | 4 ++--

Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

cheers

>  scripts/Makefile.clean     | 8 +-------
>  2 files changed, 3 insertions(+), 9 deletions(-)
>
> diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
> index 4b4827c475c6..008bf0bff186 100644
> --- a/arch/powerpc/boot/Makefile
> +++ b/arch/powerpc/boot/Makefile
> @@ -453,8 +453,8 @@ clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
>  clean-kernel-base := vmlinux.strip vmlinux.bin
>  clean-kernel := $(addsuffix .gz,$(clean-kernel-base))
>  clean-kernel += $(addsuffix .xz,$(clean-kernel-base))
> -# If not absolute clean-files are relative to $(obj).
> -clean-files += $(addprefix $(objtree)/, $(clean-kernel))
> +# clean-files are relative to $(obj).
> +clean-files += $(addprefix ../../../, $(clean-kernel))
>  
>  WRAPPER_OBJDIR := /usr/lib/kernel-wrapper
>  WRAPPER_DTSDIR := /usr/lib/kernel-wrapper/dts
> diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
> index 74cb1c5c3658..878cec648959 100644
> --- a/scripts/Makefile.clean
> +++ b/scripts/Makefile.clean
> @@ -36,13 +36,7 @@ __clean-files	:= \
>  
>  __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
>  
> -# clean-files is given relative to the current directory, unless it
> -# starts with $(objtree)/ (which means "./", so do not add "./" unless
> -# you want to delete a file from the toplevel object directory).
> -
> -__clean-files   := $(wildcard                                               \
> -		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
> -		   $(filter $(objtree)/%, $(__clean-files)))
> +__clean-files   := $(wildcard $(addprefix $(obj)/, $(__clean-files)))
>  
>  # ==========================================================================
>  
> -- 
> 2.32.0