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From:   Masahiro Yamada <masahiroy@kernel.org>
Date:   Mon, 23 Nov 2020 14:23:16 +0900
Message-ID: <CAK7LNARnmJRy1NPBDkgNsoe_TqpD=HJhmri4YHjXjscGZ-neWw@mail.gmail.com>
Subject: Re: [PATCH] kbuild: add extra-y to targets-for-modules
To:     WANG Chao <chao.wang@ucloud.cn>
Cc:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>
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On Tue, Nov 3, 2020 at 3:23 PM WANG Chao <chao.wang@ucloud.cn> wrote:
>
> extra-y target doesn't build for 'make M=...' since commit 6212804f2d78
> ("kbuild: do not create built-in objects for external module builds").
>
> This especially breaks kpatch, which is using 'extra-y := kpatch.lds'
> and 'make M=...' to build livepatch patch module.
>
> Add extra-y to targets-for-modules so that such kind of build works
> properly.
>
> Signed-off-by: WANG Chao <chao.wang@ucloud.cn>
> ---
>  scripts/Makefile.build | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index ae647379b579..0113a042d643 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -86,7 +86,7 @@ ifdef need-builtin
>  targets-for-builtin += $(obj)/built-in.a
>  endif
>
> -targets-for-modules := $(patsubst %.o, %.mod, $(filter %.o, $(obj-m)))
> +targets-for-modules := $(extra-y) $(patsubst %.o, %.mod, $(filter %.o, $(obj-m)))
>
>  ifdef need-modorder
>  targets-for-modules += $(obj)/modules.order
> --
> 2.29.1
>

NACK.

Please fix your Makefile.

Hint:
https://patchwork.kernel.org/project/linux-kbuild/patch/20201123045403.63402-6-masahiroy@kernel.org/


Probably what you should use is 'targets'.


-- 
Best Regards
Masahiro Yamada