linux-kernel - Re: [PATCH 1/1] Makefile.build: Add an explicit error for missing ASN.1 compiler

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Message-ID: <CAK7LNATg2MG4xSoHiEa5CvB0x+LYS9ZOGKWz0ytBhBRcvCogoQ@mail.gmail.com>
Date:   Fri, 25 Sep 2020 02:18:20 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     James Bottomley <James.Bottomley@...senpartnership.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] Makefile.build: Add an explicit error for missing
 ASN.1 compiler

On Wed, Sep 23, 2020 at 12:55 AM James Bottomley
<James.Bottomley@...senpartnership.com> wrote:
>
> The current dependency rules mean that the build breaks if the ASN.1
> compiler is required but CONFIG_ASN1 isn't set.  However, it isn't
> obvious from the error message about missing files what the actual
> problem is, so make the build system give an explicit error.
>
> Signed-off-by: James Bottomley <James.Bottomley@...senPartnership.com>
> ---

Applied to linux-kbuild.
Thanks.


>  scripts/Makefile.build | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index a467b9323442..bca7003beac8 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -382,6 +382,11 @@ quiet_cmd_asn1_compiler = ASN.1   $(basename $@).[ch]
>        cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \
>                                 $(basename $@).c $(basename $@).h
>
> +ifndef CONFIG_ASN1
> +$(objtree)/scripts/asn1_compiler:
> +       $(error CONFIG_ASN1 must be defined for the asn1_compiler)
> +endif
> +
>  $(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
>         $(call cmd,asn1_compiler)
>
> --
> 2.26.2
>


-- 
Best Regards
Masahiro Yamada