linux-kernel - Re: [PATCH 2/3] powerpc: make the install target not depend on any build artifact

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Message-ID: <CAKwvOd=dkr_GYEO3fdges+saA-7r0b2xWsuMQDex3FNQJgQNCw@mail.gmail.com>
Date:   Fri, 30 Jul 2021 13:24:07 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, Nicholas Piggin <npiggin@...il.com>,
        linux-kernel@...r.kernel.org, Jordan Niethe <jniethe5@...il.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Bill Wendling <morbo@...gle.com>, Joel Stanley <joel@....id.au>
Subject: Re: [PATCH 2/3] powerpc: make the install target not depend on any
 build artifact

On Thu, Jul 29, 2021 at 7:22 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> The install target should not depend on any build artifact.
>
> The reason is explained in commit 19514fc665ff ("arm, kbuild: make
> "make install" not depend on vmlinux").
>
> Change the PowerPC installation code in a similar way.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>

Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>
>  arch/powerpc/boot/Makefile   |  2 +-
>  arch/powerpc/boot/install.sh | 14 ++++++++++++++
>  2 files changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
> index a702f9d1ec0d..0d165bd98b61 100644
> --- a/arch/powerpc/boot/Makefile
> +++ b/arch/powerpc/boot/Makefile
> @@ -445,7 +445,7 @@ $(obj)/zImage.initrd:       $(addprefix $(obj)/, $(initrd-y))
>         $(Q)rm -f $@; ln $< $@
>
>  # Only install the vmlinux
> -install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
> +install:
>         sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)"
>
>  PHONY += install
> diff --git a/arch/powerpc/boot/install.sh b/arch/powerpc/boot/install.sh
> index 658c93ca7437..14473150ddb4 100644
> --- a/arch/powerpc/boot/install.sh
> +++ b/arch/powerpc/boot/install.sh
> @@ -20,6 +20,20 @@
>  # Bail with error code if anything goes wrong
>  set -e
>
> +verify () {
> +       if [ ! -f "$1" ]; then
> +               echo ""                                                   1>&2
> +               echo " *** Missing file: $1"                              1>&2
> +               echo ' *** You need to run "make" before "make install".' 1>&2
> +               echo ""                                                   1>&2
> +               exit 1
> +       fi
> +}
> +
> +# Make sure the files actually exist
> +verify "$2"
> +verify "$3"
> +
>  # User may have a custom install script
>
>  if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
> --
> 2.27.0
>


-- 
Thanks,
~Nick Desaulniers