Date:   Fri, 27 Jan 2023 12:29:14 -0700
From:   Nathan Chancellor <nathan@kernel.org>
To:     Masahiro Yamada <masahiroy@kernel.org>
Cc:     linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
        Rasmus Villemoes <rasmus.villemoes@prevas.dk>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Nicolas Schier <nicolas@fjasle.eu>
Subject: Re: [PATCH 1/7] kbuild: do not put .scmversion into the source
 tarball
Message-ID: <Y9QmChqp0WEZSk+H@dev-arch.thelio-3990X>
References: <20230122141428.115372-1-masahiroy@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230122141428.115372-1-masahiroy@kernel.org>
Precedence: bulk

Hi Masahiro,

On Sun, Jan 22, 2023 at 11:14:21PM +0900, Masahiro Yamada wrote:
> .scmversion is used by (src)rpm-pkg and deb-pkg to carry KERNELRELEASE.
> 
> In fact, deb-pkg does not rely on it any more because the generated
> debian/rules specifies KERNELRELEASE from the command line.
> 
> Do likwise for (src)rpm-pkg, and remove this feature.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> ---
> 
>  scripts/Makefile.package |  6 ++----
>  scripts/package/mkspec   |  6 +++---
>  scripts/setlocalversion  | 19 +------------------
>  3 files changed, 6 insertions(+), 25 deletions(-)
> 
> diff --git a/scripts/Makefile.package b/scripts/Makefile.package
> index 525a2820976f..e84c4e8ceb8e 100644
> --- a/scripts/Makefile.package
> +++ b/scripts/Makefile.package
> @@ -32,7 +32,7 @@ export KDEB_SOURCENAME
>  TAR_CONTENT := Documentation LICENSES arch block certs crypto drivers fs \
>                 include init io_uring ipc kernel lib mm net rust \
>                 samples scripts security sound tools usr virt \
> -               .config .scmversion Makefile \
> +               .config Makefile \
>                 Kbuild Kconfig COPYING $(wildcard localversion*)
>  MKSPEC     := $(srctree)/scripts/package/mkspec
>  
> @@ -47,10 +47,8 @@ if test "$(objtree)" != "$(srctree)"; then \
>  	echo >&2; \
>  	false; \
>  fi ; \
> -$(srctree)/scripts/setlocalversion --save-scmversion; \
>  tar -I $(KGZIP) -c $(RCS_TAR_IGNORE) -f $(2).tar.gz \
> -	--transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3); \
> -rm -f $(objtree)/.scmversion
> +	--transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3)
>  
>  # rpm-pkg
>  # ---------------------------------------------------------------------------
> diff --git a/scripts/package/mkspec b/scripts/package/mkspec
> index adab28fa7f89..d3c6701b7769 100755
> --- a/scripts/package/mkspec
> +++ b/scripts/package/mkspec
> @@ -90,7 +90,7 @@ $S	rm -f scripts/basic/fixdep scripts/kconfig/conf
>  $S	rm -f tools/objtool/{fixdep,objtool}
>  $S
>  $S	%build
> -$S	$MAKE %{?_smp_mflags} KBUILD_BUILD_VERSION=%{release}
> +$S	$MAKE %{?_smp_mflags} KERNELRELEASE=%{version} KBUILD_BUILD_VERSION=%{release}
>  $S
>  	%install
>  	mkdir -p %{buildroot}/boot
> @@ -101,8 +101,8 @@ $S
>  	%else
>  	cp \$($MAKE -s image_name) %{buildroot}/boot/vmlinuz-$KERNELRELEASE
>  	%endif
> -$M	$MAKE %{?_smp_mflags} INSTALL_MOD_PATH=%{buildroot} modules_install
> -	$MAKE %{?_smp_mflags} INSTALL_HDR_PATH=%{buildroot}/usr headers_install
> +$M	$MAKE %{?_smp_mflags} KERNELRELEASE=%{version} INSTALL_MOD_PATH=%{buildroot} modules_install
> +	$MAKE %{?_smp_mflags} KERNELRELEASE=%{version} INSTALL_HDR_PATH=%{buildroot}/usr headers_install
>  	cp System.map %{buildroot}/boot/System.map-$KERNELRELEASE
>  	cp .config %{buildroot}/boot/config-$KERNELRELEASE
>  $S$M	rm -f %{buildroot}/lib/modules/$KERNELRELEASE/build
> diff --git a/scripts/setlocalversion b/scripts/setlocalversion
> index af4754a35e66..3b31702b4a4a 100755
> --- a/scripts/setlocalversion
> +++ b/scripts/setlocalversion
> @@ -11,16 +11,11 @@
>  #
>  
>  usage() {
> -	echo "Usage: $0 [--save-scmversion] [srctree]" >&2
> +	echo "Usage: $0 [srctree]" >&2
>  	exit 1
>  }
>  
> -scm_only=false
>  srctree=.
> -if test "$1" = "--save-scmversion"; then
> -	scm_only=true
> -	shift
> -fi
>  if test $# -gt 0; then
>  	srctree=$1
>  	shift
> @@ -35,10 +30,6 @@ scm_version()
>  	short=false
>  
>  	cd "$srctree"
> -	if test -e .scmversion; then
> -		cat .scmversion
> -		return
> -	fi
>  	if test "$1" = "--short"; then
>  		short=true
>  	fi
> @@ -103,14 +94,6 @@ collect_files()
>  	echo "$res"
>  }
>  
> -if $scm_only; then
> -	if test ! -e .scmversion; then
> -		res=$(scm_version)
> -		echo "$res" >.scmversion
> -	fi
> -	exit
> -fi
> -
>  if ! test -e include/config/auto.conf; then
>  	echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
>  	exit 1
> -- 
> 2.34.1
> 

I believe this patch causes issues with binrpm-pkg (I have not done a
full bisect, as I am not fully online today; the source path has been
replaced with $PWD):

$ make -skj"$(nproc)" ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- RPMOPTS="--define '_topdir $PWD/rpmbuild'" olddefconfig binrpm-pkg
...
Building target platforms: aarch64-linux
Building for target aarch64-linux
warning: line 23: It's not recommended to have unversioned Obsoletes: Obsoletes: kernel-headers
error: cannot open Packages database in /var/lib/rpm
Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.targJq
+ umask 022
+ cd .
+ /usr/bin/rm -rf $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64
+ /usr/bin/mkdir -p $PWD/rpmbuild/BUILDROOT
+ /usr/bin/mkdir $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64
+ mkdir -p $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/boot
++ make -f ./Makefile -s image_name
+ cp arch/arm64/boot/Image.gz $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/boot/vmlinuz-6.2.0-rc5-next-20230127+
+ make -f ./Makefile -j128 KERNELRELEASE=6.2.0_rc5_next_20230127+ INSTALL_MOD_PATH=$PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64 modules_install
make[3]: warning: -j128 forced in submake: resetting jobserver mode.
+ make -f ./Makefile -j128 KERNELRELEASE=6.2.0_rc5_next_20230127+ INSTALL_HDR_PATH=$PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/usr headers_install
make[3]: warning: -j128 forced in submake: resetting jobserver mode.
+ cp System.map $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/boot/System.map-6.2.0-rc5-next-20230127+
+ cp .config $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/boot/config-6.2.0-rc5-next-20230127+
+ /usr/lib/rpm/brp-compress
Processing files: kernel-6.2.0_rc5_next_20230127+-1.aarch64
error: File not found: $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/lib/modules/6.2.0-rc5-next-20230127+
warning: File not found: $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/lib/modules/6.2.0-rc5-next-20230127+/build
warning: File not found: $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/lib/modules/6.2.0-rc5-next-20230127+/source

RPM build warnings:
    line 23: It's not recommended to have unversioned Obsoletes: Obsoletes: kernel-headers
    File not found: $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/lib/modules/6.2.0-rc5-next-20230127+/build
    File not found: $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/lib/modules/6.2.0-rc5-next-20230127+/source

RPM build errors:
    cannot open Packages database in /var/lib/rpm
    File not found: $PWD/rpmbuild/BUILDROOT/kernel-6.2.0_rc5_next_20230127+-1.aarch64/lib/modules/6.2.0-rc5-next-20230127+
...

Cheers,
Nathan