linux-kernel - Re: [PATCH v6 2/2] kbuild: rpm-pkg: Fix build with non-default MODLIB

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Message-ID: <20231210210859.GN9696@kitsune.suse.cz>
Date:   Sun, 10 Dec 2023 22:08:59 +0100
From:   Michal Suchánek <msuchanek@...e.de>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-modules@...r.kernel.org, Takashi Iwai <tiwai@...e.com>,
        Lucas De Marchi <lucas.de.marchi@...il.com>,
        Michal Koutný <mkoutny@...e.com>,
        Jiri Slaby <jslaby@...e.com>, Jan Engelhardt <jengelh@...i.de>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 2/2] kbuild: rpm-pkg: Fix build with non-default MODLIB

On Mon, Dec 11, 2023 at 03:44:35AM +0900, Masahiro Yamada wrote:
> On Thu, Dec 7, 2023 at 4:48 AM Michal Suchanek <msuchanek@...e.de> wrote:
> >
> > The default MODLIB value is composed of three variables
> >
> > MODLIB = $(INSTALL_MOD_PATH)$(KERNEL_MODULE_DIRECTORY)/$(KERNELRELEASE)
> >
> > However, the kernel.spec hadcodes the default value of
> > $(KERNEL_MODULE_DIRECTORY), and changed value is not reflected when
> > building the package.
> >
> > Pass KERNEL_MODULE_DIRECTORY to kernel.spec to fix this problem.
> >
> > Signed-off-by: Michal Suchanek <msuchanek@...e.de>
> > ---
> > Build on top of the previous patch adding KERNEL_MODULE_DIRECTORY
> 
> 
> The SRPM package created by 'make srcrpm-pkg' may not work
> if rpmbuild is executed in a different machine.

That's why there is an option to override KERNEL_MODULE_DIRECTORY?

Thanks

Michal

> 
> 
> 
> %{make} %{makeflags} INSTALL_MOD_PATH=%{buildroot}
> KERNEL_MODULE_DIRECTORY=%{KERNEL_MODULE_DIRECTORY} modules_install
> 
> 
> will align with the specified install destination,
> but depmod will still fail.
> (same issue as 1/2)
> 
> 
> 
> 
> 
> 
> 
> 
> 
> > ---
> >  scripts/package/kernel.spec | 8 ++++----
> >  scripts/package/mkspec      | 1 +
> >  2 files changed, 5 insertions(+), 4 deletions(-)
> >
> > diff --git a/scripts/package/kernel.spec b/scripts/package/kernel.spec
> > index 3eee0143e0c5..12996ed365f8 100644
> > --- a/scripts/package/kernel.spec
> > +++ b/scripts/package/kernel.spec
> > @@ -67,7 +67,7 @@ cp $(%{make} %{makeflags} -s image_name) %{buildroot}/boot/vmlinuz-%{KERNELRELEA
> >  %{make} %{makeflags} INSTALL_HDR_PATH=%{buildroot}/usr headers_install
> >  cp System.map %{buildroot}/boot/System.map-%{KERNELRELEASE}
> >  cp .config %{buildroot}/boot/config-%{KERNELRELEASE}
> > -ln -fns /usr/src/kernels/%{KERNELRELEASE} %{buildroot}/lib/modules/%{KERNELRELEASE}/build
> > +ln -fns /usr/src/kernels/%{KERNELRELEASE} %{buildroot}%{KERNEL_MODULE_DIRECTORY}/%{KERNELRELEASE}/build
> >  %if %{with_devel}
> >  %{make} %{makeflags} run-command KBUILD_RUN_COMMAND='${srctree}/scripts/package/install-extmod-build %{buildroot}/usr/src/kernels/%{KERNELRELEASE}'
> >  %endif
> > @@ -98,8 +98,8 @@ fi
> >
> >  %files
> >  %defattr (-, root, root)
> > -/lib/modules/%{KERNELRELEASE}
> > -%exclude /lib/modules/%{KERNELRELEASE}/build
> > +%{KERNEL_MODULE_DIRECTORY}/%{KERNELRELEASE}
> > +%exclude %{KERNEL_MODULE_DIRECTORY}/%{KERNELRELEASE}/build
> >  /boot/*
> >
> >  %files headers
> > @@ -110,5 +110,5 @@ fi
> >  %files devel
> >  %defattr (-, root, root)
> >  /usr/src/kernels/%{KERNELRELEASE}
> > -/lib/modules/%{KERNELRELEASE}/build
> > +%{KERNEL_MODULE_DIRECTORY}/%{KERNELRELEASE}/build
> >  %endif
> > diff --git a/scripts/package/mkspec b/scripts/package/mkspec
> > index ce201bfa8377..e952fa4f2937 100755
> > --- a/scripts/package/mkspec
> > +++ b/scripts/package/mkspec
> > @@ -24,6 +24,7 @@ fi
> >  cat<<EOF
> >  %define ARCH ${ARCH}
> >  %define KERNELRELEASE ${KERNELRELEASE}
> > +%define KERNEL_MODULE_DIRECTORY ${KERNEL_MODULE_DIRECTORY}
> >  %define pkg_release $("${srctree}/init/build-version")
> >  EOF
> >
> > --
> > 2.42.0
> >
> >
> 
> 
> --
> Best Regards
> Masahiro Yamada