linux-yocto/scripts/package/mkspec
Masahiro Yamada 3089b2be0c kbuild: rpm-pkg: fix build error when _arch is undefined
Cross-building (bin)rpm-pkg fails on several architectures.

For example, 'make ARCH=arm binrpm-pkg' fails like follows:

  sh ./scripts/package/mkspec prebuilt > ./binkernel.spec
  rpmbuild  --define "_builddir ." --target \
          arm -bb ./binkernel.spec
  Building target platforms: arm
  Building for target arm
  warning: line 19: It's not recommended to have unversioned Obsoletes: Obsoletes: kernel-headers
  Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.0S8t2F
  + umask 022
  + cd .
  + mkdir -p /home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch}/boot
  + make -f ./Makefile image_name
  + cp arch/arm/boot/zImage /home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch}/boot/vmlinuz-5.19.0-rc6
  + make -f ./Makefile INSTALL_MOD_PATH=/home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch} modules_install
  make[3]: *** No rule to make target '/home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.arch/arm/crypto/aes-arm-bs.ko{_arch}/lib/modules/5.19.0-rc6/kernel/%', needed by '__modinst'.  Stop.
  make[2]: *** [Makefile:1768: modules_install] Error 2
  error: Bad exit status from /var/tmp/rpm-tmp.0S8t2F (%install)

By default, 'buildroot' contains %{_arch} (see /usr/lib/rpm/macros).

_arch is generally defined in /usr/lib/rpm/platforms/*/macros, where
the platform sub-directory is specified by --target= option for cross
builds.

If the given arch does not exist, %{_arch} is not expanded.
In the example above, --target=arm is passed to rpmbuild, but
/usr/lib/rpm/platforms/arm-linux/ does not exist.

The '%' character in the path confuses GNU make and rpmbuild.

The same occurs for such architectures as csky, microblaze, nios2, etc.

Define _arch if it has not been defined.

Reported-by: Jason Self <jason@bluehome.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:18:00 +09:00

4.8 KiB
Executable File

#!/bin/sh

Output a simple RPM spec file.

This version assumes a minimum of RPM 4.0.3.

The only gothic bit here is redefining install_post to avoid

stripping the symbols from files in the kernel which we want

Patched for non-x86 by Opencon (L) 2002 opencon@rio.skydome.net

how we were called determines which rpms we build and how we build them

if [ "$1" = prebuilt ]; then S=DEL MAKE="$MAKE -f $srctree/Makefile" else S= fi

if grep -q CONFIG_MODULES=y .config; then M= else M=DEL fi

if grep -q CONFIG_DRM=y .config; then PROVIDES=kernel-drm fi

PROVIDES="$PROVIDES kernel-$KERNELRELEASE" __KERNELRELEASE=$(echo $KERNELRELEASE | sed -e "s/-/_/g") EXCLUDES="$RCS_TAR_IGNORE --exclude=vmlinux --exclude=.mod
--exclude=
.o --exclude=.ko --exclude=.cmd --exclude=Documentation
--exclude=.config.old --exclude=.missing-syscalls.d --exclude=*.s"

We can label the here-doc lines for conditional output to the spec file

Labels:

$S: this line is enabled only when building source package

$M: this line is enabled only when CONFIG_MODULES is enabled

sed -e '/^DEL/d' -e 's/^\t*//' <<EOF Name: kernel Summary: The Linux Kernel Version: $__KERNELRELEASE Release: $(cat .version 2>/dev/null || echo 1) License: GPL Group: System Environment/Kernel Vendor: The Linux Community URL: https://www.kernel.org $S Source: kernel-$__KERNELRELEASE.tar.gz Provides: $PROVIDES # $UTS_MACHINE as a fallback of _arch in case # /usr/lib/rpm/platform/*/macros was not included. %define _arch %{?_arch:$UTS_MACHINE} %define __spec_install_post /usr/lib/rpm/brp-compress || : %define debug_package %{nil}

%description
The Linux Kernel, the operating system core itself

%package headers
Summary: Header files for the Linux kernel for use by glibc
Group: Development/System
Obsoletes: kernel-headers
Provides: kernel-headers = %{version}
%description headers
Kernel-headers includes the C header files that specify the interface
between the Linux kernel and userspace libraries and programs.  The
header files define structures and constants that are needed for
building most standard programs and are also needed for rebuilding the
glibc package.

$S$M %package devel $S$M Summary: Development package for building kernel modules to match the $__KERNELRELEASE kernel $S$M Group: System Environment/Kernel $S$M AutoReqProv: no $S$M %description -n kernel-devel $S$M This package provides kernel headers and makefiles sufficient to build modules $S$M against the $__KERNELRELEASE kernel package. $S$M $S %prep $S %setup -q $S $S %build $S $MAKE %{?_smp_mflags} KBUILD_BUILD_VERSION=%{release} $S %install mkdir -p %{buildroot}/boot %ifarch ia64 mkdir -p %{buildroot}/boot/efi cp $($MAKE image_name) %{buildroot}/boot/efi/vmlinuz-$KERNELRELEASE ln -s efi/vmlinuz-$KERNELRELEASE %{buildroot}/boot/ %else cp $($MAKE image_name) %{buildroot}/boot/vmlinuz-$KERNELRELEASE %endif $M $MAKE %{?_smp_mflags} INSTALL_MOD_PATH=%{buildroot} modules_install $MAKE %{?_smp_mflags} INSTALL_HDR_PATH=%{buildroot}/usr headers_install cp System.map %{buildroot}/boot/System.map-$KERNELRELEASE cp .config %{buildroot}/boot/config-$KERNELRELEASE bzip2 -9 --keep vmlinux mv vmlinux.bz2 %{buildroot}/boot/vmlinux-$KERNELRELEASE.bz2 $S$M rm -f %{buildroot}/lib/modules/$KERNELRELEASE/build $S$M rm -f %{buildroot}/lib/modules/$KERNELRELEASE/source $S$M mkdir -p %{buildroot}/usr/src/kernels/$KERNELRELEASE $S$M tar cf - $EXCLUDES . | tar xf - -C %{buildroot}/usr/src/kernels/$KERNELRELEASE $S$M cd %{buildroot}/lib/modules/$KERNELRELEASE $S$M ln -sf /usr/src/kernels/$KERNELRELEASE build $S$M ln -sf /usr/src/kernels/$KERNELRELEASE source

%clean
rm -rf %{buildroot}

%post
if [ -x /sbin/installkernel -a -r /boot/vmlinuz-$KERNELRELEASE -a -r /boot/System.map-$KERNELRELEASE ]; then
cp /boot/vmlinuz-$KERNELRELEASE /boot/.vmlinuz-$KERNELRELEASE-rpm
cp /boot/System.map-$KERNELRELEASE /boot/.System.map-$KERNELRELEASE-rpm
rm -f /boot/vmlinuz-$KERNELRELEASE /boot/System.map-$KERNELRELEASE
/sbin/installkernel $KERNELRELEASE /boot/.vmlinuz-$KERNELRELEASE-rpm /boot/.System.map-$KERNELRELEASE-rpm
rm -f /boot/.vmlinuz-$KERNELRELEASE-rpm /boot/.System.map-$KERNELRELEASE-rpm
fi

%preun
if [ -x /sbin/new-kernel-pkg ]; then
new-kernel-pkg --remove $KERNELRELEASE --rminitrd --initrdfile=/boot/initramfs-$KERNELRELEASE.img
elif [ -x /usr/bin/kernel-install ]; then
kernel-install remove $KERNELRELEASE
fi

%postun
if [ -x /sbin/update-bootloader ]; then
/sbin/update-bootloader --remove $KERNELRELEASE
fi

%files
%defattr (-, root, root)

$M /lib/modules/$KERNELRELEASE $M %exclude /lib/modules/$KERNELRELEASE/build $M %exclude /lib/modules/$KERNELRELEASE/source /boot/*

%files headers
%defattr (-, root, root)
/usr/include

$S$M $S$M %files devel $S$M %defattr (-, root, root) $S$M /usr/src/kernels/$KERNELRELEASE $S$M /lib/modules/$KERNELRELEASE/build $S$M /lib/modules/$KERNELRELEASE/source EOF