mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
c93a0368aa
header-test-y does not work with headers in sub-directories.
For example, you may want to write a Makefile, like this:
include/linux/Kbuild:
header-test-y += mtd/nand.h
This entry will create a wrapper include/linux/mtd/nand.hdrtest.c
with the following content:
#include "mtd/nand.h"
To make this work, we need to add $(srctree)/include/linux to the
header search path. It would be tedious to add ccflags-y.
Instead, we could change the *.hdrtest.c rule to wrap:
#include "nand.h"
This works for in-tree build since #include "..." searches in the
relative path from the header with this directive. For O=... build,
we need to add $(srctree)/include/linux/mtd to the header search path,
which will be even more tedious.
After all, I thought it would be handier to compile headers directly
without creating wrappers.
I added a new build rule to compile %.h into %.h.s
The target is %.h.s instead of %.h.o because it is slightly faster.
Also, as for GCC, an empty assembly is smaller than an empty object.
I wrote the build rule:
$(CC) $(c_flags) -S -o $@ -x c /dev/null -include $<
instead of:
$(CC) $(c_flags) -S -o $@ -x c $<
Both work fine with GCC, but the latter is bad for Clang.
This comes down to the difference in the -Wunused-function policy.
GCC does not warn about unused 'static inline' functions at all.
Clang does not warn about the ones in included headers, but does
about the ones in the source. So, we should handle headers as
headers, not as source files.
In fact, this has been hidden since commit abb2ea7dfd ("compiler,
clang: suppress warning for unused static inline functions"), but we
should not rely on that.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Jani Nikula <jani.nikula@intel.com>
148 lines
4.7 KiB
Bash
Executable File
148 lines
4.7 KiB
Bash
Executable File
#!/bin/sh
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#
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# Output a simple RPM spec file.
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# This version assumes a minimum of RPM 4.0.3.
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#
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# The only gothic bit here is redefining install_post to avoid
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# stripping the symbols from files in the kernel which we want
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#
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# Patched for non-x86 by Opencon (L) 2002 <opencon@rio.skydome.net>
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#
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# how we were called determines which rpms we build and how we build them
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if [ "$1" = prebuilt ]; then
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S=DEL
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MAKE="$MAKE -f $srctree/Makefile"
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else
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S=
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fi
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if grep -q CONFIG_MODULES=y .config; then
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M=
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else
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M=DEL
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fi
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if grep -q CONFIG_DRM=y .config; then
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PROVIDES=kernel-drm
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fi
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PROVIDES="$PROVIDES kernel-$KERNELRELEASE"
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__KERNELRELEASE=$(echo $KERNELRELEASE | sed -e "s/-/_/g")
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EXCLUDES="$RCS_TAR_IGNORE --exclude=.tmp_versions --exclude=*vmlinux* \
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--exclude=*.o --exclude=*.ko --exclude=*.cmd --exclude=Documentation \
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--exclude=.config.old --exclude=.missing-syscalls.d --exclude=*.s"
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# We can label the here-doc lines for conditional output to the spec file
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#
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# Labels:
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# $S: this line is enabled only when building source package
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# $M: this line is enabled only when CONFIG_MODULES is enabled
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sed -e '/^DEL/d' -e 's/^\t*//' <<EOF
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Name: kernel
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Summary: The Linux Kernel
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Version: $__KERNELRELEASE
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Release: $(cat .version 2>/dev/null || echo 1)
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License: GPL
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Group: System Environment/Kernel
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Vendor: The Linux Community
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URL: http://www.kernel.org
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$S Source: kernel-$__KERNELRELEASE.tar.gz
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Provides: $PROVIDES
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%define __spec_install_post /usr/lib/rpm/brp-compress || :
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%define debug_package %{nil}
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%description
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The Linux Kernel, the operating system core itself
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%package headers
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Summary: Header files for the Linux kernel for use by glibc
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Group: Development/System
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Obsoletes: kernel-headers
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Provides: kernel-headers = %{version}
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%description headers
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Kernel-headers includes the C header files that specify the interface
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between the Linux kernel and userspace libraries and programs. The
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header files define structures and constants that are needed for
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building most standard programs and are also needed for rebuilding the
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glibc package.
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$S$M %package devel
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$S$M Summary: Development package for building kernel modules to match the $__KERNELRELEASE kernel
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$S$M Group: System Environment/Kernel
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$S$M AutoReqProv: no
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$S$M %description -n kernel-devel
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$S$M This package provides kernel headers and makefiles sufficient to build modules
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$S$M against the $__KERNELRELEASE kernel package.
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$S$M
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$S %prep
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$S %setup -q
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$S
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$S %build
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$S $MAKE %{?_smp_mflags} KBUILD_BUILD_VERSION=%{release}
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$S
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%install
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mkdir -p %{buildroot}/boot
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%ifarch ia64
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mkdir -p %{buildroot}/boot/efi
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cp \$($MAKE image_name) %{buildroot}/boot/efi/vmlinuz-$KERNELRELEASE
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ln -s efi/vmlinuz-$KERNELRELEASE %{buildroot}/boot/
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%else
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cp \$($MAKE image_name) %{buildroot}/boot/vmlinuz-$KERNELRELEASE
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%endif
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$M $MAKE %{?_smp_mflags} INSTALL_MOD_PATH=%{buildroot} modules_install
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$MAKE %{?_smp_mflags} INSTALL_HDR_PATH=%{buildroot}/usr headers_install
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cp System.map %{buildroot}/boot/System.map-$KERNELRELEASE
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cp .config %{buildroot}/boot/config-$KERNELRELEASE
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bzip2 -9 --keep vmlinux
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mv vmlinux.bz2 %{buildroot}/boot/vmlinux-$KERNELRELEASE.bz2
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$S$M rm -f %{buildroot}/lib/modules/$KERNELRELEASE/build
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$S$M rm -f %{buildroot}/lib/modules/$KERNELRELEASE/source
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$S$M mkdir -p %{buildroot}/usr/src/kernels/$KERNELRELEASE
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$S$M tar cf - $EXCLUDES . | tar xf - -C %{buildroot}/usr/src/kernels/$KERNELRELEASE
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$S$M cd %{buildroot}/lib/modules/$KERNELRELEASE
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$S$M ln -sf /usr/src/kernels/$KERNELRELEASE build
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$S$M ln -sf /usr/src/kernels/$KERNELRELEASE source
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%clean
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rm -rf %{buildroot}
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%post
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if [ -x /sbin/installkernel -a -r /boot/vmlinuz-$KERNELRELEASE -a -r /boot/System.map-$KERNELRELEASE ]; then
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cp /boot/vmlinuz-$KERNELRELEASE /boot/.vmlinuz-$KERNELRELEASE-rpm
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cp /boot/System.map-$KERNELRELEASE /boot/.System.map-$KERNELRELEASE-rpm
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rm -f /boot/vmlinuz-$KERNELRELEASE /boot/System.map-$KERNELRELEASE
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/sbin/installkernel $KERNELRELEASE /boot/.vmlinuz-$KERNELRELEASE-rpm /boot/.System.map-$KERNELRELEASE-rpm
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rm -f /boot/.vmlinuz-$KERNELRELEASE-rpm /boot/.System.map-$KERNELRELEASE-rpm
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fi
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%preun
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if [ -x /sbin/new-kernel-pkg ]; then
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new-kernel-pkg --remove $KERNELRELEASE --rminitrd --initrdfile=/boot/initramfs-$KERNELRELEASE.img
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elif [ -x /usr/bin/kernel-install ]; then
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kernel-install remove $KERNELRELEASE
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fi
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%postun
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if [ -x /sbin/update-bootloader ]; then
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/sbin/update-bootloader --remove $KERNELRELEASE
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fi
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%files
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%defattr (-, root, root)
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$M /lib/modules/$KERNELRELEASE
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$M %exclude /lib/modules/$KERNELRELEASE/build
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$M %exclude /lib/modules/$KERNELRELEASE/source
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/boot/*
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%files headers
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%defattr (-, root, root)
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/usr/include
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$S$M
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$S$M %files devel
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$S$M %defattr (-, root, root)
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$S$M /usr/src/kernels/$KERNELRELEASE
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$S$M /lib/modules/$KERNELRELEASE/build
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$S$M /lib/modules/$KERNELRELEASE/source
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EOF
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