#!/bin/sh
#
#	Output a simple RPM spec file.
#	This version assumes a minimum of RPM 4.13
#
#	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 [ -z "$1" ]; then
	mkdir -p rpmbuild/SOURCES
	cp linux.tar.gz rpmbuild/SOURCES
	cp "${KCONFIG_CONFIG}" rpmbuild/SOURCES/config
	"${srctree}/scripts/package/gen-diff-patch" rpmbuild/SOURCES/diff.patch
fi

if grep -q CONFIG_MODULES=y include/config/auto.conf; then
echo '%define with_devel %{?_without_devel: 0} %{?!_without_devel: 1}'
else
echo '%define with_devel 0'
fi

cat<<-EOF
%define ARCH ${ARCH}
%define KERNELRELEASE ${KERNELRELEASE}
%define pkg_release $("${srctree}/init/build-version")

# _arch is undefined if /usr/lib/rpm/platform/*/macros was not included.
%{!?_arch: %define _arch dummy}
%{!?make: %define make make}
%define makeflags %{?_smp_mflags} ARCH=%{ARCH}

	Name: kernel
	Summary: The Linux Kernel
	Version: %(echo %{KERNELRELEASE} | sed -e 's/-/_/g')
	Release: %{pkg_release}
	License: GPL
	Group: System Environment/Kernel
	Vendor: The Linux Community
	URL: https://www.kernel.org
	Source0: linux.tar.gz
	Source1: config
	Source2: diff.patch
	Provides: kernel-%{KERNELRELEASE}
	BuildRequires: bc binutils bison dwarves
	BuildRequires: (elfutils-libelf-devel or libelf-devel) flex
	BuildRequires: gcc make openssl openssl-devel perl python3 rsync

	%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.

	%if %{with_devel}
	%package devel
	Summary: Development package for building kernel modules to match the %{version} kernel
	Group: System Environment/Kernel
	AutoReqProv: no
	%description -n kernel-devel
	This package provides kernel headers and makefiles sufficient to build modules
	against the %{version} kernel package.
	%endif

	%prep
	%setup -q -n linux
	cp %{SOURCE1} .config
	patch -p1 < %{SOURCE2}

	%build
	%{make} %{makeflags} KERNELRELEASE=%{KERNELRELEASE} KBUILD_BUILD_VERSION=%{release}

	%install
	mkdir -p %{buildroot}/boot
	%ifarch ia64
	mkdir -p %{buildroot}/boot/efi
	cp \$(%{make} %{makeflags} -s image_name) %{buildroot}/boot/efi/vmlinuz-%{KERNELRELEASE}
	ln -s efi/vmlinuz-%{KERNELRELEASE} %{buildroot}/boot/
	%else
	cp \$(%{make} %{makeflags} -s image_name) %{buildroot}/boot/vmlinuz-%{KERNELRELEASE}
	%endif
	%{make} %{makeflags} INSTALL_MOD_PATH=%{buildroot} modules_install
	%{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}/lib/modules/%{KERNELRELEASE}/source
	%if %{with_devel}
	%{make} %{makeflags} run-command KBUILD_RUN_COMMAND='\${srctree}/scripts/package/install-extmod-build %{buildroot}/usr/src/kernels/%{KERNELRELEASE}'
	%endif

	%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)
	/lib/modules/%{KERNELRELEASE}
	%exclude /lib/modules/%{KERNELRELEASE}/build
	%exclude /lib/modules/%{KERNELRELEASE}/source
	/boot/*

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

	%if %{with_devel}
	%files devel
	%defattr (-, root, root)
	/usr/src/kernels/%{KERNELRELEASE}
	/lib/modules/%{KERNELRELEASE}/build
	/lib/modules/%{KERNELRELEASE}/source
	%endif
EOF