kernel-tfg/master.inc

%global KVERREL %{version}-%{release}.%{_target_cpu}

# disable the '-debug{info,source}' pkgs
%define debug_package %{nil}
# also disable packaging files in '/usr/lib/.build-id/'
%define _build_id_links none

Summary: The Linux Kernel
License: GPL
URL: https://www.kernel.org
Provides: %{name}-%{KVERREL}
BuildRequires: bc binutils bison dwarves
BuildRequires: (elfutils-libelf-devel or libelf-devel) flex
BuildRequires: gcc make openssl openssl-devel perl python3 rsync
BuildRequires: opencsd-devel
BuildRequires: kmod
BuildRequires: python3-devel
Requires: coreutils systemd dracut
Requires: /usr/bin/kernel-install
Requires: linux-firmware

%ifarch aarch64
%global build_arch arm64
%global make_targets Image.gz modules dtbs
%endif

%ifarch riscv64
%global build_arch riscv64
%global make_targets Image.gz modules dtbs
%endif

%global kernel_image $(make -s image_name)
%global make make KERNELRELEASE=%{KVERREL}

Source2: https://git.thefossguy.com/enterprise-linux/kernel-tfg/archive/master.tar.gz

%description
The Linux Kernel, the operating system core itself

%package headers
Summary: Header files for the Linux kernel for use by glibc
%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

%package devel
Summary: Development package for building kernel modules to match the kernel
%description devel
This package provides kernel headers and makefiles sufficient to build modules
against the kernel package.

%prep
if [ -f ../SOURCES/linux-%{version}.tar.sign ]; then
    gzip --decompress --keep %{SOURCE0}
    gpg2 --locate-keys torvalds@kernel.org gregkh@kernel.org
    gpg2 --verify %{SOURCE99} || exit 1

    # not needed anymore, might as well delete it to make space for the
    # build and install phases
    rm -vf linux-%{version}.tar
fi
%setup -q -n %{src_dir}

# Mangle all Python shebangs to be Python 3 explicitly.
# -i specifies the interpreter for the shebang
# -n prevents creating ~backup files
# -p preserves timestamps
# This fixes errors such as
# *** ERROR: ambiguous python shebang in /usr/bin/kvm_stat: #!/usr/bin/python. Change it to python3 (or python2) explicitly.
# Process all files in the Documentation, scripts and tools directories.
pathfix.py -i "%{__python3} %{py3_shbang_opts}" -n -p \
	tools/kvm/kvm_stat/kvm_stat \
	scripts/show_delta \
	scripts/jobserver-exec \
	scripts/diffconfig \
	scripts/clang-tools \
	scripts/bloat-o-meter \
	tools \
	scripts \
	Documentation \
    drivers

tar -xf %{SOURCE2} -C .
cp -vr kernel-tfg/{configure-linux.sh,extra-configs} .
rm -rf kernel-tfg/

source ./configure-linux.sh

[ -f .config ] && rm -vf .config*
%{make} distclean

%{make} "${EXTRA_LINUX_CONFIG[@]}" defconfig
verify_config

%build
source ./configure-linux.sh
%{make} %{?_smp_mflags} PYTHON=%{__python3} %{make_targets}
verify_config

%install
rm -rf $RPM_BUILD_ROOT
mkdir -p $RPM_BUILD_ROOT

mkdir -p $RPM_BUILD_ROOT/boot
mkdir -p $RPM_BUILD_ROOT%{_libexecdir}
mkdir -p $RPM_BUILD_ROOT/lib/modules/%{KVERREL}
mkdir -p $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/systemtap

# install DTBs
%ifarch aarch64 || riscv64
%{make} %{?_smp_mflags} dtbs_install INSTALL_DTBS_PATH=$RPM_BUILD_ROOT/boot/dtb-%{KVERREL}
cp -r $RPM_BUILD_ROOT/boot/dtb-%{KVERREL} $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/dtb
find arch/%{build_arch}/boot/dts -name '*.dtb' -type f -delete
%endif

# install modules
# Disable depmod with by passing '/doesnt/exist' to the DEPMOD environment variable.
# '$(mod-fw)' is overridden because there is no reason to install any firmware
# since we already have 'linux-firmware' package as the dependency of this package.
%{make} %{?_smp_mflags} modules_install INSTALL_MOD_PATH=$RPM_BUILD_ROOT DEPMOD=/doesnt/exist mod-fw=

# install headers
%{make} %{?_smp_mflags} headers_install INSTALL_HDR_PATH=$RPM_BUILD_ROOT/usr

# install other key files too
cp System.map $RPM_BUILD_ROOT/boot/System.map-%{KVERREL}
cp .config $RPM_BUILD_ROOT/boot/config-%{KVERREL}

# install the kernel
cp %{kernel_image} $RPM_BUILD_ROOT/boot/vmlinuz-%{KVERREL}
chmod 755 $RPM_BUILD_ROOT/boot/vmlinuz-%{KVERREL}
cp $RPM_BUILD_ROOT/boot/vmlinuz-%{KVERREL} $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/vmlinuz

# cleanup of sorts
EXCLUDES="--exclude=SCCS --exclude=BitKeeper --exclude=.svn \
    --exclude=CVS --exclude=.pc --exclude=.hg --exclude=.git \
    --exclude=*vmlinux* --exclude=*.mod \
    --exclude=*.o --exclude=*.ko --exclude=*.cmd --exclude=Documentation \
    --exclude=.config.old --exclude=.missing-syscalls.d --exclude=*.s"
rm -rf $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
rm -rf $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/source
mkdir -p $RPM_BUILD_ROOT/usr/src/kernels/%{KVERREL}
tar cf - $EXCLUDES . | tar xf - -C $RPM_BUILD_ROOT/usr/src/kernels/%{KVERREL}
cd $RPM_BUILD_ROOT/lib/modules/%{KVERREL}
ln -fns /usr/src/kernels/%{KVERREL} $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/build
ln -fns /usr/src/kernels/%{KVERREL} $RPM_BUILD_ROOT/lib/modules/%{KVERREL}/source

%clean
rm -rf $RPM_BUILD_ROOT

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

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

%postun
if [ -x /sbin/update-bootloader ]; then
    /sbin/update-bootloader --remove %{KVERREL}
fi

%files
%defattr (-, root, root)
/boot
/lib/modules/%{KVERREL}

%files headers
/usr/include

%files devel
/usr/src/kernels/%{KVERREL}