File kernel-cachyos.spec of Package kernel-cachyos

#
# spec file for package kernel-cachyos
#
# CachyOS Kernel for openSUSE — adapted from COPR/Fedora spec
# Source: https://github.com/CachyOS/copr-linux-cachyos
#
# Maintainer: Aisen <home:Aisen on OBS>
# License: GPL-2.0-only
#

# ── openSUSE macros ──────────────────────────────────────────────────
%define debug_package %{nil}
%define _build_id_links none
%define _default_patch_fuzz 3
%define _disable_source_fetch 0

# ── Kernel version definitions ───────────────────────────────────────
%define _basekver 6.13
%define _stablekver 2
%define _rpmver %{version}-%{release}
%define _kver %{_rpmver}.%{_arch}

%if %{_stablekver} == 0
    %define _tarkver %{_basekver}
%else
    %define _tarkver %{version}
%endif

# ── Build toggles ────────────────────────────────────────────────────
# Build a minimal kernel via modprobed.db (CI only, not for production)
%define _build_minimal 0

# Build with clang + ThinLTO
%define _build_lto 0

# Kernel tickrate: 100, 250, 300, 500, 600, 750, 1000
%define _hz_tick 1000

# x86_64 ISA level: 1-4 (default: 3 = x86-64-v3)
%define _x86_64_lvl 3

# ── LTO toolchain ────────────────────────────────────────────────────
%if %{_build_lto}
    %define _lto_args CC=clang CXX=clang++ LD=ld.lld LLVM=1 LLVM_IAS=1
    %define make_build make %{_lto_args} %{?_smp_mflags}
%else
    %define make_build make %{?_smp_mflags}
%endif

# ── Directory layout ─────────────────────────────────────────────────
%define _kernel_dir /lib/modules/%{_kver}
%define _devel_dir %{_prefix}/src/kernels/%{_kver}

# ── Patch sources ────────────────────────────────────────────────────
%define _patch_src https://raw.githubusercontent.com/CachyOS/kernel-patches/master/%{_basekver}

# ── Package metadata ─────────────────────────────────────────────────
Name:           kernel-cachyos
Summary:        CachyOS Linux Kernel — BORE scheduler, performance patches (openSUSE)
Version:        %{_basekver}.%{_stablekver}
Release:        cachyos1%{?dist}
License:        GPL-2.0-only
Group:          System/Kernel
URL:            https://cachyos.org
ExclusiveArch:  x86_64

Requires:       kernel-cachyos-core = %{_rpmver}
Requires:       kernel-cachyos-modules = %{_rpmver}
Provides:       kernel-cachyos = %{version}-%{release}
Provides:       multiversion(kernel)

# ── Build dependencies ────────────────────────────────────────────────
BuildRequires:  bc
BuildRequires:  bison
BuildRequires:  coreutils
BuildRequires:  dwarves
BuildRequires:  elfutils
BuildRequires:  fdupes
BuildRequires:  flex
BuildRequires:  gcc
BuildRequires:  gcc-c++
BuildRequires:  gettext-tools
BuildRequires:  gzip
BuildRequires:  hmaccalc
BuildRequires:  kmod
BuildRequires:  libelf-devel
BuildRequires:  libopenssl-devel
BuildRequires:  make
BuildRequires:  modutils
BuildRequires:  openssl
BuildRequires:  perl
BuildRequires:  python3
BuildRequires:  python3-PyYAML
BuildRequires:  xz
BuildRequires:  zstd

%if %{_build_lto}
BuildRequires:  clang
BuildRequires:  lld
BuildRequires:  llvm
%endif

# ── Sources ───────────────────────────────────────────────────────────
Source0:        https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-%{_tarkver}.tar.xz
Source1:        config-cachyos

%if %{_build_minimal}
Source2:        https://raw.githubusercontent.com/Frogging-Family/linux-tkg/master/linux-tkg-config/%{_basekver}/minimal-modprobed.db
%endif

# ── CachyOS patches ──────────────────────────────────────────────────
Patch0:         %{_patch_src}/all/0001-cachyos-base-all.patch
Patch1:         %{_patch_src}/sched/0001-bore-cachy.patch

%if %{_build_lto}
Patch2:         %{_patch_src}/misc/dkms-clang.patch
%endif

# ──────────────────────────────────────────────────────────────────────
%description
The CachyOS Linux kernel for openSUSE, featuring:
- BORE (Burst-Oriented Response Enhancer) CPU scheduler
- sched-ext (SCX) support for userspace schedulers
- Performance-oriented patches from CachyOS
- 1000 Hz tick rate, x86-64-v3 optimized
- Full SELinux, IMA and Secure Boot support

This is the meta package that pulls in kernel-cachyos-core and kernel-cachyos-modules.

# ══════════════════════════════════════════════════════════════════════
# %prep
# ══════════════════════════════════════════════════════════════════════
%prep
%setup -q -n linux-%{_tarkver}
%autopatch -p1 -v -M 9

cp %{SOURCE1} .config

# ── Enable CachyOS features ──────────────────────────────────────────
scripts/config -e CACHY -e SCHED_BORE

# SELinux as default LSM (openSUSE compatible)
scripts/config --set-str CONFIG_LSM lockdown,yama,integrity,selinux,bpf,landlock

# Do not override system hostname
scripts/config -u DEFAULT_HOSTNAME

# Tick rate
case %{_hz_tick} in
    100|250|300|500|600|750|1000)
        scripts/config -e HZ_%{_hz_tick} --set-val HZ %{_hz_tick};;
    *)
        echo "Invalid tickrate, defaulting to 1000Hz"
        scripts/config -e HZ_1000 --set-val HZ 1000;;
esac

# x86-64 ISA level
%if %{_x86_64_lvl} < 5 && %{_x86_64_lvl} > 0
    scripts/config --set-val X86_64_VERSION %{_x86_64_lvl}
%else
    echo "Invalid ISA level, defaulting to v3"
    scripts/config --set-val X86_64_VERSION 3
%endif

# Secure Boot / IMA support
scripts/config -e CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
scripts/config -e CONFIG_IMA
scripts/config -e CONFIG_IMA_APPRAISE_BOOTPARAM
scripts/config -e CONFIG_IMA_APPRAISE
scripts/config -e CONFIG_IMA_ARCH_POLICY

# Module compression = zstd
scripts/config -e CONFIG_MODULE_COMPRESS_ZSTD
scripts/config --set-str CONFIG_MODULE_COMPRESS_ZSTD_LEVEL 19

%if %{_build_lto}
    scripts/config -e LTO_CLANG_THIN
%endif

%if %{_build_minimal}
    %make_build LSMOD=%{SOURCE2} localmodconfig
%else
    %make_build olddefconfig
%endif

diff -u %{SOURCE1} .config || :

# ══════════════════════════════════════════════════════════════════════
# %build
# ══════════════════════════════════════════════════════════════════════
%build
%make_build EXTRAVERSION=-%{release}.%{_arch} all
%make_build -C tools/bpf/bpftool vmlinux.h feature-clang-bpf-co-re=1

# ══════════════════════════════════════════════════════════════════════
# %install
# ══════════════════════════════════════════════════════════════════════
%install
echo "Installing kernel image..."
install -Dm644 "$(%make_build -s image_name)" "%{buildroot}%{_kernel_dir}/vmlinuz"
zstd -19 < Module.symvers > %{buildroot}%{_kernel_dir}/symvers.zst

echo "Installing kernel modules..."
ZSTD_CLEVEL=19 %make_build INSTALL_MOD_PATH="%{buildroot}" INSTALL_MOD_STRIP=1 DEPMOD=/doesnt/exist modules_install

echo "Installing development files..."
install -Dt %{buildroot}%{_devel_dir} -m644 .config Makefile Module.symvers System.map tools/bpf/bpftool/vmlinux.h
cp .config %{buildroot}%{_kernel_dir}/config
cp System.map %{buildroot}%{_kernel_dir}/System.map

# Headers and build infrastructure for out-of-tree modules
cp --parents `find -type f -name "Makefile*" -o -name "Kconfig*"` %{buildroot}%{_devel_dir}
rm -rf %{buildroot}%{_devel_dir}/scripts
rm -rf %{buildroot}%{_devel_dir}/include
cp -a scripts %{buildroot}%{_devel_dir}
rm -rf %{buildroot}%{_devel_dir}/scripts/tracing
rm -f %{buildroot}%{_devel_dir}/scripts/spdxcheck.py

# Files needed for `make scripts`
cp -a --parents security/selinux/include/classmap.h %{buildroot}%{_devel_dir}
cp -a --parents security/selinux/include/initial_sid_to_string.h %{buildroot}%{_devel_dir}
cp -a --parents tools/include/tools/be_byteshift.h %{buildroot}%{_devel_dir}
cp -a --parents tools/include/tools/le_byteshift.h %{buildroot}%{_devel_dir}

# Files needed for `make prepare`
cp -a --parents tools/include/linux/compiler* %{buildroot}%{_devel_dir}
cp -a --parents tools/include/linux/types.h %{buildroot}%{_devel_dir}
cp -a --parents tools/build/Build.include %{buildroot}%{_devel_dir}
cp --parents tools/build/fixdep.c %{buildroot}%{_devel_dir}
cp --parents tools/objtool/sync-check.sh %{buildroot}%{_devel_dir}
cp -a --parents tools/bpf/resolve_btfids %{buildroot}%{_devel_dir}
cp --parents security/selinux/include/policycap_names.h %{buildroot}%{_devel_dir}
cp --parents security/selinux/include/policycap.h %{buildroot}%{_devel_dir}
cp -a --parents tools/include/asm %{buildroot}%{_devel_dir}
cp -a --parents tools/include/asm-generic %{buildroot}%{_devel_dir}
cp -a --parents tools/include/linux %{buildroot}%{_devel_dir}
cp -a --parents tools/include/uapi/asm %{buildroot}%{_devel_dir}
cp -a --parents tools/include/uapi/asm-generic %{buildroot}%{_devel_dir}
cp -a --parents tools/include/uapi/linux %{buildroot}%{_devel_dir}
cp -a --parents tools/include/vdso %{buildroot}%{_devel_dir}
cp --parents tools/scripts/utilities.mak %{buildroot}%{_devel_dir}
cp -a --parents tools/lib/subcmd %{buildroot}%{_devel_dir}
cp --parents tools/lib/*.c %{buildroot}%{_devel_dir}
cp --parents tools/objtool/*.[ch] %{buildroot}%{_devel_dir}
cp --parents tools/objtool/Build %{buildroot}%{_devel_dir}
cp --parents tools/objtool/include/objtool/*.h %{buildroot}%{_devel_dir}
cp -a --parents tools/lib/bpf %{buildroot}%{_devel_dir}
cp --parents tools/lib/bpf/Build %{buildroot}%{_devel_dir}

# Architecture-specific headers
cp -a --parents arch/x86/include %{buildroot}%{_devel_dir}
cp -a --parents tools/arch/x86/include %{buildroot}%{_devel_dir}
cp -a include %{buildroot}%{_devel_dir}/include
cp -a sound/soc/sof/sof-audio.h %{buildroot}%{_devel_dir}/sound/soc/sof/ || :
cp -a tools/objtool/objtool %{buildroot}%{_devel_dir}/tools/objtool/
cp -a tools/objtool/fixdep %{buildroot}%{_devel_dir}/tools/objtool/

# x86_64-specific prepare files
cp -a --parents arch/x86/entry/syscalls/syscall_32.tbl %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/entry/syscalls/syscall_64.tbl %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/tools/relocs_32.c %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/tools/relocs_64.c %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/tools/relocs.c %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/tools/relocs_common.c %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/tools/relocs.h %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/purgatory/purgatory.c %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/purgatory/stack.S %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/purgatory/setup-x86_64.S %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/purgatory/entry64.S %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/boot/string.h %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/boot/string.c %{buildroot}%{_devel_dir}
cp -a --parents arch/x86/boot/ctype.h %{buildroot}%{_devel_dir}
cp -a --parents scripts/syscalltbl.sh %{buildroot}%{_devel_dir}
cp -a --parents scripts/syscallhdr.sh %{buildroot}%{_devel_dir}
cp -a --parents tools/arch/x86/include/asm %{buildroot}%{_devel_dir}
cp -a --parents tools/arch/x86/include/uapi/asm %{buildroot}%{_devel_dir}
cp -a --parents tools/objtool/arch/x86/lib %{buildroot}%{_devel_dir}
cp -a --parents tools/arch/x86/lib/ %{buildroot}%{_devel_dir}
cp -a --parents tools/arch/x86/tools/gen-insn-attr-x86.awk %{buildroot}%{_devel_dir}
cp -a --parents tools/objtool/arch/x86/ %{buildroot}%{_devel_dir}

# Clean build artifacts from devel
echo "Cleaning development files..."
find %{buildroot}%{_devel_dir}/scripts \( -iname "*.o" -o -iname "*.cmd" \) -exec rm -f {} +
find %{buildroot}%{_devel_dir}/tools \( -iname "*.o" -o -iname "*.cmd" \) -exec rm -f {} +
touch -r %{buildroot}%{_devel_dir}/Makefile \
    %{buildroot}%{_devel_dir}/include/generated/uapi/linux/version.h \
    %{buildroot}%{_devel_dir}/include/config/auto.conf

# Symlinks for module builds
rm -rf %{buildroot}%{_kernel_dir}/build
ln -s %{_devel_dir} %{buildroot}%{_kernel_dir}/build
ln -s %{_kernel_dir}/build %{buildroot}%{_kernel_dir}/source

# Stub initramfs for disk space estimation
echo "Creating stub initramfs..."
install -dm755 %{buildroot}/boot
dd if=/dev/zero of=%{buildroot}/boot/initramfs-%{_kver}.img bs=1M count=90

# ══════════════════════════════════════════════════════════════════════
# Subpackage: kernel-cachyos-core
# ══════════════════════════════════════════════════════════════════════
%package core
Summary:        CachyOS Linux Kernel — core (vmlinuz)
Group:          System/Kernel
AutoReq:        no
Provides:       kernel = %{_rpmver}
Provides:       kernel-uname-r = %{_kver}
Provides:       multiversion(kernel)
Requires(pre):  coreutils
Requires(pre):  dracut >= 049
Requires(pre):  systemd >= 249
Requires(preun): systemd >= 249
Recommends:     linux-firmware

%description core
The CachyOS Linux kernel image (vmlinuz) for openSUSE.
BORE scheduler, sched-ext, 1000Hz, x86-64-v3 optimized.

%post core
mkdir -p %{_localstatedir}/lib/rpm-state/%{name}
touch %{_localstatedir}/lib/rpm-state/%{name}/installing_core_%{_kver}

%posttrans core
rm -f %{_localstatedir}/lib/rpm-state/%{name}/installing_core_%{_kver}
# Use kernel-install if available (systemd-boot / sdbootutil), else dracut
if [ -x /usr/bin/kernel-install ]; then
    /usr/bin/kernel-install add %{_kver} %{_kernel_dir}/vmlinuz || exit $?
elif [ -x /sbin/dracut ]; then
    /sbin/dracut -f --kver "%{_kver}" || exit $?
fi
if [ ! -e "/boot/symvers-%{_kver}.zst" ]; then
    cp "%{_kernel_dir}/symvers.zst" "/boot/symvers-%{_kver}.zst"
fi

%preun core
if [ -x /usr/bin/kernel-install ]; then
    /usr/bin/kernel-install remove %{_kver} || exit $?
fi

%files core
%license COPYING
%ghost %attr(0600, root, root) /boot/initramfs-%{_kver}.img
%ghost %attr(0644, root, root) /boot/symvers-%{_kver}.zst
%{_kernel_dir}/vmlinuz
%{_kernel_dir}/modules.builtin
%{_kernel_dir}/modules.builtin.modinfo
%{_kernel_dir}/symvers.zst
%{_kernel_dir}/config
%{_kernel_dir}/System.map

# ══════════════════════════════════════════════════════════════════════
# Subpackage: kernel-cachyos-modules
# ══════════════════════════════════════════════════════════════════════
%package modules
Summary:        CachyOS Linux Kernel — modules
Group:          System/Kernel
Provides:       kernel-modules = %{_rpmver}
Provides:       kernel-modules-uname-r = %{_kver}
Provides:       multiversion(kernel)
Requires:       kernel-cachyos-core = %{_rpmver}

%description modules
Kernel modules for the CachyOS Linux kernel.

%post modules
if [ ! -f %{_localstatedir}/lib/rpm-state/%{name}/installing_core_%{_kver} ]; then
    mkdir -p %{_localstatedir}/lib/rpm-state/%{name}
    touch %{_localstatedir}/lib/rpm-state/%{name}/need_to_run_dracut_%{_kver}
fi

%posttrans modules
rm -f %{_localstatedir}/lib/rpm-state/%{name}/need_to_run_dracut_%{_kver}
/sbin/depmod -a %{_kver}
if [ -f %{_localstatedir}/lib/rpm-state/%{name}/need_to_run_dracut_%{_kver} ]; then
    echo "Regenerating initramfs for %{_kver}..."
    if [ -x /sbin/dracut ]; then
        /sbin/dracut -f --kver "%{_kver}" || exit $?
    fi
fi

%files modules
%dir %{_kernel_dir}
%{_kernel_dir}/modules.order
%{_kernel_dir}/build
%{_kernel_dir}/source
%{_kernel_dir}/kernel

# ══════════════════════════════════════════════════════════════════════
# Subpackage: kernel-cachyos-devel
# ══════════════════════════════════════════════════════════════════════
%package devel
Summary:        CachyOS Linux Kernel — development files
Group:          Development/Kernel
Provides:       kernel-devel = %{_rpmver}
Provides:       kernel-devel-uname-r = %{_kver}
AutoReqProv:    no
Requires(pre):  findutils
Requires:       findutils
Requires:       perl
Requires:       libopenssl-devel
Requires:       libelf-devel
Requires:       bison
Requires:       flex
Requires:       make

%if %{_build_lto}
Requires:       clang
Requires:       lld
Requires:       llvm
%else
Requires:       gcc
%endif

%description devel
Kernel headers and build system for building out-of-tree modules
against the CachyOS Linux kernel (e.g., NVIDIA, VirtualBox, ZFS).

%files devel
%{_devel_dir}

# ══════════════════════════════════════════════════════════════════════
# Subpackage: kernel-cachyos-devel-matched
# ══════════════════════════════════════════════════════════════════════
%package devel-matched
Summary:        CachyOS Linux Kernel — matched core + devel meta package
Group:          Development/Kernel
Provides:       kernel-devel-matched = %{_rpmver}
Requires:       kernel-cachyos-core = %{_rpmver}
Requires:       kernel-cachyos-devel = %{_rpmver}

%description devel-matched
Meta package to install matching kernel-cachyos-core and kernel-cachyos-devel.

%files devel-matched

# ══════════════════════════════════════════════════════════════════════
# Main package (meta)
# ══════════════════════════════════════════════════════════════════════
%files

%changelog