# Maintainer: Eric Naim <dnaim@cachyos.org>

# Fedora bits
%global _default_patch_fuzz 2
%define _build_id_links none
%define _disable_source_fetch 0
%define debug_package %{nil}
%undefine _auto_set_build_flags
%undefine _include_frame_pointers

# Linux Kernel Versions
%define _basekver 6.12
%define _stablekver 9
%define _rpmver %{version}-%{release}
%define _kver %{_rpmver}.%{_arch}

# Define variables for directory paths
# to be used during packaging
%define _kernel_dir lib/modules/%{_kver}
%define _devel_dir usr/src/kernels/%{_kver}

Name:           kernel-cachyos
Summary:        Linux BORE Cachy Sauce Kernel by CachyOS with other patches and improvements.
Version:        %{_basekver}.%{_stablekver}
Release:        cachyos3%{?dist}
License:        GPL-2.0-Only
URL:            https://cachyos.org

Requires:       kernel-core-uname-r = %{_kver}
Requires:       kernel-modules-uname-r = %{_kver}
Requires:       kernel-modules-core-uname-r = %{_kver}
Provides:       installonlypkg(kernel)
Provides:       kernel-uname-r = %{_kver}

BuildRequires:  bc
BuildRequires:  bison
BuildRequires:  cpio
BuildRequires:  dwarves
BuildRequires:  elfutils-devel
BuildRequires:  flex
BuildRequires:  gettext-devel
BuildRequires:  kernel-rpm-macros
BuildRequires:  kmod
BuildRequires:  make
BuildRequires:  openssl
BuildRequires:  openssl-devel
BuildRequires:  perl-Carp
BuildRequires:  perl-devel,
BuildRequires:  perl-generators
BuildRequires:  perl-interpreter
BuildRequires:  python3-devel
BuildRequires:  python3-pyyaml
BuildRequires:  redhat-rpm-config
BuildRequires:  tar
BuildRequires:  xz
BuildRequires:  zstd

BuildRequires:  gcc

Source0:    https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-%{version}.tar.xz
#Source0:    https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-%_basekver.tar.xz
Source1:    https://raw.githubusercontent.com/CachyOS/linux-cachyos/master/linux-cachyos/config

Patch0: https://raw.githubusercontent.com/CachyOS/kernel-patches/master/%{_basekver}/all/0001-cachyos-base-all.patch
Patch1: https://raw.githubusercontent.com/CachyOS/kernel-patches/master/%{_basekver}/sched/0001-bore-cachy.patch

%description
    The meta package for %{name}.


%prep
    %setup -q -n linux-%{version}
    %autopatch -p1 -v -M 9

    cp %{SOURCE1} .config

    # Must always enable configs
    scripts/config -e CACHY
    scripts/config -e SCHED_BORE
    scripts/config -d HZ_300
    scripts/config -e HZ_1000
    scripts/config --set-val HZ 1000
    scripts/config --set-val X86_64_VERSION 3
    scripts/config -d HZ_PERIODIC
    scripts/config -d NO_HZ_IDLE
    scripts/config -d CONTEXT_TRACKING_FORCE
    scripts/config -e NO_HZ_FULL_NODEF
    scripts/config -e NO_HZ_FULL
    scripts/config -e NO_HZ
    scripts/config -e NO_HZ_COMMON
    scripts/config -e CONTEXT_TRACKING
    scripts/config --set-str CONFIG_LSM lockdown,yama,integrity,selinux,bpf,landlock

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

%build
    make %{?_smp_mflags} EXTRAVERSION=-%{release}.%{_arch} all
    make -C tools/bpf/bpftool vmlinux.h feature-clang-bpf-co-re=1

%install
    install -Dm644 "$(make -s image_name)" "%{buildroot}/%{_kernel_dir}/vmlinuz"
    zstdmt -19 < Module.symvers > %{buildroot}/%{_kernel_dir}/symvers.zst

    # Modules
    ZSTD_CLEVEL=19 make INSTALL_MOD_PATH="%{buildroot}" INSTALL_MOD_STRIP=1 DEPMOD=/doesnt/exist modules_install

    # -devel files
    install -Dt %{buildroot}/%{_devel_dir} -m644 .config Makefile Module.symvers System.map vmlinux tools/bpf/bpftool/vmlinux.h
    cp .config %{buildroot}/%{_kernel_dir}/config
    cp System.map %{buildroot}/%{_kernel_dir}/System.map
    cp --parents `find  -type f -name "Makefile*" -o -name "Kconfig*"` %{buildroot}/%{_devel_dir}
    ln -sf %{buildroot}/%{_devel_dir} %{buildroot}/%{_kernel_dir}/build

%package core
Summary:        Linux BORE Cachy Sauce Kernel by CachyOS with other patches and improvements
Provides:       kernel-core-uname-r = %{_kver}
Provides:       installonlypkg(kernel)
Requires:       kernel-modules-uname-r = %{_kver}
Requires:       coreutils
Requires:       dracut
Requires:       kmod

%description core
    The kernel package contains the Linux kernel (vmlinuz), the core of any
    Linux operating system.  The kernel handles the basic functions
    of the operating system: memory allocation, process allocation, device
    input and output, etc.

%files core
    %dir /%{_kernel_dir}
    /%{_kernel_dir}/vmlinuz
    /%{_kernel_dir}/modules.builtin
    /%{_kernel_dir}/modules.builtin.modinfo
    /%{_kernel_dir}/symvers.zst
    /%{_kernel_dir}/config
    /%{_kernel_dir}/System.map

%package modules
Summary:        Kernel modules package for %{name}.
Provides:       kernel-modules-uname-r = %{_kver}
Provides:       kernel-modules-core-uname-r = %{_kver}
Provides:       installonlypkg(kernel-module)
Requires:       kernel-uname-r = %{_kver}

%description modules
    This package provides kernel modules for the %{name}-core kernel package.

%files modules
    /%{_kernel_dir}/modules.order
    /%{_kernel_dir}/kernel

%package devel
Summary:        Development package for building kernel modules to match %{name}
Provides:       kernel-devel-uname-r = %{_kver}
Provides:       installonlypkg(kernel)
AutoReqProv:    no
Requires(pre):  findutils
Requires:       findutils
Requires:       perl-interpreter
Requires:       openssl-devel
Requires:       elfutils-libelf-devel
Requires:       bison
Requires:       flex
Requires:       make
Requires:       gcc

%description devel
    This package provides kernel headers and makefiles sufficient to build modules against %{name}.

%files devel
    /%{_devel_dir}
    /%{_kernel_dir}/build

%files