%global debug_package %{nil}
%global zen zen1
Name:           linux-zen
Version:        6.7.6
Release:        1%{?dist}
Summary:        Linux kernel and modules with Zen patches

License:        GPL-2.0-only
URL:            http://www.zen-kernel.org/
Source0:        v%{version}-%{zen}.tar.gz

BuildRequires:  gcc, make, flex, bison, ncurses-devel, elfutils-libelf-devel, openssl-devel

%description
Linux kernel and modules with Zen patches (%{version} series) compiled with Clang.

%prep
%setup -q -n zen-kernel-%{version}-%{zen}
cp %{_sourcedir}/.config .config

# Apply all patch files in a shell loop
for patch in %{_sourcedir}/*.patch; do
    echo "Applying $patch"
    patch -p1 < $patch
done

%build
# Set environment variables for Clang and LLVM tools
export CC=clang
export CXX=clang++
export LD=ld.lld
export AR=llvm-ar
export NM=llvm-nm
export STRIP=llvm-strip
export OBJCOPY=llvm-objcopy
export OBJDUMP=llvm-objdump
export HOSTCC=clang
export HOSTCXX=clang++
export HOSTLD=ld.lld
export HOSTAR=llvm-ar
export HOSTNM=llvm-nm
export HOSTSTRIP=llvm-strip
export HOSTOBJCOPY=llvm-objcopy
export HOSTOBJDUMP=llvm-objdump

# Adjust CFLAGS and LDFLAGS to remove unsupported and unused arguments when using Clang
%if "%{__cc}" == "clang"
export CFLAGS=$(echo %{optflags} | sed 's/-ffat-lto-objects//')
export CXXFLAGS=$(echo %{optflags} | sed 's/-ffat-lto-objects//')
export LDFLAGS=$(echo %{__global_ldflags} | sed 's/-specs=\/usr\/lib\/rpm\/redhat\/redhat-hardened-ld//')
%else
export CFLAGS="%{optflags}"
export CXXFLAGS="%{optflags}"
export LDFLAGS="%{__global_ldflags}"
%endif

make LLVM=1 %{?_smp_mflags}

%install
make modules_install INSTALL_MOD_PATH=%{buildroot}

VMLINUX_PATH=%{buildroot}/boot

mkdir -p $VMLINUX_PATH

cd %{_builddir}/zen-kernel-%{version}-zen1/arch/x86/boot

cp bzImage $VMLINUX_PATH/vmlinuz-%{version}-%{zen}.fc39.x86_64

cd %{_builddir}/zen-kernel-%{version}-zen1

cp %{_sourcedir}/.config $VMLINUX_PATH/config-%{version}-%{zen}.fc39.x86_64

make headers_install INSTALL_HDR_PATH=%{buildroot}/usr/include

%files
/boot/vmlinuz-%{version}-%{zen}.fc39.x86_64
/boot/config-%{version}-%{zen}.fc39.x86_64
/lib/modules/*
/usr/include/*
/usr/src/kernels/%{version}-%{zen}


%changelog
* Fri Jan 27 2024 Wizzard <rich@bandaholics.cash>
- Initial package version