jmboris voidlinux templates | kernel CachyOS 6.18.X Series

Linux 6.18-cachyos-rt-bore - Void linux template and binaries

Binaries and template for VoidLinux

DISCLAIMER - This template , binaries and instructions are for educational / testing pourposes.

I haven't made any benhmark or anything , I made it for fun and learning . Use it at your own risk.

Linux Version 6.18.5

Linux Kernel 6.18 with patches from CachyOS template. Also the kernel and kernel headers binaries.

Because it is rt-bore version we need 3 patches fom CachyOS

0001-cachyos-base-all.patch
0002-bore-cachy.patch
0003-rt-i915.patch

Also I applied the configuration to the .config file to the kernel , and it is done by adding x86_64-dotconfig-custom inside the files folder.

it was made by copying the original x86_64-dotconfig from void and adding lines to use the modification for Cachy

# cachy rt bore
#
CONFIG_GENERIC_CPU=y
CONFIG_IO_URING_ZCRX=y
CONFIG_X86_NATIVE_CPU=n
CONFIG_X86_64_VERSION=3
CONFIG_SCHED_BORE=y
CONFIG_PREEMPT_RT=y
CONFIG_ARCH_SUPPORTS_CFI_CLANG=y
CONFIG_CFI_CLANG=y
CONFIG_CFI_AUTO_DEFAULT=y
CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL=n
CONFIG_HZ_PERIODIC=n
CONFIG_NO_HZ_IDLE=n
CONTEXT_TRACKING_FORCE=n
CONFIG_NO_HZ_FULL_NODEF=y
CONFIG_CONTEXT_TRACKING=y
CONFIG_PREEMPT_DYNAMIC=n
CONFIG_PREEMPT_NONE=n
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=n
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=n
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y

The srcpkgs structure is like this :

/void-packages/srcpkgs/linux6.18-cachyos-rt-bore$ tree

├── files
│   ├── arm64-dotconfig
│   ├── config-trash
│   ├── i386-dotconfig
│   ├── mv-debug
│   ├── x86_64-dotconfig
│   └── x86_64-dotconfig-custom
├── patches
│   ├── 0001-cachyos-base-all.patch
│   ├── 0002-bore-cachy.patch
│   ├── 0003-rt-i915.patch
│   ├── fix-musl-btf-ids.patch
│   ├── fix-musl-objtool.patch
│   ├── fixdep-largefile.patch
│   └── x13s-camera.patch
└── template

kernel CachyOS 6.18.X Series

January 15 2026

Available for download :

For AMD zen3

6.18.5 linux6.18-cachyos-rt-bore-zen3-6.18.5_1
6.18.5-headers linux6.18-cachyos-rt-bore-headers-zen3-6.18.5_1
Souce Files for 6.18.5 AMD zen3 files ( srcpkgs folder )
6.18.4 linux6.18-cachyos-rt-bore-zen3-6.18.4_1
6.18.4-headers linux6.18-cachyos-rt-bore-headers-zen3-6.18.4_1

For Generic CPU (x86_64)

6.18.4 linux6.18-cachyos-rt-bore-6.18.4_1
6.18.4-headers linux6.18-cachyos-rt-bore-headers-6.18.4_1
Souce Files for 6.18.4 Generic CPU files ( srcpkgs folder )

Developer
https://kernel.org/

https://github.com/CachyOS/linux-cachyos/tree/master/linux-cachyos-rt-bore

Cachy Os Patches
https://github.com/CachyOS/kernel-patches/tree/master

template download


  
    
# Template file for 'linux6.18-cachyos-rt-bore-zen3'
pkgname=linux6.18-cachyos-rt-bore-zen3
version=6.18.5
revision=1
_xanmod=1
_style=-cachyos-rt-bore-zen3
#wrksrc="linux-${version}-xanmod${_xanmod}"


short_desc="Linux AMD zen3 BORE-RT + Cachy Sauce Kernel by CachyOS with other patches and improvements (${version%.*} series)"
maintainer="JuanMa - Linuxnauta <numblinux@gmail.com>"
license="GPL-2.0-only"
homepage="https://www.kernel.org"

case "${version##*.}" in
rc*) distfiles="https://git.kernel.org/torvalds/t/linux-${version%.*}-${version##*.}.tar.gz" ;;
*)
	distfiles="${KERNEL_SITE}/kernel/v${version%%.*}.x/linux-${version%.*}.tar.xz"
	if [ "${version##*.}" != 0 ]; then
		distfiles+=" ${KERNEL_SITE}/kernel/v${version%%.*}.x/patch-${version}.xz"
		skip_extraction="patch-${version}.xz"
	fi
esac

checksum="9106a4605da9e31ff17659d958782b815f9591ab308d03b0ee21aad6c7dced4b
 c54be9cad90fc56c00a05db6a16685b6ad3db56ea823d35cf63c6150e80002e2"

# #Testing cachyos directly from kernel official site
# distfiles="${KERNEL_SITE}/kernel/v${version%%.*}.x/linux-${version%.*}.tar.xz"
# checksum=9106a4605da9e31ff17659d958782b815f9591ab308d03b0ee21aad6c7dced4b

python_version=3

# XXX Restrict archs until a proper <arch>-dotconfig is available in FILESDIR.
archs="x86_64* i686* aarch64*"

nodebug=yes  # -dbg package is generated below manually
nostrip=yes
noverifyrdeps=yes
noshlibprovides=yes
preserve=yes

hostmakedepends="tar xz bc elfutils-devel flex gmp-devel kmod libmpc-devel
 pkg-config openssl-devel perl uboot-mkimage cpio pahole python3 zstd"

# Original void
_kernver="${version/rc/0-rc}_${revision}"

# Custom if patched
_kernver="${version}_${revision}${_style}"

# Custom if directly downloaded from xanmod
#_kernver="${version}_${revision}${_style}${_xanmod}"

triggers="kernel-hooks"
kernel_hooks_version="${_kernver}"

# These files could be modified when an external module is built.
mutable_files="
 /usr/lib/modules/${_kernver}/modules.builtin.bin
 /usr/lib/modules/${_kernver}/modules.builtin.alias.bin
 /usr/lib/modules/${_kernver}/modules.softdep
 /usr/lib/modules/${_kernver}/modules.dep
 /usr/lib/modules/${_kernver}/modules.dep.bin
 /usr/lib/modules/${_kernver}/modules.symbols
 /usr/lib/modules/${_kernver}/modules.symbols.bin
 /usr/lib/modules/${_kernver}/modules.alias
 /usr/lib/modules/${_kernver}/modules.alias.bin
 /usr/lib/modules/${_kernver}/modules.devname"

# reproducible build
export KBUILD_BUILD_TIMESTAMP=$(LC_ALL=C date -ud @${SOURCE_DATE_EPOCH:-0})
export KBUILD_BUILD_USER=linuxnauta
export KBUILD_BUILD_HOST=cachyos

#for Ryzen 5 - linuxnauta
export KCFLAGS=' -march=znver3'
export KCPPFLAGS=' -march=znver3'


if [ "$CROSS_BUILD" ]; then
	_cross="CROSS_COMPILE=${XBPS_CROSS_TRIPLET}-"
fi

post_extract() {
	# doing this in post_extract instead of *_patch, so that ./xbps-src extract
	# will have the actual kernel release source code and additional patches
	# can be applied with ./xbps-src patch in the next step.
	if [ ! -f $XBPS_SRCDISTDIR/$pkgname-$version/patch-${version}.xz ]; then
		return
	fi
	xzcat $XBPS_SRCDISTDIR/$pkgname-$version/patch-${version}.xz |
		patch -sNp1 -F0
}

post_patch() {
	# avoid the strip wrapper, its used to copy the objects to a new location
	# and required to avoid absolute relocations.
	vsed -e "s|\$(STRIP) \(--strip-debug -o \$@ \$<;\)|/usr/bin/${STRIP} \1|" -i drivers/firmware/efi/libstub/Makefile

	# parallel pahole crashes on i686, do one job for now
	vsed -i "s/\(\$(pahole-flags-y)\)/\1 --jobs=1/" -i scripts/Makefile.btf
}

do_configure() {
	# If there's a file called <arch>-dotconfig, use it to
	# configure the kernel; otherwise use arch defaults and all stuff
	# as modules (allmodconfig).
	local arch subarch

	case "$XBPS_TARGET_MACHINE" in
		i686*) arch=i386;;
		x86_64*) arch=x86_64;;
		arm*) arch=arm;;
		aarch64*) arch=arm64;;
		ppc64le*) arch=powerpc; subarch=ppc64le;;
		ppc64*) arch=powerpc; subarch=ppc64;;
		ppc*) arch=powerpc; subarch=ppc;;
		mips*) arch=mips;;
		riscv64*) arch=riscv;;
	esac

	if [ -f ${FILESDIR}/${subarch:-$arch}-dotconfig-custom ]; then
		msg_normal "Detected a custom .config file for your arch, using it.\n"
		cp -f ${FILESDIR}/${subarch:-$arch}-dotconfig-custom .config
		make ${makejobs} ARCH=$arch ${_cross} oldconfig
	elif [ -f ${FILESDIR}/${subarch:-$arch}-dotconfig ]; then
		msg_normal "Detected a .config file for your arch, using it.\n"
		cp -f ${FILESDIR}/${subarch:-$arch}-dotconfig .config
		make ${makejobs} ARCH=$arch ${_cross} oldconfig
	fi

	# Always use our revision to CONFIG_LOCALVERSION to match our pkg version.
	sed -i -e "s|^\(CONFIG_LOCALVERSION=\).*|\1\"_${revision}\"|" .config
}
do_build() {
	local arch _args

	case "$XBPS_TARGET_MACHINE" in
		i686*) _args="bzImage modules"; arch=i386;;
		x86_64*) _args="bzImage modules"; arch=x86_64;;
		arm*) _args="zImage modules dtbs"; arch=arm;;
		aarch64*) _args="Image modules dtbs"; arch=arm64;;
		ppc*) _args="zImage modules"; arch=powerpc;;
		mips*) _args="uImage modules dtbs"; arch=mips;;
		riscv64*) _args="Image modules dtbs"; arch=riscv;;
	esac
	export LDFLAGS=
	make ARCH=$arch ${_cross} ${makejobs} prepare
	#working for patched version
	make ARCH=$arch ${_cross} ${makejobs} ${_args} LOCALVERSION=${_style}

	#for void or non patched version
	#make ARCH=$arch ${_cross} ${makejobs} ${_args}
}

do_install() {
	local arch subarch _args hdrdest

	case "$XBPS_TARGET_MACHINE" in
		i686*) arch=x86; subarch=i386;;
		x86_64*) arch=x86; subarch=x86_64;;
		arm*) arch=arm;;
		aarch64*) arch=arm64;;
		ppc*) arch=powerpc;;
		mips*) arch=mips;;
		riscv*) arch=riscv;;
	esac

	# Run depmod after compressing modules - makes depmod.sh a noop
	sed -i '2iexit 0' scripts/depmod.sh
	vmkdir usr/lib
	ln -sf usr/lib/ ${DESTDIR}

	# Install kernel, firmware and modules
	make ${makejobs} ARCH=${subarch:-$arch} INSTALL_MOD_PATH=${DESTDIR} ${_cross} modules_install

	hdrdest=${DESTDIR}/usr/src/kernel-headers-${_kernver}

	vinstall .config 644 boot config-${_kernver}
	vinstall System.map 644 boot System.map-${_kernver}

	case "$arch" in
		x86)
			vinstall arch/x86/boot/bzImage 644 boot vmlinuz-${_kernver}
			;;
		arm)
			vinstall arch/arm/boot/zImage 644 boot
			make ${makejobs} ARCH=${subarch:-$arch} INSTALL_DTBS_PATH=${DESTDIR}/boot/dtbs/dtbs-${_kernver} ${_cross} dtbs_install
			;;
		arm64)
			vinstall arch/arm64/boot/Image 644 boot vmlinux-${_kernver}
			make ${makejobs} ARCH=${subarch:-$arch} INSTALL_DTBS_PATH=${DESTDIR}/boot/dtbs/dtbs-${_kernver} ${_cross} dtbs_install
			;;
		powerpc)
			# zImage on powerpc is useless as it won't load initramfs
			# raw vmlinux is huge, and this is nostrip, so do it manually
			vinstall vmlinux 644 boot vmlinux-${_kernver}
			/usr/bin/$STRIP ${DESTDIR}/boot/vmlinux-${_kernver}
			;;
		mips)
			vinstall arch/mips/boot/uImage.bin 644 boot uImage-${_kernver}
			make ${makejobs} ARCH=${subarch:-$arch} INSTALL_DTBS_PATH=${DESTDIR}/boot/dtbs/dtbs-${_kernver} ${_cross} dtbs_install
			;;
		riscv)
			vinstall arch/riscv/boot/Image 644 boot vmlinux-${_kernver}
			make ${makejobs} ARCH=${subarch:-$arch} INSTALL_DTBS_PATH=${DESTDIR}/boot/dtbs/dtbs-${_kernver} ${_cross} dtbs_install
			;;
	esac

	# Switch to /usr.
	vmkdir usr

	echo ${DESTDIR}/usr/lib/modules/${_kernver}
	cd ${DESTDIR}/usr/lib/modules/${_kernver}
	rm -f source build
	ln -sf ../../../src/kernel-headers-${_kernver} build

	cd ${wrksrc}
	# Install required headers to build external modules
	install -Dm644 Makefile ${hdrdest}/Makefile
	install -Dm644 Kbuild ${hdrdest}/Kbuild
	install -Dm644 kernel/Makefile ${hdrdest}/kernel/Makefile
	install -Dm644 .config ${hdrdest}/.config
	for file in $(find . -name Kconfig\*); do
		mkdir -p ${hdrdest}/$(dirname $file)
		install -Dm644 $file ${hdrdest}/${file}
	done
	for file in $(find arch/${subarch:-$arch} scripts -name module.lds -o -name Kbuild.platforms -o -name Platform); do
		mkdir -p ${hdrdest}/$(dirname $file)
		install -Dm644 $file ${hdrdest}/${file}
	done
	mkdir -p ${hdrdest}/include
	# Remove firmware stuff provided by the "linux-firmware" pkg.
	rm -rf ${DESTDIR}/usr/lib/firmware

	for i in acpi asm-generic clocksource config crypto drm generated linux vdso \
		math-emu media net pcmcia scsi sound trace uapi video xen dt-bindings hyperv keys; do
		if [ -d include/$i ]; then
			cp -a include/$i ${hdrdest}/include
		fi
	done

	cd ${wrksrc}
	mkdir -p ${hdrdest}/arch/${arch}
	cp -a arch/${arch}/include ${hdrdest}/arch/${arch}

	# needed for mv-debug
	cp scripts/sign-file "${XBPS_WRAPPERDIR}"

	# Remove helper binaries built for host,
	# if generated files from the scripts/ directory need to be included,
	# they need to be copied to ${hdrdest} before this step
	if [ "$CROSS_BUILD" ]; then
		make ${makejobs} ARCH=${subarch:-$arch} ${_cross} _mrproper_scripts
		# remove host specific objects as well
		find scripts -name '*.o' -delete
	fi

	# Copy files necessary for later builds, like nvidia and vmware
	cp Module.symvers ${hdrdest}
	cp -a scripts ${hdrdest}
	mkdir -p ${hdrdest}/security/selinux
	cp -a security/selinux/include ${hdrdest}/security/selinux
	mkdir -p ${hdrdest}/tools/include
	cp -a tools/include/tools ${hdrdest}/tools/include
	if [ -d "arch/${arch}/tools" ]; then
		cp -a "arch/${arch}/tools" "${hdrdest}/arch/${arch}"
	fi
	cp -a kernel/time/timeconst.bc "${hdrdest}/kernel/time"
	cp -a kernel/bounds.c "${hdrdest}/kernel"
	mkdir -p "${hdrdest}/arch/x86/entry/syscalls"
	cp -a arch/x86/entry/syscalls/syscall_32.tbl "${hdrdest}/arch/x86/entry/syscalls"

	mkdir -p ${hdrdest}/arch/${arch}/kernel
	cp arch/${arch}/Makefile ${hdrdest}/arch/${arch}
	if [ "$subarch" = "i386" ]; then
		mkdir -p ${hdrdest}/arch/x86
		cp arch/x86/Makefile_32.cpu ${hdrdest}/arch/x86
	fi
	if [ "$arch" = "x86" ]; then
		mkdir -p ${hdrdest}/arch/x86/kernel
		cp arch/x86/kernel/asm-offsets.s ${hdrdest}/arch/x86/kernel
	elif [ "$arch" = "arm64" ]; then
		mkdir -p ${hdrdest}/arch/arm64/kernel
		cp arch/arm64/kernel/asm-offsets.s ${hdrdest}/arch/arm64/kernel
		cp -a arch/arm64/kernel/vdso ${hdrdest}/arch/arm64/kernel/
	fi

	# add headers for lirc package
	# pci
	for i in bt8xx cx88 saa7134; do
		mkdir -p ${hdrdest}/drivers/media/pci/${i}
		cp -a drivers/media/pci/${i}/*.h ${hdrdest}/drivers/media/pci/${i}
	done
	# usb
	for i in em28xx pwc; do
		mkdir -p ${hdrdest}/drivers/media/usb/${i}
		cp -a drivers/media/usb/${i}/*.h ${hdrdest}/drivers/media/usb/${i}
	done
	# i2c
	mkdir -p ${hdrdest}/drivers/media/i2c
	cp drivers/media/i2c/*.h ${hdrdest}/drivers/media/i2c
	for i in cx25840; do
		mkdir -p ${hdrdest}/drivers/media/i2c/${i}
		cp -a drivers/media/i2c/${i}/*.h ${hdrdest}/drivers/media/i2c/${i}
	done

	# Add md headers
	mkdir -p ${hdrdest}/drivers/md
	cp drivers/md/*.h ${hdrdest}/drivers/md

	# Add inotify.h
	mkdir -p ${hdrdest}/include/linux
	cp include/linux/inotify.h ${hdrdest}/include/linux

	# Add wireless headers
	mkdir -p ${hdrdest}/net/mac80211/
	cp net/mac80211/*.h ${hdrdest}/net/mac80211

	# add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
	mkdir -p ${hdrdest}/drivers/media/dvb-frontends
	cp drivers/media/dvb-frontends/lgdt330x.h \
		${hdrdest}/drivers/media/dvb-frontends/
	cp drivers/media/i2c/msp3400-driver.h ${hdrdest}/drivers/media/i2c/

	# add dvb headers
	mkdir -p ${hdrdest}/drivers/media/usb/dvb-usb
	cp drivers/media/usb/dvb-usb/*.h ${hdrdest}/drivers/media/usb/dvb-usb/
	mkdir -p ${hdrdest}/drivers/media/dvb-frontends
	cp drivers/media/dvb-frontends/*.h ${hdrdest}/drivers/media/dvb-frontends/
	mkdir -p ${hdrdest}/drivers/media/tuners
	cp drivers/media/tuners/*.h ${hdrdest}/drivers/media/tuners/

	# Add xfs and shmem for aufs building
	mkdir -p ${hdrdest}/fs/xfs/libxfs
	mkdir -p ${hdrdest}/mm
	cp fs/xfs/libxfs/xfs_sb.h ${hdrdest}/fs/xfs/libxfs/xfs_sb.h

	# Add objtool binary, needed to build external modules with dkms
	case "$XBPS_TARGET_MACHINE" in
		x86_64*)
			mkdir -p ${hdrdest}/tools/objtool
			cp tools/objtool/objtool ${hdrdest}/tools/objtool
			;;
	esac

	# Extract debugging symbols and compress modules
	msg_normal "$pkgver: extracting debug info and compressing modules, please wait...\n"
	install -Dm644 vmlinux ${DESTDIR}/usr/lib/debug/boot/vmlinux-${_kernver}
	(
	cd ${DESTDIR}
	export DESTDIR
	export SIGN_FILE="${XBPS_WRAPPERDIR}/sign-file sha512 ${wrksrc}/certs/signing_key.pem ${wrksrc}/certs/signing_key.x509"
	find ./ -name '*.ko' -print0 | \
		xargs -0r -n1 -P ${XBPS_MAKEJOBS} ${FILESDIR}/mv-debug
	)
	# ... and run depmod again.
	depmod -b ${DESTDIR}/usr -F System.map ${_kernver}
	rm -f ${DESTDIR}/lib
}

linux6.18-cachyos-rt-bore-zen3-headers_package() {
	preserve=yes
	nostrip=yes
	noshlibprovides=yes
	short_desc+=" - source headers for 3rd party modules"
	pkg_install() {
		vmove usr/src
		vmove usr/lib/modules/${_kernver}/build
	}
}

# linux6.18-dbg_package() {
# 	preserve=yes
# 	nostrip=yes
# 	noverifyrdeps=yes
# 	noshlibprovides=yes
# 	repository=debug
# 	short_desc+=" - debugging symbols"
# 	pkg_install() {
# 		vmove usr/lib/debug
# 		vmove "boot/System.map-${_kernver}"
# 	}
# }