path: root/PKGBUILD

### 构建选项
# 将接下来的两个变量设置为非空的任意值，以启用它们

# 通过 nconfig 在构建前调整内核选项
: "${_makenconfig:=""}"

# 仅编译活动模块，以便大大减少构建的模块数和构建时间。

# 为了跟踪您的特定系统/硬件所需的模块，尝试使用 module_db：https://aur.archlinux.org/packages/modprobed-db
# 如果存在，则此 PKGBUILD 会读取保存的数据库
#
# 此wiki页面上的更多信息 ---> https://wiki.archlinux.org/index.php/Modprobed-db
: "${_localmodcfg:=""}"

# 可选择按编号选择一个子架构，或者留空，在构建期间需要用户交互。注意，通用（默认）选项是 40。
#
#  1. AMD Opteron/Athlon64/Hammer/K8 (MK8)
#  2. AMD Opteron/Athlon64/Hammer/K8 with SSE3 (MK8SSE3)
#  3. AMD 61xx/7x50/PhenomX3/X4/II/K10 (MK10)
#  4. AMD Barcelona (MBARCELONA)
#  5. AMD Bobcat (MBOBCAT)
#  6. AMD Jaguar (MJAGUAR)
#  7. AMD Bulldozer (MBULLDOZER)
#  8. AMD Piledriver (MPILEDRIVER)
#  9. AMD Steamroller (MSTEAMROLLER)
#  10. AMD Excavator (MEXCAVATOR)
#  11. AMD Zen (MZEN)
#  12. AMD Zen 2 (MZEN2)
#  13. AMD Zen 3 (MZEN3)
#  14. AMD Zen 4 (MZEN4)
#  15. Intel P4 / older Netburst based Xeon (MPSC)
#  16. Intel Core 2 (MCORE2)
#  17. Intel Atom (MATOM)
#  18. Intel Nehalem (MNEHALEM)
#  19. Intel Westmere (MWESTMERE)
#  20. Intel Silvermont (MSILVERMONT)
#  21. Intel Goldmont (MGOLDMONT)
#  22. Intel Goldmont Plus (MGOLDMONTPLUS)
#  23. Intel Sandy Bridge (MSANDYBRIDGE)
#  24. Intel Ivy Bridge (MIVYBRIDGE)
#  25. Intel Haswell (MHASWELL)
#  26. Intel Broadwell (MBROADWELL)
#  27. Intel Skylake (MSKYLAKE)
#  28. Intel Skylake X (MSKYLAKEX)
#  29. Intel Cannon Lake (MCANNONLAKE)
#  30. Intel Ice Lake (MICELAKE)
#  31. Intel Cascade Lake (MCASCADELAKE)
#  32. Intel Cooper Lake (MCOOPERLAKE)
#  33. Intel Tiger Lake (MTIGERLAKE)
#  34. Intel Sapphire Rapids (MSAPPHIRERAPIDS)
#  35. Intel Rocket Lake (MROCKETLAKE)
#  36. Intel Alder Lake (MALDERLAKE)
#  37. Intel Raptor Lake (MRAPTORLAKE)
#  38. Intel Meteor Lake (MMETEORLAKE)
#  39. Intel Emerald Rapids (MEMERALDRAPIDS)
#  40. Generic-x86-64 (GENERIC_CPU)
#  41. Generic-x86-64-v2 (GENERIC_CPU2)
#  42. Generic-x86-64-v3 (GENERIC_CPU3)
#  43. Generic-x86-64-v4 (GENERIC_CPU4)
#  44. Intel-Native optimizations autodetected by the compiler (MNATIVE_INTEL)
#  45. AMD-Native optimizations autodetected by the compiler (MNATIVE_AMD)
: "${_subarch:=""}"

# 使用当前内核的 .config 文件 启用此选项将使用正在运行的内核的 .config，而不是 ARCH 的默认值。
# 当软件包得到更新而你已经经历了定制配置选项的麻烦时，此选项很有用。
# 当新的内核发布时不推荐使用，但对于软件包的更新依然很方便。
: "${_use_current:=""}"

# 启用 LLVM 编译
: "${_use_llvm_lto:=""}"

# 启用/禁用调试选项
# 如果已在您的 .config 文件中启用调试选项，请将其设置为“y”以启用，设置为“n”以强制禁用，如果为空则忽略调试选项。
: "${_debug:=""}"

### 重要提示：除非您确切知道自己在做什么，否则请不要编辑以下内容。

_major=6.8
_minor=7
_srcname=linux-${_major}
_clr=${_major}.6-1426
_gcc_more_v='20240221.2'
pkgbase=linux-clear-cjktty
pkgver=${_major}.${_minor}
pkgrel=1
pkgdesc='Clear Linux内核,带有cjktty并开启kexec'
arch=('x86_64')
url="https://github.com/clearlinux-pkgs/linux"
license=(GPL-2.0-only)
makedepends=('bc' 'cpio' 'git' 'libelf' 'pahole' 'xmlto')
if [ -n "$_use_llvm_lto" ]; then
	makedepends+=(clang llvm lld python)
fi
options=(!debug !strip)
if [ "$_debug" == "y" ]; then
	options=(!strip)
fi
source=(
	"https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-${_major}.tar.xz"
	"https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-${_major}.tar.sign"
	"https://cdn.kernel.org/pub/linux/kernel/v6.x/patch-${pkgver}.xz"
	"$pkgbase::git+https://github.com/clearlinux-pkgs/linux.git#tag=${_clr}"
	"more-uarches-$_gcc_more_v.tar.gz::https://github.com/graysky2/kernel_compiler_patch/archive/$_gcc_more_v.tar.gz"
	"https://raw.githubusercontent.com/zhmars/cjktty-patches/master/v6.x/cjktty-6.7.patch"
	"config"
)

if [ -n "$_use_llvm_lto" ]; then
	BUILD_FLAGS=(
		LLVM=1
		LLVM_IAS=1
	)
fi

export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"

prepare() {
	# 这个函数负责准备构建环境

	cd ${_srcname}

	### 添加上游补丁
	echo "Add upstream patches"
	patch -Np1 -i ../patch-${pkgver}

	### 设置版本
	echo "Setting version..."
	echo "-$pkgrel" >localversion.10-pkgrel
	echo "${pkgbase#linux}" >localversion.20-pkgname

	### 添加 Clearlinux 修补程序
	for i in $(grep '^Patch' ${srcdir}/$pkgbase/linux.spec |
		grep -Ev '^Patch0132|^Patch0109|^Patch0118|^Patch0113|^Patch0138|^Patch0139|^Patch0147' | sed -n 's/.*: //p'); do
		if [ -n "$_use_llvm_lto" ]; then
			if [ "${i}" == "0162-extra-optmization-flags.patch" ]; then
				continue
			fi
		fi
		echo "Applying patch ${i}..."
		patch -Np1 -i "$srcdir/$pkgbase/${i}"
	done

	### 复制配置
	cp ../config ./.config

	### 添加cjktty补丁
	local src
	for src in "${source[@]}"; do
		src="${src%%::*}"
		src="${src##*/}"
		src="${src%.zst}"
		[[ $src = *.patch ]] || continue
		echo "Applying patch $src..."
		patch -Np1 <"../$src"
	done

	### 设置配置
	#echo "Setting config..."
	#cp -Tf $srcdir/$pkgbase/config ./.config

	### 启用额外选项
	echo "Enable extra options..."

	# 常规设置
	scripts/config --set-str DEFAULT_HOSTNAME archlinux \
		-e IKCONFIG \
		-e IKCONFIG_PROC \
		-u RT_GROUP_SCHED

	# 电源管理和 ACPI 选项
	scripts/config -e ACPI_REV_OVERRIDE_POSSIBLE \
		-e ACPI_TABLE_UPGRADE

	# 虚拟化
	scripts/config -e KVM_SMM

	# 取决于架构的一般选项
	scripts/config -e KPROBES

	# 启用可加载模块支持
	scripts/config -u MODULE_SIG_FORCE \
		-e MODULE_COMPRESS_ZSTD

	# 网络支持
	scripts/config -e NETFILTER_INGRESS

	# 设备驱动程序
	scripts/config -e FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER \
		-e DELL_SMBIOS_SMM \
		-m PATA_JMICRON \
		-E SOUND SOUND_OSS_CORE \
		-e SND_OSSEMUL \
		-M SND_OSSEMUL SND_MIXER_OSS \
		-M SND_MIXER_OSS SND_PCM_OSS \
		-E SND_PCM_OSS SND_PCM_OSS_PLUGINS \
		-m AGP -M AGP AGP_INTEL -M AGP_INTEL AGP_VIA

	# 内核调试 -> 编译时检查和编译器选项 -> 使节 mismatch 错误变为非致命
	scripts/config -e SECTION_MISMATCH_WARN_ONLY

	# 文件系统
	scripts/config -m NTFS3_FS \
		-e NTFS3_LZX_XPRESS \
		-e NTFS3_FS_POSIX_ACL

	scripts/config -m SMB_SERVER \
		-e SMB_SERVER_SMBDIRECT \
		-e SMB_SERVER_CHECK_CAP_NET_ADMIN \
		-e SMB_SERVER_KERBEROS5

	# 安全选项
	scripts/config -e SECURITY_SELINUX \
		-e SECURITY_SELINUX_BOOTPARAM \
		-e SECURITY_SMACK \
		-e SECURITY_SMACK_BRINGUP \
		-e SECURITY_SMACK_NETFILTER \
		-e SECURITY_SMACK_APPEND_SIGNALS \
		-e SECURITY_TOMOYO \
		-e SECURITY_APPARMOR \
		-e SECURITY_YAMA

	# 库子程序
	scripts/config -k -e FONT_TER16x32

	if [ -n "$_use_llvm_lto" ]; then
		scripts/config -d LTO_NONE \
			-e LTO \
			-e LTO_CLANG \
			-e ARCH_SUPPORTS_LTO_CLANG \
			-e ARCH_SUPPORTS_LTO_CLANG_THIN \
			-e HAS_LTO_CLANG \
			-e LTO_CLANG_THIN \
			-e HAVE_GCC_PLUGINS
	fi

	if [ "$_debug" == "y" ]; then
		scripts/config -e DEBUG_INFO \
			-e DEBUG_INFO_BTF \
			-e DEBUG_INFO_DWARF4 \
			-e PAHOLE_HAS_SPLIT_BTF \
			-e DEBUG_INFO_BTF_MODULES
	elif [ "$_debug" == "n" ]; then
		scripts/config -d DEBUG_INFO \
			-d DEBUG_INFO_BTF \
			-d DEBUG_INFO_DWARF4 \
			-d PAHOLE_HAS_SPLIT_BTF \
			-d DEBUG_INFO_BTF_MODULES
	fi

	make ${BUILD_FLAGS[*]} olddefconfig
	diff -u $srcdir/$pkgbase/config .config || :

	# https://github.com/graysky2/kernel_compiler_patch
	# 确保在 olddefconfig 之后应用，以便下一部分
	echo "Patching to enable GCC optimization for other uarchs..."
	patch -Np1 -i "$srcdir/kernel_compiler_patch-$_gcc_more_v/more-uarches-for-kernel-6.8-rc4+.patch"

	if [ -n "$_subarch" ]; then
		# 用户想要一个子级，因此通过 "是 "交互式应用上面定义的选择
		yes "$_subarch" | make ${BUILD_FLAGS[*]} oldconfig
	else
		# 未定义 subarch，因此允许用户选择一个
		make ${BUILD_FLAGS[*]} oldconfig
	fi

	### 可选地使用运行内核的配置
	# 最初由 nous 编写的代码; http://aur.archlinux.org/packages.php?ID=40191
	if [ -n "$_use_current" ]; then
		if [[ -s /proc/config.gz ]]; then
			echo "Extracting config from /proc/config.gz..."
			# modprobe 配置
			zcat /proc/config.gz >./.config
		else
			warning "Your kernel was not compiled with IKCONFIG_PROC!"
			warning "You cannot read the current config!"
			warning "Aborting!"
			exit
		fi
	fi

	### 为 make localmodconfig 加载所需的模块
	# See https://aur.archlinux.org/packages/modprobed-db
	if [ -n "$_localmodcfg" ]; then
		if [ -e $HOME/.config/modprobed.db ]; then
			echo "Running Steven Rostedt's make localmodconfig now"
			make ${BUILD_FLAGS[*]} LSMOD=$HOME/.config/modprobed.db localmodconfig
		else
			echo "No modprobed.db data found"
			exit
		fi
	fi

	make -s kernelrelease >version
	echo "Prepared $pkgbase version $(<version)"

	[[ -z "$_makenconfig" ]] || make ${BUILD_FLAGS[*]} nconfig

	### 保存配置以供以后重复使用
	cp -Tf ./.config "${startdir}/config-${pkgver}-${pkgrel}${pkgbase#linux}"
}

build() {
	# 这个函数负责构建内核

	cd ${_srcname}
	make ${BUILD_FLAGS[*]} all
}

_package() {
	# 这个函数负责打包内核

	pkgdesc="The $pkgdesc kernel and modules"
	depends=('coreutils' 'kmod' 'initramfs')
	optdepends=('wireless-regdb: to set the correct wireless channels of your country'
		'linux-firmware: firmware images needed for some devices'
		'modprobed-db: Keeps track of EVERY kernel module that has ever been probed - useful for those of us who make localmodconfig')
	provides=(VIRTUALBOX-GUEST-MODULES WIREGUARD-MODULE KSMBD-MODULE)
	install=linux.install

	cd $_srcname

	local modulesdir="$pkgdir/usr/lib/modules/$(<version)"

	echo "Installing boot image..."
	# systemd期望这里找到内核以便允许休眠
	# https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
	install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"

	# mkinitcpio 用来命名内核
	echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"

	echo "Installing modules..."
	ZSTD_CLEVEL=19 make ${BUILD_FLAGS[*]} INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
		DEPMOD=/doesnt/exist modules_install # Suppress depmod

	# remove build link
	rm "$modulesdir"/build
}

_package-headers() {
	# 这个函数负责打包内核头文件

	pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
	depends=(pahole)

	cd ${_srcname}
	local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

	echo "Installing build files..."
	install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
		localversion.* version vmlinux
	install -Dt "$builddir/kernel" -m644 kernel/Makefile
	install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
	cp -t "$builddir" -a scripts

	# 启用 STACK_VALIDATION 时需要
	install -Dt "$builddir/tools/objtool" tools/objtool/objtool

	# 启用 DEBUG_INFO_BTF_MODULES 时必须使用
	if [ -f tools/bpf/resolve_btfids/resolve_btfids ]; then
		install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids
	fi

	echo "Installing headers..."
	cp -t "$builddir" -a include
	cp -t "$builddir/arch/x86" -a arch/x86/include
	install -Dt "$builddir/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s

	install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
	install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h

	# https://bugs.archlinux.org/task/13146
	install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h

	# https://bugs.archlinux.org/task/20402
	install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
	install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
	install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h

	# https://bugs.archlinux.org/task/71392
	install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h

	echo "Installing KConfig files..."
	find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

	echo "Removing unneeded architectures..."
	local arch
	for arch in "$builddir"/arch/*/; do
		[[ $arch = */x86/ ]] && continue
		echo "Removing $(basename "$arch")"
		rm -r "$arch"
	done

	echo "Removing documentation..."
	rm -r "$builddir/Documentation"

	echo "Removing broken symlinks..."
	find -L "$builddir" -type l -printf 'Removing %P\n' -delete

	echo "Removing loose objects..."
	find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

	echo "Stripping build tools..."
	local file
	while read -rd '' file; do
		case "$(file -Sib "$file")" in
		application/x-sharedlib\;*) # Libraries (.so)
			strip -v $STRIP_SHARED "$file" ;;
		application/x-archive\;*) # Libraries (.a)
			strip -v $STRIP_STATIC "$file" ;;
		application/x-executable\;*) # Binaries
			strip -v $STRIP_BINARIES "$file" ;;
		application/x-pie-executable\;*) # Relocatable binaries
			strip -v $STRIP_SHARED "$file" ;;
		esac
	done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)

	echo "Stripping vmlinux..."
	strip -v $STRIP_STATIC "$builddir/vmlinux"

	echo "Adding symlink..."
	mkdir -p "$pkgdir/usr/src"
	ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}

pkgname=("$pkgbase" "$pkgbase-headers")
for _p in "${pkgname[@]}"; do
	eval "package_$_p() {
    $(declare -f "_package${_p#$pkgbase}")
    _package${_p#$pkgbase}
  }"
done

sha256sums=('c969dea4e8bb6be991bbf7c010ba0e0a5643a3a8d8fb0a2aaa053406f1e965f3'
	'SKIP'
	'6ef359c3497d90b0a687d1dc2050d0c662f6a72224c8bf6122847002e145ce11'
	'SKIP'
	'1d3ac3e581cbc5108f882fcdc75d74f7f069654c71bad65febe5ba15a7a3a14f'
	'SKIP'
	'SKIP')

validpgpkeys=(
	'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds
	'647F28654894E3BD457199BE38DBBDC86092693E' # Greg Kroah-Hartman
)