summarylogtreecommitdiffstats
path: root/PKGBUILD
blob: 8ec6933b81f4961fdbd83337132199282e92b617 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
# Maintainer: Matt Parnell/ilikenwf <parwok@gmail.com>
# Original PKGBUILD Contributor: Patrick Bartels <p4ddy.b@gmail.com>
# Thanks to Bregol
pkgname="linux-zen-git"
pkgver=5.9.1+951349+g0573df1b6cbb
_kernver=4.19.0+783746+g54d1f99f63e9
pkgdesc="Featureful kernel including various new features, code and optimizations to better suit desktops"
url="https://github.com/damentz/zen-kernel"
license=("GPL2")
makedepends=("git")
true && pkgbase="linux-zen-git"
true && pkgname=("linux-zen-git" "linux-zen-git-headers")
arch=("x86_64")
conflicts=("linux-zen")
provides=("linux-zen")
pkgrel=1
options=("!strip")
source=("linux-zen.conf"
        "linux-zen.preset"
        'git://github.com/damentz/zen-kernel.git#branch=5.9/master'
        'allow-disable-msr-lockdown.patch')
sha256sums=('6373073ad943e068478ef1373be4eb2a7e473da8743d946f1f50cd364685ab87'
            '18fe6b2664a9a740544c4cb990efe5ec933d6e64caf9e5d0a6ced92af0027c2d'
            'SKIP'
            'd19b97eb71b00d750c76aaf4bb2c4f783bebdfd36eb262219214e450c891a41d')

_CORES=1

# compress the modules or not
_compress="y"

# don't compress the package - we're just going to uncompress during install in a moment
PKGEXT='.pkg.tar'

prepare() {
	cd "${srcdir}/zen-kernel"
	
	# Number of CPU Cores
	_CORES=$(cat /proc/cpuinfo|grep processor|wc -l)
	if [ $_CORES -lt 1 ]; then
		_CORES=2
	fi
	
	git reset --hard
}

pkgver() {
	cd "${srcdir}/zen-kernel"	
	eval $(grep -o "^\(VERSION\|PATCHLEVEL\|SUBLEVEL\) = [0-9a-zA-Z_-]\+" Makefile | tr -d \ )
	printf "%s.%s.%s+%s+g%s" $VERSION $PATCHLEVEL $SUBLEVEL "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
}

build() {
	cd "${srcdir}/zen-kernel"
		
	# don't run depmod on 'make install'. We'll do this ourselves in packaging
	sed -i '2iexit 0' scripts/depmod.sh

	if [ ! -d "${srcdir}/build" ]; then
		msg2 "Creating build directory..."
		mkdir -p "${srcdir}/build"
	else
		if [ -f "${srcdir}/build/.config" ]; then
			msg "Cleaning build directory, and backing up kernel config to srcdir/zen-config-bak..."
			
			cp "${srcdir}/build/.config" "${srcdir}/zen-config-bak"
			
			rm -rf "${srcdir}/build"
						
			cd "${srcdir}/zen-kernel"
			make clean &> /dev/null
			make mrproper &> /dev/null
			
			make -C "${srcdir}/zen-kernel/" O="${srcdir}/build" defconfig > /dev/null
						
			msg "Using backed up config from previous build directory."
			cp "${srcdir}/zen-config-bak" "${srcdir}/build/.config"
		fi
	fi

	if [ ! -f "${srcdir}/build/.config" ]; then
		if [ ! -f "${srcdir}/../zen-config" ]; then
			msg2 "Creating default config..."
			make -C "${srcdir}/zen-kernel/" O="${srcdir}/build" defconfig > /dev/null

			warning "This package does not ship a kernel config."

			plain   ""
			warning "Thus it is up to you to create a one that fits your needs."
			warning "Navigate to '${srcdir}/build'"
			warning "and either run 'make menuconfig' or if you want to use an existing config,"
			warning "save it as '.config' and run 'make oldconfig' in order to update it."
			warning "You could also grab the one used for the mainline zen-kernel package from "
			warning "https://raw.githubusercontent.com/archlinux/svntogit-packages/packages/linux-zen/trunk/config "
			warning "Having done that you can run 'makepkg' again."
			plain   ""

			return 1
		else
			msg "Using saved zen-config file in build root."
			cp "${srcdir}/../zen-config" "${srcdir}/build/.config"
		fi
	fi

	msg "Allowing disable of MSR in lockdown mode to allow undervolting and prevent false positives for spectre-meltdown-checker..."
	patch -Np1 -i "${srcdir}/allow-disable-msr-lockdown.patch"

	msg2 "Updating output directory Makefile..."
	make -C "${srcdir}/zen-kernel/" O="${srcdir}/build" outputmakefile

	warning "Press ENTER if you want to build the kernel or CTRL+C to abort..."
	read
	
	cd "${srcdir}/build"

	msg2 "Building kernel..."; make -j $_CORES bzImage
	msg2 "Building modules..."; make -j $_CORES modules
}

package_linux-zen-git() {
	depends=("coreutils" "linux-firmware" "kmod" "mkinitcpio>=0.5.20")
	provides=("linux-zen" "linux-zen-git")
	optdepends=("linux-zen-git-headers: to build third party modules such as NVIDIA drivers or OSSv4"
	            "crda: to set the correct wireless channels of your country")
	backup=(etc/mkinitcpio.d/linux-zen.conf)
	install=linux-zen.install

	msg2 "Determining kernel name..."
	cd "${srcdir}/build"
	_kernver="$(make kernelrelease -s)"
	msg2 "Kernel release name is: $_kernver"

	cd "${srcdir}/build"
	mkdir -p "$pkgdir/usr/lib"

	cd "${srcdir}/build"

	msg2 "Installing kernel image..."
	install -D -m644 "arch/x86/boot/bzImage" "$pkgdir/boot/vmlinuz-linux-zen"

	msg2 "Installing modules (and firmware files)..."
	make INSTALL_MOD_PATH="$pkgdir" modules_install

	if [ -d "$pkgdir/lib/firmware" ]; then
		msg2 "Removing firmware files..."
		rm -r "$pkgdir/lib/firmware"
	fi
	
	if [ $_compress = "y" ]; then
		msg2 "Compressing kernel modules with gzip..."
		find "${pkgdir}" -name '*.ko' -exec gzip -9 {} \;
	fi
	
	# make room for external modules
	if [ -d "${pkgdir}/usr/lib/modules/extramodules-*" ]; then
		rmdir "${pkgdir}/usr/lib/modules/extramodules-*" &> /dev/null
	fi

	# add real version for building modules and running depmod from post_install/upgrade
	mkdir -p "${pkgdir}/usr/lib/modules/extramodules-${_kernver}"
	echo "${_kernver}" > "${pkgdir}/usr/lib/modules/extramodules-${_kernver}/version"
	
	# symlink extra
	mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}"
	cd "${pkgdir}/usr/lib/modules/${_kernver}"
	ln -s "../extramodules-${_kernver}" "./extramodules"

	cd "${srcdir}/build"

	msg2 "Removing links to source and build directory..."
	rm "$pkgdir/lib/modules/$_kernver/"{build,source}

	msg2 "Updating kernel version in install script..."
	sed -i "s/_kernel_version=.*/_kernel_version=$_kernver/" \
		"$startdir/linux-zen.install"

	msg2 "Installing files for mkinitcpio..."
	install -D -m644 "${srcdir}/linux-zen.conf" \
		"$pkgdir/etc/mkinitcpio.d/linux-zen.conf"
	
	install -D -m644 "${srcdir}/linux-zen.preset" \
		"$pkgdir/etc/mkinitcpio.d/linux-zen.preset"
	sed -i "s/^ALL_kver=.*$/ALL_kver=$_kernver/" \
		"$pkgdir/etc/mkinitcpio.d/linux-zen.preset"

	# Now we call depmod...
	depmod -b "$pkgdir" -F System.map "$_kernver"
	
	# move module tree /lib -> /usr/lib
	cp -a "$pkgdir/lib" "$pkgdir/usr/"
	
	rm -rf "$pkgdir/lib"
	find "$pkgdir" -type d -name .git -exec rm -r '{}' +
}

package_linux-zen-git-headers() {
	# AUR workaround
	true && pkgdesc="Header files and scripts for building modules for linux-zen"
	true && depends=("linux-zen-git")
	true && conflicts=("linux-zen-headers")
	true && provides=("linux-headers linux-zen-git-headers linux-zen-headers")

	_srcdir="/usr/src/linux-$_kernver"

	msg2 "Installing files necessary for 3rd party modules such as NVIDIA drivers or OSSv4..."
	mkdir -p "${pkgdir}/usr/src/linux-$_kernver/"{arch/x86,include,tools/objtool}

	install -D -m755 "${srcdir}/build/tools/objtool/objtool" "${pkgdir}/usr/src/linux-$_kernver/tools/objtool/objtool"	
	install -D -m644 "${srcdir}/zen-kernel/Makefile" "${pkgdir}/usr/src/linux-$_kernver/Makefile"
	install -D -m644 "${srcdir}/zen-kernel/kernel/Makefile" "${pkgdir}/usr/src/linux-$_kernver/kernel/Makefile"
	install -D -m644 "${srcdir}/build/.config" "${pkgdir}/usr/src/linux-$_kernver/.config"
	install -D -m644 "${srcdir}/build/Module.symvers" "${pkgdir}/usr/src/linux-$_kernver/Module.symvers"
	install -D -m644 "${srcdir}/build/include/generated/uapi/linux/version.h" "${pkgdir}/usr/src/linux-$_kernver/include/linux/version.h"
	install -D -m644 "${srcdir}/build/arch/x86/kernel/asm-offsets.s" "${pkgdir}/usr/src/linux-$_kernver/arch/x86/kernel/asm-offsets.s"
	install -D -m644 "${srcdir}/zen-kernel/arch/x86/Makefile" "${pkgdir}/usr/src/linux-$_kernver/arch/x86/Makefile"

	if [ "$CARCH" = "i686" ]; then
		install -D -m644 "${srcdir}/zen-kernel/arch/x86/Makefile_32.cpu" "${pkgdir}/usr/src/linux-$_kernver/arch/x86/Makefile_32.cpu"
	fi

	cp -a "${srcdir}/zen-kernel/scripts" "${pkgdir}/usr/src/linux-$_kernver"
	cp -a "${srcdir}/build/scripts" "${pkgdir}/usr/src/linux-$_kernver"
	cp -a "${srcdir}/zen-kernel/include" "${pkgdir}/usr/src/linux-$_kernver"
	cp -a "${srcdir}/build/include/"{generated,config} "${pkgdir}/usr/src/linux-$_kernver/include"
	cp -a "${srcdir}/zen-kernel/arch/x86/include" "${pkgdir}/usr/src/linux-$_kernver/arch/x86"
	cp -a "${srcdir}/build/arch/x86/include" "${pkgdir}/usr/src/linux-$_kernver/arch/x86"

	cd "${srcdir}/zen-kernel"
	{
		find drivers -type f -name "*.h";
		find . -type f -name "Kconfig*";
	} | while read file; do
		install -D -m644 "$file" "${pkgdir}/usr/src/linux-$_kernver/$file"
	done

	msg2 "Fixing permissions on scripts directory..."
	chmod og-w -R "${pkgdir}/usr/src/linux-$_kernver/scripts"

	msg2 "Creating symlinks..."
	mkdir -p "${pkgdir}/usr/lib/modules/$_kernver/"
	ln -s "/usr/src/linux-$_kernver" "${pkgdir}/usr/lib/modules/$_kernver/build"
	ln -s "/usr/src/linux-$_kernver" "${pkgdir}/usr/lib/modules/$_kernver/source"
	
	find "$pkgdir" -type d -name .git -exec rm -r '{}' +
}