APKBUILD 5.93 KB
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# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
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_flavor=grsec
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pkgname=linux-${_flavor}
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pkgver=3.12.8
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case $pkgver in
*.*.*)	_kernver=${pkgver%.*};;
*.*)	_kernver=${pkgver};;
esac
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pkgrel=1
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pkgdesc="Linux kernel with grsecurity"
url=http://grsecurity.net
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depends="mkinitfs linux-firmware"
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makedepends="perl sed installkernel bash gmp-dev bc"
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options="!strip"
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_config=${config:-kernelconfig.${CARCH}}
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install=
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source="http://ftp.kernel.org/pub/linux/kernel/v3.x/linux-$_kernver.tar.xz
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	http://ftp.kernel.org/pub/linux/kernel/v3.x/patch-$pkgver.xz
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	grsecurity-3.0-3.12.8-201401191015.patch
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	fix-memory-map-for-PIE-applications.patch
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	kernelconfig.x86
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	kernelconfig.x86_64
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	"
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subpackages="$pkgname-dev"
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arch="x86 x86_64 arm"
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license="GPL-2"
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_abi_release=${pkgver}-${pkgrel}-${_flavor}
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prepare() {
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	local _patch_failed=
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	cd "$srcdir"/linux-$_kernver
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	if [ "${pkgver%.0}" = "$pkgver" ]; then
		msg "Applying patch-$pkgver.xz"
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		unxz -c < "$srcdir"/patch-$pkgver.xz | patch -p1 -N || return 1
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	fi

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	# first apply patches in specified order
	for i in $source; do
		case $i in
		*.patch)
			msg "Applying $i..."
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			if ! patch -s -p1 -N -i "$srcdir"/$i; then
				echo $i >>failed
				_patch_failed=1
			fi
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			;;
		esac
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	done

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	if ! [ -z "$_patch_failed" ]; then
		error "The following patches failed:"
		cat failed
		return 1
	fi

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	rm -f localversion*
	echo "-$pkgrel-$_flavor" > localversion-alpine
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	mkdir -p "$srcdir"/build
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	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
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	make -C "$srcdir"/linux-$_kernver O="$srcdir"/build HOSTCC="${CC:-gcc}" \
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		silentoldconfig
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}

# this is so we can do: 'abuild menuconfig' to reconfigure kernel
menuconfig() {
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	cd "$srcdir"/build || return 1
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	make menuconfig
	cp .config "$startdir"/$_config
}

build() {
	cd "$srcdir"/build
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	export GCC_SPECS=hardenednopie.specs
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	make CC="${CC:-gcc}" \
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		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
		|| return 1
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}
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package() {
	cd "$srcdir"/build
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	mkdir -p "$pkgdir"/boot "$pkgdir"/lib/modules
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	make -j1 modules_install firmware_install install \
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		INSTALL_MOD_PATH="$pkgdir" \
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		INSTALL_PATH="$pkgdir"/boot \
		|| return 1
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	rm -f "$pkgdir"/lib/modules/${_abi_release}/build \
		"$pkgdir"/lib/modules/${_abi_release}/source
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	rm -rf "$pkgdir"/lib/firmware

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	install -D include/config/kernel.release \
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		"$pkgdir"/usr/share/kernel/$_flavor/kernel.release
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}

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dev() {
	# copy the only the parts that we really need for build 3rd party
	# kernel modules and install those as /usr/src/linux-headers,
	# simlar to what ubuntu does
	#
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	# this way you dont need to install the 300-400 kernel sources to
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	# build a tiny kernel module
	#
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	pkgdesc="Headers and script for third party modules for grsec kernel"
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	depends="gmp-dev bash"
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	local dir="$subpkgdir"/usr/src/linux-headers-${_abi_release}
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	# first we import config, run prepare to set up for building
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	# external modules, and create the scripts
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	mkdir -p "$dir"
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	cp "$srcdir"/$_config "$dir"/.config
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	make -j1 -C "$srcdir"/linux-$_kernver O="$dir" HOSTCC="${CC:-gcc}" \
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		silentoldconfig prepare modules_prepare scripts
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	# remove the stuff that poits to real sources. we want 3rd party
	# modules to believe this is the soruces
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	rm "$dir"/Makefile "$dir"/source

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	# copy the needed stuff from real sources
	#
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	# this is taken from ubuntu kernel build script
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	# http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=blob;f=debian/rules.d/3-binary-indep.mk;hb=HEAD
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	cd "$srcdir"/linux-$_kernver
	find . -path './include/*' -prune -o -path './scripts/*' -prune \
		-o -type f \( -name 'Makefile*' -o -name 'Kconfig*' \
		-o -name 'Kbuild*' -o -name '*.sh' -o -name '*.pl' \
		-o -name '*.lds' \) | cpio -pdm "$dir"
	cp -a drivers/media/dvb/dvb-core/*.h "$dir"/drivers/media/dvb/dvb-core
	cp -a drivers/media/video/*.h "$dir"/drivers/media/video
	cp -a drivers/media/dvb/frontends/*.h "$dir"/drivers/media/dvb/frontends
	cp -a scripts include "$dir"
	find $(find arch -name include -type d -print) -type f \
		| cpio -pdm "$dir"
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	install -Dm644 "$srcdir"/build/Module.symvers \
		"$dir"/Module.symvers
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	mkdir -p "$subpkgdir"/lib/modules/${_abi_release}
	ln -sf /usr/src/linux-headers-${_abi_release} \
		"$subpkgdir"/lib/modules/${_abi_release}/build
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}

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md5sums="cc6ee608854e0da4b64f6c1ff8b6398c  linux-3.12.tar.xz
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03d34842e3a1197d17055610f62627b8  patch-3.12.8.xz
a7dd09d05b98cca3b7c00098698bdd38  grsecurity-3.0-3.12.8-201401191015.patch
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c6a4ae7e8ca6159e1631545515805216  fix-memory-map-for-PIE-applications.patch
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4f205f0ffb156981e246efd40aef0e62  kernelconfig.x86
5637a99eb3de355397d5783587b1e6c4  kernelconfig.x86_64"
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sha256sums="2e120ec7fde19fa51dc6b6cc11c81860a0775defcad5a5bf910ed9a50e845a02  linux-3.12.tar.xz
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a8e056bec1a39bbca8d2df9c477a9dee0e263ae4335601548eda14326e83e782  patch-3.12.8.xz
8ec870556270bb0041b1b7fcc4d86328c62023a288b8e914b8721c94956ac737  grsecurity-3.0-3.12.8-201401191015.patch
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500f3577310be52e87b9fecdc2e9c4ca43210fd97d69089f9005d484563f74c7  fix-memory-map-for-PIE-applications.patch
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9006fc1fe7146f755b529c26d452fe67c1478537b307b88452bb6c42aeef807a  kernelconfig.x86
1caf036d53fb8660cdd4f9362425887c6bdde980b2c48475f4f8af7a97b3c170  kernelconfig.x86_64"
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sha512sums="4ba5797e0772726d05c9f2eee66dc6dc2a5033c749ef44764c805a83da739ed5d0c6443b76785e38fe1ef74cc7ade787e48144faed0cfcb6f124f05248c700ff  linux-3.12.tar.xz
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27cf39ed82d2b28669a7a63b577814b625e9fa73fce4e15c5f4a35358621356e4364c4892427fb5e02982087090404f5ce871357a04c0372d008b1e55ca55aee  patch-3.12.8.xz
d8d9ead63a728385fff54597cd25d0856d9f1e964d871cf75ed9563beb358ea8f6e87d81ed16432c02772fa3d8e1caf45b15e0cce4ec4c07e73e0ef531f28016  grsecurity-3.0-3.12.8-201401191015.patch
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4665c56ae1bbac311f9205d64918e84ee8b01d47d6e2396ff6b8adfb10aada7f7254531ce62e31edbb65c2a54a830f09ad05d314dfcd75d6272f4068945ad7c7  fix-memory-map-for-PIE-applications.patch
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3d262012fcc577501a8d2f66c4a507d379d8eb43866f311ff9b041a2f45c2e2d1d3b738e3cf670d0927320db2227697ad31d15bf9475d32dfa6e420bd534c818  kernelconfig.x86
3da6b8c924ab93246c90f9300e25356ee85bcdfd226d77d60db90d6855137ef2ab8bd861cb0806b85603a9f143bb2d55ded34471bca5c8f492febb4eaba83904  kernelconfig.x86_64"