APKBUILD

# Maintainer: Natanael Copa <ncopa@alpinelinux.org>

_flavor=grsec
pkgname=linux-${_flavor}
pkgver=3.13.8
case $pkgver in
*.*.*)	_kernver=${pkgver%.*};;
*.*)	_kernver=${pkgver};;
esac
pkgrel=0
pkgdesc="Linux kernel with grsecurity"
url=http://grsecurity.net
depends="mkinitfs linux-firmware"
makedepends="perl sed installkernel bash gmp-dev bc"
options="!strip"
_config=${config:-kernelconfig.${CARCH}}
install=
source="http://ftp.kernel.org/pub/linux/kernel/v3.x/linux-$_kernver.tar.xz
	http://ftp.kernel.org/pub/linux/kernel/v3.x/patch-$pkgver.xz
	grsecurity-3.0-3.13.8-201404011912.patch
	ccache.patch

	fix-memory-map-for-PIE-applications.patch
	platform-introduce-OF-style-modalias-support-for-pla.patch
	imx6q-no-unclocked-sleep.patch

	kernelconfig.x86
	kernelconfig.x86_64
	kernelconfig.armhf
	"
subpackages="$pkgname-dev"
arch="x86 x86_64 armhf"
license="GPL-2"

_abi_release=${pkgver}-${pkgrel}-${_flavor}

prepare() {
	local _patch_failed=
	cd "$srcdir"/linux-$_kernver
	if [ "${pkgver%.0}" = "$pkgver" ]; then
		msg "Applying patch-$pkgver.xz"
		unxz -c < "$srcdir"/patch-$pkgver.xz | patch -p1 -N || return 1
	fi

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

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

	rm -f localversion*
	echo "-$pkgrel-$_flavor" > localversion-alpine

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
	make -C "$srcdir"/linux-$_kernver O="$srcdir"/build HOSTCC="${CC:-gcc}" \
		silentoldconfig
}

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

build() {
	cd "$srcdir"/build
	export GCC_SPECS=hardenednopie.specs
	make CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
		|| return 1
}

package() {
	cd "$srcdir"/build
	mkdir -p "$pkgdir"/boot "$pkgdir"/lib/modules
	make -j1 modules_install firmware_install install \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_PATH="$pkgdir"/boot \
		|| return 1

	rm -f "$pkgdir"/lib/modules/${_abi_release}/build \
		"$pkgdir"/lib/modules/${_abi_release}/source
	rm -rf "$pkgdir"/lib/firmware

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

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
	#
	# this way you dont need to install the 300-400 kernel sources to
	# build a tiny kernel module
	#
	pkgdesc="Headers and script for third party modules for grsec kernel"
	depends="gmp-dev bash"
	local dir="$subpkgdir"/usr/src/linux-headers-${_abi_release}

	# first we import config, run prepare to set up for building
	# external modules, and create the scripts
	mkdir -p "$dir"
	cp "$srcdir"/$_config "$dir"/.config
	make -j1 -C "$srcdir"/linux-$_kernver O="$dir" HOSTCC="${CC:-gcc}" \
		silentoldconfig prepare modules_prepare scripts

	# remove the stuff that poits to real sources. we want 3rd party
	# modules to believe this is the soruces
	rm "$dir"/Makefile "$dir"/source

	# copy the needed stuff from real sources
	#
	# this is taken from ubuntu kernel build script
	# http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=blob;f=debian/rules.d/3-binary-indep.mk;hb=HEAD
	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"

	install -Dm644 "$srcdir"/build/Module.symvers \
		"$dir"/Module.symvers

	mkdir -p "$subpkgdir"/lib/modules/${_abi_release}
	ln -sf /usr/src/linux-headers-${_abi_release} \
		"$subpkgdir"/lib/modules/${_abi_release}/build
}

md5sums="0ecbaf65c00374eb4a826c2f9f37606f  linux-3.13.tar.xz
72b911bfc50de88c67bd0e8732978deb  patch-3.13.8.xz
8d342a525405ccd167eb95a20c0e1062  grsecurity-3.0-3.13.8-201404011912.patch
2a1bac5f61da1962dfa90dfb16895eef  ccache.patch
c6a4ae7e8ca6159e1631545515805216  fix-memory-map-for-PIE-applications.patch
f5c7e4f1dc67f8560e4b9bbe75726d13  platform-introduce-OF-style-modalias-support-for-pla.patch
1a307fc1d63231bf01d22493a4f14378  imx6q-no-unclocked-sleep.patch
37865a61f0319c558d05568f34fa11e7  kernelconfig.x86
3949ef829d102d36255ff92ff76936d2  kernelconfig.x86_64
6ea461c60077b09aa75040f7672c7250  kernelconfig.armhf"
sha256sums="4d5e5eee5f276424c32e9591f1b6c971baedc7b49f28ce03d1f48b1e5d6226a2  linux-3.13.tar.xz
073a392f4d156955df26a09c3236faf375da0afc49077e6b805f5788b8fffb10  patch-3.13.8.xz
9121632468387fa458326d1e05a62f855ba8c8ab49998500f56dca7768208bbb  grsecurity-3.0-3.13.8-201404011912.patch
b6abce04f005314f768707a54f85d150cfde1a738f20c569ffa0d11770ff70dc  ccache.patch
500f3577310be52e87b9fecdc2e9c4ca43210fd97d69089f9005d484563f74c7  fix-memory-map-for-PIE-applications.patch
e90bb651da4ff16df25565e44ca70e26367bbcbf9d27962c796c6afd5eecea96  platform-introduce-OF-style-modalias-support-for-pla.patch
21179fbb22a5b74af0a609350ae1a170e232908572b201d02e791d2ce0a685d3  imx6q-no-unclocked-sleep.patch
f8297eb16cfbe48d5202072e21fa16ebac95de26c8cfa8ec5a66610504af2f81  kernelconfig.x86
fd55e28d9baf330d6593453da592bcc03779694e7c3fb496fec47cdad1d7bcaa  kernelconfig.x86_64
c1e583baa6694643f85b8df0924cc7c4fac0f6eef963969615e6e642db0f969a  kernelconfig.armhf"
sha512sums="1ba223bb4b885d691a67196d86a8aaf7b4a1c351bf2a762f50f1b0c32da00dd0c28895872a66b49e8d244498d996876609268e64861d28ac4048886ef9f79b87  linux-3.13.tar.xz
d61fc7e95e461b8f0f09ac6e3456eea160f64555bd0c78449d98a6a06e14929915dd6f739f7c7ee34512fbf9eb44ed17e2d262830f86194cb66a4760d019f8f0  patch-3.13.8.xz
0dcb393b94a36fea3698856031e165bc665b5a5f4a080dadcf6f4928e4776780fb16b23c5de8a0446c9a3766afa42f36df67f000b0b020e13c025b474fb68531  grsecurity-3.0-3.13.8-201404011912.patch
f6e36cc94cb0c06ba181362f6de6c9fd431e571fbb35acad78d8790ae107531add54f6cb87d78180dd604076d2326885d16127fc4176ed07277ea89c151ce4e0  ccache.patch
4665c56ae1bbac311f9205d64918e84ee8b01d47d6e2396ff6b8adfb10aada7f7254531ce62e31edbb65c2a54a830f09ad05d314dfcd75d6272f4068945ad7c7  fix-memory-map-for-PIE-applications.patch
2ef795ebd70939be346cba824e6af2ca3d8220cdbc54b9fe3a6861cf44bc0df954ca91b7f6e68dcecebdb8a6a1651c12869588cea8c191f9054fe7a8db02f2a4  platform-introduce-OF-style-modalias-support-for-pla.patch
87d1ad59732f265a5b0db54490dc1762c14ea4b868e7eb1aedc3ce57b48046de7bbc08cf5cfcf6f1380fa84063b0edb16ba3d5e3c5670be9bbb229275c88b221  imx6q-no-unclocked-sleep.patch
852e46d89f9a445a1c5400f1dbbdefc93667f68a58a1b4ecc7dcad4cb125e1c3d11971ca8f33ef04a0c5a117293b3012c8a758c68edf7f0a300a80a81e686d64  kernelconfig.x86
16083f764d700959dfc066e524554011743b9ea4e6ca0db1c73b22e36cd0a6ca0dffd293fb758ea50f0a930e26b149a27e27e58728b500bb7f5b81f7b973d1cf  kernelconfig.x86_64
4797e9a125d496704c6e3aa6f9799c47d253409fa501e5f9c1d83e782b426413cd76d434dee5a12f90b0e0575a7177e3442ecc1fe297e8de0bca8395f00b6e61  kernelconfig.armhf"