# Template file for 'kirkwood-kernel'
pkgname=kirkwood-kernel
version=4.0.4
revision=1
wrksrc="linux-${version}"
maintainer="Andrea Brancaleoni <miwaxe@gmail.com>"
homepage="http://www.kernel.org/"
license="GPL-2"
short_desc="The Linux kernel and modules for kirkwood"
distfiles="${KERNEL_SITE}/kernel/v4.x/linux-${version}.tar.xz
http://www.arm.linux.org.uk/developer/machines/download.php>mach-types
https://raw.githubusercontent.com/archlinuxarm/PKGBUILDs/master/core/linux-kirkwood/archlinuxarm.patch"
skip_extraction="mach-types archlinuxarm.patch"
checksum="30651ccd2cdf01ea2215cd39a94d9b684c1b3a681120f33e6605b467fe41b4c8
fe00141a8b03349c533647fbf707007d8a5a544203359ab8e33bd3cc399e9cf5
b2dc1d470d246817b23ce4ac62913707af8ee2eae3003da645eb42668729c328"

nodebug=yes
nostrip=yes
noverifyrdeps=yes
noshlibprovides=yes

only_for_archs="armv5tel"
hostmakedepends="perl kmod uboot-mkimage libressl-openssl bc"
makedepends="ncurses-devel"
triggers="kernel-hooks"

_kernver="${version}_${revision}"
# 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.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"

post_extract() {
	local srcdir="$XBPS_SRCDISTDIR/$pkgname-$version"
	cp "${srcdir}/mach-types" arch/arm/tools
	patch -p1 < "${srcdir}/archlinuxarm.patch"
}
do_configure() {
	cp ${FILESDIR}/kirkwood-config .config

	# Always use our revision to CONFIG_LOCALVERSION to match our pkg version.
	sed -i -e "s|^\(CONFIG_LOCALVERSION=\).*|\1\"_${revision}\"|" .config
}
do_build() {
	if [ "$CROSS_BUILD" ]; then
		_args="CROSS_COMPILE=${XBPS_CROSS_TRIPLET}-"
	fi
	make ${makejobs} ${_args} ARCH=arm prepare
	make ${makejobs} ${_args} ARCH=arm uImage modules
}

do_install() {
	local hdrdest

	# Run depmod after compressing modules.
	sed -i '2iexit 0' scripts/depmod.sh

	# Install kernel, firmware and modules
	make ${makejobs} ARCH=arm INSTALL_MOD_PATH=${DESTDIR} modules_install

	vmkdir boot
	mv arch/arm/boot/uImage ${DESTDIR}/boot

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

	# Switch to /usr.
	vmkdir usr
	mv ${DESTDIR}/lib ${DESTDIR}/usr

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

	cd ${wrksrc}
	# Install required headers to build external modules
	install -Dm644 Makefile ${hdrdest}/Makefile
	install -Dm644 kernel/Makefile ${hdrdest}/kernel/Makefile
	install -Dm644 .config ${hdrdest}/.config
	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 config crypto drm generated linux math-emu \
		media net pcmcia scsi sound trace uapi video xen; do
		[ -d include/$i ] && cp -a include/$i ${hdrdest}/include
	done

	cd ${wrksrc}
	# Copy files necessary for later builds.
	cp Module.symvers ${hdrdest}
	cp -a scripts ${hdrdest}

	# fix permissions on scripts dir
	chmod og-w -R ${hdrdest}/scripts

	# copy arch includes for external modules
	mkdir -p ${hdrdest}/arch/arm/mach-kirkwood
	cp -a arch/arm/include ${hdrdest}/arch/arm

	mkdir -p ${hdrdest}/arch/arm/kernel

	cp arch/arm/Makefile ${hdrdest}/arch/arm
	cp arch/arm/kernel/asm-offsets.s ${hdrdest}/arch/arm/kernel

	# Add docbook makefile
	install -Dm644 Documentation/DocBook/Makefile \
		${hdrdest}/Documentation/DocBook/Makefile

	# 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

	# Copy in Kconfig files
	for i in $(find . -name "Kconfig*"); do
		mkdir -p ${hdrdest}/$(echo $i | sed 's|/Kconfig.*||')
		cp $i ${hdrdest}/$i
	done

	# Remove unneeded architectures
	for arch in alpha arm26 avr32 blackfin cris frv h8300 \
		ia64 m* p* s* um v850 x86 xtensa; do
		rm -rf ${hdrdest}/arch/${arch}
	done

	# Compress all modules with xz to save a few MBs.
	msg_normal "$pkgver: compressing kernel modules with gzip, please wait...\n"
	find ${DESTDIR} -name '*.ko' | xargs -n1 -P0 gzip -9

	# ... and run depmod again.
	depmod -b ${DESTDIR}/usr -F System.map ${_kernver}
}

kirkwood-kernel-headers_package() {
	nostrip=yes
	noverifyrdeps=yes
	noshlibprovides=yes
	short_desc="The Linux kernel headers for the kirkwood platform"
	pkg_install() {
		vmove usr/src
		vmove usr/lib/modules/${_kernver}/build
	}
}