# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

# Eblit to handle src_unpack.

eblit-mips-sources-src_unpack() {
	# Unpack the kernel sources, update to the latest rev (if needed),
	# and apply the latest patch from linux-mips git.
	kernel-2_src_unpack

	# Unpack the mips-sources patchset to ${WORKDIR}/mips-patches-${BASE_KV}.
	echo -e ""
	cd "${WORKDIR}"
	unpack "${PN}-${BASE_KV}-patches-v${GENPATCHREV}.tar.xz"

	# Create a new folder, patch-symlinks, and create symlinks to
	# mips-patches in there.  If we want to exclude a patch, we'll
	# just delete the symlink instead of the actual patch.
	local psym="patch-symlinks"
	mkdir "${psym}"
	cd "${psym}"
	for x in ../mips-patches-${BASE_KV}/*.patch; do
		ln -s "${x}" "${x##../mips-patches-*/}"
	done

	# With symlinks created, setup the variables referencing external
	# machine patches and if a machine USE flag is enabled, then unset
	# its corresponding variable.
	# See 0000_README for the patch numbers and their meanings.
	local p_generic="51*"
	local p_ip27="52*" p_ip28="53*" p_ip30="54*"
	use ip27 && unset p_generic p_ip27
	use ip28 && unset p_ip28
	use ip30 && unset p_generic p_ip30

	# Remove symlinks for any patches that we don't want applied.  We do
	# this by looping through all the above variables, and deleting
	# matching symlinks that point to the corresponding patches.
	# The remaining symlinks will be applied to the kernel source.
	local patchlist="${p_generic} ${p_ip27} ${p_ip28} ${p_ip30}"
	for x in $patchlist; do rm -f "./${x}"; done

	# Rename the source tree to match the linux-mips git checkout date and
	# machine type.
	local fkv="${F_KV%-*}"
	local v="${fkv}-${GITDATE}"
	for x in {ip27,ip28,ip30,cobalt}; do use ${x} && v="${v}.${x}" && break; done
	mv "${WORKDIR}/linux-${fkv/_/-}" "${WORKDIR}/linux-${v}" || die
	S="${WORKDIR}/linux-${v}"

	# Now go into the kernel source and patch it.
	cd "${S}"
	epatch "${WORKDIR}/${psym}"/*.patch

	# Set the EXTRAVERSION to linux-VERSION-mipsgit-GITDATE
	EXTRAVERSION="${EXTRAVERSION}-mipsgit-${GITDATE}"
	unpack_set_extraversion
}