[gentoo-commits] dev/heroxbd:master commit in: eclass/

["Benda XU" <heroxbd@gentoo.org>]

commit:     81fc154277582961526722e099fb8d38751000fd
Author:     Benda Xu <heroxbd <AT> gentoo <DOT> org>
AuthorDate: Mon May 23 16:14:35 2016 +0000
Commit:     Benda XU <heroxbd <AT> gentoo <DOT> org>
CommitDate: Mon May 23 16:14:35 2016 +0000
URL:        https://gitweb.gentoo.org/dev/heroxbd.git/commit/?id=81fc1542

kernel-2.eclass: track.

Bug: 478436

 eclass/kernel-2.eclass | 1321 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1321 insertions(+)

diff --git a/eclass/kernel-2.eclass b/eclass/kernel-2.eclass
new file mode 100644
index 0000000..e8cb8f2
--- /dev/null
+++ b/eclass/kernel-2.eclass
@@ -0,0 +1,1321 @@
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/eclass/kernel-2.eclass,v 1.297 2014/11/28 17:40:20 mpagano Exp $
+
+# Description: kernel.eclass rewrite for a clean base regarding the 2.6
+#              series of kernel with back-compatibility for 2.4
+#
+# Original author: John Mylchreest <johnm@gentoo.org>
+# Maintainer: kernel-misc@gentoo.org
+#
+# Please direct your bugs to the current eclass maintainer :)
+
+# added functionality:
+# unipatch		- a flexible, singular method to extract, add and remove patches.
+
+# A Couple of env vars are available to effect usage of this eclass
+# These are as follows:
+#
+# K_USEPV				- When setting the EXTRAVERSION variable, it should
+#						  add PV to the end.
+#						  this is useful for thigns like wolk. IE:
+#						  EXTRAVERSION would be something like : -wolk-4.19-r1
+# K_NOSETEXTRAVERSION	- if this is set then EXTRAVERSION will not be
+#						  automatically set within the kernel Makefile
+# K_NOUSENAME			- if this is set then EXTRAVERSION will not include the
+#						  first part of ${PN} in EXTRAVERSION
+# K_NOUSEPR				- if this is set then EXTRAVERSION will not include the
+#						  anything based on ${PR}.
+# K_PREPATCHED			- if the patchset is prepatched (ie: mm-sources,
+#						  ck-sources, ac-sources) it will use PR (ie: -r5) as
+#						  the patchset version for
+#						  and not use it as a true package revision
+# K_EXTRAEINFO			- this is a new-line seperated list of einfo displays in
+#						  postinst and can be used to carry additional postinst
+#						  messages
+# K_EXTRAELOG			- same as K_EXTRAEINFO except using elog instead of einfo
+# K_EXTRAEWARN			- same as K_EXTRAEINFO except using ewarn instead of einfo
+# K_SYMLINK				- if this is set, then forcably create symlink anyway
+#
+# K_DEFCONFIG			- Allow specifying a different defconfig target.
+#						  If length zero, defaults to "defconfig".
+# K_WANT_GENPATCHES		- Apply genpatches to kernel source. Provide any
+# 						  combination of "base", "extras" or "experimental".
+# K_EXP_GENPATCHES_PULL	- If set, we pull "experimental" regardless of the USE FLAG
+#						  but expect the ebuild maintainer to use K_EXP_GENPATCHES_LIST.
+# K_EXP_GENPATCHES_NOUSE	- If set, no USE flag will be provided for "experimental";
+# 						  as a result the user cannot choose to apply those patches.
+# K_EXP_GENPATCHES_LIST	- A list of patches to pick from "experimental" to apply when
+# 						  the USE flag is unset and K_EXP_GENPATCHES_PULL is set.
+# K_GENPATCHES_VER		- The version of the genpatches tarball(s) to apply.
+#						  A value of "5" would apply genpatches-2.6.12-5 to
+#						  my-sources-2.6.12.ebuild
+# K_SECURITY_UNSUPPORTED- If set, this kernel is unsupported by Gentoo Security
+# K_DEBLOB_AVAILABLE	- A value of "0" will disable all of the optional deblob
+#						  code. If empty, will be set to "1" if deblobbing is
+#						  possible. Test ONLY for "1".
+# K_PREDEBLOBBED		- This kernel was already deblobbed elsewhere.
+#						  If false, either optional deblobbing will be available
+#						  or the license will note the inclusion of freedist
+#						  code.
+# K_LONGTERM			- If set, the eclass will search for the kernel source
+#						  in the long term directories on the upstream servers
+#						  as the location has been changed by upstream
+# H_SUPPORTEDARCH		- this should be a space separated list of ARCH's which
+#						  can be supported by the headers ebuild
+
+# UNIPATCH_LIST			- space delimetered list of patches to be applied to the
+#						  kernel
+# UNIPATCH_EXCLUDE		- an addition var to support exlusion based completely
+#						  on "<passedstring>*" and not "<passedno#>_*"
+#						- this should _NOT_ be used from the ebuild as this is
+#						  reserved for end users passing excludes from the cli
+# UNIPATCH_DOCS			- space delimemeted list of docs to be installed to
+#						  the doc dir
+# UNIPATCH_STRICTORDER	- if this is set places patches into directories of
+#						  order, so they are applied in the order passed
+
+# Changing any other variable in this eclass is not supported; you can request
+# for additional variables to be added by contacting the current maintainer.
+# If you do change them, there is a chance that we will not fix resulting bugs;
+# that of course does not mean we're not willing to help.
+
+PYTHON_COMPAT=( python{2_6,2_7} )
+
+inherit eutils toolchain-funcs versionator multilib python-any-r1
+EXPORT_FUNCTIONS pkg_setup src_unpack src_compile src_test src_install pkg_preinst pkg_postinst pkg_postrm
+
+# Added by Daniel Ostrow <dostrow@gentoo.org>
+# This is an ugly hack to get around an issue with a 32-bit userland on ppc64.
+# I will remove it when I come up with something more reasonable.
+[[ ${PROFILE_ARCH} == "ppc64" ]] && CHOST="powerpc64-${CHOST#*-}"
+
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} && ${CATEGORY/cross-} != ${CATEGORY} ]]; then
+	export CTARGET=${CATEGORY/cross-}
+fi
+
+HOMEPAGE="http://www.kernel.org/ http://www.gentoo.org/ ${HOMEPAGE}"
+: ${LICENSE:="GPL-2"}
+
+# This is the latest KV_PATCH of the deblob tool available from the
+# libre-sources upstream. If you bump this, you MUST regenerate the Manifests
+# for ALL kernel-2 consumer packages where deblob is available.
+: ${DEBLOB_MAX_VERSION:=38}
+
+# No need to run scanelf/strip on kernel sources/headers (bug #134453).
+RESTRICT="binchecks strip"
+
+# set LINUX_HOSTCFLAGS if not already set
+: ${LINUX_HOSTCFLAGS:="-Wall -Wstrict-prototypes -Os -fomit-frame-pointer -I${S}/include"}
+
+# debugging functions
+#==============================================================
+# this function exists only to help debug kernel-2.eclass
+# if you are adding new functionality in, put a call to it
+# at the start of src_unpack, or during SRC_URI/dep generation.
+debug-print-kernel2-variables() {
+	for v in PVR CKV OKV KV KV_FULL KV_MAJOR KV_MINOR KV_PATCH RELEASETYPE \
+			RELEASE UNIPATCH_LIST_DEFAULT UNIPATCH_LIST_GENPATCHES \
+			UNIPATCH_LIST S KERNEL_URI K_WANT_GENPATCHES ; do
+		debug-print "${v}: ${!v}"
+	done
+}
+
+#Eclass functions only from here onwards ...
+#==============================================================
+handle_genpatches() {
+	local tarball
+	[[ -z ${K_WANT_GENPATCHES} || -z ${K_GENPATCHES_VER} ]] && return 1
+
+	debug-print "Inside handle_genpatches"
+	local OKV_ARRAY
+	IFS="." read -r -a OKV_ARRAY <<<"${OKV}"
+
+	# for > 3.0 kernels, handle genpatches tarball name
+	# genpatches for 3.0 and 3.0.1 might be named
+	# genpatches-3.0-1.base.tar.xz and genpatches-3.0-2.base.tar.xz
+	# respectively.  Handle this.
+
+	for i in ${K_WANT_GENPATCHES} ; do
+		if [[ ${KV_MAJOR} -ge 3 ]]; then
+			if [[ ${#OKV_ARRAY[@]} -ge 3 ]]; then
+				tarball="genpatches-${KV_MAJOR}.${KV_MINOR}-${K_GENPATCHES_VER}.${i}.tar.xz"
+			else
+				tarball="genpatches-${KV_MAJOR}.${KV_PATCH}-${K_GENPATCHES_VER}.${i}.tar.xz"
+			fi
+		else
+			tarball="genpatches-${OKV}-${K_GENPATCHES_VER}.${i}.tar.xz"
+		fi
+
+		local use_cond_start="" use_cond_end=""
+
+		if [[ "${i}" == "experimental" && -z ${K_EXP_GENPATCHES_PULL} && -z ${K_EXP_GENPATCHES_NOUSE} ]] ; then
+			use_cond_start="experimental? ( "
+			use_cond_end=" )"
+
+			if use experimental ; then
+				UNIPATCH_LIST_GENPATCHES+=" ${DISTDIR}/${tarball}"
+				debug-print "genpatches tarball: $tarball"
+			fi
+		else
+			UNIPATCH_LIST_GENPATCHES+=" ${DISTDIR}/${tarball}"
+			debug-print "genpatches tarball: $tarball"
+		fi
+
+		GENPATCHES_URI+=" ${use_cond_start}mirror://gentoo/${tarball}${use_cond_end}"
+	done
+}
+
+detect_version() {
+	# this function will detect and set
+	# - OKV: Original Kernel Version (2.6.0/2.6.0-test11)
+	# - KV: Kernel Version (2.6.0-gentoo/2.6.0-test11-gentoo-r1)
+	# - EXTRAVERSION: The additional version appended to OKV (-gentoo/-gentoo-r1)
+
+	# We've already run, so nothing to do here.
+	[[ -n ${KV_FULL} ]] && return 0
+
+	# CKV is used as a comparison kernel version, which is used when
+	# PV doesnt reflect the genuine kernel version.
+	# this gets set to the portage style versioning. ie:
+	#   CKV=2.6.11_rc4
+	CKV=${CKV:-${PV}}
+	OKV=${OKV:-${CKV}}
+	OKV=${OKV/_beta/-test}
+	OKV=${OKV/_rc/-rc}
+	OKV=${OKV/-r*}
+	OKV=${OKV/_p*}
+
+	KV_MAJOR=$(get_version_component_range 1 ${OKV})
+	# handle if OKV is X.Y or X.Y.Z (e.g. 3.0 or 3.0.1)
+	local OKV_ARRAY
+	IFS="." read -r -a OKV_ARRAY <<<"${OKV}"
+
+	# if KV_MAJOR >= 3, then we have no more KV_MINOR
+	#if [[ ${KV_MAJOR} -lt 3 ]]; then
+	if [[ ${#OKV_ARRAY[@]} -ge 3 ]]; then
+		KV_MINOR=$(get_version_component_range 2 ${OKV})
+		KV_PATCH=$(get_version_component_range 3 ${OKV})
+		if [[ ${KV_MAJOR}${KV_MINOR}${KV_PATCH} -ge 269 ]]; then
+	        KV_EXTRA=$(get_version_component_range 4- ${OKV})
+	        KV_EXTRA=${KV_EXTRA/[-_]*}
+		else
+			KV_PATCH=$(get_version_component_range 3- ${OKV})
+		fi
+	else
+		KV_PATCH=$(get_version_component_range 2 ${OKV})
+		KV_EXTRA=$(get_version_component_range 3- ${OKV})
+		KV_EXTRA=${KV_EXTRA/[-_]*}
+	fi
+
+	debug-print "KV_EXTRA is ${KV_EXTRA}"
+
+	KV_PATCH=${KV_PATCH/[-_]*}
+
+	local v n=0 missing
+	#if [[ ${KV_MAJOR} -lt 3 ]]; then
+	if [[ ${#OKV_ARRAY[@]} -ge 3 ]]; then
+		for v in CKV OKV KV_{MAJOR,MINOR,PATCH} ; do
+			[[ -z ${!v} ]] && n=1 && missing="${missing}${v} ";
+		done
+	else
+		for v in CKV OKV KV_{MAJOR,PATCH} ; do
+			[[ -z ${!v} ]] && n=1 && missing="${missing}${v} ";
+		done
+	fi
+
+	[[ $n -eq 1 ]] && \
+		eerror "Missing variables: ${missing}" && \
+		die "Failed to extract kernel version (try explicit CKV in ebuild)!"
+	unset v n missing
+
+#	if [[ ${KV_MAJOR} -ge 3 ]]; then
+	if [[ ${#OKV_ARRAY[@]} -lt 3 ]]; then
+		KV_PATCH_ARR=(${KV_PATCH//\./ })
+
+		# at this point 031412, Linus is putting all 3.x kernels in a
+		# 3.x directory, may need to revisit when 4.x is released
+		KERNEL_BASE_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.x"
+
+		[[ -n "${K_LONGTERM}" ]] &&
+			KERNEL_BASE_URI="${KERNEL_BASE_URI}/longterm/v${KV_MAJOR}.${KV_PATCH_ARR}"
+	else
+		#KERNEL_BASE_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.0"
+		#KERNEL_BASE_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}"
+		if [[ ${KV_MAJOR} -ge 3 ]]; then
+			KERNEL_BASE_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.x"
+		else
+			KERNEL_BASE_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}"
+		fi
+
+		[[ -n "${K_LONGTERM}" ]] &&
+			#KERNEL_BASE_URI="${KERNEL_BASE_URI}/longterm"
+			KERNEL_BASE_URI="${KERNEL_BASE_URI}/longterm/v${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
+	fi
+
+	debug-print "KERNEL_BASE_URI is ${KERNEL_BASE_URI}"
+
+	if [[ ${#OKV_ARRAY[@]} -ge 3 ]] && [[ ${KV_MAJOR} -ge 3 ]]; then
+		# handle non genpatch using sources correctly
+		if [[ -z ${K_WANT_GENPATCHES} && -z ${K_GENPATCHES_VER} && ${KV_PATCH} -gt 0 ]]; then
+			KERNEL_URI="${KERNEL_BASE_URI}/patch-${OKV}.xz"
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${CKV}.xz"
+		fi
+		KERNEL_URI="${KERNEL_URI} ${KERNEL_BASE_URI}/linux-${KV_MAJOR}.${KV_MINOR}.tar.xz"
+	else
+		KERNEL_URI="${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+	fi
+
+	RELEASE=${CKV/${OKV}}
+	RELEASE=${RELEASE/_beta}
+	RELEASE=${RELEASE/_rc/-rc}
+	RELEASE=${RELEASE/_pre/-pre}
+	# We cannot trivally call kernel_is here, because it calls us to detect the
+	# version
+	#kernel_is ge 2 6 && RELEASE=${RELEASE/-pre/-git}
+	[ $(($KV_MAJOR * 1000 + ${KV_MINOR:-0})) -ge 2006 ] && RELEASE=${RELEASE/-pre/-git}
+	RELEASETYPE=${RELEASE//[0-9]}
+
+	# Now we know that RELEASE is the -rc/-git
+	# and RELEASETYPE is the same but with its numerics stripped
+	# we can work on better sorting EXTRAVERSION.
+	# first of all, we add the release
+	EXTRAVERSION="${RELEASE}"
+	debug-print "0 EXTRAVERSION:${EXTRAVERSION}"
+	[[ -n ${KV_EXTRA} ]] && [[ ${KV_MAJOR} -lt 3 ]] && EXTRAVERSION=".${KV_EXTRA}${EXTRAVERSION}"
+
+	debug-print "1 EXTRAVERSION:${EXTRAVERSION}"
+	if [[ -n "${K_NOUSEPR}" ]]; then
+		# Don't add anything based on PR to EXTRAVERSION
+		debug-print "1.0 EXTRAVERSION:${EXTRAVERSION}"
+	elif [[ -n ${K_PREPATCHED} ]]; then
+		debug-print "1.1 EXTRAVERSION:${EXTRAVERSION}"
+		EXTRAVERSION="${EXTRAVERSION}-${PN/-*}${PR/r}"
+	elif [[ "${ETYPE}" = "sources" ]]; then
+		debug-print "1.2 EXTRAVERSION:${EXTRAVERSION}"
+		# For some sources we want to use the PV in the extra version
+		# This is because upstream releases with a completely different
+		# versioning scheme.
+		case ${PN/-*} in
+		     wolk) K_USEPV=1;;
+		  vserver) K_USEPV=1;;
+		esac
+
+		[[ -z "${K_NOUSENAME}" ]] && EXTRAVERSION="${EXTRAVERSION}-${PN/-*}"
+		[[ -n "${K_USEPV}" ]]     && EXTRAVERSION="${EXTRAVERSION}-${PV//_/-}"
+		[[ -n "${PR//r0}" ]] && EXTRAVERSION="${EXTRAVERSION}-${PR}"
+	fi
+	debug-print "2 EXTRAVERSION:${EXTRAVERSION}"
+
+	# The only messing around which should actually effect this is for KV_EXTRA
+	# since this has to limit OKV to MAJ.MIN.PAT and strip EXTRA off else
+	# KV_FULL evaluates to MAJ.MIN.PAT.EXT.EXT after EXTRAVERSION
+
+	if [[ -n ${KV_EXTRA} ]]; then
+		if [[ -n ${KV_MINOR} ]]; then
+			OKV="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
+		else
+			OKV="${KV_MAJOR}.${KV_PATCH}"
+		fi
+		KERNEL_URI="${KERNEL_BASE_URI}/patch-${CKV}.xz
+					${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+		UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${CKV}.xz"
+	fi
+
+	# We need to set this using OKV, but we need to set it before we do any
+	# messing around with OKV based on RELEASETYPE
+	KV_FULL=${OKV}${EXTRAVERSION}
+
+	# we will set this for backwards compatibility.
+	S=${WORKDIR}/linux-${KV_FULL}
+	KV=${KV_FULL}
+
+	# -rc-git pulls can be achieved by specifying CKV
+	# for example:
+	#   CKV="2.6.11_rc3_pre2"
+	# will pull:
+	#   linux-2.6.10.tar.xz & patch-2.6.11-rc3.xz & patch-2.6.11-rc3-git2.xz
+
+	if [[ ${KV_MAJOR}${KV_MINOR} -eq 26 ]]; then
+
+		if [[ ${RELEASETYPE} == -rc ]] || [[ ${RELEASETYPE} == -pre ]]; then
+			OKV="${KV_MAJOR}.${KV_MINOR}.$((${KV_PATCH} - 1))"
+			KERNEL_URI="${KERNEL_BASE_URI}/testing/patch-${CKV//_/-}.xz
+						${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${CKV//_/-}.xz"
+		fi
+
+		if [[ ${RELEASETYPE} == -git ]]; then
+			KERNEL_URI="${KERNEL_BASE_URI}/snapshots/patch-${OKV}${RELEASE}.xz
+						${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${OKV}${RELEASE}.xz"
+		fi
+
+		if [[ ${RELEASETYPE} == -rc-git ]]; then
+			OKV="${KV_MAJOR}.${KV_MINOR}.$((${KV_PATCH} - 1))"
+			KERNEL_URI="${KERNEL_BASE_URI}/snapshots/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE}.xz
+						${KERNEL_BASE_URI}/testing/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE/-git*}.xz
+						${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE/-git*}.xz ${DISTDIR}/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE}.xz"
+		fi
+	else
+		if [[ ${RELEASETYPE} == -rc ]] || [[ ${RELEASETYPE} == -pre ]]; then
+			if [[ ${KV_MAJOR}${KV_PATCH} -eq 30 ]]; then
+				OKV="2.6.39"
+			else
+				KV_PATCH_ARR=(${KV_PATCH//\./ })
+				OKV="${KV_MAJOR}.$((${KV_PATCH_ARR} - 1))"
+			fi
+			KERNEL_URI="${KERNEL_BASE_URI}/testing/patch-${CKV//_/-}.xz
+						${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${CKV//_/-}.xz"
+		fi
+
+		if [[ ${RELEASETYPE} == -git ]]; then
+			KERNEL_URI="${KERNEL_BASE_URI}/snapshots/patch-${OKV}${RELEASE}.xz
+						${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${OKV}${RELEASE}.xz"
+		fi
+
+		if [[ ${RELEASETYPE} == -rc-git ]]; then
+			if [[ ${KV_MAJOR}${KV_PATCH} -eq 30 ]]; then
+				OKV="2.6.39"
+			else
+				KV_PATCH_ARR=(${KV_PATCH//\./ })
+				OKV="${KV_MAJOR}.$((${KV_PATCH_ARR} - 1))"
+			fi
+			KERNEL_URI="${KERNEL_BASE_URI}/snapshots/patch-${KV_MAJOR}.${KV_PATCH}${RELEASE}.xz
+						${KERNEL_BASE_URI}/testing/patch-${KV_MAJOR}.${KV_PATCH}${RELEASE/-git*}.xz
+						${KERNEL_BASE_URI}/linux-${OKV}.tar.xz"
+
+			UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${KV_MAJOR}.${KV_PATCH}${RELEASE/-git*}.xz ${DISTDIR}/patch-${KV_MAJOR}.${KV_PATCH}${RELEASE}.xz"
+		fi
+
+
+	fi
+
+
+	debug-print-kernel2-variables
+
+	handle_genpatches
+}
+
+# Note: duplicated in linux-info.eclass
+kernel_is() {
+	# ALL of these should be set before we can safely continue this function.
+	# some of the sources have in the past had only one set.
+	local v n=0
+	for v in OKV KV_{MAJOR,MINOR,PATCH} ; do [[ -z ${!v} ]] && n=1 ; done
+	[[ $n -eq 1 ]] && detect_version
+	unset v n
+
+	# Now we can continue
+	local operator test value
+
+	case ${1#-} in
+	  lt) operator="-lt"; shift;;
+	  gt) operator="-gt"; shift;;
+	  le) operator="-le"; shift;;
+	  ge) operator="-ge"; shift;;
+	  eq) operator="-eq"; shift;;
+	   *) operator="-eq";;
+	esac
+	[[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
+
+	: $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
+	: $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
+	[ ${test} ${operator} ${value} ]
+}
+
+kernel_is_2_4() {
+	kernel_is 2 4
+}
+
+kernel_is_2_6() {
+	kernel_is 2 6 || kernel_is 2 5
+}
+
+# Capture the sources type and set DEPENDs
+if [[ ${ETYPE} == sources ]]; then
+	DEPEND="!build? (
+		sys-apps/sed
+		>=sys-devel/binutils-2.11.90.0.31
+	)"
+	RDEPEND="!build? (
+		>=sys-libs/ncurses-5.2
+		sys-devel/make
+		dev-lang/perl
+		sys-devel/bc
+	)"
+	PDEPEND="!build? ( virtual/dev-manager )"
+
+	SLOT="${PVR}"
+	DESCRIPTION="Sources based on the Linux Kernel."
+	IUSE="symlink build"
+
+	# Bug #266157, deblob for libre support
+	if [[ -z ${K_PREDEBLOBBED} ]] ; then
+		# Bug #359865, force a call to detect_version if needed
+		kernel_is ge 2 6 27 && \
+			[[ -z "${K_DEBLOB_AVAILABLE}" ]] && \
+				kernel_is le 2 6 ${DEBLOB_MAX_VERSION} && \
+					K_DEBLOB_AVAILABLE=1
+		if [[ ${K_DEBLOB_AVAILABLE} == "1" ]] ; then
+			IUSE="${IUSE} deblob"
+
+			# Reflect that kernels contain firmware blobs unless otherwise
+			# stripped
+			LICENSE="${LICENSE} !deblob? ( freedist )"
+
+			DEPEND+=" deblob? ( ${PYTHON_DEPS} )"
+
+			if [[ -n KV_MINOR ]]; then
+				DEBLOB_PV="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
+			else
+				DEBLOB_PV="${KV_MAJOR}.${KV_PATCH}"
+			fi
+
+			if [[ ${KV_MAJOR} -ge 3 ]]; then
+				DEBLOB_PV="${KV_MAJOR}.${KV_MINOR}"
+			fi
+
+			DEBLOB_A="deblob-${DEBLOB_PV}"
+			DEBLOB_CHECK_A="deblob-check-${DEBLOB_PV}"
+			DEBLOB_HOMEPAGE="http://www.fsfla.org/svnwiki/selibre/linux-libre/"
+			DEBLOB_URI_PATH="download/releases/LATEST-${DEBLOB_PV}.N"
+			if ! has "${EAPI:-0}" 0 1 ; then
+				DEBLOB_CHECK_URI="${DEBLOB_HOMEPAGE}/${DEBLOB_URI_PATH}/deblob-check -> ${DEBLOB_CHECK_A}"
+			else
+				DEBLOB_CHECK_URI="mirror://gentoo/${DEBLOB_CHECK_A}"
+			fi
+			DEBLOB_URI="${DEBLOB_HOMEPAGE}/${DEBLOB_URI_PATH}/${DEBLOB_A}"
+			HOMEPAGE="${HOMEPAGE} ${DEBLOB_HOMEPAGE}"
+
+			KERNEL_URI="${KERNEL_URI}
+				deblob? (
+					${DEBLOB_URI}
+					${DEBLOB_CHECK_URI}
+				)"
+		else
+			# We have no way to deblob older kernels, so just mark them as
+			# tainted with non-libre materials.
+			LICENSE="${LICENSE} freedist"
+		fi
+	fi
+
+elif [[ ${ETYPE} == headers ]]; then
+	DESCRIPTION="Linux system headers"
+
+	# Since we should NOT honour KBUILD_OUTPUT in headers
+	# lets unset it here.
+	unset KBUILD_OUTPUT
+
+	SLOT="0"
+else
+	eerror "Unknown ETYPE=\"${ETYPE}\", must be \"sources\" or \"headers\""
+	die "Unknown ETYPE=\"${ETYPE}\", must be \"sources\" or \"headers\""
+fi
+
+# Cross-compile support functions
+#==============================================================
+kernel_header_destdir() {
+	[[ ${CTARGET} == ${CHOST} ]] \
+		&& echo "${EPREFIX}"/usr/include \
+		|| echo "${EPREFIX}"/usr/${CTARGET}/usr/include
+}
+
+cross_pre_c_headers() {
+	use crosscompile_opts_headers-only && [[ ${CHOST} != ${CTARGET} ]]
+}
+
+env_setup_xmakeopts() {
+	# Kernel ARCH != portage ARCH
+	export KARCH=$(tc-arch-kernel)
+
+	# When cross-compiling, we need to set the ARCH/CROSS_COMPILE
+	# variables properly or bad things happen !
+	xmakeopts="ARCH=${KARCH}"
+	if [[ ${CTARGET} != ${CHOST} ]] && ! cross_pre_c_headers ; then
+		xmakeopts="${xmakeopts} CROSS_COMPILE=${CTARGET}-"
+	elif type -p ${CHOST}-ar > /dev/null ; then
+		xmakeopts="${xmakeopts} CROSS_COMPILE=${CHOST}-"
+	fi
+	export xmakeopts
+}
+
+# Unpack functions
+#==============================================================
+unpack_2_4() {
+	# this file is required for other things to build properly,
+	# so we autogenerate it
+	make -s mrproper ${xmakeopts} || die "make mrproper failed"
+	make -s symlinks ${xmakeopts} || die "make symlinks failed"
+	make -s include/linux/version.h ${xmakeopts} || die "make include/linux/version.h failed"
+	echo ">>> version.h compiled successfully."
+}
+
+unpack_2_6() {
+	# this file is required for other things to build properly, so we
+	# autogenerate it ... generate a .config to keep version.h build from
+	# spitting out an annoying warning
+	make -s mrproper ${xmakeopts} 2>/dev/null \
+		|| die "make mrproper failed"
+
+	# quick fix for bug #132152 which triggers when it cannot include linux
+	# headers (ie, we have not installed it yet)
+	if ! make -s defconfig ${xmakeopts} &>/dev/null 2>&1 ; then
+		touch .config
+		eerror "make defconfig failed."
+		eerror "assuming you dont have any headers installed yet and continuing"
+		epause 5
+	fi
+
+	make -s include/linux/version.h ${xmakeopts} 2>/dev/null \
+		|| die "make include/linux/version.h failed"
+	rm -f .config >/dev/null
+}
+
+universal_unpack() {
+	debug-print "Inside universal_unpack"
+
+	local OKV_ARRAY
+	IFS="." read -r -a OKV_ARRAY <<<"${OKV}"
+
+	cd "${WORKDIR}"
+	if [[ ${#OKV_ARRAY[@]} -ge 3 ]] && [[ ${KV_MAJOR} -ge 3 ]]; then
+		unpack linux-${KV_MAJOR}.${KV_MINOR}.tar.xz
+	else
+		unpack linux-${OKV}.tar.xz
+	fi
+
+	if [[ -d "linux" ]]; then
+		debug-print "Moving linux to linux-${KV_FULL}"
+		mv linux linux-${KV_FULL} \
+			|| die "Unable to move source tree to ${KV_FULL}."
+	elif [[ "${OKV}" != "${KV_FULL}" ]]; then
+		if [[ ${#OKV_ARRAY[@]} -ge 3 ]] && [[ ${KV_MAJOR} -ge 3 ]] &&
+			[[ "${ETYPE}" = "sources" ]]; then
+			debug-print "moving linux-${KV_MAJOR}.${KV_MINOR} to linux-${KV_FULL} "
+			mv linux-${KV_MAJOR}.${KV_MINOR} linux-${KV_FULL} \
+				|| die "Unable to move source tree to ${KV_FULL}."
+		else
+			debug-print "moving linux-${OKV} to linux-${KV_FULL} "
+			mv linux-${OKV} linux-${KV_FULL} \
+				|| die "Unable to move source tree to ${KV_FULL}."
+		fi
+	elif [[ ${#OKV_ARRAY[@]} -ge 3 ]] && [[ ${KV_MAJOR} -ge 3 ]]; then
+		mv linux-${KV_MAJOR}.${KV_MINOR} linux-${KV_FULL} \
+			|| die "Unable to move source tree to ${KV_FULL}."
+	fi
+	cd "${S}"
+
+	# remove all backup files
+	find . -iname "*~" -exec rm {} \; 2> /dev/null
+
+}
+
+unpack_set_extraversion() {
+	cd "${S}"
+	sed -i -e "s:^\(EXTRAVERSION =\).*:\1 ${EXTRAVERSION}:" Makefile
+	cd "${OLDPWD}"
+}
+
+# Should be done after patches have been applied
+# Otherwise patches that modify the same area of Makefile will fail
+unpack_fix_install_path() {
+	cd "${S}"
+	sed	-i -e 's:#export\tINSTALL_PATH:export\tINSTALL_PATH:' Makefile
+}
+
+# Compile Functions
+#==============================================================
+compile_headers() {
+	env_setup_xmakeopts
+
+	# if we couldnt obtain HOSTCFLAGS from the Makefile,
+	# then set it to something sane
+	local HOSTCFLAGS=$(getfilevar HOSTCFLAGS "${S}"/Makefile)
+	HOSTCFLAGS=${HOSTCFLAGS:--Wall -Wstrict-prototypes -O2 -fomit-frame-pointer}
+
+	if kernel_is 2 4; then
+		yes "" | make oldconfig ${xmakeopts}
+		echo ">>> make oldconfig complete"
+		make dep ${xmakeopts}
+	elif kernel_is 2 6; then
+		# 2.6.18 introduces headers_install which means we dont need any
+		# of this crap anymore :D
+		kernel_is ge 2 6 18 && return 0
+
+		# autoconf.h isnt generated unless it already exists. plus, we have
+		# no guarantee that any headers are installed on the system...
+		[[ -f ${EROOT}/usr/include/linux/autoconf.h ]] \
+			|| touch include/linux/autoconf.h
+
+		# if K_DEFCONFIG isn't set, force to "defconfig"
+		# needed by mips
+		if [[ -z ${K_DEFCONFIG} ]]; then
+			if [[ $(KV_to_int ${KV}) -ge $(KV_to_int 2.6.16) ]]; then
+				case ${CTARGET} in
+					powerpc64*)	K_DEFCONFIG="ppc64_defconfig";;
+					powerpc*)	K_DEFCONFIG="pmac32_defconfig";;
+					*)			K_DEFCONFIG="defconfig";;
+				esac
+			else
+				K_DEFCONFIG="defconfig"
+			fi
+		fi
+
+		# if there arent any installed headers, then there also isnt an asm
+		# symlink in /usr/include/, and make defconfig will fail, so we have
+		# to force an include path with $S.
+		HOSTCFLAGS="${HOSTCFLAGS} -I${S}/include/"
+		ln -sf asm-${KARCH} "${S}"/include/asm
+		cross_pre_c_headers && return 0
+
+		make ${K_DEFCONFIG} HOSTCFLAGS="${HOSTCFLAGS}" ${xmakeopts} || die "defconfig failed (${K_DEFCONFIG})"
+		if compile_headers_tweak_config ; then
+			yes "" | make oldconfig HOSTCFLAGS="${HOSTCFLAGS}" ${xmakeopts} || die "2nd oldconfig failed"
+		fi
+		make prepare HOSTCFLAGS="${HOSTCFLAGS}" ${xmakeopts} || die "prepare failed"
+		make prepare-all HOSTCFLAGS="${HOSTCFLAGS}" ${xmakeopts} || die "prepare failed"
+	fi
+}
+
+compile_headers_tweak_config() {
+	# some targets can be very very picky, so let's finesse the
+	# .config based upon any info we may have
+	case ${CTARGET} in
+	sh*)
+		sed -i '/CONFIG_CPU_SH/d' .config
+		echo "CONFIG_CPU_SH${CTARGET:2:1}=y" >> .config
+		return 0;;
+	esac
+
+	# no changes, so lets do nothing
+	return 1
+}
+
+# install functions
+#==============================================================
+install_universal() {
+	# Fix silly permissions in tarball
+	cd "${WORKDIR}"
+	chown -R 0:0 * >& /dev/null
+	chmod -R a+r-w+X,u+w *
+	cd ${OLDPWD}
+}
+
+install_headers() {
+	local ddir=$(kernel_header_destdir)
+
+	# 2.6.18 introduces headers_install which means we dont need any
+	# of this crap anymore :D
+	if kernel_is ge 2 6 18 ; then
+		env_setup_xmakeopts
+		emake headers_install INSTALL_HDR_PATH="${D}"/${ddir}/.. ${xmakeopts} || die
+
+		# let other packages install some of these headers
+		rm -rf "${D}"/${ddir}/scsi  #glibc/uclibc/etc...
+		return 0
+	fi
+
+	# Do not use "linux/*" as that can cause problems with very long
+	# $S values where the cmdline to cp is too long
+	pushd "${S}" >/dev/null
+	dodir ${ddir#${EPREFIX}}/linux
+	cp -pPR "${S}"/include/linux "${D}"/${ddir}/ || die
+	rm -rf "${D}"/${ddir}/linux/modules
+
+	dodir ${ddir#${EPREFIX}}/asm
+	cp -pPR "${S}"/include/asm/* "${ED}"/${ddir}/asm
+
+	if kernel_is 2 6 ; then
+		dodir ${ddir#${EPREFIX}}/asm-generic
+		cp -pPR "${S}"/include/asm-generic/* "${D}"/${ddir}/asm-generic
+	fi
+
+	# clean up
+	find "${D}" -name '*.orig' -exec rm -f {} \;
+
+	popd >/dev/null
+}
+
+install_sources() {
+	local file
+
+	cd "${S}"
+	dodir /usr/src
+	echo ">>> Copying sources ..."
+
+	file="$(find ${WORKDIR} -iname "docs" -type d)"
+	if [[ -n ${file} ]]; then
+		for file in $(find ${file} -type f); do
+			echo "${file//*docs\/}" >> "${S}"/patches.txt
+			echo "===================================================" >> "${S}"/patches.txt
+			cat ${file} >> "${S}"/patches.txt
+			echo "===================================================" >> "${S}"/patches.txt
+			echo "" >> "${S}"/patches.txt
+		done
+	fi
+
+	if [[ ! -f ${S}/patches.txt ]]; then
+		# patches.txt is empty so lets use our ChangeLog
+		[[ -f ${FILESDIR}/../ChangeLog ]] && \
+			echo "Please check the ebuild ChangeLog for more details." \
+			> "${S}"/patches.txt
+	fi
+
+	mv ${WORKDIR}/linux* "${ED}"/usr/src
+
+	if [[ -n "${UNIPATCH_DOCS}" ]] ; then
+		for i in ${UNIPATCH_DOCS}; do
+			dodoc "${T}"/${i}
+		done
+	fi
+}
+
+# pkg_preinst functions
+#==============================================================
+preinst_headers() {
+	local ddir=$(kernel_header_destdir)
+	[[ -L ${ddir}/linux ]] && rm ${ddir}/linux
+	[[ -L ${ddir}/asm ]] && rm ${ddir}/asm
+}
+
+# pkg_postinst functions
+#==============================================================
+postinst_sources() {
+	local MAKELINK=0
+
+	# if we have USE=symlink, then force K_SYMLINK=1
+	use symlink && K_SYMLINK=1
+
+	# if we're using a deblobbed kernel, it's not supported
+	[[ $K_DEBLOB_AVAILABLE == 1 ]] && \
+		use deblob && \
+		K_SECURITY_UNSUPPORTED=deblob
+
+	# if we are to forcably symlink, delete it if it already exists first.
+	if [[ ${K_SYMLINK} > 0 ]]; then
+		[[ -h ${EROOT}usr/src/linux ]] && rm ${EROOT}usr/src/linux
+		MAKELINK=1
+	fi
+
+	# if the link doesnt exist, lets create it
+	[[ ! -h ${EROOT}usr/src/linux ]] && MAKELINK=1
+
+	if [[ ${MAKELINK} == 1 ]]; then
+		cd "${EROOT}"usr/src
+		ln -sf linux-${KV_FULL} linux
+		cd ${OLDPWD}
+	fi
+
+	# Don't forget to make directory for sysfs
+	[[ ! -d ${EROOT}sys ]] && kernel_is 2 6 && mkdir ${EROOT}sys
+
+	echo
+	elog "If you are upgrading from a previous kernel, you may be interested"
+	elog "in the following document:"
+	elog "  - General upgrade guide: http://www.gentoo.org/doc/en/kernel-upgrade.xml"
+	echo
+
+	# if K_EXTRAEINFO is set then lets display it now
+	if [[ -n ${K_EXTRAEINFO} ]]; then
+		echo ${K_EXTRAEINFO} | fmt |
+		while read -s ELINE; do	einfo "${ELINE}"; done
+	fi
+
+	# if K_EXTRAELOG is set then lets display it now
+	if [[ -n ${K_EXTRAELOG} ]]; then
+		echo ${K_EXTRAELOG} | fmt |
+		while read -s ELINE; do	elog "${ELINE}"; done
+	fi
+
+	# if K_EXTRAEWARN is set then lets display it now
+	if [[ -n ${K_EXTRAEWARN} ]]; then
+		echo ${K_EXTRAEWARN} | fmt |
+		while read -s ELINE; do ewarn "${ELINE}"; done
+	fi
+
+	# optionally display security unsupported message
+	#  Start with why
+	if [[ ${K_SECURITY_UNSUPPORTED} = deblob ]]; then
+		ewarn "Deblobbed kernels may not be up-to-date security-wise"
+		ewarn "as they depend on external scripts."
+	elif [[ -n ${K_SECURITY_UNSUPPORTED} ]]; then
+		ewarn "${PN} is UNSUPPORTED by Gentoo Security."
+	fi
+	#  And now the general message.
+	if [[ -n ${K_SECURITY_UNSUPPORTED} ]]; then
+		ewarn "This means that it is likely to be vulnerable to recent security issues."
+		ewarn "For specific information on why this kernel is unsupported, please read:"
+		ewarn "http://www.gentoo.org/proj/en/security/kernel.xml"
+	fi
+
+	# warn sparc users that they need to do cross-compiling with >= 2.6.25(bug #214765)
+	KV_MAJOR=$(get_version_component_range 1 ${OKV})
+	KV_MINOR=$(get_version_component_range 2 ${OKV})
+	KV_PATCH=$(get_version_component_range 3 ${OKV})
+	if [[ "$(tc-arch)" = "sparc" ]]; then
+		if [[ $(gcc-major-version) -lt 4 && $(gcc-minor-version) -lt 4 ]]; then
+			if [[ ${KV_MAJOR} -ge 3 || ${KV_MAJOR}.${KV_MINOR}.${KV_PATCH} > 2.6.24 ]] ; then
+				echo
+				elog "NOTE: Since 2.6.25 the kernel Makefile has changed in a way that"
+				elog "you now need to do"
+				elog "  make CROSS_COMPILE=sparc64-unknown-linux-gnu-"
+				elog "instead of just"
+				elog "  make"
+				elog "to compile the kernel. For more information please browse to"
+				elog "https://bugs.gentoo.org/show_bug.cgi?id=214765"
+				echo
+			fi
+		fi
+	fi
+}
+
+# pkg_setup functions
+#==============================================================
+setup_headers() {
+	[[ -z ${H_SUPPORTEDARCH} ]] && H_SUPPORTEDARCH=${PN/-*/}
+	for i in ${H_SUPPORTEDARCH}; do
+		[[ $(tc-arch) == "${i}" ]] && H_ACCEPT_ARCH="yes"
+	done
+
+	if [[ ${H_ACCEPT_ARCH} != "yes" ]]; then
+		echo
+		eerror "This version of ${PN} does not support $(tc-arch)."
+		eerror "Please merge the appropriate sources, in most cases"
+		eerror "(but not all) this will be called $(tc-arch)-headers."
+		die "Package unsupported for $(tc-arch)"
+	fi
+}
+
+# unipatch
+#==============================================================
+unipatch() {
+	local i x y z extention PIPE_CMD UNIPATCH_DROP KPATCH_DIR PATCH_DEPTH ELINE
+	local STRICT_COUNT PATCH_LEVEL myLC_ALL myLANG
+
+	# set to a standard locale to ensure sorts are ordered properly.
+	myLC_ALL="${LC_ALL}"
+	myLANG="${LANG}"
+	LC_ALL="C"
+	LANG=""
+
+	[ -z "${KPATCH_DIR}" ] && KPATCH_DIR="${WORKDIR}/patches/"
+	[ ! -d ${KPATCH_DIR} ] && mkdir -p ${KPATCH_DIR}
+
+	# We're gonna need it when doing patches with a predefined patchlevel
+	eshopts_push -s extglob
+
+	# This function will unpack all passed tarballs, add any passed patches, and remove any passed patchnumbers
+	# usage can be either via an env var or by params
+	# although due to the nature we pass this within this eclass
+	# it shall be by param only.
+	# -z "${UNIPATCH_LIST}" ] && UNIPATCH_LIST="${@}"
+	UNIPATCH_LIST="${@}"
+
+	#unpack any passed tarballs
+	for i in ${UNIPATCH_LIST}; do
+		if echo ${i} | grep -qs -e "\.tar" -e "\.tbz" -e "\.tgz" ; then
+			if [ -n "${UNIPATCH_STRICTORDER}" ]; then
+				unset z
+				STRICT_COUNT=$((10#${STRICT_COUNT} + 1))
+				for((y=0; y<$((6 - ${#STRICT_COUNT})); y++));
+					do z="${z}0";
+				done
+				PATCH_ORDER="${z}${STRICT_COUNT}"
+
+				mkdir -p "${KPATCH_DIR}/${PATCH_ORDER}"
+				pushd "${KPATCH_DIR}/${PATCH_ORDER}" >/dev/null
+				unpack ${i##*/}
+				popd >/dev/null
+			else
+				pushd "${KPATCH_DIR}" >/dev/null
+				unpack ${i##*/}
+				popd >/dev/null
+			fi
+
+			[[ ${i} == *:* ]] && echo ">>> Strict patch levels not currently supported for tarballed patchsets"
+		else
+			extention=${i/*./}
+			extention=${extention/:*/}
+			PIPE_CMD=""
+			case ${extention} in
+				     xz) PIPE_CMD="xz -dc";;
+				   lzma) PIPE_CMD="lzma -dc";;
+				    bz2) PIPE_CMD="bzip2 -dc";;
+				 patch*) PIPE_CMD="cat";;
+				   diff) PIPE_CMD="cat";;
+				 gz|Z|z) PIPE_CMD="gzip -dc";;
+				ZIP|zip) PIPE_CMD="unzip -p";;
+				      *) UNIPATCH_DROP="${UNIPATCH_DROP} ${i/:*/}";;
+			esac
+
+			PATCH_LEVEL=${i/*([^:])?(:)}
+			i=${i/:*/}
+			x=${i/*\//}
+			x=${x/\.${extention}/}
+
+			if [ -n "${PIPE_CMD}" ]; then
+				if [ ! -r "${i}" ]; then
+					echo
+					eerror "FATAL: unable to locate:"
+					eerror "${i}"
+					eerror "for read-only. The file either has incorrect permissions"
+					eerror "or does not exist."
+					die Unable to locate ${i}
+				fi
+
+				if [ -n "${UNIPATCH_STRICTORDER}" ]; then
+					unset z
+					STRICT_COUNT=$((10#${STRICT_COUNT} + 1))
+					for((y=0; y<$((6 - ${#STRICT_COUNT})); y++));
+						do z="${z}0";
+					done
+					PATCH_ORDER="${z}${STRICT_COUNT}"
+
+					mkdir -p ${KPATCH_DIR}/${PATCH_ORDER}/
+					$(${PIPE_CMD} ${i} > ${KPATCH_DIR}/${PATCH_ORDER}/${x}.patch${PATCH_LEVEL}) || die "uncompressing patch failed"
+				else
+					$(${PIPE_CMD} ${i} > ${KPATCH_DIR}/${x}.patch${PATCH_LEVEL}) || die "uncompressing patch failed"
+				fi
+			fi
+		fi
+
+		# If experimental was not chosen by the user, drop experimental patches not in K_EXP_GENPATCHES_LIST.
+		if [[ "${i}" == *"genpatches-"*".experimental."* && -n ${K_EXP_GENPATCHES_PULL} ]] ; then
+			if [[ -z ${K_EXP_GENPATCHES_NOUSE} ]] && use experimental; then
+				continue
+			fi
+
+			local j
+			for j in ${KPATCH_DIR}/*/50*_*.patch*; do
+				for k in ${K_EXP_GENPATCHES_LIST} ; do
+					[[ "$(basename ${j})" == ${k}* ]] && continue 2
+				done
+				UNIPATCH_DROP+=" $(basename ${j})"
+			done
+		fi
+	done
+
+	#populate KPATCH_DIRS so we know where to look to remove the excludes
+	x=${KPATCH_DIR}
+	KPATCH_DIR=""
+	for i in $(find ${x} -type d | sort -n); do
+		KPATCH_DIR="${KPATCH_DIR} ${i}"
+	done
+
+	# do not apply fbcondecor patch to sparc/sparc64 as it breaks boot
+	# bug #272676
+	if [[ "$(tc-arch)" = "sparc" || "$(tc-arch)" = "sparc64" ]]; then
+		if [[ ${KV_MAJOR} -ge 3 || ${KV_MAJOR}.${KV_MINOR}.${KV_PATCH} > 2.6.28 ]]; then
+			UNIPATCH_DROP="${UNIPATCH_DROP} *_fbcondecor-0.9.6.patch"
+			echo
+			ewarn "fbcondecor currently prevents sparc/sparc64 from booting"
+			ewarn "for kernel versions >= 2.6.29. Removing fbcondecor patch."
+			ewarn "See https://bugs.gentoo.org/show_bug.cgi?id=272676 for details"
+			echo
+		fi
+	fi
+
+	#so now lets get rid of the patchno's we want to exclude
+	UNIPATCH_DROP="${UNIPATCH_EXCLUDE} ${UNIPATCH_DROP}"
+	for i in ${UNIPATCH_DROP}; do
+		ebegin "Excluding Patch #${i}"
+		for x in ${KPATCH_DIR}; do rm -f ${x}/${i}* 2>/dev/null; done
+		eend $?
+	done
+
+	# and now, finally, we patch it :)
+	for x in ${KPATCH_DIR}; do
+		for i in $(find ${x} -maxdepth 1 -iname "*.patch*" -or -iname "*.diff*" | sort -n); do
+			STDERR_T="${T}/${i/*\//}"
+			STDERR_T="${STDERR_T/.patch*/.err}"
+
+			[ -z ${i/*.patch*/} ] && PATCH_DEPTH=${i/*.patch/}
+			#[ -z ${i/*.diff*/} ]  && PATCH_DEPTH=${i/*.diff/}
+
+			if [ -z "${PATCH_DEPTH}" ]; then PATCH_DEPTH=0; fi
+
+			####################################################################
+			# IMPORTANT: This is temporary code to support Linux git 3.15_rc1! #
+			#                                                                  #
+			# The patch contains a removal of a symlink, followed by addition  #
+			# of a file with the same name as the symlink in the same          #
+			# location; this causes the dry-run to fail, filed bug #507656.    #
+			#                                                                  #
+			# https://bugs.gentoo.org/show_bug.cgi?id=507656                   #
+			####################################################################
+			if [[ ${PN} == "git-sources" ]] ; then
+				if [[ ${KV_MAJOR}${KV_PATCH} -ge 315 && ${RELEASETYPE} == -rc ]] ; then
+					ebegin "Applying ${i/*\//} (-p1)"
+					if [ $(patch -p1 --no-backup-if-mismatch -f < ${i} >> ${STDERR_T}) "$?" -eq 0 ]; then
+						eend 0
+						rm ${STDERR_T}
+						break
+					else
+						eend 1
+						eerror "Failed to apply patch ${i/*\//}"
+						eerror "Please attach ${STDERR_T} to any bug you may post."
+						eshopts_pop
+						die "Failed to apply ${i/*\//} on patch depth 1."
+					fi
+				fi
+			fi
+			####################################################################
+
+			while [ ${PATCH_DEPTH} -lt 5 ]; do
+				echo "Attempting Dry-run:" >> ${STDERR_T}
+				echo "cmd: patch -p${PATCH_DEPTH} --no-backup-if-mismatch --dry-run -f < ${i}" >> ${STDERR_T}
+				echo "=======================================================" >> ${STDERR_T}
+				if [ $(patch -p${PATCH_DEPTH} --no-backup-if-mismatch --dry-run -f < ${i} >> ${STDERR_T}) $? -eq 0 ]; then
+					ebegin "Applying ${i/*\//} (-p${PATCH_DEPTH})"
+					echo "Attempting patch:" > ${STDERR_T}
+					echo "cmd: patch -p${PATCH_DEPTH} --no-backup-if-mismatch -f < ${i}" >> ${STDERR_T}
+					echo "=======================================================" >> ${STDERR_T}
+					if [ $(patch -p${PATCH_DEPTH} --no-backup-if-mismatch -f < ${i} >> ${STDERR_T}) "$?" -eq 0 ]; then
+						eend 0
+						rm ${STDERR_T}
+						break
+					else
+						eend 1
+						eerror "Failed to apply patch ${i/*\//}"
+						eerror "Please attach ${STDERR_T} to any bug you may post."
+						eshopts_pop
+						die "Failed to apply ${i/*\//} on patch depth ${PATCH_DEPTH}."
+					fi
+				else
+					PATCH_DEPTH=$((${PATCH_DEPTH} + 1))
+				fi
+			done
+			if [ ${PATCH_DEPTH} -eq 5 ]; then
+				eerror "Failed to dry-run patch ${i/*\//}"
+				eerror "Please attach ${STDERR_T} to any bug you may post."
+				eshopts_pop
+				die "Unable to dry-run patch on any patch depth lower than 5."
+			fi
+		done
+	done
+
+	# When genpatches is used, we want to install 0000_README which documents
+	# the patches that were used; such that the user can see them, bug #301478.
+	if [[ ! -z ${K_WANT_GENPATCHES} ]] ; then
+		UNIPATCH_DOCS="${UNIPATCH_DOCS} 0000_README"
+	fi
+
+	# When files listed in UNIPATCH_DOCS are found in KPATCH_DIR's, we copy it
+	# to the temporary directory and remember them in UNIPATCH_DOCS to install
+	# them during the install phase.
+	local tmp
+	for x in ${KPATCH_DIR}; do
+		for i in ${UNIPATCH_DOCS}; do
+			if [[ -f "${x}/${i}" ]] ; then
+				tmp="${tmp} ${i}"
+				cp -f "${x}/${i}" "${T}"/
+			fi
+		done
+	done
+	UNIPATCH_DOCS="${tmp}"
+
+	# clean up  KPATCH_DIR's - fixes bug #53610
+	for x in ${KPATCH_DIR}; do rm -Rf ${x}; done
+
+	LC_ALL="${myLC_ALL}"
+	LANG="${myLANG}"
+	eshopts_pop
+}
+
+# getfilevar accepts 2 vars as follows:
+# getfilevar <VARIABLE> <CONFIGFILE>
+# pulled from linux-info
+
+getfilevar() {
+	local workingdir basefname basedname xarch=$(tc-arch-kernel)
+
+	if [[ -z ${1} ]] && [[ ! -f ${2} ]]; then
+		echo -e "\n"
+		eerror "getfilevar requires 2 variables, with the second a valid file."
+		eerror "   getfilevar <VARIABLE> <CONFIGFILE>"
+	else
+		workingdir=${PWD}
+		basefname=$(basename ${2})
+		basedname=$(dirname ${2})
+		unset ARCH
+
+		cd ${basedname}
+		echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
+			make ${BUILD_FIXES} -s -f - e 2>/dev/null
+		cd ${workingdir}
+
+		ARCH=${xarch}
+	fi
+}
+
+detect_arch() {
+	# This function sets ARCH_URI and ARCH_PATCH
+	# with the neccessary info for the arch sepecific compatibility
+	# patchsets.
+
+	local ALL_ARCH LOOP_ARCH COMPAT_URI i
+
+	# COMPAT_URI is the contents of ${ARCH}_URI
+	# ARCH_URI is the URI for all the ${ARCH}_URI patches
+	# ARCH_PATCH is ARCH_URI broken into files for UNIPATCH
+
+	ARCH_URI=""
+	ARCH_PATCH=""
+	ALL_ARCH="ALPHA AMD64 ARM HPPA IA64 M68K MIPS PPC PPC64 S390 SH SPARC X86"
+
+	for LOOP_ARCH in ${ALL_ARCH}; do
+		COMPAT_URI="${LOOP_ARCH}_URI"
+		COMPAT_URI="${!COMPAT_URI}"
+
+		[[ -n ${COMPAT_URI} ]] && \
+			ARCH_URI="${ARCH_URI} $(echo ${LOOP_ARCH} | tr '[:upper:]' '[:lower:]')? ( ${COMPAT_URI} )"
+
+		if [[ ${LOOP_ARCH} == "$(echo $(tc-arch-kernel) | tr '[:lower:]' '[:upper:]')" ]]; 	then
+			for i in ${COMPAT_URI}; do
+				ARCH_PATCH="${ARCH_PATCH} ${DISTDIR}/${i/*\//}"
+			done
+		fi
+	done
+}
+
+headers___fix() {
+	# Voodoo to partially fix broken upstream headers.
+	# note: do not put inline/asm/volatile together (breaks "inline asm volatile")
+	sed -i \
+		-e '/^\#define.*_TYPES_H/{:loop n; bloop}' \
+		-e 's:\<\([us]\(8\|16\|32\|64\)\)\>:__\1:g' \
+		-e "s/\([[:space:]]\)inline\([[:space:](]\)/\1__inline__\2/g" \
+		-e "s/\([[:space:]]\)asm\([[:space:](]\)/\1__asm__\2/g" \
+		-e "s/\([[:space:]]\)volatile\([[:space:](]\)/\1__volatile__\2/g" \
+		"$@"
+}
+
+# common functions
+#==============================================================
+kernel-2_src_unpack() {
+	universal_unpack
+	debug-print "Doing unipatch"
+
+	[[ -n ${UNIPATCH_LIST} || -n ${UNIPATCH_LIST_DEFAULT} || -n ${UNIPATCH_LIST_GENPATCHES} ]] && \
+		unipatch "${UNIPATCH_LIST_DEFAULT} ${UNIPATCH_LIST_GENPATCHES} ${UNIPATCH_LIST}"
+
+	debug-print "Doing premake"
+
+	# allow ebuilds to massage the source tree after patching but before
+	# we run misc `make` functions below
+	[[ $(type -t kernel-2_hook_premake) == "function" ]] && kernel-2_hook_premake
+
+	debug-print "Doing epatch_user"
+	epatch_user
+
+	debug-print "Doing unpack_set_extraversion"
+
+	[[ -z ${K_NOSETEXTRAVERSION} ]] && unpack_set_extraversion
+	unpack_fix_install_path
+
+	# Setup xmakeopts and cd into sourcetree.
+	env_setup_xmakeopts
+	cd "${S}"
+
+	# We dont need a version.h for anything other than headers
+	# at least, I should hope we dont. If this causes problems
+	# take out the if/fi block and inform me please.
+	# unpack_2_6 should now be 2.6.17 safe anyways
+	if [[ ${ETYPE} == headers ]]; then
+		kernel_is 2 4 && unpack_2_4
+		kernel_is 2 6 && unpack_2_6
+	fi
+
+	if [[ $K_DEBLOB_AVAILABLE == 1 ]] && use deblob ; then
+		cp "${DISTDIR}/${DEBLOB_A}" "${T}" || die "cp ${DEBLOB_A} failed"
+		cp "${DISTDIR}/${DEBLOB_CHECK_A}" "${T}/deblob-check" || die "cp ${DEBLOB_CHECK_A} failed"
+		chmod +x "${T}/${DEBLOB_A}" "${T}/deblob-check" || die "chmod deblob scripts failed"
+	fi
+
+	# fix a problem on ppc where TOUT writes to /usr/src/linux breaking sandbox
+	# only do this for kernel < 2.6.27 since this file does not exist in later
+	# kernels
+	if [[ -n ${KV_MINOR} &&  ${KV_MAJOR}.${KV_MINOR}.${KV_PATCH} < 2.6.27 ]] ; then
+		sed -i \
+			-e 's|TOUT      := .tmp_gas_check|TOUT  := $(T).tmp_gas_check|' \
+			"${S}"/arch/ppc/Makefile
+	else
+		sed -i \
+			-e 's|TOUT      := .tmp_gas_check|TOUT  := $(T).tmp_gas_check|' \
+			"${S}"/arch/powerpc/Makefile
+	fi
+}
+
+kernel-2_src_compile() {
+	cd "${S}"
+	[[ ${ETYPE} == headers ]] && compile_headers
+
+	if [[ $K_DEBLOB_AVAILABLE == 1 ]] && use deblob ; then
+		echo ">>> Running deblob script ..."
+		python_setup
+		sh "${T}/${DEBLOB_A}" --force || die "Deblob script failed to run!!!"
+	fi
+}
+
+# if you leave it to the default src_test, it will run make to
+# find whether test/check targets are present; since "make test"
+# actually produces a few support files, they are installed even
+# though the package is binchecks-restricted.
+#
+# Avoid this altogether by making the function moot.
+kernel-2_src_test() { :; }
+
+kernel-2_pkg_preinst() {
+	[[ ${ETYPE} == headers ]] && preinst_headers
+}
+
+kernel-2_src_install() {
+	install_universal
+	[[ ${ETYPE} == headers ]] && install_headers
+	[[ ${ETYPE} == sources ]] && install_sources
+}
+
+kernel-2_pkg_postinst() {
+	[[ ${ETYPE} == sources ]] && postinst_sources
+}
+
+kernel-2_pkg_setup() {
+	if kernel_is 2 4; then
+		if [[ $(gcc-major-version) -ge 4 ]] ; then
+			echo
+			ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with linux-2.4!"
+			ewarn "Either switch to another gcc-version (via gcc-config) or use a"
+			ewarn "newer kernel that supports gcc-4."
+			echo
+			ewarn "Also be aware that bugreports about gcc-4 not working"
+			ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
+			echo
+			epause 10
+		fi
+	fi
+
+	ABI="${KERNEL_ABI}"
+	[[ ${ETYPE} == headers ]] && setup_headers
+	[[ ${ETYPE} == sources ]] && echo ">>> Preparing to unpack ..."
+}
+
+kernel-2_pkg_postrm() {
+	# This warning only makes sense for kernel sources.
+	[[ ${ETYPE} == headers ]] && return 0
+
+	# If there isn't anything left behind, then don't complain.
+	[[ -e ${EROOT}usr/src/linux-${KV_FULL} ]] || return 0
+	echo
+	ewarn "Note: Even though you have successfully unmerged "
+	ewarn "your kernel package, directories in kernel source location: "
+	ewarn "${EROOT}usr/src/linux-${KV_FULL}"
+	ewarn "with modified files will remain behind. By design, package managers"
+	ewarn "will not remove these modified files and the directories they reside in."
+	echo
+}