track.

toolchain.eclass refresh before commit.

4 files changed, 3930 insertions, 40 deletions

diff --git a/eclass/R-packages.eclass b/eclass/R-packages.eclass
new file mode 100644
index 0000000..cea7eba
--- /dev/null
+++ b/eclass/R-packages.eclass
@@ -0,0 +1,51 @@
+# Copyright 1999-2012 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+inherit eutils
+
+EXPORT_FUNCTIONS src_unpack src_prepare src_compile src_install pkg_postinst
+
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="byte-compile"
+
+DEPEND="dev-lang/R"
+RDEPEND="${DEPEND}"
+
+S="${WORKDIR}"
+
+R-packages_src_unpack() {
+	unpack ${A}
+	mv ${PN//_/.} ${P}
+}
+
+R-packages_src_prepare() {
+	cd ${P}
+	epatch_user
+}
+
+R-packages_src_compile() {
+	einfo "R CMD INSTALL ${S}/${P} -l . $(use byte-compile && echo --byte-compile)"
+	MAKEFLAGS="CFLAGS=${CFLAGS// /\\ } CXXFLAGS=${CXXFLAGS// /\\ } FFLAGS=${FFLAGS// /\\ } FCFLAGS=${FCFLAGS// /\\ } LDFLAGS=${LDFLAGS// /\\ }" \
+		R CMD INSTALL ${S}/${P} -l . $(use byte-compile && echo --byte-compile)
+}
+
+R-packages_src_install() {
+	insinto /usr/$(get_libdir)/R/site-library
+	doins -r ${PN//_/.}
+}
+
+R-packages_pkg_postinst() {
+	if [[ "${_UNRESOLVABLE_PACKAGES:-}" ]]; then
+		# _UNRESOLVABLE_PACKAGES is only set if it has more than zero items
+		local _max=${#_UNRESOLVABLE_PACKAGES[*]} i=
+
+		einfo "Dependency(-ies):"
+		for (( i=0; i<${_max}; i++ )); do
+			einfo "- ${_UNRESOLVABLE_PACKAGES[$i]}"
+		done
+		einfo 'are (is) suggested by upstream but could not be found.'
+		einfo 'Please install it manually from the R interpreter if you need it.'
+	fi
+}
diff --git a/eclass/java-utils-2.eclass b/eclass/java-utils-2.eclass
new file mode 100644
index 0000000..b4246b3
--- /dev/null
+++ b/eclass/java-utils-2.eclass
@@ -0,0 +1,2888 @@
+# Copyright 2004-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# @ECLASS: java-utils-2.eclass
+# @MAINTAINER:
+# java@gentoo.org
+# @AUTHOR:
+# Thomas Matthijs <axxo@gentoo.org>, Karl Trygve Kalleberg <karltk@gentoo.org>
+# @BLURB: Base eclass for Java packages
+# @DESCRIPTION:
+# This eclass provides functionality which is used by java-pkg-2.eclass,
+# java-pkg-opt-2.eclass and java-ant-2 eclass, as well as from ebuilds.
+#
+# This eclass should not be inherited this directly from an ebuild. Instead,
+# you should inherit java-pkg-2 for Java packages or java-pkg-opt-2 for packages
+# that have optional Java support. In addition you can inherit java-ant-2 for
+# Ant-based packages.
+inherit eutils versionator multilib
+
+IUSE="elibc_FreeBSD"
+
+# Make sure we use java-config-2
+export WANT_JAVA_CONFIG="2"
+
+# @VARIABLE: JAVA_PKG_PORTAGE_DEP
+# @INTERNAL
+# @DESCRIPTION:
+# The version of portage we need to function properly. Previously it was
+# portage with phase hooks support but now we use a version with proper env
+# saving. For EAPI 2 we have new enough stuff so let's have cleaner deps.
+has "${EAPI}" 0 1 && JAVA_PKG_PORTAGE_DEP=">=sys-apps/portage-2.1.2.7"
+
+# @VARIABLE: JAVA_PKG_E_DEPEND
+# @INTERNAL
+# @DESCRIPTION:
+# This is a convience variable to be used from the other java eclasses. This is
+# the version of java-config we want to use. Usually the latest stable version
+# so that ebuilds can use new features without depending on specific versions.
+JAVA_PKG_E_DEPEND=">=dev-java/java-config-2.2.0-r3 ${JAVA_PKG_PORTAGE_DEP}"
+has source ${JAVA_PKG_IUSE} && JAVA_PKG_E_DEPEND="${JAVA_PKG_E_DEPEND} source? ( app-arch/zip )"
+
+# @ECLASS-VARIABLE: JAVA_PKG_WANT_BOOTCLASSPATH
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# The version of bootclasspath the package needs to work. Translates to a proper
+# dependency. The bootclasspath can then be obtained by java-ant_rewrite-bootclasspath
+if [[ -n "${JAVA_PKG_WANT_BOOTCLASSPATH}" ]]; then
+	if [[ "${JAVA_PKG_WANT_BOOTCLASSPATH}" == "1.5" ]]; then
+		JAVA_PKG_E_DEPEND="${JAVA_PKG_E_DEPEND} >=dev-java/gnu-classpath-0.98-r1:0.98"
+	else
+		eerror "Unknown value of JAVA_PKG_WANT_BOOTCLASSPATH"
+		# since die in global scope doesn't work, this will make repoman fail
+		JAVA_PKG_E_DEPEND="${JAVA_PKG_E_DEPEND} BAD_JAVA_PKG_WANT_BOOTCLASSPATH"
+	fi
+fi
+
+# @ECLASS-VARIABLE: JAVA_PKG_ALLOW_VM_CHANGE
+# @DESCRIPTION:
+# Allow this eclass to change the active VM?
+# If your system VM isn't sufficient for the package, the build will fail
+# instead of trying to switch to another VM.
+#
+# Overriding the default can be useful for testing specific VMs locally, but
+# should not be used in the final ebuild.
+JAVA_PKG_ALLOW_VM_CHANGE=${JAVA_PKG_ALLOW_VM_CHANGE:="yes"}
+
+# @ECLASS-VARIABLE: JAVA_PKG_FORCE_VM
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Explicitly set a particular VM to use. If its not valid, it'll fall back to
+# whatever /etc/java-config-2/build/jdk.conf would elect to use.
+#
+# Should only be used for testing and debugging.
+#
+# Example: use sun-jdk-1.5 to emerge foo:
+# @CODE
+#	JAVA_PKG_FORCE_VM=sun-jdk-1.5 emerge foo
+# @CODE
+
+# @ECLASS-VARIABLE: JAVA_PKG_WANT_BUILD_VM
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# A list of VM handles to choose a build VM from. If the list contains the
+# currently active VM use that one, otherwise step through the list till a
+# usable/installed VM is found.
+#
+# This allows to use an explicit list of JDKs in DEPEND instead of a virtual.
+# Users of this variable must make sure at least one of the listed handles is
+# covered by DEPEND.
+# Requires JAVA_PKG_WANT_SOURCE and JAVA_PKG_WANT_TARGET to be set as well.
+
+# @ECLASS-VARIABLE: JAVA_PKG_WANT_SOURCE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Specify a non-standard Java source version for compilation (via javac -source
+# parameter or Ant equivalent via build.xml rewriting done by java-ant-2 eclass).
+# Normally this is determined from the jdk version specified in DEPEND.
+# See java-pkg_get-source function below.
+#
+# Should generally only be used for testing and debugging.
+#
+# Use 1.4 source to emerge baz
+# @CODE
+#	JAVA_PKG_WANT_SOURCE=1.4 emerge baz
+# @CODE
+
+# @ECLASS-VARIABLE: JAVA_PKG_WANT_TARGET
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Same as JAVA_PKG_WANT_SOURCE (see above) but for javac -target parameter,
+# which affects the version of generated bytecode.
+# Normally this is determined from the jre/jdk version specified in RDEPEND.
+# See java-pkg_get-target function below.
+#
+# Should generallyonly be used for testing and debugging.
+#
+# emerge bar to be compatible with 1.3
+# @CODE
+#	JAVA_PKG_WANT_TARGET=1.3 emerge bar
+# @CODE
+
+# @ECLASS-VARIABLE: JAVA_PKG_DEBUG
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# A variable to be set with "yes" or "y", or ANY string of length non equal to
+# zero. When set, verbosity across java eclasses is increased and extra
+# logging is displayed.
+# @CODE
+#	JAVA_PKG_DEBUG="yes"
+# @CODE
+
+# @ECLASS-VARIABLE: JAVA_RM_FILES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# An array containing a list of files to remove. If defined, this array will be
+# automatically handed over to java-pkg_rm_files for processing during the
+# src_prepare phase.
+#
+# @CODE
+#	JAVA_RM_FILES=(
+#		path/to/File1.java
+#		DELETEME.txt
+#	)
+# @CODE
+
+# @VARIABLE: JAVA_PKG_COMPILER_DIR
+# @INTERNAL
+# @DESCRIPTION:
+# Directory where compiler settings are saved, without trailing slash.
+# You probably shouldn't touch this variable except local testing.
+JAVA_PKG_COMPILER_DIR=${JAVA_PKG_COMPILER_DIR:="/usr/share/java-config-2/compiler"}
+
+# @VARIABLE: JAVA_PKG_COMPILERS_CONF
+# @INTERNAL
+# @DESCRIPTION:
+# Path to file containing information about which compiler to use.
+# Can be overloaded, but it should be overloaded only for local testing.
+JAVA_PKG_COMPILERS_CONF=${JAVA_PKG_COMPILERS_CONF:="/etc/java-config-2/build/compilers.conf"}
+
+# @ECLASS-VARIABLE: JAVA_PKG_FORCE_COMPILER
+# @INTERNAL
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Explicitly set a list of compilers to choose from. This is normally read from
+# JAVA_PKG_COMPILERS_CONF.
+#
+# Useful for local testing.
+#
+# Use jikes and javac, in that order
+# @CODE
+#	JAVA_PKG_FORCE_COMPILER="jikes javac"
+# @CODE
+
+# @ECLASS-VARIABLE: JAVA_PKG_FORCE_ANT_TASKS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# An $IFS separated list of ant tasks. Can be set in environment before calling
+# emerge/ebuild to override variables set in ebuild, mainly for testing before
+# putting the resulting (WANT_)ANT_TASKS into ebuild. Affects only ANT_TASKS in
+# eant() call, not the dependencies specified in WANT_ANT_TASKS.
+#
+# @CODE
+# JAVA_PKG_FORCE_ANT_TASKS="ant-junit ant-trax" \
+# 	ebuild foo.ebuild compile
+# @CODE
+
+# TODO document me
+JAVA_PKG_QA_VIOLATIONS=0
+
+# @FUNCTION: java-pkg_doexamples
+# @USAGE: [--subdir <subdir>] <file1/dir1> [<file2> ...]
+# @DESCRIPTION:
+# Installs given arguments to /usr/share/doc/${PF}/examples
+# If you give it only one parameter and it is a directory it will install
+# everything in that directory to the examples directory.
+#
+# @CODE
+# Parameters:
+# --subdir - If the examples need a certain directory structure
+# $* - list of files to install
+#
+# Examples:
+#	java-pkg_doexamples demo
+#	java-pkg_doexamples demo/* examples/*
+# @CODE
+java-pkg_doexamples() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 1 ]] && die "At least one argument needed"
+
+	java-pkg_check-phase install
+	java-pkg_init_paths_
+
+	local dest=/usr/share/doc/${PF}/examples
+	if [[ ${1} == --subdir ]]; then
+		local dest=${dest}/${2}
+		dodir ${dest}
+		shift 2
+	fi
+
+	if [[ ${#} = 1 && -d ${1} ]]; then
+		( # dont want to pollute calling env
+			insinto "${dest}"
+			doins -r ${1}/*
+		) || die "Installing examples failed"
+	else
+		( # dont want to pollute calling env
+			insinto "${dest}"
+			doins -r "$@"
+		) || die "Installing examples failed"
+	fi
+
+	# Let's make a symlink to the directory we have everything else under
+	dosym "${dest}" "${JAVA_PKG_SHAREPATH}/examples" || die
+}
+
+# @FUNCTION: java-pkg_addres
+# @USAGE: <jar> <dir> [<find arguments> ...]
+# @DESCRIPTION:
+# Adds resource files to an existing jar.
+# It is important that the directory given is actually the root of the
+# corresponding resource tree. The target directory as well as
+# sources.lst, MANIFEST.MF, *.class, *.jar, and *.java files are
+# automatically excluded. Symlinks are always followed. Additional
+# arguments are passed through to find.
+#
+# @CODE
+#	java-pkg_addres ${PN}.jar resources ! -name "*.html"
+# @CODE
+#
+# @param $1 - jar file
+# @param $2 - resource tree directory
+# @param $* - arguments to pass to find
+java-pkg_addres() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 2 ]] && die "at least two arguments needed"
+
+	local jar=$(realpath "$1" || die "realpath $1 failed")
+	local dir="$2"
+	shift 2
+
+	pushd "${dir}" > /dev/null || die "pushd ${dir} failed"
+	find -L -type f ! -path "./target/*" ! -path "./sources.lst" ! -name "MANIFEST.MF" ! -regex ".*\.\(class\|jar\|java\)" "${@}" -print0 | xargs -r0 jar uf "${jar}" || die "jar failed"
+	popd > /dev/null || die "popd failed"
+}
+
+# @FUNCTION: java-pkg_rm_files
+# @USAGE: java-pkg_rm_files File1.java File2.java ...
+# @DESCRIPTION:
+# Remove unneeded files in ${S}.
+#
+# Every now and then, you'll run into situations whereby a file needs removing,
+# be it a unit test or a regular java class.
+#
+# You can use this function by either:
+# - calling it yourself in java_prepare() and feeding java-pkg_rm_files with
+# the list of files you wish to remove.
+# - defining an array in the ebuild named JAVA_RM_FILES with the list of files
+# you wish to remove.
+#
+# Both way work and it is left to the developer's preferences. If the
+# JAVA_RM_FILES array is defined, it will be automatically handed over to
+# java-pkg_rm_files during the src_prepare phase.
+#
+# See java-utils-2_src_prepare.
+#
+# @CODE
+#	java-pkg_rm_files File1.java File2.java
+# @CODE
+#
+# @param $* - list of files to remove.
+java-pkg_rm_files() {
+	debug-print-function ${FUNCNAME} $*
+	local IFS="\n"
+	for filename in "$@"; do
+		[[ ! -f "${filename}" ]] && die "${filename} is not a regular file. Aborting."
+		einfo "Removing unneeded file ${filename}"
+		rm -f "${S}/${filename}" || die "cannot remove ${filename}"
+		eend $?
+	done
+}
+
+# @FUNCTION: java-pkg_dojar
+# @USAGE: <jar1> [<jar2> ...]
+# @DESCRIPTION:
+# Installs any number of jars.
+# Jar's will be installed into /usr/share/${PN}(-${SLOT})/lib/ by default.
+# You can use java-pkg_jarinto to change this path.
+# You should never install a jar with a package version in the filename.
+# Instead, use java-pkg_newjar defined below.
+#
+# @CODE
+#	java-pkg_dojar dist/${PN}.jar dist/${PN}-core.jar
+# @CODE
+#
+# @param $* - list of jars to install
+java-pkg_dojar() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 1 ]] && die "At least one argument needed"
+
+	java-pkg_check-phase install
+	java-pkg_init_paths_
+
+	# Create JARDEST if it doesn't exist
+	dodir ${JAVA_PKG_JARDEST}
+
+	local jar
+	# for each jar
+	for jar in "${@}"; do
+		local jar_basename=$(basename "${jar}")
+
+		java-pkg_check-versioned-jar ${jar_basename}
+
+		# check if it exists
+		if [[ -e "${jar}" ]] ; then
+			# Don't overwrite if jar has already been installed with the same
+			# name
+			local dest="${ED}${JAVA_PKG_JARDEST}/${jar_basename}"
+			if [[ -e "${dest}" ]]; then
+				ewarn "Overwriting ${dest}"
+			fi
+
+			# install it into JARDEST if it's a non-symlink
+			if [[ ! -L "${jar}" ]] ; then
+				#but first check class version when in strict mode.
+				is-java-strict && java-pkg_verify-classes "${jar}"
+
+				(
+					insinto "${JAVA_PKG_JARDEST}"
+					doins "${jar}"
+				) || die "failed to install ${jar}"
+				java-pkg_append_ JAVA_PKG_CLASSPATH "${EPREFIX}/${JAVA_PKG_JARDEST}/${jar_basename}"
+				debug-print "installed ${jar} to ${ED}${JAVA_PKG_JARDEST}"
+			# make a symlink to the original jar if it's symlink
+			else
+				# TODO use dosym, once we find something that could use it
+				# -nichoj
+				ln -s "$(readlink "${jar}")" "${ED}${JAVA_PKG_JARDEST}/${jar_basename}"
+				debug-print "${jar} is a symlink, linking accordingly"
+			fi
+		else
+			die "${jar} does not exist"
+		fi
+	done
+
+	# Extra logging if enabled.
+	if [[ -n ${JAVA_PKG_DEBUG} ]]; then
+		einfo "Verbose logging for \"${FUNCNAME}\" function"
+		einfo "Jar file(s) destination: ${JAVA_PKG_JARDEST}"
+		einfo "Jar file(s) created: ${@}"
+		einfo "Complete command:"
+		einfo "${FUNCNAME} ${@}"
+	fi
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_regjar
+# @USAGE: </path/to/installed/jar>
+# @DESCRIPTION:
+# Records an already installed (in ${D}) jar in the package.env
+# This would mostly be used if the package has make or a custom script to
+# install things.
+#
+# WARNING:
+# if you want to use shell expansion, you have to use ${D}/... as the for in
+# this function will not be able to expand the path, here's an example:
+#
+# @CODE
+#   java-pkg_regjar ${D}/opt/my-java/lib/*.jar
+# @CODE
+#
+
+# TODO should we be making sure the jar is present on ${D} or wherever?
+java-pkg_regjar() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] && die "at least one argument needed"
+
+	java-pkg_init_paths_
+
+	local jar jar_dir jar_file
+	for jar in "${@}"; do
+		# TODO use java-pkg_check-versioned-jar
+		if [[ -e "${jar}" || -e "${D}${jar}" ]]; then
+			[[ -d "${jar}" || -d "${D}${jar}" ]] \
+				&& die "Called ${FUNCNAME} on a	directory $*"
+
+			#check that class version correct when in strict mode
+			is-java-strict && java-pkg_verify-classes "${jar}"
+
+			# nelchael: we should strip ${D} in this case too, here's why:
+			# imagine such call:
+			#    java-pkg_regjar ${D}/opt/java/*.jar
+			# such call will fall into this case (-e ${jar}) and will
+			# record paths with ${D} in package.env
+			java-pkg_append_ JAVA_PKG_CLASSPATH	"${jar#${D}}"
+		else
+			if [[ ${jar} = *\** ]]; then
+				eerror "The argument ${jar} to ${FUNCNAME}"
+				eerror "has * in it. If you want it to glob in"
+				eerror '${D} add ${D} to the argument.'
+			fi
+			debug-print "${jar} or ${D}${jar} not found"
+			die "${jar} does not exist"
+		fi
+	done
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_newjar
+# @USAGE: <path/to/oldname.jar> [<newname.jar>]
+# @DESCRIPTION:
+# Installs a jar with a new name (defaults to $PN.jar)
+#
+# For example, installs a versioned jar without the version
+java-pkg_newjar() {
+	debug-print-function ${FUNCNAME} $*
+
+	local original_jar="${1}"
+	local new_jar="${2:-${PN}.jar}"
+	local new_jar_dest="${T}/${new_jar}"
+
+	[[ -z ${original_jar} ]] && die "Must specify a jar to install"
+	[[ ! -f ${original_jar} ]] \
+		&& die "${original_jar} does not exist or is not a file!"
+
+	rm -f "${new_jar_dest}" || die "Failed to remove ${new_jar_dest}"
+	cp "${original_jar}" "${new_jar_dest}" \
+		|| die "Failed to copy ${original_jar} to ${new_jar_dest}"
+	java-pkg_dojar "${new_jar_dest}"
+}
+
+# @FUNCTION: java-pkg_addcp
+# @USAGE: <classpath>
+# @DESCRIPTION:
+# Add something to the package's classpath. For jars, you should use dojar,
+# newjar, or regjar. This is typically used to add directories to the classpath.
+# The parameters of this function are appended to JAVA_PKG_CLASSPATH
+java-pkg_addcp() {
+	java-pkg_append_ JAVA_PKG_CLASSPATH "${@}"
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_doso
+# @USAGE: <path/to/file1.so> [...]
+# @DESCRIPTION:
+# Installs any number of JNI libraries
+# They will be installed into /usr/lib by default, but java-pkg_sointo
+# can be used change this path
+#
+# @CODE
+# Example:
+#	java-pkg_doso *.so
+# @CODE
+java-pkg_doso() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] && die "${FUNCNAME} requires at least one argument"
+
+	java-pkg_init_paths_
+
+	local lib
+	# for each lib
+	for lib in "$@" ; do
+		# if the lib exists...
+		if [[ -e "${lib}" ]] ; then
+			# install if it isn't a symlink
+			if [[ ! -L "${lib}" ]] ; then
+				(
+					insinto "${JAVA_PKG_LIBDEST}"
+					insopts -m0755
+					doins "${lib}"
+				) || die "failed to install ${lib}"
+				java-pkg_append_ JAVA_PKG_LIBRARY "${JAVA_PKG_LIBDEST}"
+				debug-print "Installing ${lib} to ${JAVA_PKG_LIBDEST}"
+			# otherwise make a symlink to the symlink's origin
+			else
+				dosym "$(readlink "${lib}")" "${JAVA_PKG_LIBDEST}/${lib##*/}"
+				debug-print "${lib} is a symlink, linking accordantly"
+			fi
+		# otherwise die
+		else
+			die "${lib} does not exist"
+		fi
+	done
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_regso
+# @USAGE: <file1.so> [...]
+# @DESCRIPTION:
+# Registers an already installed JNI library in package.env.
+#
+# @CODE
+# Parameters:
+# $@ - JNI libraries to register
+#
+# Example:
+#	java-pkg_regso *.so /path/*.so
+# @CODE
+java-pkg_regso() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] && die "${FUNCNAME} requires at least one argument"
+
+	java-pkg_init_paths_
+
+	local lib target_dir
+	for lib in "$@" ; do
+		# Check the absolute path of the lib
+		if [[ -e "${lib}" ]] ; then
+			target_dir="$(java-pkg_expand_dir_ ${lib})"
+			java-pkg_append_ JAVA_PKG_LIBRARY "/${target_dir#${D}}"
+		# Check the path of the lib relative to ${D}
+		elif [[ -e "${D}${lib}" ]]; then
+			target_dir="$(java-pkg_expand_dir_ ${D}${lib})"
+			java-pkg_append_ JAVA_PKG_LIBRARY "${target_dir}"
+		else
+			die "${lib} does not exist"
+		fi
+	done
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_jarinto
+# @USAGE: </path/to/install/jars/into>
+# @DESCRIPTION:
+# Changes the path jars are installed into via subsequent java-pkg_dojar calls.
+java-pkg_jarinto() {
+	debug-print-function ${FUNCNAME} $*
+
+	JAVA_PKG_JARDEST="${1}"
+}
+
+# @FUNCTION: java-pkg_sointo
+# @USAGE: </path/to/install/sofiles/into>
+# @DESCRIPTION:
+# Changes the path that JNI libraries are installed into via subsequent
+# java-pkg_doso calls.
+java-pkg_sointo() {
+	debug-print-function ${FUNCNAME} $*
+
+	JAVA_PKG_LIBDEST="${1}"
+}
+
+# @FUNCTION: java-pkg_dohtml
+# @USAGE: <path/to/javadoc/documentation> [...]
+# @DESCRIPTION:
+# Install Javadoc HTML documentation. Usage of java-pkg_dojavadoc is preferred.
+#
+# @CODE
+#	java-pkg_dohtml dist/docs/
+# @CODE
+java-pkg_dohtml() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 1 ]] &&  die "At least one argument required for ${FUNCNAME}"
+
+	# from /usr/lib/portage/bin/dohtml -h
+	#  -f   Set list of allowed extensionless file names.
+	dohtml -f package-list "$@"
+
+	# this probably shouldn't be here but it provides
+	# a reasonable way to catch # docs for all of the
+	# old ebuilds.
+	java-pkg_recordjavadoc
+}
+
+# @FUNCTION: java-pkg_dojavadoc
+# @USAGE: [--symlink destination] <path/to/javadocs/root>
+# @DESCRIPTION:
+# Installs javadoc documentation. This should be controlled by the doc use flag.
+#
+# @CODE
+# Parameters:
+# $1: optional --symlink creates to symlink like this for html
+#            documentation bundles.
+# $2: - The javadoc root directory.
+#
+# Examples:
+#	java-pkg_dojavadoc docs/api
+#	java-pkg_dojavadoc --symlink apidocs docs/api
+# @CODE
+java-pkg_dojavadoc() {
+	debug-print-function ${FUNCNAME} $*
+
+	# For html documentation bundles that link to Javadoc
+	local symlink
+	if [[ ${1} = --symlink ]]; then
+		symlink=${2}
+		shift 2
+	fi
+
+	local dir="$1"
+	local dest=/usr/share/doc/${PF}/html
+
+	# QA checks
+
+	java-pkg_check-phase install
+	java-pkg_init_paths_
+
+	[[ -z "${dir}" ]] && die "Must specify a directory!"
+	[[ ! -d "${dir}" ]] && die "${dir} does not exist, or isn't a directory!"
+	if [[ ! -e "${dir}/index.html" ]]; then
+		local msg="No index.html in javadoc directory"
+		ewarn "${msg}"
+		is-java-strict && die "${msg}"
+	fi
+
+	if [[ -e ${D}/${dest}/api ]]; then
+		eerror "${dest} already exists. Will not overwrite."
+		die "${dest}"
+	fi
+
+	# Renaming to match our directory layout
+
+	local dir_to_install="${dir}"
+	if [[ "$(basename "${dir}")" != "api" ]]; then
+		dir_to_install="${T}/api"
+		# TODO use doins
+		cp -r "${dir}" "${dir_to_install}" || die "cp failed"
+	fi
+
+	# Actual installation
+	java-pkg_dohtml -r "${dir_to_install}"
+
+	# Let's make a symlink to the directory we have everything else under
+	dosym ${dest}/api "${JAVA_PKG_SHAREPATH}/api" || die
+
+	if [[ ${symlink} ]]; then
+		debug-print "symlinking ${dest}/{api,${symlink}}"
+		dosym ${dest}/{api,${symlink}} || die
+	fi
+
+	# Extra logging if enabled.
+	if [[ -n ${JAVA_PKG_DEBUG} ]]; then
+		einfo "Verbose logging for \"${FUNCNAME}\" function"
+		einfo "Documentation destination: ${dest}"
+		einfo "Directory to install: ${dir_to_install}"
+		einfo "Complete command:"
+		einfo "${FUNCNAME} ${@}"
+	fi
+}
+
+# @FUNCTION: java-pkg_dosrc
+# @USAGE: <path/to/sources> [...]
+# @DESCRIPTION:
+# Installs a zip containing the source for a package, so it can used in
+# from IDEs like eclipse and netbeans.
+# Ebuild needs to DEPEND on app-arch/zip to use this. It also should be controlled by USE=source.
+#
+# @CODE
+# Example:
+# java-pkg_dosrc src/*
+# @CODE
+
+# TODO change so it the arguments it takes are the base directories containing
+# source -nichoj
+#
+# TODO should we be able to handle multiple calls to dosrc? -nichoj
+#
+# TODO maybe we can take an existing zip/jar? -nichoj
+#
+# FIXME apparently this fails if you give it an empty directories
+java-pkg_dosrc() {
+	debug-print-function ${FUNCNAME} $*
+
+	[ ${#} -lt 1 ] && die "At least one argument needed"
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] && die "At least one argument needed"
+
+	if ! [[ ${DEPEND} = *app-arch/zip* ]]; then
+		local msg="${FUNCNAME} called without app-arch/zip in DEPEND"
+		java-pkg_announce-qa-violation ${msg}
+	fi
+
+	java-pkg_init_paths_
+
+	local zip_name="${PN}-src.zip"
+	local zip_path="${T}/${zip_name}"
+	local dir
+	for dir in "${@}"; do
+		local dir_parent=$(dirname "${dir}")
+		local dir_name=$(basename "${dir}")
+		pushd ${dir_parent} > /dev/null || die "problem entering ${dir_parent}"
+		zip -q -r ${zip_path} ${dir_name} -i '*.java'
+		local result=$?
+		# 12 means zip has nothing to do
+		if [[ ${result} != 12 && ${result} != 0 ]]; then
+			die "failed to zip ${dir_name}"
+		fi
+		popd >/dev/null || die
+	done
+
+	# Install the zip
+	(
+		insinto "${JAVA_PKG_SOURCESPATH}"
+		doins ${zip_path}
+	) || die "Failed to install source"
+
+	JAVA_SOURCES="${JAVA_PKG_SOURCESPATH}/${zip_name}"
+
+	# Extra logging if enabled.
+	if [[ -n ${JAVA_PKG_DEBUG} ]]; then
+		einfo "Verbose logging for \"${FUNCNAME}\" function"
+		einfo "Zip filename created: ${zip_name}"
+		einfo "Zip file destination: ${JAVA_PKG_SOURCESPATH}"
+		einfo "Directories zipped: ${@}"
+		einfo "Complete command:"
+		einfo "${FUNCNAME} ${@}"
+	fi
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_dolauncher
+# @USAGE: <filename> [options]
+# @DESCRIPTION:
+# Make a wrapper script to lauch/start this package
+# If necessary, the wrapper will switch to the appropriate VM.
+#
+# Can be called without parameters if the package installs only one jar
+# that has the Main-class attribute set. The wrapper will be named ${PN}.
+#
+# @CODE
+# Parameters:
+# $1 - filename of launcher to create
+# $2 - options, as follows:
+#  --main the.main.class.to.start
+#  --jar /the/jar/too/launch.jar or just <name>.jar
+#  --java_args 'Extra arguments to pass to java'
+#  --pkg_args 'Extra arguments to pass to the package'
+#  --pwd Directory the launcher changes to before executing java
+#  -into Directory to install the launcher to, instead of /usr/bin
+#  -pre Prepend contents of this file to the launcher
+# @CODE
+java-pkg_dolauncher() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+	java-pkg_init_paths_
+
+	if [[ ${#} = 0 ]]; then
+		local name="${PN}"
+	else
+		local name="${1}"
+		shift
+	fi
+
+	# TODO rename to launcher
+	local target="${T}/${name}"
+	local var_tmp="${T}/launcher_variables_tmp"
+	local target_dir pre
+
+	# Process the other the rest of the arguments
+	while [[ -n "${1}" && -n "${2}" ]]; do
+		local var="${1}" value="${2}"
+		if [[ "${var:0:2}" == "--" ]]; then
+			local var=${var:2}
+			echo "gjl_${var}=\"${value}\"" >> "${var_tmp}"
+			local gjl_${var}="${value}"
+		elif [[ "${var}" == "-into" ]]; then
+			target_dir="${value}"
+		elif [[ "${var}" == "-pre" ]]; then
+			pre="${value}"
+		fi
+		shift 2
+	done
+
+	# Test if no --jar and --main arguments were given and
+	# in that case check if the package only installs one jar
+	# and use that jar.
+	if [[ -z "${gjl_jar}" && -z "${gjl_main}" ]]; then
+		local cp="${JAVA_PKG_CLASSPATH}"
+		if [[ "${cp/:}" = "${cp}" && "${cp%.jar}" != "${cp}" ]]; then
+			echo "gjl_jar=\"${JAVA_PKG_CLASSPATH}\"" >> "${var_tmp}"
+		else
+			local msg="Not enough information to create a launcher given."
+			msg="${msg} Please give --jar or --main argument to ${FUNCNAME}."
+			die "${msg}"
+		fi
+	fi
+
+	# Write the actual script
+	echo "#!/bin/bash" > "${target}"
+	if [[ -n "${pre}" ]]; then
+		if [[ -f "${pre}" ]]; then
+			cat "${pre}" >> "${target}"
+		else
+			die "-pre specified file '${pre}' does not exist"
+		fi
+	fi
+	echo "gjl_package=${JAVA_PKG_NAME}" >> "${target}"
+	cat "${var_tmp}" >> "${target}"
+	rm -f "${var_tmp}"
+	echo "source ${EPREFIX}/usr/share/java-config-2/launcher/launcher.bash" >> "${target}"
+
+	if [[ -n "${target_dir}" ]]; then
+		(
+			into "${target_dir}"
+			dobin "${target}"
+		)
+		local ret=$?
+		return ${ret}
+	else
+		dobin "${target}"
+	fi
+}
+
+# @FUNCTION: java-pkg_dowar
+# @DESCRIPTION:
+# Install war files.
+# TODO document
+java-pkg_dowar() {
+	debug-print-function ${FUNCNAME} $*
+
+	# Check for arguments
+	[[ ${#} -lt 1 ]] && die "At least one argument needed"
+	java-pkg_check-phase install
+
+	java-pkg_init_paths_
+
+	local war
+	for war in $* ; do
+		local warpath
+		# TODO evaluate if we want to handle symlinks differently -nichoj
+		# Check for symlink
+		if [[ -L "${war}" ]] ; then
+			cp "${war}" "${T}"
+			warpath="${T}$(basename "${war}")"
+		# Check for directory
+		# TODO evaluate if we want to handle directories differently -nichoj
+		elif [[ -d "${war}" ]] ; then
+			echo "dowar: warning, skipping directory ${war}"
+			continue
+		else
+			warpath="${war}"
+		fi
+
+		# Install those files like you mean it
+		(
+			insopts -m0644
+			insinto "${JAVA_PKG_WARDEST}"
+			doins ${warpath}
+		)
+	done
+}
+
+# @FUNCTION: java-pkg_recordjavadoc
+# @INTERNAL
+# @DESCRIPTION:
+# Scan for JavaDocs, and record their existence in the package.env file
+
+# TODO make sure this in the proper section
+java-pkg_recordjavadoc()
+{
+	debug-print-function ${FUNCNAME} $*
+	# the find statement is important
+	# as some packages include multiple trees of javadoc
+	JAVADOC_PATH="$(find ${D}/usr/share/doc/ -name allclasses-frame.html -printf '%h:')"
+	# remove $D - TODO: check this is ok with all cases of the above
+	JAVADOC_PATH="${JAVADOC_PATH//${D}}"
+	if [[ -n "${JAVADOC_PATH}" ]] ; then
+		debug-print "javadocs found in ${JAVADOC_PATH%:}"
+		java-pkg_do_write_
+	else
+		debug-print "No javadocs found"
+	fi
+}
+
+
+# @FUNCTION: java-pkg_jar-from
+# @USAGE: [--build-only] [--with-dependencies] [--virtual] [--into dir] <package> [<package.jar>] [<destination.jar>]
+# @DESCRIPTION:
+# Makes a symlink to a jar from a certain package
+# A lot of java packages include dependencies in a lib/ directory
+# You can use this function to replace these bundled dependencies.
+# The dependency is recorded into package.env DEPEND line, unless "--build-only"
+# is passed as the very first argument, for jars that have to be present only
+# at build time and are not needed on runtime (junit testing etc).
+#
+# @CODE
+# Example: get all jars from xerces slot 2
+#	java-pkg_jar-from xerces-2
+#
+# Example: get a specific jar from xerces slot 2
+# 	java-pkg_jar-from xerces-2 xml-apis.jar
+#
+# Example: get a specific jar from xerces slot 2, and name it diffrently
+# 	java-pkg_jar-from xerces-2 xml-apis.jar xml.jar
+#
+# Example: get junit.jar which is needed only for building
+#	java-pkg_jar-from --build-only junit junit.jar
+# @CODE
+#
+# @CODE
+# Parameters
+#	--build-only - makes the jar(s) not added into package.env DEPEND line.
+#	  (assumed automatically when called inside src_test)
+#	--with-dependencies - get jars also from requested package's dependencies
+#	  transitively.
+#	--virtual - Packages passed to this function are to be handled as virtuals
+#	  and will not have individual jar dependencies recorded.
+#	--into $dir - symlink jar(s) into $dir (must exist) instead of .
+# $1 - Package to get jars from, or comma-separated list of packages in
+#	case other parameters are not used.
+# $2 - jar from package. If not specified, all jars will be used.
+# $3 - When a single jar is specified, destination filename of the
+#	symlink. Defaults to the name of the jar.
+# @CODE
+
+# TODO could probably be cleaned up a little
+java-pkg_jar-from() {
+	debug-print-function ${FUNCNAME} $*
+
+	local build_only=""
+	local destdir="."
+	local deep=""
+	local virtual=""
+	local record_jar=""
+
+	[[ "${EBUILD_PHASE}" == "test" ]] && build_only="build"
+
+	while [[ "${1}" == --* ]]; do
+		if [[ "${1}" = "--build-only" ]]; then
+			build_only="build"
+		elif [[ "${1}" = "--with-dependencies" ]]; then
+			deep="--with-dependencies"
+		elif [[ "${1}" = "--virtual" ]]; then
+			virtual="true"
+		elif [[ "${1}" = "--into" ]]; then
+			destdir="${2}"
+			shift
+		else
+			die "java-pkg_jar-from called with unknown parameter: ${1}"
+		fi
+		shift
+	done
+
+	local target_pkg="${1}" target_jar="${2}" destjar="${3}"
+
+	[[ -z ${target_pkg} ]] && die "Must specify a package"
+
+	if [[ "${EAPI}" == "1" ]]; then
+		target_pkg="${target_pkg//:/-}"
+	fi
+
+	# default destjar to the target jar
+	[[ -z "${destjar}" ]] && destjar="${target_jar}"
+
+	local error_msg="There was a problem getting the classpath for ${target_pkg}."
+	local classpath
+	classpath="$(java-config ${deep} --classpath=${target_pkg})"
+	[[ $? != 0 ]] && die ${error_msg}
+
+	# When we have commas this functions is called to bring jars from multiple
+	# packages. This affects recording of dependencencies performed later
+	# which expects one package only, so we do it here.
+	if [[ ${target_pkg} = *,* ]]; then
+		for pkg in ${target_pkg//,/ }; do
+			java-pkg_ensure-dep "${build_only}" "${pkg}"
+			[[ -z "${build_only}" ]] && java-pkg_record-jar_ "${pkg}"
+		done
+		# setting this disables further record-jar_ calls later
+		record_jar="true"
+	else
+		java-pkg_ensure-dep "${build_only}" "${target_pkg}"
+	fi
+
+	# Record the entire virtual as a dependency so that
+	# no jars are missed.
+	if [[ -z "${build_only}" && -n "${virtual}" ]]; then
+		java-pkg_record-jar_ "${target_pkg}"
+		# setting this disables further record-jars_ calls later
+		record_jar="true"
+	fi
+
+	pushd ${destdir} > /dev/null \
+		|| die "failed to change directory to ${destdir}"
+
+	local jar
+	for jar in ${classpath//:/ }; do
+		local jar_name=$(basename "${jar}")
+		if [[ ! -f "${jar}" ]] ; then
+			debug-print "${jar} from ${target_pkg} does not exist"
+			die "Installation problems with jars in ${target_pkg} - is it installed?"
+		fi
+		# If no specific target jar was indicated, link it
+		if [[ -z "${target_jar}" ]] ; then
+			[[ -f "${target_jar}" ]]  && rm "${target_jar}"
+			ln -snf "${jar}" \
+				|| die "Failed to make symlink from ${jar} to ${jar_name}"
+			if [[ -z "${record_jar}" ]]; then
+				if [[ -z "${build_only}" ]]; then
+					java-pkg_record-jar_ "${target_pkg}" "${jar}"
+				else
+					java-pkg_record-jar_ --build-only "${target_pkg}" "${jar}"
+				fi
+			fi
+		# otherwise, if the current jar is the target jar, link it
+		elif [[ "${jar_name}" == "${target_jar}" ]] ; then
+			[[ -f "${destjar}" ]]  && rm "${destjar}"
+			ln -snf "${jar}" "${destjar}" \
+				|| die "Failed to make symlink from ${jar} to ${destjar}"
+			if [[ -z "${record_jar}" ]]; then
+				if [[ -z "${build_only}" ]]; then
+					java-pkg_record-jar_ "${target_pkg}" "${jar}"
+				else
+					java-pkg_record-jar_ --build-only "${target_pkg}" "${jar}"
+				fi
+			fi
+			popd > /dev/null || die
+			return 0
+		fi
+	done
+	popd > /dev/null || die
+	# if no target was specified, we're ok
+	if [[ -z "${target_jar}" ]] ; then
+		return 0
+	# otherwise, die bitterly
+	else
+		die "Failed to find ${target_jar:-jar} in ${target_pkg}"
+	fi
+}
+
+# @FUNCTION: java-pkg_jarfrom
+# @DESCRIPTION:
+# See java-pkg_jar-from
+java-pkg_jarfrom() {
+	java-pkg_jar-from "$@"
+}
+
+# @FUNCTION: java-pkg_getjars
+# @USAGE: [--build-only] [--with-dependencies] <package1>[,<package2>...]
+# @DESCRIPTION:
+# Get the classpath provided by any number of packages
+# Among other things, this can be passed to 'javac -classpath' or 'ant -lib'.
+# The providing packages are recorded as dependencies into package.env DEPEND
+# line, unless "--build-only" is passed as the very first argument, for jars
+# that have to be present only at build time and are not needed on runtime
+# (junit testing etc).
+#
+# @CODE
+# Example: Get the classpath for xerces-2 and xalan,
+#	java-pkg_getjars xerces-2,xalan
+#
+# Example Return:
+#	/usr/share/xerces-2/lib/xml-apis.jar:/usr/share/xerces-2/lib/xmlParserAPIs.jar:/usr/share/xalan/lib/xalan.jar
+#
+#
+# Parameters:
+#	--build-only - makes the jar(s) not added into package.env DEPEND line.
+#	  (assumed automatically when called inside src_test)
+#	--with-dependencies - get jars also from requested package's dependencies
+#	  transitively.
+# $1 - list of packages to get jars from
+#   (passed to java-config --classpath)
+# @CODE
+java-pkg_getjars() {
+	debug-print-function ${FUNCNAME} $*
+
+	local build_only=""
+	local deep=""
+
+	[[ "${EBUILD_PHASE}" == "test" ]] && build_only="build"
+
+	while [[ "${1}" == --* ]]; do
+		if [[ "${1}" = "--build-only" ]]; then
+			build_only="build"
+		elif [[ "${1}" = "--with-dependencies" ]]; then
+			deep="--with-dependencies"
+		else
+			die "java-pkg_jar-from called with unknown parameter: ${1}"
+		fi
+		shift
+	done
+
+	[[ ${#} -ne 1 ]] && die "${FUNCNAME} takes only one argument besides --*"
+
+
+	local pkgs="${1}"
+
+	if [[ "${EAPI}" == "1" ]]; then
+		pkgs="${pkgs//:/-}"
+	fi
+
+	jars="$(java-config ${deep} --classpath=${pkgs})"
+	[[ $? != 0 ]] && die "java-config --classpath=${pkgs} failed"
+	debug-print "${pkgs}:${jars}"
+
+	for pkg in ${pkgs//,/ }; do
+		java-pkg_ensure-dep "${build_only}" "${pkg}"
+	done
+
+	for pkg in ${pkgs//,/ }; do
+		if [[ -z "${build_only}" ]]; then
+			java-pkg_record-jar_ "${pkg}"
+		else
+			java-pkg_record-jar_ --build-only "${pkg}"
+		fi
+	done
+
+	echo "${jars}"
+}
+
+# @FUNCTION: java-pkg_getjar
+# @USAGE: [--build-only] [--virtual] <package> <jarfile>
+# @DESCRIPTION:
+# Get the complete path of a single jar from a package
+# The providing package is recorded as runtime dependency into package.env
+# DEPEND line, unless "--build-only" is passed as the very first argument, for
+# jars that have to be present only at build time and are not needed on runtime
+# (junit testing etc).
+#
+# @CODE
+# Example:
+#	java-pkg_getjar xerces-2 xml-apis.jar
+# returns
+#	/usr/share/xerces-2/lib/xml-apis.jar
+#
+# Parameters:
+#	--build-only - makes the jar not added into package.env DEPEND line.
+#	--virtual - Packages passed to this function are to be handled as virtuals
+#	  and will not have individual jar dependencies recorded.
+# $1 - package to use
+# $2 - jar to get
+# @CODE
+java-pkg_getjar() {
+	debug-print-function ${FUNCNAME} $*
+
+	local build_only=""
+	local virtual=""
+	local record_jar=""
+
+	[[ "${EBUILD_PHASE}" == "test" ]] && build_only="build"
+
+	while [[ "${1}" == --* ]]; do
+		if [[ "${1}" = "--build-only" ]]; then
+			build_only="build"
+		elif [[ "${1}" == "--virtual" ]]; then
+			virtual="true"
+		else
+			die "java-pkg_getjar called with unknown parameter: ${1}"
+		fi
+		shift
+	done
+
+	[[ ${#} -ne 2 ]] && die "${FUNCNAME} takes only two arguments besides --*"
+
+	local pkg="${1}" target_jar="${2}" jar
+
+	if [[ "${EAPI}" == "1" ]]; then
+		pkg="${pkg//:/-}"
+	fi
+
+	[[ -z ${pkg} ]] && die "Must specify package to get a jar from"
+	[[ -z ${target_jar} ]] && die "Must specify jar to get"
+
+	local error_msg="Could not find classpath for ${pkg}. Are you sure its installed?"
+	local classpath
+	classpath=$(java-config --classpath=${pkg})
+	[[ $? != 0 ]] && die ${error_msg}
+
+	java-pkg_ensure-dep "${build_only}" "${pkg}"
+
+	# Record the package(Virtual) as a dependency and then set build_only
+	# So that individual jars are not recorded.
+	if [[ -n "${virtual}" ]]; then
+		if [[ -z "${build_only}" ]]; then
+			java-pkg_record-jar_ "${pkg}"
+		else
+			java-pkg_record-jar_ --build-only "${pkg}"
+		fi
+		record_jar="true"
+	fi
+
+	for jar in ${classpath//:/ }; do
+		if [[ ! -f "${jar}" ]] ; then
+			die "Installation problem with jar ${jar} in ${pkg} - is it installed?"
+		fi
+
+		if [[ "$(basename ${jar})" == "${target_jar}" ]] ; then
+			# Only record jars that aren't build-only
+			if [[ -z "${record_jar}" ]]; then
+				if [[ -z "${build_only}" ]]; then
+					java-pkg_record-jar_ "${pkg}" "${jar}"
+				else
+					java-pkg_record-jar_ --build-only "${pkg}" "${jar}"
+				fi
+			fi
+			echo "${jar}"
+			return 0
+		fi
+	done
+
+	die "Could not find ${target_jar} in ${pkg}"
+	return 1
+}
+
+# @FUNCTION: java-pkg_register-dependency
+# @USAGE: <package>[,<package2>...] [<jarfile>]
+# @DESCRIPTION:
+# Registers runtime dependency on a package, list of packages, or a single jar
+# from a package, into package.env DEPEND line. Can only be called in
+# src_install phase.
+# Intended for binary packages where you don't need to symlink the jars or get
+# their classpath during build. As such, the dependencies only need to be
+# specified in ebuild's RDEPEND, and should be omitted in DEPEND.
+#
+# @CODE
+# Parameters:
+# $1 - comma-separated list of packages, or a single package
+# $2 - if param $1 is a single package, optionally specify the jar
+#   to depend on
+#
+# Examples:
+# Record the dependency on whole xerces-2 and xalan,
+#	java-pkg_register-dependency xerces-2,xalan
+#
+# Record the dependency on ant.jar from ant-core
+#	java-pkg_register-dependency ant-core ant.jar
+# @CODE
+#
+# Note: Passing both list of packages as the first parameter AND specifying the
+# jar as the second is not allowed and will cause the function to die. We assume
+# that there's more chance one passes such combination as a mistake, than that
+# there are more packages providing identically named jar without class
+# collisions.
+java-pkg_register-dependency() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -gt 2 ]] && die "${FUNCNAME} takes at most two arguments"
+
+	local pkgs="${1}"
+	local jar="${2}"
+
+	[[ -z "${pkgs}" ]] && die "${FUNCNAME} called with no package(s) specified"
+
+	if [[ "${EAPI}" == "1" ]]; then
+		pkgs="${pkgs//:/-}"
+	fi
+
+	if [[ -z "${jar}" ]]; then
+		for pkg in ${pkgs//,/ }; do
+			java-pkg_ensure-dep runtime "${pkg}"
+			java-pkg_record-jar_ "${pkg}"
+		done
+	else
+		[[ ${pkgs} == *,* ]] && \
+			die "${FUNCNAME} called with both package list and jar name"
+		java-pkg_ensure-dep runtime "${pkgs}"
+		java-pkg_record-jar_ "${pkgs}" "${jar}"
+	fi
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_register-optional-dependency
+# @USAGE: <package>[,<package2>...] [<jarfile>]
+# @DESCRIPTION:
+# Registers optional runtime dependency on a package, list of packages, or a
+# single jar from a package, into package.env OPTIONAL_DEPEND line. Can only be
+# called in src_install phase.
+# Intended for packages that can use other packages when those are in classpath.
+# Will be put on classpath by launcher if they are installed. Typical case is
+# JDBC implementations for various databases. It's better than having USE flag
+# for each implementation triggering hard dependency.
+#
+# @CODE
+# Parameters:
+# $1 - comma-separated list of packages, or a single package
+# $2 - if param $1 is a single package, optionally specify the jar to depend on
+#
+# Example:
+# Record the optional dependency on some jdbc providers
+#	java-pkg_register-optional-dependency jdbc-jaybird,jtds-1.2,jdbc-mysql
+# @CODE
+#
+# Note: Passing both list of packages as the first parameter AND specifying the
+# jar as the second is not allowed and will cause the function to die. We assume
+# that there's more chance one passes such combination as a mistake, than that
+# there are more packages providing identically named jar without class
+# collisions.
+java-pkg_register-optional-dependency() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -gt 2 ]] && die "${FUNCNAME} takes at most two arguments"
+
+	local pkgs="${1}"
+	local jar="${2}"
+
+	[[ -z "${pkgs}" ]] && die "${FUNCNAME} called with no package(s) specified"
+
+	if [[ "${EAPI}" == "1" ]]; then
+		pkgs="${pkgs//:/-}"
+	fi
+
+	if [[ -z "${jar}" ]]; then
+		for pkg in ${pkgs//,/ }; do
+			java-pkg_record-jar_ --optional "${pkg}"
+		done
+	else
+		[[ ${pkgs} == *,* ]] && \
+			die "${FUNCNAME} called with both package list and jar name"
+		java-pkg_record-jar_ --optional "${pkgs}" "${jar}"
+	fi
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_register-environment-variable
+# @USAGE: <name> <value>
+# @DESCRIPTION:
+# Register an arbitrary environment variable into package.env. The gjl launcher
+# for this package or any package depending on this will export it into
+# environement before executing java command.
+# Must only be called in src_install phase.
+JAVA_PKG_EXTRA_ENV="${T}/java-pkg-extra-env"
+JAVA_PKG_EXTRA_ENV_VARS=""
+java-pkg_register-environment-variable() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} != 2 ]] && die "${FUNCNAME} takes two arguments"
+
+	echo "${1}=\"${2}\"" >> ${JAVA_PKG_EXTRA_ENV}
+	JAVA_PKG_EXTRA_ENV_VARS="${JAVA_PKG_EXTRA_ENV_VARS} ${1}"
+
+	java-pkg_do_write_
+}
+
+# @FUNCTION: java-pkg_get-bootclasspath
+# @USAGE: <version>
+# @DESCRIPTION:
+# Returns classpath of a given bootclasspath-providing package version.
+#
+# @param $1 - the version of bootclasspath (e.g. 1.5), 'auto' for bootclasspath
+#             of the current JDK
+java-pkg_get-bootclasspath() {
+	local version="${1}"
+
+	local bcp
+	case "${version}" in
+		auto)
+			bcp="$(java-config -g BOOTCLASSPATH)"
+			;;
+		1.5)
+			bcp="$(java-pkg_getjars --build-only gnu-classpath-0.98)"
+			;;
+		*)
+			eerror "unknown parameter of java-pkg_get-bootclasspath"
+			die "unknown parameter of java-pkg_get-bootclasspath"
+			;;
+	esac
+
+	echo "${bcp}"
+}
+
+
+# This function reads stdin, and based on that input, figures out how to
+# populate jars from the filesystem.
+# Need to figure out a good way of making use of this, ie be able to use a
+# string that was built instead of stdin
+# NOTE: this isn't quite ready for primetime.
+#java-pkg_populate-jars() {
+#	local line
+#
+#	read line
+#	while [[ -n "${line}" ]]; do
+#		# Ignore comments
+#		[[ ${line%%#*} == "" ]] && continue
+#
+#		# get rid of any spaces
+#		line="${line// /}"
+#
+#		# format: path=jarinfo
+#		local path=${line%%=*}
+#		local jarinfo=${line##*=}
+#
+#		# format: jar@package
+#		local jar=${jarinfo%%@*}.jar
+#		local package=${jarinfo##*@}
+#		if [[ -n ${replace_only} ]]; then
+#			[[ ! -f $path ]] && die "No jar exists at ${path}"
+#		fi
+#		if [[ -n ${create_parent} ]]; then
+#			local parent=$(dirname ${path})
+#			mkdir -p "${parent}"
+#		fi
+#		java-pkg_jar-from "${package}" "${jar}" "${path}"
+#
+#		read line
+#	done
+#}
+
+# @FUNCTION: java-pkg_find-normal-jars
+# @USAGE: [<path/to/directory>]
+# @DESCRIPTION:
+# Find the files with suffix .jar file in the given directory (default: $WORKDIR)
+java-pkg_find-normal-jars() {
+	local dir=$1
+	[[ "${dir}" ]] || dir="${WORKDIR}"
+	local found
+	for jar in $(find "${dir}" -name "*.jar" -type f); do
+		echo "${jar}"
+		found="true"
+	done
+	[[ "${found}" ]]
+	return $?
+}
+
+# @FUNCTION: java-pkg_ensure-no-bundled-jars
+# @DESCRIPTION:
+# Try to locate bundled jar files in ${WORKDIR} and die if found.
+# This function should be called after WORKDIR has been populated with symlink
+# to system jar files or bundled jars removed.
+java-pkg_ensure-no-bundled-jars() {
+	debug-print-function ${FUNCNAME} $*
+
+	local bundled_jars=$(java-pkg_find-normal-jars)
+	if [[ -n ${bundled_jars} ]]; then
+		echo "Bundled jars found:"
+		local jar
+		for jar in ${bundled_jars}; do
+			echo $(pwd)${jar/./}
+		done
+		die "Bundled jars found!"
+	fi
+}
+
+# @FUNCTION: java-pkg_ensure-vm-version-sufficient
+# @INTERNAL
+# @DESCRIPTION:
+# Checks if we have a sufficient VM and dies if we don't.
+java-pkg_ensure-vm-version-sufficient() {
+	debug-print-function ${FUNCNAME} $*
+
+	if ! java-pkg_is-vm-version-sufficient; then
+		debug-print "VM is not suffient"
+		eerror "Current Java VM cannot build this package"
+		einfo "Please use java-config -S to set the correct one"
+		die "Active Java VM cannot build this package"
+	fi
+}
+
+# @FUNCTION: java-pkg_is-vm-version-sufficient
+# @INTERNAL
+# @DESCRIPTION:
+# @RETURN: zero - VM is sufficient; non-zero - VM is not sufficient
+java-pkg_is-vm-version-sufficient() {
+	debug-print-function ${FUNCNAME} $*
+
+	depend-java-query --is-sufficient "${DEPEND}" > /dev/null
+	return $?
+}
+
+# @FUNCTION: java-pkg_ensure-vm-version-eq
+# @INTERNAL
+# @DESCRIPTION:
+# Die if the current VM is not equal to the argument passed.
+#
+# @param $@ - Desired VM version to ensure
+java-pkg_ensure-vm-version-eq() {
+	debug-print-function ${FUNCNAME} $*
+
+	if ! java-pkg_is-vm-version-eq $@ ; then
+		debug-print "VM is not suffient"
+		eerror "This package requires a Java VM version = $@"
+		einfo "Please use java-config -S to set the correct one"
+		die "Active Java VM too old"
+	fi
+}
+
+# @FUNCTION: java-pkg_is-vm-version-eq
+# @USAGE: <version>
+# @INTERNAL
+# @RETURN: zero - VM versions are equal; non-zero - VM version are not equal
+java-pkg_is-vm-version-eq() {
+	debug-print-function ${FUNCNAME} $*
+
+	local needed_version="$@"
+
+	[[ -z "${needed_version}" ]] && die "need an argument"
+
+	local vm_version="$(java-pkg_get-vm-version)"
+
+	vm_version="$(get_version_component_range 1-2 "${vm_version}")"
+	needed_version="$(get_version_component_range 1-2 "${needed_version}")"
+
+	if [[ -z "${vm_version}" ]]; then
+		debug-print "Could not get JDK version from DEPEND"
+		return 1
+	else
+		if [[ "${vm_version}" == "${needed_version}" ]]; then
+			debug-print "Detected a JDK(${vm_version}) = ${needed_version}"
+			return 0
+		else
+			debug-print "Detected a JDK(${vm_version}) != ${needed_version}"
+			return 1
+		fi
+	fi
+}
+
+# @FUNCTION: java-pkg_ensure-vm-version-ge
+# @INTERNAL
+# @DESCRIPTION:
+# Die if the current VM is not greater than the desired version
+#
+# @param $@ - VM version to compare current to
+java-pkg_ensure-vm-version-ge() {
+	debug-print-function ${FUNCNAME} $*
+
+	if ! java-pkg_is-vm-version-ge "$@" ; then
+		debug-print "vm is not suffient"
+		eerror "This package requires a Java VM version >= $@"
+		einfo "Please use java-config -S to set the correct one"
+		die "Active Java VM too old"
+	fi
+}
+
+# @FUNCTION: java-pkg_is-vm-version-ge
+# @INTERNAL
+# @DESCRIPTION:
+# @CODE
+# Parameters:
+# $@ - VM version to compare current VM to
+# @CODE
+# @RETURN: zero - current VM version is greater than checked version;
+# 	non-zero - current VM version is not greater than checked version
+java-pkg_is-vm-version-ge() {
+	debug-print-function ${FUNCNAME} $*
+
+	local needed_version=$@
+	local vm_version=$(java-pkg_get-vm-version)
+	if [[ -z "${vm_version}" ]]; then
+		debug-print "Could not get JDK version from DEPEND"
+		return 1
+	else
+		if version_is_at_least "${needed_version}" "${vm_version}"; then
+			debug-print "Detected a JDK(${vm_version}) >= ${needed_version}"
+			return 0
+		else
+			debug-print "Detected a JDK(${vm_version}) < ${needed_version}"
+			return 1
+		fi
+	fi
+}
+
+java-pkg_set-current-vm() {
+	export GENTOO_VM=${1}
+}
+
+java-pkg_get-current-vm() {
+	echo ${GENTOO_VM}
+}
+
+java-pkg_current-vm-matches() {
+	has $(java-pkg_get-current-vm) ${@}
+	return $?
+}
+
+# @FUNCTION: java-pkg_get-source
+# @DESCRIPTION:
+# Determines what source version should be used, for passing to -source.
+# Unless you want to break things you probably shouldn't set _WANT_SOURCE
+#
+# @RETURN: string - Either the lowest possible source, or JAVA_PKG_WANT_SOURCE
+java-pkg_get-source() {
+	echo ${JAVA_PKG_WANT_SOURCE:-$(depend-java-query --get-lowest "${DEPEND} ${RDEPEND}")}
+}
+
+# @FUNCTION: java-pkg_get-target
+# @DESCRIPTION:
+# Determines what target version should be used, for passing to -target.
+# If you don't care about lower versions, you can set _WANT_TARGET to the
+# version of your JDK.
+#
+# @RETURN: string - Either the lowest possible target, or JAVA_PKG_WANT_TARGET
+java-pkg_get-target() {
+	echo ${JAVA_PKG_WANT_TARGET:-$(depend-java-query --get-lowest "${DEPEND} ${RDEPEND}")}
+}
+
+# @FUNCTION: java-pkg_get-javac
+# @DESCRIPTION:
+# Returns the compiler executable
+java-pkg_get-javac() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_init-compiler_
+	local compiler="${GENTOO_COMPILER}"
+
+	local compiler_executable
+	if [[ "${compiler}" = "javac" ]]; then
+		# nothing fancy needs to be done for javac
+		compiler_executable="javac"
+	else
+		# for everything else, try to determine from an env file
+
+		local compiler_env="/usr/share/java-config-2/compiler/${compiler}"
+		if [[ -f ${compiler_env} ]]; then
+			local old_javac=${JAVAC}
+			unset JAVAC
+			# try to get value of JAVAC
+			compiler_executable="$(source ${compiler_env} 1>/dev/null 2>&1; echo ${JAVAC})"
+			export JAVAC=${old_javac}
+
+			if [[ -z ${compiler_executable} ]]; then
+				die "JAVAC is empty or undefined in ${compiler_env}"
+			fi
+
+			# check that it's executable
+			if [[ ! -x ${compiler_executable} ]]; then
+				die "${compiler_executable} doesn't exist, or isn't executable"
+			fi
+		else
+			die "Could not find environment file for ${compiler}"
+		fi
+	fi
+	echo ${compiler_executable}
+}
+
+# @FUNCTION: java-pkg_javac-args
+# @DESCRIPTION:
+# If an ebuild uses javac directly, instead of using ejavac, it should call this
+# to know what -source/-target to use.
+#
+# @RETURN: string - arguments to pass to javac, complete with -target and -source
+java-pkg_javac-args() {
+	debug-print-function ${FUNCNAME} $*
+
+	local want_source="$(java-pkg_get-source)"
+	local want_target="$(java-pkg_get-target)"
+
+	local source_str="-source ${want_source}"
+	local target_str="-target ${want_target}"
+
+	debug-print "want source: ${want_source}"
+	debug-print "want target: ${want_target}"
+
+	if [[ -z "${want_source}" || -z "${want_target}" ]]; then
+		die "Could not find valid -source/-target values for javac"
+	else
+		echo "${source_str} ${target_str}"
+	fi
+}
+
+# @FUNCTION: java-pkg_get-jni-cflags
+# @DESCRIPTION:
+# Echos the CFLAGS for JNI compilations
+java-pkg_get-jni-cflags() {
+	local flags="-I${JAVA_HOME}/include"
+
+	local platform="linux"
+	use elibc_FreeBSD && platform="freebsd"
+
+	# TODO do a check that the directories are valid
+	flags="${flags} -I${JAVA_HOME}/include/${platform}"
+
+	echo ${flags}
+}
+
+java-pkg_ensure-gcj() {
+	# was enforcing sys-devel/gcc[gcj]
+	die "${FUNCNAME} was removed. Use use-deps available as of EAPI 2 instead. #261562"
+}
+
+java-pkg_ensure-test() {
+	# was enforcing USE=test if FEATURES=test
+	die "${FUNCNAME} was removed. Package mangers handle this already. #278965"
+}
+
+# @FUNCTION: java-pkg_register-ant-task
+# @USAGE: [--version x.y] [<name>]
+# @DESCRIPTION:
+# Register this package as ant task, so that ant will load it when no specific
+# ANT_TASKS are specified. Note that even without this registering, all packages
+# specified in ANT_TASKS will be loaded. Mostly used by the actual ant tasks
+# packages, but can be also used by other ebuilds that used to symlink their
+# .jar into /usr/share/ant-core/lib to get autoloaded, for backwards
+# compatibility.
+#
+# @CODE
+# Parameters
+# --version x.y Register only for ant version x.y (otherwise for any ant
+#		version). Used by the ant-* packages to prevent loading of mismatched
+#		ant-core ant tasks after core was updated, before the tasks are updated,
+#		without a need for blockers.
+# $1 Name to register as. Defaults to JAVA_PKG_NAME ($PN[-$SLOT])
+# @CODE
+java-pkg_register-ant-task() {
+	local TASKS_DIR="tasks"
+
+	# check for --version x.y parameters
+	while [[ -n "${1}" && -n "${2}" ]]; do
+		local var="${1#--}"
+		local val="${2}"
+		if [[ "${var}" == "version" ]]; then
+			TASKS_DIR="tasks-${val}"
+		else
+			die "Unknown parameter passed to java-pkg_register-ant-tasks: ${1} ${2}"
+		fi
+		shift 2
+	done
+
+	local TASK_NAME="${1:-${JAVA_PKG_NAME}}"
+
+	dodir /usr/share/ant/${TASKS_DIR}
+	touch "${ED}/usr/share/ant/${TASKS_DIR}/${TASK_NAME}"
+}
+
+# @FUNCTION: java-pkg_ant-tasks-depend
+# @INTERNAL
+# @DESCRIPTION:
+# Translates the WANT_ANT_TASKS variable into valid dependencies.
+java-pkg_ant-tasks-depend() {
+	debug-print-function ${FUNCNAME} ${WANT_ANT_TASKS}
+
+	if [[ -n "${WANT_ANT_TASKS}" ]]; then
+		local DEP=""
+		for i in ${WANT_ANT_TASKS}
+		do
+			if [[ ${i} = ant-* ]]; then
+				DEP="${DEP}dev-java/${i} "
+			elif [[ ${i} = */*:* ]]; then
+				DEP="${DEP}${i} "
+			else
+				echo "Invalid atom in WANT_ANT_TASKS: ${i}"
+				return 1
+			fi
+		done
+		echo ${DEP}
+		return 0
+	else
+		return 0
+	fi
+}
+
+
+# @FUNCTION: ejunit_
+# @INTERNAL
+# @DESCRIPTION:
+# Internal Junit wrapper function. Makes it easier to run the tests and checks for
+# dev-java/junit in DEPEND. Launches the tests using junit.textui.TestRunner.
+# @CODE
+# Parameters:
+# $1 - junit package (junit or junit-4)
+# $2 - -cp or -classpath
+# $3 - classpath; junit and recorded dependencies get appended
+# $@ - the rest of the parameters are passed to java
+# @CODE
+ejunit_() {
+	debug-print-function ${FUNCNAME} $*
+
+	local pkgs
+	if [[ -f ${JAVA_PKG_DEPEND_FILE} ]]; then
+		for atom in $(cat ${JAVA_PKG_DEPEND_FILE} | tr : ' '); do
+			pkgs=${pkgs},$(echo ${atom} | sed -re "s/^.*@//")
+		done
+	fi
+
+	local junit=${1}
+	shift 1
+
+	local cp=$(java-pkg_getjars --with-dependencies ${junit}${pkgs})
+	if [[ ${1} = -cp || ${1} = -classpath ]]; then
+		cp="${2}:${cp}"
+		shift 2
+	else
+		cp=".:${cp}"
+	fi
+
+	local runner=junit.textui.TestRunner
+	if [[ "${junit}" == "junit-4" ]] ; then
+		runner=org.junit.runner.JUnitCore
+	fi
+	debug-print "Calling: java -cp \"${cp}\" -Djava.io.tmpdir=\"${T}\" -Djava.awt.headless=true ${runner} ${@}"
+	java -cp "${cp}" -Djava.io.tmpdir="${T}/" -Djava.awt.headless=true ${runner} "${@}" || die "Running junit failed"
+}
+
+# @FUNCTION: ejunit
+# @DESCRIPTION:
+# Junit wrapper function. Makes it easier to run the tests and checks for
+# dev-java/junit in DEPEND. Launches the tests using org.junit.runner.JUnitCore.
+#
+# @CODE
+# Parameters:
+# $1 - -cp or -classpath
+# $2 - classpath; junit and recorded dependencies get appended
+# $@ - the rest of the parameters are passed to java
+#
+# Examples:
+# ejunit -cp build/classes org.blinkenlights.jid3.test.AllTests
+# ejunit org.blinkenlights.jid3.test.AllTests
+# ejunit org.blinkenlights.jid3.test.FirstTest org.blinkenlights.jid3.test.SecondTest
+# @CODE
+ejunit() {
+	debug-print-function ${FUNCNAME} $*
+
+	ejunit_ "junit" "${@}"
+}
+
+# @FUNCTION: ejunit4
+# @DESCRIPTION:
+# Junit4 wrapper function. Makes it easier to run the tests and checks for
+# dev-java/junit:4 in DEPEND. Launches the tests using junit.textui.TestRunner.
+#
+# @CODE
+# Parameters:
+# $1 - -cp or -classpath
+# $2 - classpath; junit and recorded dependencies get appended
+# $@ - the rest of the parameters are passed to java
+#
+# Examples:
+# ejunit4 -cp build/classes org.blinkenlights.jid3.test.AllTests
+# ejunit4 org.blinkenlights.jid3.test.AllTests
+# ejunit4 org.blinkenlights.jid3.test.FirstTest \
+#         org.blinkenlights.jid3.test.SecondTest
+# @CODE
+ejunit4() {
+	debug-print-function ${FUNCNAME} $*
+
+	ejunit_ "junit-4" "${@}"
+}
+
+# @FUNCTION: java-utils-2_src_prepare
+# @DESCRIPTION:
+# src_prepare Searches for bundled jars
+# Don't call directly, but via java-pkg-2_src_prepare!
+java-utils-2_src_prepare() {
+	java-pkg_func-exists java_prepare && java_prepare
+
+	# Check for files in JAVA_RM_FILES array.
+	if [[ ${JAVA_RM_FILES[@]} ]]; then
+		debug-print "$FUNCNAME: removing unneeded files"
+		java-pkg_rm_files "${JAVA_RM_FILES[@]}"
+	fi
+
+	if is-java-strict; then
+		echo "Searching for bundled jars:"
+		java-pkg_find-normal-jars || echo "None found."
+		echo "Searching for bundled classes (no output if none found):"
+		find "${WORKDIR}" -name "*.class"
+		echo "Search done."
+	fi
+}
+
+# @FUNCTION: java-utils-2_pkg_preinst
+# @DESCRIPTION:
+# pkg_preinst Searches for missing and unneeded dependencies
+# Don't call directly, but via java-pkg-2_pkg_preinst!
+java-utils-2_pkg_preinst() {
+	if is-java-strict; then
+		if [[ ! -e "${JAVA_PKG_ENV}" ]] || has ant-tasks ${INHERITED}; then
+			return
+		fi
+
+		if has_version dev-java/java-dep-check; then
+			local output=$(GENTOO_VM= java-dep-check --image "${D}" "${JAVA_PKG_ENV}")
+			[[ ${output} ]] && ewarn "${output}"
+		else
+			eerror "Install dev-java/java-dep-check for dependency checking"
+		fi
+	fi
+}
+
+# @FUNCTION: eant
+# @USAGE: <ant_build_target(s)>
+# @DESCRIPTION:
+# Ant wrapper function. Will use the appropriate compiler, based on user-defined
+# compiler. Will also set proper ANT_TASKS from the variable ANT_TASKS,
+# variables:
+#
+# @CODE
+# Variables:
+# EANT_GENTOO_CLASSPATH - calls java-pkg_getjars for the value and adds to the
+# 		gentoo.classpath property. Be sure to call java-ant_rewrite-classpath in src_unpack.
+# EANT_NEEDS_TOOLS - add tools.jar to the gentoo.classpath. Should only be used
+# 		for build-time purposes, the dependency is not recorded to
+# 		package.env!
+# ANT_TASKS - used to determine ANT_TASKS before calling Ant.
+# @CODE
+eant() {
+	debug-print-function ${FUNCNAME} $*
+
+	if [[ ${EBUILD_PHASE} = compile ]]; then
+		java-ant-2_src_configure
+	fi
+
+	if ! has java-ant-2 ${INHERITED}; then
+		local msg="You should inherit java-ant-2 when using eant"
+		java-pkg_announce-qa-violation "${msg}"
+	fi
+
+	local antflags="-Dnoget=true -Dmaven.mode.offline=true -Dbuild.sysclasspath=ignore"
+
+	java-pkg_init-compiler_
+	local compiler="${GENTOO_COMPILER}"
+
+	local compiler_env="${JAVA_PKG_COMPILER_DIR}/${compiler}"
+	local build_compiler="$(source ${compiler_env} 1>/dev/null 2>&1; echo ${ANT_BUILD_COMPILER})"
+	if [[ "${compiler}" != "javac" && -z "${build_compiler}" ]]; then
+		die "ANT_BUILD_COMPILER undefined in ${compiler_env}"
+	fi
+
+	if [[ ${compiler} != "javac" ]]; then
+		antflags="${antflags} -Dbuild.compiler=${build_compiler}"
+		# Figure out any extra stuff to put on the classpath for compilers aside
+		# from javac
+		# ANT_BUILD_COMPILER_DEPS should be something that could be passed to
+		# java-config -p
+		local build_compiler_deps="$(source ${JAVA_PKG_COMPILER_DIR}/${compiler} 1>/dev/null 2>&1; echo ${ANT_BUILD_COMPILER_DEPS})"
+		if [[ -n ${build_compiler_deps} ]]; then
+			antflags="${antflags} -lib $(java-config -p ${build_compiler_deps})"
+		fi
+	fi
+
+	for arg in "${@}"; do
+		if [[ ${arg} = -lib ]]; then
+			if is-java-strict; then
+				eerror "You should not use the -lib argument to eant because it will fail"
+				eerror "with JAVA_PKG_STRICT. Please use for example java-pkg_jar-from"
+				eerror "or ant properties to make dependencies available."
+				eerror "For ant tasks use WANT_ANT_TASKS or ANT_TASKS from."
+				eerror "split ant (>=dev-java/ant-core-1.7)."
+				die "eant -lib is deprecated/forbidden"
+			else
+				echo "eant -lib is deprecated. Turn JAVA_PKG_STRICT on for"
+				echo "more info."
+			fi
+		fi
+	done
+
+	# parse WANT_ANT_TASKS for atoms
+	local want_ant_tasks
+	for i in ${WANT_ANT_TASKS}; do
+		if [[ ${i} = */*:* ]]; then
+			i=${i#*/}
+			i=${i%:0}
+			want_ant_tasks+="${i/:/-} "
+		else
+			want_ant_tasks+="${i} "
+		fi
+	done
+	# default ANT_TASKS to WANT_ANT_TASKS, if ANT_TASKS is not set explicitly
+	ANT_TASKS="${ANT_TASKS:-${want_ant_tasks% }}"
+
+	# override ANT_TASKS with JAVA_PKG_FORCE_ANT_TASKS if it's set
+	ANT_TASKS="${JAVA_PKG_FORCE_ANT_TASKS:-${ANT_TASKS}}"
+
+	# if ant-tasks is not set by ebuild or forced, use none
+	ANT_TASKS="${ANT_TASKS:-none}"
+
+	# at this point, ANT_TASKS should be "all", "none" or explicit list
+	if [[ "${ANT_TASKS}" == "all" ]]; then
+		einfo "Using all available ANT_TASKS"
+	elif [[ "${ANT_TASKS}" == "none" ]]; then
+		einfo "Disabling all optional ANT_TASKS"
+	else
+		einfo "Using following ANT_TASKS: ${ANT_TASKS}"
+	fi
+
+	export ANT_TASKS
+
+	[[ -n ${JAVA_PKG_DEBUG} ]] && antflags="${antflags} --execdebug -debug"
+	[[ -n ${PORTAGE_QUIET} ]] && antflags="${antflags} -q"
+
+	local gcp="${EANT_GENTOO_CLASSPATH}"
+	local getjarsarg=""
+
+	if [[ ${EBUILD_PHASE} = "test" ]]; then
+		antflags="${antflags} -DJunit.present=true"
+		getjarsarg="--with-dependencies"
+
+		local re="\bant-junit4?([-:]\S+)?\b"
+		[[ ${ANT_TASKS} =~ ${re} ]] && gcp+=" ${BASH_REMATCH[0]}"
+	else
+		antflags="${antflags} -Dmaven.test.skip=true"
+	fi
+
+	local cp
+
+	for atom in ${gcp}; do
+		cp+=":$(java-pkg_getjars ${getjarsarg} ${atom})"
+	done
+
+	[[ ${EANT_NEEDS_TOOLS} ]] && cp+=":$(java-config --tools)"
+	[[ ${EANT_GENTOO_CLASSPATH_EXTRA} ]] && cp+=":${EANT_GENTOO_CLASSPATH_EXTRA}"
+
+	if [[ ${cp#:} ]]; then
+		# It seems ant does not like single quotes around ${cp}
+		antflags="${antflags} -Dgentoo.classpath=\"${cp#:}\""
+	fi
+
+	[[ -n ${JAVA_PKG_DEBUG} ]] && echo ant ${antflags} "${@}"
+	debug-print "Calling ant (GENTOO_VM: ${GENTOO_VM}): ${antflags} ${@}"
+	ant ${antflags} "${@}" || die "eant failed"
+}
+
+# @FUNCTION: ejavac
+# @USAGE: <javac_arguments>
+# @DESCRIPTION:
+# Javac wrapper function. Will use the appropriate compiler, based on
+# /etc/java-config/compilers.conf
+ejavac() {
+	debug-print-function ${FUNCNAME} $*
+
+	local compiler_executable
+	compiler_executable=$(java-pkg_get-javac)
+
+	local javac_args
+	javac_args="$(java-pkg_javac-args)"
+
+	if [[ -n ${JAVA_PKG_DEBUG} ]]; then
+		einfo "Verbose logging for \"${FUNCNAME}\" function"
+		einfo "Compiler executable: ${compiler_executable}"
+		einfo "Extra arguments: ${javac_args}"
+		einfo "Complete command:"
+		einfo "${compiler_executable} ${javac_args} ${@}"
+	fi
+
+	ebegin "Compiling"
+	${compiler_executable} ${javac_args} "${@}" || die "ejavac failed"
+}
+
+# @FUNCTION: ejavadoc
+# @USAGE: <javadoc_arguments>
+# @DESCRIPTION:
+# javadoc wrapper function. Will set some flags based on the VM version
+# due to strict javadoc rules in 1.8.
+ejavadoc() {
+	debug-print-function ${FUNCNAME} $*
+
+	local javadoc_args=""
+
+	if java-pkg_is-vm-version-ge "1.8" ; then
+		javadoc_args="-Xdoclint:none"
+	fi
+
+	if [[ -n ${JAVA_PKG_DEBUG} ]]; then
+		einfo "Verbose logging for \"${FUNCNAME}\" function"
+		einfo "Javadoc executable: javadoc"
+		einfo "Extra arguments: ${javadoc_args}"
+		einfo "Complete command:"
+		einfo "javadoc ${javadoc_args} ${@}"
+	fi
+
+	ebegin "Generating JavaDoc"
+	javadoc ${javadoc_args} "${@}" || die "ejavadoc failed"
+}
+
+# @FUNCTION: java-pkg_filter-compiler
+# @USAGE: <compiler(s)_to_filter>
+# @DESCRIPTION:
+# Used to prevent the use of some compilers. Should be used in src_compile.
+# Basically, it just appends onto JAVA_PKG_FILTER_COMPILER
+java-pkg_filter-compiler() {
+	JAVA_PKG_FILTER_COMPILER="${JAVA_PKG_FILTER_COMPILER} $@"
+}
+
+# @FUNCTION: java-pkg_force-compiler
+# @USAGE: <compiler(s)_to_force>
+# @DESCRIPTION:
+# Used to force the use of particular compilers. Should be used in src_compile.
+# A common use of this would be to force ecj-3.1 to be used on amd64, to avoid
+# OutOfMemoryErrors that may come up.
+java-pkg_force-compiler() {
+	JAVA_PKG_FORCE_COMPILER="$@"
+}
+
+# @FUNCTION: use_doc
+# @DESCRIPTION:
+#
+# Helper function for getting ant to build javadocs. If the user has USE=doc,
+# then 'javadoc' or the argument are returned. Otherwise, there is no return.
+#
+# The output of this should be passed to ant.
+# @CODE
+# Parameters:
+# $@ - Option value to return. Defaults to 'javadoc'
+#
+# Examples:
+# build javadocs by calling 'javadoc' target
+#	eant $(use_doc)
+#
+# build javadocs by calling 'apidoc' target
+#	eant $(use_doc apidoc)
+# @CODE
+# @RETURN string - Name of the target to create javadocs
+use_doc() {
+	use doc && echo ${@:-javadoc}
+}
+
+
+# @FUNCTION: java-pkg_init
+# @INTERNAL
+# @DESCRIPTION:
+# The purpose of this function, as the name might imply, is to initialize the
+# Java environment. It ensures that that there aren't any environment variables
+# that'll muss things up. It initializes some variables, which are used
+# internally. And most importantly, it'll switch the VM if necessary.
+#
+# This shouldn't be used directly. Instead, java-pkg and java-pkg-opt will
+# call it during each of the phases of the merge process.
+java-pkg_init() {
+	debug-print-function ${FUNCNAME} $*
+
+	# Don't set up build environment if installing from binary. #206024 #258423
+	[[ "${MERGE_TYPE}" == "binary" ]] && return
+	# Also try Portage's nonstandard EMERGE_FROM for old EAPIs, if it doesn't
+	# work nothing is lost.
+	has ${EAPI:-0} 0 1 2 3 && [[ "${EMERGE_FROM}" == "binary" ]] && return
+
+	unset JAVAC
+	unset JAVA_HOME
+
+	java-config --help >/dev/null || {
+		eerror ""
+		eerror "Can't run java-config --help"
+		eerror "Have you upgraded python recently but haven't"
+		eerror "run python-updater yet?"
+		die "Can't run java-config --help"
+	}
+
+	# People do all kinds of weird things.
+	# https://forums.gentoo.org/viewtopic-p-3943166.html
+	local silence="${SILENCE_JAVA_OPTIONS_WARNING}"
+	local accept="${I_WANT_GLOBAL_JAVA_OPTIONS}"
+	if [[ -n ${_JAVA_OPTIONS} && -z ${accept} && -z ${silence} ]]; then
+		ewarn "_JAVA_OPTIONS changes what java -version outputs at least for"
+		ewarn "sun-jdk vms and and as such break configure scripts that"
+		ewarn "use it (for example app-office/openoffice) so we filter it out."
+		ewarn "Use SILENCE_JAVA_OPTIONS_WARNING=true in the environment (use"
+		ewarn "make.conf for example) to silence this warning or"
+		ewarn "I_WANT_GLOBAL_JAVA_OPTIONS to not filter it."
+	fi
+
+	if [[ -z ${accept} ]]; then
+		# export _JAVA_OPTIONS= doesn't work because it will show up in java
+		# -version output
+		unset _JAVA_OPTIONS
+		# phase hooks make this run many times without this
+		I_WANT_GLOBAL_JAVA_OPTIONS="true"
+	fi
+
+	if java-pkg_func-exists ant_src_unpack; then
+		java-pkg_announce-qa-violation "Using old ant_src_unpack. Should be src_unpack"
+	fi
+
+	java-pkg_switch-vm
+	PATH=${JAVA_HOME}/bin:${PATH}
+
+	# TODO we will probably want to set JAVAC and JAVACFLAGS
+
+	# Do some QA checks
+	java-pkg_check-jikes
+
+	# Can't use unset here because Portage does not save the unset
+	# see https://bugs.gentoo.org/show_bug.cgi?id=189417#c11
+
+	# When users have crazy classpaths some packages can fail to compile.
+	# and everything should work with empty CLASSPATH.
+	# This also helps prevent unexpected dependencies on random things
+	# from the CLASSPATH.
+	export CLASSPATH=
+
+	# Unset external ANT_ stuff
+	export ANT_TASKS=
+	export ANT_OPTS=
+	export ANT_RESPECT_JAVA_HOME=
+}
+
+# @FUNCTION: java-pkg-init-compiler_
+# @INTERNAL
+# @DESCRIPTION:
+# This function attempts to figure out what compiler should be used. It does
+# this by reading the file at JAVA_PKG_COMPILERS_CONF, and checking the
+# COMPILERS variable defined there.
+# This can be overridden by a list in JAVA_PKG_FORCE_COMPILER
+#
+# It will go through the list of compilers, and verify that it supports the
+# target and source that are needed. If it is not suitable, then the next
+# compiler is checked. When JAVA_PKG_FORCE_COMPILER is defined, this checking
+# isn't done.
+#
+# Once the which compiler to use has been figured out, it is set to
+# GENTOO_COMPILER.
+#
+# If you hadn't guessed, JAVA_PKG_FORCE_COMPILER is for testing only.
+#
+# If the user doesn't defined anything in JAVA_PKG_COMPILERS_CONF, or no
+# suitable compiler was found there, then the default is to use javac provided
+# by the current VM.
+#
+#
+# @RETURN name of the compiler to use
+java-pkg_init-compiler_() {
+	debug-print-function ${FUNCNAME} $*
+
+	if [[ -n ${GENTOO_COMPILER} ]]; then
+		debug-print "GENTOO_COMPILER already set"
+		return
+	fi
+
+	local compilers;
+	if [[ -z ${JAVA_PKG_FORCE_COMPILER} ]]; then
+		compilers="$(source ${JAVA_PKG_COMPILERS_CONF} 1>/dev/null 2>&1; echo	${COMPILERS})"
+	else
+		compilers=${JAVA_PKG_FORCE_COMPILER}
+	fi
+
+	debug-print "Read \"${compilers}\" from ${JAVA_PKG_COMPILERS_CONF}"
+
+	# Figure out if we should announce what compiler we're using
+	local compiler
+	for compiler in ${compilers}; do
+		debug-print "Checking ${compiler}..."
+		# javac should always be alright
+		if [[ ${compiler} = "javac" ]]; then
+			debug-print "Found javac... breaking"
+			export GENTOO_COMPILER="javac"
+			break
+		fi
+
+		if has ${compiler} ${JAVA_PKG_FILTER_COMPILER}; then
+			if [[ -z ${JAVA_PKG_FORCE_COMPILER} ]]; then
+				einfo "Filtering ${compiler}" >&2
+				continue
+			fi
+		fi
+
+		# for non-javac, we need to make sure it supports the right target and
+		# source
+		local compiler_env="${JAVA_PKG_COMPILER_DIR}/${compiler}"
+		if [[ -f ${compiler_env} ]]; then
+			local desired_target="$(java-pkg_get-target)"
+			local desired_source="$(java-pkg_get-source)"
+
+
+			# Verify that the compiler supports target
+			local supported_target=$(source ${compiler_env} 1>/dev/null 2>&1; echo ${SUPPORTED_TARGET})
+			if ! has ${desired_target} ${supported_target}; then
+				ewarn "${compiler} does not support -target ${desired_target},	skipping"
+				continue
+			fi
+
+			# Verify that the compiler supports source
+			local supported_source=$(source ${compiler_env} 1>/dev/null 2>&1; echo ${SUPPORTED_SOURCE})
+			if ! has ${desired_source} ${supported_source}; then
+				ewarn "${compiler} does not support -source ${desired_source}, skipping"
+				continue
+			fi
+
+			# if you get here, then the compiler should be good to go
+			export GENTOO_COMPILER="${compiler}"
+			break
+		else
+			ewarn "Could not find configuration for ${compiler}, skipping"
+			ewarn "Perhaps it is not installed?"
+			continue
+		fi
+	done
+
+	# If it hasn't been defined already, default to javac
+	if [[ -z ${GENTOO_COMPILER} ]]; then
+		if [[ -n ${compilers} ]]; then
+			einfo "No suitable compiler found: defaulting to JDK default for compilation" >&2
+		else
+			# probably don't need to notify users about the default.
+			:;#einfo "Defaulting to javac for compilation" >&2
+		fi
+		if java-config -g GENTOO_COMPILER 2> /dev/null; then
+			export GENTOO_COMPILER=$(java-config -g GENTOO_COMPILER)
+		else
+			export GENTOO_COMPILER=javac
+		fi
+	else
+		einfo "Using ${GENTOO_COMPILER} for compilation" >&2
+	fi
+
+}
+
+# @FUNCTION: init_paths_
+# @INTERNAL
+# @DESCRIPTION:
+# Initializes some variables that will be used. These variables are mostly used
+# to determine where things will eventually get installed.
+java-pkg_init_paths_() {
+	debug-print-function ${FUNCNAME} $*
+
+	local pkg_name
+	if [[ "${SLOT%/*}" == "0" ]] ; then
+		JAVA_PKG_NAME="${PN}"
+	else
+		JAVA_PKG_NAME="${PN}-${SLOT%/*}"
+	fi
+
+	JAVA_PKG_SHAREPATH="/usr/share/${JAVA_PKG_NAME}"
+	JAVA_PKG_SOURCESPATH="${JAVA_PKG_SHAREPATH}/sources/"
+	JAVA_PKG_ENV="${ED}${JAVA_PKG_SHAREPATH}/package.env"
+	JAVA_PKG_VIRTUALS_PATH="/usr/share/java-config-2/virtuals"
+	JAVA_PKG_VIRTUAL_PROVIDER="${ED}${JAVA_PKG_VIRTUALS_PATH}/${JAVA_PKG_NAME}"
+
+	[[ -z "${JAVA_PKG_JARDEST}" ]] && JAVA_PKG_JARDEST="${JAVA_PKG_SHAREPATH}/lib"
+	[[ -z "${JAVA_PKG_LIBDEST}" ]] && JAVA_PKG_LIBDEST="/usr/$(get_libdir)/${JAVA_PKG_NAME}"
+	[[ -z "${JAVA_PKG_WARDEST}" ]] && JAVA_PKG_WARDEST="${JAVA_PKG_SHAREPATH}/webapps"
+
+	# TODO maybe only print once?
+	debug-print "JAVA_PKG_SHAREPATH: ${JAVA_PKG_SHAREPATH}"
+	debug-print "JAVA_PKG_ENV: ${JAVA_PKG_ENV}"
+	debug-print "JAVA_PKG_JARDEST: ${JAVA_PKG_JARDEST}"
+	debug-print "JAVA_PKG_LIBDEST: ${JAVA_PKG_LIBDEST}"
+	debug-print "JAVA_PKG_WARDEST: ${JAVA_PKG_WARDEST}"
+}
+
+# @FUNCTION: java-pkg_do_write_
+# @INTERNAL
+# @DESCRIPTION:
+# Writes the package.env out to disk.
+#
+# TODO change to do-write, to match everything else
+java-pkg_do_write_() {
+	debug-print-function ${FUNCNAME} $*
+	java-pkg_init_paths_
+	# Create directory for package.env
+	dodir "${JAVA_PKG_SHAREPATH}"
+
+	# Create package.env
+	(
+		echo "DESCRIPTION=\"${DESCRIPTION}\""
+		echo "GENERATION=\"2\""
+		echo "SLOT=\"${SLOT}\""
+		echo "CATEGORY=\"${CATEGORY}\""
+		echo "PVR=\"${PVR}\""
+
+		[[ -n "${JAVA_PKG_CLASSPATH}" ]] && echo "CLASSPATH=\"${JAVA_PKG_CLASSPATH}\""
+		[[ -n "${JAVA_PKG_LIBRARY}" ]] && echo "LIBRARY_PATH=\"${JAVA_PKG_LIBRARY}\""
+		[[ -n "${JAVA_PROVIDE}" ]] && echo "PROVIDES=\"${JAVA_PROVIDE}\""
+		[[ -f "${JAVA_PKG_DEPEND_FILE}" ]] \
+			&& echo "DEPEND=\"$(sort -u "${JAVA_PKG_DEPEND_FILE}" | tr '\n' ':')\""
+		[[ -f "${JAVA_PKG_OPTIONAL_DEPEND_FILE}" ]] \
+			&& echo "OPTIONAL_DEPEND=\"$(sort -u "${JAVA_PKG_OPTIONAL_DEPEND_FILE}" | tr '\n' ':')\""
+		echo "VM=\"$(echo ${RDEPEND} ${DEPEND} | sed -e 's/ /\n/g' | sed -n -e '/virtual\/\(jre\|jdk\)/ { p;q }')\"" # TODO cleanup !
+		[[ -f "${JAVA_PKG_BUILD_DEPEND_FILE}" ]] \
+			&& echo "BUILD_DEPEND=\"$(sort -u "${JAVA_PKG_BUILD_DEPEND_FILE}" | tr '\n' ':')\""
+	) > "${JAVA_PKG_ENV}"
+
+	# register target/source
+	local target="$(java-pkg_get-target)"
+	local source="$(java-pkg_get-source)"
+	[[ -n ${target} ]] && echo "TARGET=\"${target}\"" >> "${JAVA_PKG_ENV}"
+	[[ -n ${source} ]] && echo "SOURCE=\"${source}\"" >> "${JAVA_PKG_ENV}"
+
+	# register javadoc info
+	[[ -n ${JAVADOC_PATH} ]] && echo "JAVADOC_PATH=\"${JAVADOC_PATH}\"" \
+		>> ${JAVA_PKG_ENV}
+	# register source archives
+	[[ -n ${JAVA_SOURCES} ]] && echo "JAVA_SOURCES=\"${JAVA_SOURCES}\"" \
+		>> ${JAVA_PKG_ENV}
+
+	echo "MERGE_VM=\"${GENTOO_VM}\"" >> "${JAVA_PKG_ENV}"
+	[[ -n ${GENTOO_COMPILER} ]] && echo "MERGE_COMPILER=\"${GENTOO_COMPILER}\"" >> "${JAVA_PKG_ENV}"
+
+	# extra env variables
+	if [[ -n "${JAVA_PKG_EXTRA_ENV_VARS}" ]]; then
+		cat "${JAVA_PKG_EXTRA_ENV}" >> "${JAVA_PKG_ENV}" || die
+		# nested echo to remove leading/trailing spaces
+		echo "ENV_VARS=\"$(echo ${JAVA_PKG_EXTRA_ENV_VARS})\"" \
+			>> "${JAVA_PKG_ENV}" || die
+	fi
+
+	# Strip unnecessary leading and trailing colons
+	# TODO try to cleanup if possible
+	sed -e "s/=\":/=\"/" -e "s/:\"$/\"/" -i "${JAVA_PKG_ENV}" || die "Did you forget to call java_init ?"
+}
+
+# @FUNCTION: java-pkg_record-jar_
+# @INTERNAL
+# @DESCRIPTION:
+# Record an (optional) dependency to the package.env
+# @CODE
+# Parameters:
+# --optional - record dependency as optional
+# --build - record dependency as build_only
+# $1 - package to record
+# $2 - (optional) jar of package to record
+# @CODE
+JAVA_PKG_DEPEND_FILE="${T}/java-pkg-depend"
+JAVA_PKG_OPTIONAL_DEPEND_FILE="${T}/java-pkg-optional-depend"
+JAVA_PKG_BUILD_DEPEND_FILE="${T}/java-pkg-build-depend"
+
+java-pkg_record-jar_() {
+	debug-print-function ${FUNCNAME} $*
+
+	local depend_file="${JAVA_PKG_DEPEND_FILE}"
+	case "${1}" in
+		"--optional") depend_file="${JAVA_PKG_OPTIONAL_DEPEND_FILE}"; shift;;
+		"--build-only") depend_file="${JAVA_PKG_BUILD_DEPEND_FILE}"; shift;;
+	esac
+
+	local pkg=${1} jar=${2} append
+	if [[ -z "${jar}" ]]; then
+		append="${pkg}"
+	else
+		append="$(basename ${jar})@${pkg}"
+	fi
+
+	echo "${append}" >> "${depend_file}"
+}
+
+# @FUNCTION: java-pkg_append_
+# @INTERNAL
+# @DESCRIPTION:
+# Appends a value to a variable
+#
+# @CODE
+# Parameters:
+# $1 variable name to modify
+# $2 value to append
+#
+# Examples:
+#	java-pkg_append_ CLASSPATH foo.jar
+# @CODE
+java-pkg_append_() {
+	debug-print-function ${FUNCNAME} $*
+
+	local var="${1}" value="${2}"
+	if [[ -z "${!var}" ]] ; then
+		export ${var}="${value}"
+	else
+		local oldIFS=${IFS} cur haveit
+		IFS=':'
+		for cur in ${!var}; do
+			if [[ ${cur} == ${value} ]]; then
+				haveit="yes"
+				break
+			fi
+		done
+		[[ -z ${haveit} ]] && export ${var}="${!var}:${value}"
+		IFS=${oldIFS}
+	fi
+}
+
+# @FUNCTION: java-pkg_expand_dir_
+# @INTERNAL
+# @DESCRIPTION:
+# Gets the full path of the file/directory's parent.
+# @CODE
+# Parameters:
+# $1 - file/directory to find parent directory for
+# @CODE
+# @RETURN: path to $1's parent directory
+java-pkg_expand_dir_() {
+	pushd "$(dirname "${1}")" >/dev/null 2>&1 || die
+	pwd
+	popd >/dev/null 2>&1 || die
+}
+
+# @FUNCTION: java-pkg_func-exists
+# @INTERNAL
+# @DESCRIPTION:
+# Does the indicated function exist?
+# @RETURN: 0 - function is declared, 1 - function is undeclared
+java-pkg_func-exists() {
+	declare -F ${1} > /dev/null
+}
+
+# @FUNCTION: java-pkg_setup-vm
+# @INTERNAL
+# @DESCRIPTION:
+# Sets up the environment for a specific VM
+java-pkg_setup-vm() {
+	debug-print-function ${FUNCNAME} $*
+
+	local vendor="$(java-pkg_get-vm-vendor)"
+	if [[ "${vendor}" == "sun" ]] && java-pkg_is-vm-version-ge "1.5" ; then
+		addpredict "/dev/random"
+	elif [[ "${vendor}" == "ibm" ]]; then
+		addpredict "/proc/self/maps"
+		addpredict "/proc/cpuinfo"
+		addpredict "/proc/self/coredump_filter"
+	elif [[ "${vendor}" == "oracle" ]]; then
+		addpredict "/dev/random"
+		addpredict "/proc/self/coredump_filter"
+	elif [[ "${vendor}" == icedtea* ]] && java-pkg_is-vm-version-ge "1.7" ; then
+		addpredict "/dev/random"
+		addpredict "/proc/self/coredump_filter"
+	elif [[ "${vendor}" == "jrockit" ]]; then
+		addpredict "/proc/cpuinfo"
+	fi
+}
+
+# @FUNCTION: java-pkg_needs-vm
+# @INTERNAL
+# @DESCRIPTION:
+# Does the current package depend on virtual/jdk or does it set
+# JAVA_PKG_WANT_BUILD_VM?
+#
+# @RETURN: 0 - Package depends on virtual/jdk; 1 - Package does not depend on virtual/jdk
+java-pkg_needs-vm() {
+	debug-print-function ${FUNCNAME} $*
+
+	if [[ -n "$(echo ${JAVA_PKG_NV_DEPEND:-${DEPEND}} | sed -e '\:virtual/jdk:!d')" ]]; then
+		return 0
+	fi
+
+	[[ -n "${JAVA_PKG_WANT_BUILD_VM}" ]] && return 0
+
+	return 1
+}
+
+# @FUNCTION: java-pkg_get-current-vm
+# @INTERNAL
+# @RETURN - The current VM being used
+java-pkg_get-current-vm() {
+	java-config -f
+}
+
+# @FUNCTION: java-pkg_get-vm-vendor
+# @INTERNAL
+# @RETURN - The vendor of the current VM
+java-pkg_get-vm-vendor() {
+	debug-print-function ${FUNCNAME} $*
+
+	local vm="$(java-pkg_get-current-vm)"
+	vm="${vm/-*/}"
+	echo "${vm}"
+}
+
+# @FUNCTION: java-pkg_get-vm-version
+# @INTERNAL
+# @RETURN - The version of the current VM
+java-pkg_get-vm-version() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-config -g PROVIDES_VERSION
+}
+
+# @FUNCTION: java-pkg_build-vm-from-handle
+# @INTERNAL
+# @DESCRIPTION:
+# Selects a build vm from a list of vm handles. First checks for the system-vm
+# beeing usable, then steps through the listed handles till a suitable vm is
+# found.
+#
+# @RETURN - VM handle of an available JDK
+java-pkg_build-vm-from-handle() {
+	debug-print-function ${FUNCNAME} "$*"
+
+	local vm
+	vm=$(java-pkg_get-current-vm 2>/dev/null)
+	if [[ $? -eq 0 ]]; then
+		if has ${vm} ${JAVA_PKG_WANT_BUILD_VM}; then
+			echo ${vm}
+			return 0
+		fi
+	fi
+
+	for vm in ${JAVA_PKG_WANT_BUILD_VM}; do
+		if java-config-2 --select-vm=${vm} 2>/dev/null; then
+			echo ${vm}
+			return 0
+		fi
+	done
+
+	eerror "${FUNCNAME}: No vm found for handles: ${JAVA_PKG_WANT_BUILD_VM}"
+	return 1
+}
+
+# @FUNCTION: java-pkg_switch-vm
+# @INTERNAL
+# @DESCRIPTION:
+# Switch VM if we're allowed to (controlled by JAVA_PKG_ALLOW_VM_CHANGE), and
+# verify that the current VM is sufficient.
+# Setup the environment for the VM being used.
+java-pkg_switch-vm() {
+	debug-print-function ${FUNCNAME} $*
+
+	if java-pkg_needs-vm; then
+		# Use the VM specified by JAVA_PKG_FORCE_VM
+		if [[ -n "${JAVA_PKG_FORCE_VM}" ]]; then
+			# If you're forcing the VM, I hope you know what your doing...
+			debug-print "JAVA_PKG_FORCE_VM used: ${JAVA_PKG_FORCE_VM}"
+			export GENTOO_VM="${JAVA_PKG_FORCE_VM}"
+		# if we're allowed to switch the vm...
+		elif [[ "${JAVA_PKG_ALLOW_VM_CHANGE}" == "yes" ]]; then
+			# if there is an explicit list of handles to choose from
+			if [[ -n "${JAVA_PKG_WANT_BUILD_VM}" ]]; then
+				debug-print "JAVA_PKG_WANT_BUILD_VM used: ${JAVA_PKG_WANT_BUILD_VM}"
+				GENTOO_VM=$(java-pkg_build-vm-from-handle)
+				if [[ $? != 0 ]]; then
+					eerror "${FUNCNAME}: No VM found for handles: ${JAVA_PKG_WANT_BUILD_VM}"
+					die "${FUNCNAME}: Failed to determine VM for building"
+				fi
+				# JAVA_PKG_WANT_SOURCE and JAVA_PKG_WANT_TARGET are required as
+				# they can't be deduced from handles.
+				if [[ -z "${JAVA_PKG_WANT_SOURCE}" ]]; then
+					eerror "JAVA_PKG_WANT_BUILD_VM specified but not JAVA_PKG_WANT_SOURCE"
+					die "Specify JAVA_PKG_WANT_SOURCE"
+				fi
+				if [[ -z "${JAVA_PKG_WANT_TARGET}" ]]; then
+					eerror "JAVA_PKG_WANT_BUILD_VM specified but not JAVA_PKG_WANT_TARGET"
+					die "Specify JAVA_PKG_WANT_TARGET"
+				fi
+			# otherwise determine a vm from dep string
+			else
+				debug-print "depend-java-query:  NV_DEPEND:	${JAVA_PKG_NV_DEPEND:-${DEPEND}}"
+				GENTOO_VM="$(depend-java-query --get-vm "${JAVA_PKG_NV_DEPEND:-${DEPEND}}")"
+				if [[ -z "${GENTOO_VM}" || "${GENTOO_VM}" == "None" ]]; then
+					eerror "Unable to determine VM for building from dependencies:"
+					echo "NV_DEPEND: ${JAVA_PKG_NV_DEPEND:-${DEPEND}}"
+					die "Failed to determine VM for building."
+				fi
+			fi
+			export GENTOO_VM
+		# otherwise just make sure the current VM is sufficient
+		else
+			java-pkg_ensure-vm-version-sufficient
+		fi
+		debug-print "Using: $(java-config -f)"
+
+		java-pkg_setup-vm
+
+		export JAVA=$(java-config --java)
+		export JAVAC=$(java-config --javac)
+		JAVACFLAGS="$(java-pkg_javac-args)"
+		[[ -n ${JAVACFLAGS_EXTRA} ]] && JAVACFLAGS="${JAVACFLAGS_EXTRA} ${JAVACFLAGS}"
+		export JAVACFLAGS
+
+		export JAVA_HOME="$(java-config -g JAVA_HOME)"
+		export JDK_HOME=${JAVA_HOME}
+
+		#TODO If you know a better solution let us know.
+		java-pkg_append_ LD_LIBRARY_PATH "$(java-config -g LDPATH)"
+
+		local tann="${T}/announced-vm"
+		# With the hooks we should only get here once from pkg_setup but better safe than sorry
+		# if people have for example modified eclasses some where
+		if [[ -n "${JAVA_PKG_DEBUG}" ]] || [[ ! -f "${tann}" ]] ; then
+			einfo "Using: $(java-config -f)"
+			[[ ! -f "${tann}" ]] && touch "${tann}"
+		fi
+
+	else
+		[[ -n "${JAVA_PKG_DEBUG}" ]] && ewarn "!!! This package inherits java-pkg but doesn't depend on a JDK. -bin or broken dependency!!!"
+	fi
+}
+
+# @FUNCTION: java-pkg_die
+# @INTERNAL
+# @DESCRIPTION:
+# Enhanced die for Java packages, which displays some information that may be
+# useful for debugging bugs on bugzilla.
+#register_die_hook java-pkg_die
+if ! has java-pkg_die ${EBUILD_DEATH_HOOKS}; then
+	EBUILD_DEATH_HOOKS="${EBUILD_DEATH_HOOKS} java-pkg_die"
+fi
+
+java-pkg_die() {
+	echo "!!! When you file a bug report, please include the following information:" >&2
+	echo "GENTOO_VM=${GENTOO_VM}  CLASSPATH=\"${CLASSPATH}\" JAVA_HOME=\"${JAVA_HOME}\"" >&2
+	echo "JAVACFLAGS=\"${JAVACFLAGS}\" COMPILER=\"${GENTOO_COMPILER}\"" >&2
+	echo "and of course, the output of emerge --info =${P}" >&2
+}
+
+
+# TODO document
+# List jars in the source directory, ${S}
+java-pkg_jar-list() {
+	if [[ -n "${JAVA_PKG_DEBUG}" ]]; then
+		einfo "Linked Jars"
+		find "${S}" -type l -name '*.jar' -print0 | xargs -0 -r -n 500 ls -ald | sed -e "s,${WORKDIR},\${WORKDIR},"
+		einfo "Jars"
+		find "${S}" -type f -name '*.jar' -print0 | xargs -0 -r -n 500 ls -ald | sed -e "s,${WORKDIR},\${WORKDIR},"
+		einfo "Classes"
+		find "${S}" -type f -name '*.class' -print0 | xargs -0 -r -n 500 ls -ald | sed -e "s,${WORKDIR},\${WORKDIR},"
+	fi
+}
+
+# @FUNCTION: java-pkg_verify-classes
+# @INTERNAL
+# @DESCRIPTION:
+# Verify that the classes were compiled for the right source / target. Dies if
+# not.
+# @CODE
+# $1 (optional) - the file to check, otherwise checks whole ${D}
+# @CODE
+java-pkg_verify-classes() {
+	#$(find ${ED} -type f -name '*.jar' -o -name '*.class')
+
+	local version_verify="/usr/bin/class-version-verify.py"
+
+	if [[ ! -x "${version_verify}" ]]; then
+		version_verify="/usr/$(get_libdir)/javatoolkit/bin/class-version-verify.py"
+	fi
+
+	if [[ ! -x "${version_verify}" ]]; then
+		ewarn "Unable to perform class version checks as"
+		ewarn "class-version-verify.py is unavailable"
+		ewarn "Please install dev-java/javatoolkit."
+		return
+	fi
+
+	local target=$(java-pkg_get-target)
+	local result
+	local log="${T}/class-version-verify.log"
+	if [[ -n "${1}" ]]; then
+		${version_verify} -v -t ${target} "${1}" > "${log}"
+		result=$?
+	else
+		ebegin "Verifying java class versions (target: ${target})"
+		${version_verify} -v -t ${target} -r "${ED}" > "${log}"
+		result=$?
+		eend ${result}
+	fi
+	[[ -n ${JAVA_PKG_DEBUG} ]] && cat "${log}"
+	if [[ ${result} != 0 ]]; then
+		eerror "Incorrect bytecode version found"
+		[[ -n "${1}" ]] && eerror "in file: ${1}"
+		eerror "See ${log} for more details."
+		die "Incorrect bytecode found"
+	fi
+}
+
+# @FUNCTION: java-pkg_ensure-dep
+# @INTERNAL
+# @DESCRIPTION:
+# Check that a package being used in jarfrom, getjars and getjar is contained
+# within DEPEND or RDEPEND with the correct SLOT. See this mail for details:
+# https://archives.gentoo.org/gentoo-dev/message/dcb644f89520f4bbb61cc7bbe45fdf6e
+# @CODE
+# Parameters:
+# $1 - empty - check both vars; "runtime" or "build" - check only
+#	RDEPEND, resp. DEPEND
+# $2 - Package name and slot.
+# @CODE
+java-pkg_ensure-dep() {
+	debug-print-function ${FUNCNAME} $*
+
+	local limit_to="${1}"
+	local target_pkg="${2}"
+	local dev_error=""
+
+	# Transform into a regular expression to look for a matching package
+	# and SLOT. SLOTs don't have to be numeric so foo-bar could either
+	# mean foo-bar:0 or foo:bar. So you want to get your head around the
+	# line below?
+	#
+	# * The target package first has any dots escaped, e.g. foo-1.2
+	#   becomes foo-1\.2.
+	#
+	# * sed then looks at the component following the last - or :
+	#   character, or the whole string if there is no - or :
+	#   character. It uses this to build a new regexp with two
+	#   significant branches.
+	#
+	# * The first checks for the whole target package string, optionally
+	#   followed by a version number, and then :0.
+	#
+	# * The second checks for the first part of the target package
+	#   string, optionally followed by a version number, followed by the
+	#   aforementioned component, treating that as a SLOT.
+	#
+	local stripped_pkg=/$(sed -r 's/[-:]?([^-:]+)$/(\0(-[^:]+)?:0|(-[^:]+)?:\1)/' <<< "${target_pkg//./\\.}")\\b
+
+	debug-print "Matching against: ${stripped_pkg}"
+
+	# Uncomment the lines below once we've dealt with more of these
+	# otherwise we'll be tempted to turn JAVA_PKG_STRICT off while
+	# getting hit with a wave of bug reports. :(
+
+	if [[ ${limit_to} != runtime && ! ( "${DEPEND}" =~ $stripped_pkg ) ]]; then
+		dev_error="The ebuild is attempting to use ${target_pkg}, which is not "
+		dev_error+="declared with a SLOT in DEPEND."
+#		if is-java-strict; then
+#			die "${dev_error}"
+#		else
+			eqawarn "java-pkg_ensure-dep: ${dev_error}"
+#			eerror "Because you have ${target_pkg} installed,"
+#			eerror "the package will build without problems, but please"
+#			eerror "report this to https://bugs.gentoo.org."
+#		fi
+	elif [[ ${limit_to} != build && ! ( "${RDEPEND}${PDEPEND}" =~ ${stripped_pkg} ) ]]; then
+		dev_error="The ebuild is attempting to use ${target_pkg}, which is not "
+		dev_error+="declared with a SLOT in [RP]DEPEND and --build-only wasn't given."
+#		if is-java-strict; then
+#			die "${dev_error}"
+#		else
+			eqawarn "java-pkg_ensure-dep: ${dev_error}"
+#			eerror "The package will build without problems, but may fail to run"
+#			eerror "if you don't have ${target_pkg} installed,"
+#			eerror "so please report this to https://bugs.gentoo.org."
+#		fi
+	fi
+}
+
+java-pkg_check-phase() {
+	local phase=${1}
+	local funcname=${FUNCNAME[1]}
+	if [[ ${EBUILD_PHASE} != ${phase} ]]; then
+		local msg="${funcname} used outside of src_${phase}"
+		java-pkg_announce-qa-violation "${msg}"
+	fi
+}
+
+java-pkg_check-versioned-jar() {
+	local jar=${1}
+
+	if [[ ${jar} =~ ${PV} ]]; then
+		java-pkg_announce-qa-violation "installing versioned jar '${jar}'"
+	fi
+}
+
+java-pkg_check-jikes() {
+	if has jikes ${IUSE}; then
+		java-pkg_announce-qa-violation "deprecated USE flag 'jikes' in IUSE"
+	fi
+}
+
+java-pkg_announce-qa-violation() {
+	local nodie
+	if [[ ${1} == "--nodie" ]]; then
+		nodie="true"
+		shift
+	fi
+	echo "Java QA Notice: $@" >&2
+	increment-qa-violations
+	[[ -z "${nodie}" ]] && is-java-strict && die "${@}"
+}
+
+increment-qa-violations() {
+	let "JAVA_PKG_QA_VIOLATIONS+=1"
+	export JAVA_PKG_QA_VIOLATIONS
+}
+
+is-java-strict() {
+	[[ -n ${JAVA_PKG_STRICT} ]]
+	return $?
+}
+
+# @FUNCTION: java-pkg_clean
+# @DESCRIPTION:
+# Java package cleaner function. This will remove all *.class and *.jar
+# files, removing any bundled dependencies.
+java-pkg_clean() {
+	if [[ -z "${JAVA_PKG_NO_CLEAN}" ]]; then
+		find "${@}" '(' -name '*.class' -o -name '*.jar' ')' -type f -delete -print || die
+	fi
+}
diff --git a/eclass/linux-info.eclass b/eclass/linux-info.eclass
new file mode 100644
index 0000000..5267bd1
--- /dev/null
+++ b/eclass/linux-info.eclass
@@ -0,0 +1,925 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# @ECLASS: linux-info.eclass
+# @MAINTAINER:
+# kernel@gentoo.org
+# @AUTHOR:
+# Original author: John Mylchreest <johnm@gentoo.org>
+# @BLURB: eclass used for accessing kernel related information
+# @DESCRIPTION:
+# This eclass is used as a central eclass for accessing kernel
+# related information for source or binary already installed.
+# It is vital for linux-mod.eclass to function correctly, and is split
+# out so that any ebuild behaviour "templates" are abstracted out
+# using additional eclasses.
+#
+# "kernel config" in this file means:
+# The .config of the currently installed sources is used as the first
+# preference, with a fall-back to bundled config (/proc/config.gz) if available.
+#
+# Before using any of the config-handling functions in this eclass, you must
+# ensure that one of the following functions has been called (in order of
+# preference), otherwise you will get bugs like #364041):
+# linux-info_pkg_setup
+# linux-info_get_any_version
+# get_version
+# get_running_version
+
+# A Couple of env vars are available to effect usage of this eclass
+# These are as follows:
+
+# @ECLASS-VARIABLE: KERNEL_DIR
+# @DESCRIPTION:
+# A string containing the directory of the target kernel sources. The default value is
+# "/usr/src/linux"
+
+# @ECLASS-VARIABLE: CONFIG_CHECK
+# @DESCRIPTION:
+# A string containing a list of .config options to check for before
+# proceeding with the install.
+#
+#   e.g.: CONFIG_CHECK="MTRR"
+#
+# You can also check that an option doesn't exist by
+# prepending it with an exclamation mark (!).
+#
+#   e.g.: CONFIG_CHECK="!MTRR"
+#
+# To simply warn about a missing option, prepend a '~'.
+# It may be combined with '!'.
+#
+# In general, most checks should be non-fatal. The only time fatal checks should
+# be used is for building kernel modules or cases that a compile will fail
+# without the option.
+#
+# This is to allow usage of binary kernels, and minimal systems without kernel
+# sources.
+
+# @ECLASS-VARIABLE: ERROR_<CFG>
+# @DESCRIPTION:
+# A string containing the error message to display when the check against CONFIG_CHECK
+# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
+#
+#   e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
+
+# @ECLASS-VARIABLE: KBUILD_OUTPUT
+# @DESCRIPTION:
+# A string passed on commandline, or set from the kernel makefile. It contains the directory
+# which is to be used as the kernel object directory.
+
+# There are also a couple of variables which are set by this, and shouldn't be
+# set by hand. These are as follows:
+
+# @ECLASS-VARIABLE: KV_FULL
+# @DESCRIPTION:
+# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
+
+# @ECLASS-VARIABLE: KV_MAJOR
+# @DESCRIPTION:
+# A read-only variable. It's an integer containing the kernel major version. ie: 2
+
+# @ECLASS-VARIABLE: KV_MINOR
+# @DESCRIPTION:
+# A read-only variable. It's an integer containing the kernel minor version. ie: 6
+
+# @ECLASS-VARIABLE: KV_PATCH
+# @DESCRIPTION:
+# A read-only variable. It's an integer containing the kernel patch version. ie: 9
+
+# @ECLASS-VARIABLE: KV_EXTRA
+# @DESCRIPTION:
+# A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
+
+# @ECLASS-VARIABLE: KV_LOCAL
+# @DESCRIPTION:
+# A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
+
+# @ECLASS-VARIABLE: KV_DIR
+# @DESCRIPTION:
+# A read-only variable. It's a string containing the kernel source directory, will be null if
+# KERNEL_DIR is invalid.
+
+# @ECLASS-VARIABLE: KV_OUT_DIR
+# @DESCRIPTION:
+# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
+# KBUILD_OUTPUT is used. This should be used for referencing .config.
+
+# And to ensure all the weirdness with crosscompile
+inherit toolchain-funcs versionator
+
+EXPORT_FUNCTIONS pkg_setup
+
+# Overwritable environment Var's
+# ---------------------------------------
+KERNEL_DIR="${KERNEL_DIR:-${EROOT}usr/src/linux}"
+
+
+# Bug fixes
+# fix to bug #75034
+case ${ARCH} in
+	ppc)	BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
+	ppc64)	BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
+esac
+
+# @FUNCTION: set_arch_to_kernel
+# @DESCRIPTION:
+# Set the env ARCH to match what the kernel expects.
+set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
+# @FUNCTION: set_arch_to_portage
+# @DESCRIPTION:
+# Set the env ARCH to match what portage expects.
+set_arch_to_portage() { export ARCH=$(tc-arch); }
+
+# qeinfo "Message"
+# -------------------
+# qeinfo is a quiet einfo call when EBUILD_PHASE
+# should not have visible output.
+qout() {
+	local outputmsg type
+	type=${1}
+	shift
+	outputmsg="${@}"
+	case "${EBUILD_PHASE}" in
+		depend)  unset outputmsg;;
+		clean)   unset outputmsg;;
+		preinst) unset outputmsg;;
+	esac
+	[ -n "${outputmsg}" ] && ${type} "${outputmsg}"
+}
+
+qeinfo() { qout einfo "${@}" ; }
+qewarn() { qout ewarn "${@}" ; }
+qeerror() { qout eerror "${@}" ; }
+
+# File Functions
+# ---------------------------------------
+
+# @FUNCTION: getfilevar
+# @USAGE: variable configfile
+# @RETURN: the value of the variable
+# @DESCRIPTION:
+# It detects the value of the variable defined in the file configfile. This is
+# done by including the configfile, and printing the variable with Make.
+# It WILL break if your makefile has missing dependencies!
+getfilevar() {
+	local ERROR basefname basedname myARCH="${ARCH}" M="${S}"
+	ERROR=0
+
+	[ -z "${1}" ] && ERROR=1
+	[ ! -f "${2}" ] && ERROR=1
+
+	if [ "${ERROR}" = 1 ]
+	then
+		echo -e "\n"
+		eerror "getfilevar requires 2 variables, with the second a valid file."
+		eerror "   getfilevar <VARIABLE> <CONFIGFILE>"
+	else
+		basefname="$(basename ${2})"
+		basedname="$(dirname ${2})"
+		unset ARCH
+
+		# We use nonfatal because we want the caller to take care of things #373151
+		[[ ${EAPI:-0} == [0123] ]] && nonfatal() { "$@"; }
+		case ${EBUILD_PHASE_FUNC} in
+			pkg_info|pkg_nofetch|pkg_pretend) M="${T}" ;;
+		esac
+		echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
+			nonfatal emake -C "${basedname}" M="${M}" ${BUILD_FIXES} -s -f - 2>/dev/null
+
+		ARCH=${myARCH}
+	fi
+}
+
+# @FUNCTION: getfilevar_noexec
+# @USAGE: variable configfile
+# @RETURN: the value of the variable
+# @DESCRIPTION:
+# It detects the value of the variable defined in the file configfile.
+# This is done with sed matching an expression only. If the variable is defined,
+# you will run into problems. See getfilevar for those cases.
+getfilevar_noexec() {
+	local ERROR basefname basedname mycat myARCH="${ARCH}"
+	ERROR=0
+	mycat='cat'
+
+	[ -z "${1}" ] && ERROR=1
+	[ ! -f "${2}" ] && ERROR=1
+	[ "${2%.gz}" != "${2}" ] && mycat='zcat'
+
+	if [ "${ERROR}" = 1 ]
+	then
+		echo -e "\n"
+		eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
+		eerror "   getfilevar_noexec <VARIABLE> <CONFIGFILE>"
+	else
+		${mycat} "${2}" | \
+		sed -n \
+		-e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
+			s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
+			s,[[:space:]]*\$,,g ;
+			p
+		}"
+	fi
+}
+
+# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
+# @INTERNAL
+# @DESCRIPTION:
+# This is only set if one of the linux_config_*exists functions has been called.
+# We use it for a QA warning that the check for a config has not been performed,
+# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
+# config is available at all.
+_LINUX_CONFIG_EXISTS_DONE=
+
+linux_config_qa_check() {
+	local f="$1"
+	if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
+		ewarn "QA: You called $f before any linux_config_exists!"
+		ewarn "QA: The return value of $f will NOT guaranteed later!"
+	fi
+}
+
+# @FUNCTION: linux_config_src_exists
+# @RETURN: true or false
+# @DESCRIPTION:
+# It returns true if .config exists in a build directory otherwise false
+linux_config_src_exists() {
+	export _LINUX_CONFIG_EXISTS_DONE=1
+	[[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
+}
+
+# @FUNCTION: linux_config_bin_exists
+# @RETURN: true or false
+# @DESCRIPTION:
+# It returns true if .config exists in /proc, otherwise false
+linux_config_bin_exists() {
+	export _LINUX_CONFIG_EXISTS_DONE=1
+	[[ -s /proc/config.gz ]]
+}
+
+# @FUNCTION: linux_config_exists
+# @RETURN: true or false
+# @DESCRIPTION:
+# It returns true if .config exists otherwise false
+#
+# This function MUST be checked before using any of the linux_chkconfig_*
+# functions.
+linux_config_exists() {
+	linux_config_src_exists || linux_config_bin_exists
+}
+
+# @FUNCTION: linux_config_path
+# @DESCRIPTION:
+# Echo the name of the config file to use.  If none are found,
+# then return false.
+linux_config_path() {
+	if linux_config_src_exists; then
+		echo "${KV_OUT_DIR}/.config"
+	elif linux_config_bin_exists; then
+		echo "/proc/config.gz"
+	else
+		return 1
+	fi
+}
+
+# @FUNCTION: require_configured_kernel
+# @DESCRIPTION:
+# This function verifies that the current kernel is configured (it checks against the existence of .config)
+# otherwise it dies.
+require_configured_kernel() {
+	if ! linux_config_src_exists; then
+		qeerror "Could not find a usable .config in the kernel source directory."
+		qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
+		qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
+		qeerror "it points to the necessary object directory so that it might find .config."
+		die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
+	fi
+}
+
+# @FUNCTION: linux_chkconfig_present
+# @USAGE: option
+# @RETURN: true or false
+# @DESCRIPTION:
+# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
+# If linux_config_exists returns false, the results of this are UNDEFINED. You
+# MUST call linux_config_exists first.
+linux_chkconfig_present() {
+	linux_config_qa_check linux_chkconfig_present
+	[[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == [my] ]]
+}
+
+# @FUNCTION: linux_chkconfig_module
+# @USAGE: option
+# @RETURN: true or false
+# @DESCRIPTION:
+# It checks that CONFIG_<option>=m is present in the current kernel .config
+# If linux_config_exists returns false, the results of this are UNDEFINED. You
+# MUST call linux_config_exists first.
+linux_chkconfig_module() {
+	linux_config_qa_check linux_chkconfig_module
+	[[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == m ]]
+}
+
+# @FUNCTION: linux_chkconfig_builtin
+# @USAGE: option
+# @RETURN: true or false
+# @DESCRIPTION:
+# It checks that CONFIG_<option>=y is present in the current kernel .config
+# If linux_config_exists returns false, the results of this are UNDEFINED. You
+# MUST call linux_config_exists first.
+linux_chkconfig_builtin() {
+	linux_config_qa_check linux_chkconfig_builtin
+	[[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == y ]]
+}
+
+# @FUNCTION: linux_chkconfig_string
+# @USAGE: option
+# @RETURN: CONFIG_<option>
+# @DESCRIPTION:
+# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
+# If linux_config_exists returns false, the results of this are UNDEFINED. You
+# MUST call linux_config_exists first.
+linux_chkconfig_string() {
+	linux_config_qa_check linux_chkconfig_string
+	getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
+}
+
+# Versioning Functions
+# ---------------------------------------
+
+# @FUNCTION: kernel_is
+# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
+# @RETURN: true or false
+# @DESCRIPTION:
+# It returns true when the current kernel version satisfies the comparison against the passed version.
+# -eq is the default comparison.
+#
+# @CODE
+# For Example where KV = 2.6.9
+# kernel_is 2 4   returns false
+# kernel_is 2     returns true
+# kernel_is 2 6   returns true
+# kernel_is 2 6 8 returns false
+# kernel_is 2 6 9 returns true
+# @CODE
+
+# Note: duplicated in kernel-2.eclass
+kernel_is() {
+	# if we haven't determined the version yet, we need to.
+	linux-info_get_any_version
+
+	# 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} ]
+}
+
+get_localversion() {
+	local lv_list i x
+
+	# ignore files with ~ in it.
+	for i in $(ls ${1}/localversion* 2>/dev/null); do
+		[[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
+	done
+
+	for i in ${lv_list}; do
+		x="${x}$(<${i})"
+	done
+	x=${x/ /}
+	echo ${x}
+}
+
+# Check if the Makefile is valid for direct parsing.
+# Check status results:
+# - PASS, use 'getfilevar' to extract values
+# - FAIL, use 'getfilevar_noexec' to extract values
+# The check may fail if:
+# - make is not present
+# - corruption exists in the kernel makefile
+get_makefile_extract_function() {
+	local a='' b='' mkfunc='getfilevar'
+	a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
+	b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
+	[[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
+	echo "${mkfunc}"
+}
+
+# internal variable, so we know to only print the warning once
+get_version_warning_done=
+
+# @FUNCTION: get_version
+# @DESCRIPTION:
+# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
+# (if KV_FULL is already set it does nothing).
+#
+# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
+#
+# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
+# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
+# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
+get_version() {
+	local tmplocal
+
+	# no need to execute this twice assuming KV_FULL is populated.
+	# we can force by unsetting KV_FULL
+	[ -n "${KV_FULL}" ] && return 0
+
+	# if we dont know KV_FULL, then we need too.
+	# make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
+	unset KV_DIR
+
+	# KV_DIR will contain the full path to the sources directory we should use
+	[ -z "${get_version_warning_done}" ] && \
+	qeinfo "Determining the location of the kernel source code"
+	[ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
+	[ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
+
+	if [ -z "${KV_DIR}" ]
+	then
+		if [ -z "${get_version_warning_done}" ]; then
+			get_version_warning_done=1
+			qewarn "Unable to find kernel sources at ${KERNEL_DIR}"
+			#qeinfo "This package requires Linux sources."
+			if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
+				qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
+				qeinfo "(or the kernel you wish to build against)."
+				qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
+			else
+				qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
+			fi
+		fi
+		return 1
+	fi
+
+	# See if the kernel dir is actually an output dir. #454294
+	if [ -z "${KBUILD_OUTPUT}" -a -L "${KERNEL_DIR}/source" ]; then
+		KBUILD_OUTPUT=${KERNEL_DIR}
+		KERNEL_DIR=$(readlink -f "${KERNEL_DIR}/source")
+		KV_DIR=${KERNEL_DIR}
+	fi
+
+	if [ -z "${get_version_warning_done}" ]; then
+		qeinfo "Found kernel source directory:"
+		qeinfo "    ${KV_DIR}"
+	fi
+
+	if [ ! -s "${KV_DIR}/Makefile" ]
+	then
+		if [ -z "${get_version_warning_done}" ]; then
+			get_version_warning_done=1
+			qeerror "Could not find a Makefile in the kernel source directory."
+			qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
+		fi
+		return 1
+	fi
+
+	# OK so now we know our sources directory, but they might be using
+	# KBUILD_OUTPUT, and we need this for .config and localversions-*
+	# so we better find it eh?
+	# do we pass KBUILD_OUTPUT on the CLI?
+	local OUTPUT_DIR=${KBUILD_OUTPUT}
+
+	# keep track of it
+	KERNEL_MAKEFILE="${KV_DIR}/Makefile"
+
+	if [[ -z ${OUTPUT_DIR} ]]; then
+		# Decide the function used to extract makefile variables.
+		local mkfunc=$(get_makefile_extract_function "${KERNEL_MAKEFILE}")
+
+		# And if we didn't pass it, we can take a nosey in the Makefile.
+		OUTPUT_DIR=$(${mkfunc} KBUILD_OUTPUT "${KERNEL_MAKEFILE}")
+	fi
+
+	# And contrary to existing functions I feel we shouldn't trust the
+	# directory name to find version information as this seems insane.
+	# So we parse ${KERNEL_MAKEFILE}.  We should be able to trust that
+	# the Makefile is simple enough to use the noexec extract function.
+	# This has been true for every release thus far, and it's faster
+	# than using make to evaluate the Makefile every time.
+	KV_MAJOR=$(getfilevar_noexec VERSION "${KERNEL_MAKEFILE}")
+	KV_MINOR=$(getfilevar_noexec PATCHLEVEL "${KERNEL_MAKEFILE}")
+	KV_PATCH=$(getfilevar_noexec SUBLEVEL "${KERNEL_MAKEFILE}")
+	KV_EXTRA=$(getfilevar_noexec EXTRAVERSION "${KERNEL_MAKEFILE}")
+
+	if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
+	then
+		if [ -z "${get_version_warning_done}" ]; then
+			get_version_warning_done=1
+			qeerror "Could not detect kernel version."
+			qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
+		fi
+		return 1
+	fi
+
+	# and in newer versions we can also pull LOCALVERSION if it is set.
+	# but before we do this, we need to find if we use a different object directory.
+	# This *WILL* break if the user is using localversions, but we assume it was
+	# caught before this if they are.
+	if [[ -z ${OUTPUT_DIR} ]] ; then
+		# Try to locate a kernel that is most relevant for us.
+		for OUTPUT_DIR in "${SYSROOT}" "${ROOT}" "" ; do
+			OUTPUT_DIR+="/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build"
+			if [[ -e ${OUTPUT_DIR} ]] ; then
+				break
+			fi
+		done
+	fi
+
+	[ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
+	[ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
+	if [ -n "${KV_OUT_DIR}" ];
+	then
+		qeinfo "Found kernel object directory:"
+		qeinfo "    ${KV_OUT_DIR}"
+	fi
+	# and if we STILL have not got it, then we better just set it to KV_DIR
+	KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
+
+	# Grab the kernel release from the output directory.
+	# TODO: we MUST detect kernel.release being out of date, and 'return 1' from
+	# this function.
+	if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
+		KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
+	elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
+		KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
+	else
+		KV_LOCAL=
+	fi
+
+	# KV_LOCAL currently contains the full release; discard the first bits.
+	tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
+
+	# If the updated local version was not changed, the tree is not prepared.
+	# Clear out KV_LOCAL in that case.
+	# TODO: this does not detect a change in the localversion part between
+	# kernel.release and the value that would be generated.
+	if [ "$KV_LOCAL" = "$tmplocal" ]; then
+		KV_LOCAL=
+	else
+		KV_LOCAL=$tmplocal
+	fi
+
+	# And we should set KV_FULL to the full expanded version
+	KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
+
+	qeinfo "Found sources for kernel version:"
+	qeinfo "    ${KV_FULL}"
+
+	return 0
+}
+
+# @FUNCTION: get_running_version
+# @DESCRIPTION:
+# It gets the version of the current running kernel and the result is the same as get_version() if the
+# function can find the sources.
+get_running_version() {
+	KV_FULL=$(uname -r)
+
+	if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
+		KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
+		KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
+		unset KV_FULL
+		get_version
+		return $?
+	elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
+		KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
+		unset KV_FULL
+		get_version
+		return $?
+	elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
+		KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
+		unset KV_FULL
+		get_version
+		return $?
+	else
+		# This handles a variety of weird kernel versions.  Make sure to update
+		# tests/linux-info_get_running_version.sh if you want to change this.
+		local kv_full=${KV_FULL//[-+_]*}
+		KV_MAJOR=$(get_version_component_range 1 ${kv_full})
+		KV_MINOR=$(get_version_component_range 2 ${kv_full})
+		KV_PATCH=$(get_version_component_range 3 ${kv_full})
+		KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
+		: ${KV_PATCH:=0}
+	fi
+	return 0
+}
+
+# This next function is named with the eclass prefix to avoid conflicts with
+# some old versionator-like eclass functions.
+
+# @FUNCTION: linux-info_get_any_version
+# @DESCRIPTION:
+# This attempts to find the version of the sources, and otherwise falls back to
+# the version of the running kernel.
+linux-info_get_any_version() {
+	get_version
+	if [[ $? -ne 0 ]]; then
+		ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
+		get_running_version
+	fi
+}
+
+
+# ebuild check functions
+# ---------------------------------------
+
+# @FUNCTION: check_kernel_built
+# @DESCRIPTION:
+# This function verifies that the current kernel sources have been already prepared otherwise it dies.
+check_kernel_built() {
+	# if we haven't determined the version yet, we need to
+	require_configured_kernel
+	get_version
+
+	local versionh_path
+	if kernel_is -ge 3 7; then
+		versionh_path="include/generated/uapi/linux/version.h"
+	else
+		versionh_path="include/linux/version.h"
+	fi
+
+	if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
+	then
+		eerror "These sources have not yet been prepared."
+		eerror "We cannot build against an unprepared tree."
+		eerror "To resolve this, please type the following:"
+		eerror
+		eerror "# cd ${KV_DIR}"
+		eerror "# make oldconfig"
+		eerror "# make modules_prepare"
+		eerror
+		eerror "Then please try merging this module again."
+		die "Kernel sources need compiling first"
+	fi
+}
+
+# @FUNCTION: check_modules_supported
+# @DESCRIPTION:
+# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
+check_modules_supported() {
+	# if we haven't determined the version yet, we need too.
+	require_configured_kernel
+	get_version
+
+	if ! linux_chkconfig_builtin "MODULES"; then
+		eerror "These sources do not support loading external modules."
+		eerror "to be able to use this module please enable \"Loadable modules support\""
+		eerror "in your kernel, recompile and then try merging this module again."
+		die "No support for external modules in ${KV_FULL} config"
+	fi
+}
+
+# @FUNCTION: check_extra_config
+# @DESCRIPTION:
+# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
+# the prefix ~ is not used) doesn't satisfy the directive.
+check_extra_config() {
+	local config negate die error reworkmodulenames
+	local soft_errors_count=0 hard_errors_count=0 config_required=0
+	# store the value of the QA check, because otherwise we won't catch usages
+	# after if check_extra_config is called AND other direct calls are done
+	# later.
+	local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
+
+	# if we haven't determined the version yet, we need to
+	linux-info_get_any_version
+
+	# Determine if we really need a .config. The only time when we don't need
+	# one is when all of the CONFIG_CHECK options are prefixed with "~".
+	for config in ${CONFIG_CHECK}; do
+		if [[ "${config:0:1}" != "~" ]]; then
+			config_required=1
+			break
+		fi
+	done
+
+	if [[ ${config_required} == 0 ]]; then
+		# In the case where we don't require a .config, we can now bail out
+		# if the user has no .config as there is nothing to do. Otherwise
+		# code later will cause a failure due to missing .config.
+		if ! linux_config_exists; then
+			ewarn "Unable to check for the following kernel config options due"
+			ewarn "to absence of any configured kernel sources or compiled"
+			ewarn "config:"
+			for config in ${CONFIG_CHECK}; do
+				config=${config#\~}
+				config=${config#\!}
+				local_error="ERROR_${config}"
+				msg="${!local_error}"
+				if [[ -z ${msg} ]]; then
+					local_error="WARNING_${config}"
+					msg="${!local_error}"
+				fi
+				ewarn " - ${config}${msg:+ - }${msg}"
+			done
+			ewarn "You're on your own to make sure they are set if needed."
+			export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
+			return 0
+		fi
+	else
+		require_configured_kernel
+	fi
+
+	einfo "Checking for suitable kernel configuration options..."
+
+	for config in ${CONFIG_CHECK}
+	do
+		# if we specify any fatal, ensure we honor them
+		die=1
+		error=0
+		negate=0
+		reworkmodulenames=0
+
+		if [[ ${config:0:1} == "~" ]]; then
+			die=0
+			config=${config:1}
+		elif [[ ${config:0:1} == "@" ]]; then
+			die=0
+			reworkmodulenames=1
+			config=${config:1}
+		fi
+		if [[ ${config:0:1} == "!" ]]; then
+			negate=1
+			config=${config:1}
+		fi
+
+		if [[ ${negate} == 1 ]]; then
+			linux_chkconfig_present ${config} && error=2
+		elif [[ ${reworkmodulenames} == 1 ]]; then
+			local temp_config="${config//*:}" i n
+			config="${config//:*}"
+			if linux_chkconfig_present ${config}; then
+				for i in ${MODULE_NAMES}; do
+					n="${i//${temp_config}}"
+					[[ -z ${n//\(*} ]] && \
+						MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
+				done
+				error=2
+			fi
+		else
+			linux_chkconfig_present ${config} || error=1
+		fi
+
+		if [[ ${error} > 0 ]]; then
+			local report_func="eerror" local_error
+			local_error="ERROR_${config}"
+			local_error="${!local_error}"
+
+			if [[ -z "${local_error}" ]]; then
+				# using old, deprecated format.
+				local_error="${config}_ERROR"
+				local_error="${!local_error}"
+			fi
+			if [[ ${die} == 0 && -z "${local_error}" ]]; then
+				#soft errors can be warnings
+				local_error="WARNING_${config}"
+				local_error="${!local_error}"
+				if [[ -n "${local_error}" ]] ; then
+					report_func="ewarn"
+				fi
+			fi
+
+			if [[ -z "${local_error}" ]]; then
+				[[ ${error} == 1 ]] \
+					&& local_error="is not set when it should be." \
+					|| local_error="should not be set. But it is."
+				local_error="CONFIG_${config}:\t ${local_error}"
+			fi
+			if [[ ${die} == 0 ]]; then
+				${report_func} "  ${local_error}"
+				soft_errors_count=$[soft_errors_count + 1]
+			else
+				${report_func} "  ${local_error}"
+				hard_errors_count=$[hard_errors_count + 1]
+			fi
+		fi
+	done
+
+	if [[ ${hard_errors_count} > 0 ]]; then
+		eerror "Please check to make sure these options are set correctly."
+		eerror "Failure to do so may cause unexpected problems."
+		eerror "Once you have satisfied these options, please try merging"
+		eerror "this package again."
+		export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
+		die "Incorrect kernel configuration options"
+	elif [[ ${soft_errors_count} > 0 ]]; then
+		ewarn "Please check to make sure these options are set correctly."
+		ewarn "Failure to do so may cause unexpected problems."
+	else
+		eend 0
+	fi
+	export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
+}
+
+check_zlibinflate() {
+	# if we haven't determined the version yet, we need to
+	require_configured_kernel
+	get_version
+
+	# although I restructured this code - I really really really dont support it!
+
+	# bug #27882 - zlib routines are only linked into the kernel
+	# if something compiled into the kernel calls them
+	#
+	# plus, for the cloop module, it appears that there's no way
+	# to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
+	# is on
+
+	local INFLATE
+	local DEFLATE
+
+	einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
+
+	ebegin "checking ZLIB_INFLATE"
+	linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
+	eend $?
+	[ "$?" != 0 ] && die
+
+	ebegin "checking ZLIB_DEFLATE"
+	linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
+	eend $?
+	[ "$?" != 0 ] && die
+
+	local LINENO_START
+	local LINENO_END
+	local SYMBOLS
+	local x
+
+	LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
+	LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
+	(( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
+	(( LINENO_END = $LINENO_END - 1 ))
+	SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
+
+	# okay, now we have a list of symbols
+	# we need to check each one in turn, to see whether it is set or not
+	for x in $SYMBOLS ; do
+		if [ "${!x}" = "y" ]; then
+			# we have a winner!
+			einfo "${x} ensures zlib is linked into your kernel - excellent"
+			return 0
+		fi
+	done
+
+	eerror
+	eerror "This kernel module requires ZLIB library support."
+	eerror "You have enabled zlib support in your kernel, but haven't enabled"
+	eerror "enabled any option that will ensure that zlib is linked into your"
+	eerror "kernel."
+	eerror
+	eerror "Please ensure that you enable at least one of these options:"
+	eerror
+
+	for x in $SYMBOLS ; do
+		eerror "  * $x"
+	done
+
+	eerror
+	eerror "Please remember to recompile and install your kernel, and reboot"
+	eerror "into your new kernel before attempting to load this kernel module."
+
+	die "Kernel doesn't include zlib support"
+}
+
+################################
+# Default pkg_setup
+# Also used when inheriting linux-mod to force a get_version call
+# @FUNCTION: linux-info_pkg_setup
+# @DESCRIPTION:
+# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
+# to support the options specified in CONFIG_CHECK (if not null)
+linux-info_pkg_setup() {
+	linux-info_get_any_version
+
+	if kernel_is 2 4; then
+		if [ "$( gcc-major-version )" -eq "4" ] ; then
+			echo
+			ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
+			ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
+			echo
+			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
+
+	[ -n "${CONFIG_CHECK}" ] && check_extra_config;
+}
diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index 27ff44a..ca64091 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -1,4 +1,4 @@
-# Copyright 1999-2015 Gentoo Foundation
+# Copyright 1999-2016 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$
 
@@ -136,7 +136,7 @@ else
 	LICENSE="GPL-2+ LGPL-2.1+ FDL-1.1+"
 fi
 
-IUSE="multislot regression-test vanilla"
+IUSE="regression-test vanilla"
 IUSE_DEF=( nls nptl )
 
 if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
@@ -159,7 +159,7 @@ if [[ ${PN} != "kgcc64" && ${PN} != gcc-* ]] ; then
 	tc_version_is_at_least 4.8 && IUSE+=" graphite" IUSE_DEF+=( sanitize )
 	tc_version_is_at_least 4.9 && IUSE+=" cilk +vtv"
 	tc_version_is_at_least 5.0 && IUSE+=" jit mpx"
-	tc_version_is_at_least 6.0 && IUSE+=" pie +ssp"
+	tc_version_is_at_least 6.0 && IUSE+=" pie ssp +pch"
 fi
 
 IUSE+=" ${IUSE_DEF[*]/#/+}"
@@ -631,6 +631,50 @@ do_gcc_PIE_patches() {
 
 # configure to build with the hardened GCC specs as the default
 make_gcc_hard() {
+
+	local gcc_hard_flags=""
+	# Gcc >= 6.X we can use configurations options to turn pie/ssp on as default
+	if tc_version_is_at_least 6.0 ; then
+		if use pie ; then
+			einfo "Updating gcc to use automatic PIE building ..."
+		fi
+		if use ssp ; then
+			einfo "Updating gcc to use automatic SSP building ..."
+		fi
+		if use hardened ; then
+			# Will add some optimatizion as default.
+			gcc_hard_flags+=" -DEXTRA_OPTIONS"
+			# rebrand to make bug reports easier
+			BRANDING_GCC_PKGVERSION=${BRANDING_GCC_PKGVERSION/Gentoo/Gentoo Hardened}
+		fi
+	else
+		if use hardened ; then
+			# rebrand to make bug reports easier
+			BRANDING_GCC_PKGVERSION=${BRANDING_GCC_PKGVERSION/Gentoo/Gentoo Hardened}
+			if hardened_gcc_works ; then
+				einfo "Updating gcc to use automatic PIE + SSP building ..."
+				gcc_hard_flags+=" -DEFAULT_PIE_SSP"
+			elif hardened_gcc_works pie ; then
+				einfo "Updating gcc to use automatic PIE building ..."
+				ewarn "SSP has not been enabled by default"
+				gcc_hard_flags+=" -DEFAULT_PIE"
+			elif hardened_gcc_works ssp ; then
+				einfo "Updating gcc to use automatic SSP building ..."
+				ewarn "PIE has not been enabled by default"
+				gcc_hard_flags+=" -DEFAULT_SSP"
+			else
+				# do nothing if hardened isn't supported, but don't die either
+				ewarn "hardened is not supported for this arch in this gcc version"
+				return 0
+			fi
+		else
+			if hardened_gcc_works ssp ; then
+				einfo "Updating gcc to use automatic SSP building ..."
+				gcc_hard_flags+=" -DEFAULT_SSP"
+			fi
+		fi
+	fi
+
 	# we want to be able to control the pie patch logic via something other
 	# than ALL_CFLAGS...
 	sed -e '/^ALL_CFLAGS/iHARD_CFLAGS = ' \
@@ -639,36 +683,8 @@ make_gcc_hard() {
 	# Need to add HARD_CFLAGS to ALL_CXXFLAGS on >= 4.7
 	if tc_version_is_at_least 4.7 ; then
 		sed -e '/^ALL_CXXFLAGS/iHARD_CFLAGS = ' \
-						-e 's|^ALL_CXXFLAGS = |ALL_CXXFLAGS = $(HARD_CFLAGS) |' \
-						-i "${S}"/gcc/Makefile.in
-	fi
-
-	# defaults to enable for all toolchains
-	local gcc_hard_flags=""
-	if use hardened ; then
-		if hardened_gcc_works ; then
-			einfo "Updating gcc to use automatic PIE + SSP building ..."
-			gcc_hard_flags+=" -DEFAULT_PIE_SSP"
-		elif hardened_gcc_works pie ; then
-			einfo "Updating gcc to use automatic PIE building ..."
-			ewarn "SSP has not been enabled by default"
-			gcc_hard_flags+=" -DEFAULT_PIE"
-		elif hardened_gcc_works ssp ; then
-			einfo "Updating gcc to use automatic SSP building ..."
-			ewarn "PIE has not been enabled by default"
-			gcc_hard_flags+=" -DEFAULT_SSP"
-		else
-			# do nothing if hardened isn't supported, but don't die either
-			ewarn "hardened is not supported for this arch in this gcc version"
-			return 0
-		fi
-		# rebrand to make bug reports easier
-		BRANDING_GCC_PKGVERSION=${BRANDING_GCC_PKGVERSION/Gentoo/Gentoo Hardened}
-	else
-		if hardened_gcc_works ssp ; then
-			einfo "Updating gcc to use automatic SSP building ..."
-			gcc_hard_flags+=" -DEFAULT_SSP"
-		fi
+			-e 's|^ALL_CXXFLAGS = |ALL_CXXFLAGS = $(HARD_CFLAGS) |' \
+			-i "${S}"/gcc/Makefile.in
 	fi
 
 	sed -i \
@@ -904,6 +920,11 @@ toolchain_src_configure() {
 		confgcc+=( --enable-libstdcxx-time )
 	fi
 
+	# Support to disable pch when building libstdcxx
+	if tc_version_is_at_least 6.0 && ! use pch ; then
+		confgcc+=( --disable-libstdcxx-pch )
+	fi
+
 	# The jit language requires this.
 	is_jit && confgcc+=( --enable-host-shared )
 
@@ -1862,7 +1883,7 @@ gcc_movelibs() {
 			if [[ ${FROMDIR} != "${TODIR}" && -d ${FROMDIR} ]] ; then
 				local files=$(find "${FROMDIR}" -maxdepth 1 ! -type d 2>/dev/null)
 				if [[ -n ${files} ]] ; then
-					mv ${files} "${TODIR}"
+					mv ${files} "${TODIR}" || die
 				fi
 			fi
 		done
@@ -1940,7 +1961,7 @@ create_gcc_env_entry() {
 		local mdir mosdir abi ldpath
 		for abi in $(get_all_abis TARGET) ; do
 			mdir=$($(XGCC) $(get_abi_CFLAGS ${abi}) --print-multi-directory)
-			ldpath="${LIBPATH}"
+			ldpath=${LIBPATH}
 			[[ ${mdir} != "." ]] && ldpath+="/${mdir}"
 			ldpaths="${ldpath}${ldpaths:+:${ldpaths}}"
 
@@ -1949,7 +1970,7 @@ create_gcc_env_entry() {
 		done
 	else
 		# Older gcc's didn't do multilib, so logic is simple.
-		ldpaths="${LIBPATH}"
+		ldpaths=${LIBPATH}
 	fi
 
 	cat <<-EOF > ${gcc_envd_file}
@@ -1967,6 +1988,11 @@ create_gcc_env_entry() {
 }
 
 copy_minispecs_gcc_specs() {
+	# on gcc 6 we don't need minispecs
+	if tc_version_is_at_least 6.0 ; then
+		return 0
+	fi
+
 	# setup the hardenedno* specs files and the vanilla specs file.
 	if hardened_gcc_works ; then
 		create_gcc_env_entry hardenednopiessp
@@ -2148,10 +2174,6 @@ should_we_gcc_config() {
 
 	local curr_branch_ver=$(get_version_component_range 1-2 ${curr_config_ver})
 
-	# If we're using multislot, just run gcc-config if we're installing
-	# to the same profile as the current one.
-	use multislot && return $([[ ${curr_config_ver} == ${GCC_CONFIG_VER} ]])
-
 	if [[ ${curr_branch_ver} == ${GCC_BRANCH_VER} ]] ; then
 		return 0
 	else
@@ -2312,6 +2334,10 @@ hardened_gcc_is_stable() {
 }
 
 want_minispecs() {
+	# on gcc 6 we don't need minispecs
+	if tc_version_is_at_least 6.0 ; then
+		return 0
+	fi
 	if tc_version_is_at_least 4.3.2 && use hardened ; then
 		if ! want_pie ; then
 			ewarn "PIE_VER or SPECS_VER is not defined in the GCC ebuild."