Take a lot of java stuff from the migration overlay on gentooexperimental. This includes a new eclipse ebuild for rc7

svn path=/trunk/overlay/; revision=4

1 files changed, 1747 insertions, 0 deletions

diff --git a/eclass/java-utils-2.eclass b/eclass/java-utils-2.eclass
new file mode 100644
index 0000000..6f04b9e
--- /dev/null
+++ b/eclass/java-utils-2.eclass
@@ -0,0 +1,1747 @@
+# Base eclass for Java packages
+#
+# Copyright (c) 2004-2005, Thomas Matthijs <axxo@gentoo.org>
+# Copyright (c) 2004, Karl Trygve Kalleberg <karltk@gentoo.org>
+# Copyright (c) 2004-2005, Gentoo Foundation
+#
+# Licensed under the GNU General Public License, v2
+#
+
+
+# -----------------------------------------------------------------------------
+# @eclass-begin
+# @eclass-shortdesc Java Utility eclass
+# @eclass-maintainer java@gentoo.org
+#
+# This eclass provides functionality which is used by 
+# java-pkg.eclass and java-pkg-opt.eclass as well as from ebuilds.
+#
+# @warning 
+#   You probably don't want to inherit this directly from an ebuild. Instead,
+#   you should inherit java-ant for Ant-based Java packages, java-pkg for other 
+#   Java packages, or java-pkg-opt for packages that have optional Java support.
+#
+# -----------------------------------------------------------------------------
+
+inherit eutils versionator multilib
+
+# -----------------------------------------------------------------------------
+# @section-begin variables
+# @section-title Variables
+#
+# Summary of variables which control the behavior of building Java packges.
+# -----------------------------------------------------------------------------
+
+# Make sure we use java-config-2
+export WANT_JAVA_CONFIG="2"
+
+# -----------------------------------------------------------------------------
+# @variable-internal JAVA_PKG_E_DEPEND
+#
+# This is a convience variable to be used from the other java eclasses. This is
+# the version of java-config we want to use. We also need a recent version 
+# portage, that includes phase hooks.
+# -----------------------------------------------------------------------------
+JAVA_PKG_E_DEPEND=">=dev-java/java-config-2.0.19-r1 >=sys-apps/portage-2.1_pre1"
+
+# -----------------------------------------------------------------------------
+# @variable-external JAVA_PKG_ALLOW_VM_CHANGE
+# @variable-default yes
+#
+# Allow this eclass to change the active VM?
+# If your system VM isn't sufficient for the package, the build will fail.
+# @note This is useful for testing specific VMs.
+# -----------------------------------------------------------------------------
+JAVA_PKG_ALLOW_VM_CHANGE=${JAVA_PKG_ALLOW_VM_CHANGE:="yes"}
+
+# -----------------------------------------------------------------------------
+# @variable-external JAVA_PKG_FORCE_VM
+#
+# Explicitly set a particular VM to use. If its not valid, it'll fall back to
+# whatever /etc/java-config-2/build/jdk.conf would elect to use.
+#
+# Should only be used for testing and debugging.
+#
+# @example Use sun-jdk-1.5 to emerge foo
+#	JAVA_PKG_FORCE_VM=sun-jdk-1.5 emerge foo
+#
+# -----------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+# @variable-external JAVA_PKG_WANT_SOURCE
+#
+# Specify a specific VM version to compile for to use for -source.
+# Normally this is determined from DEPEND.
+# See java-pkg_get-source function below.
+#
+# Should only be used for testing and debugging.
+#
+# @seealso java-pkg_get-source
+#
+# @example Use 1.4 source to emerge baz
+#	JAVA_PKG_WANT_SOURCE=1.4 emerge baz
+# -----------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+# @variable-external JAVA_PKG_WANT_TARGET
+#
+# Same as JAVA_PKG_WANT_SOURCE above but for -target.
+# See java-pkg_get-target function below.
+#
+# Should only be used for testing and debugging.
+#
+# @seealso java-pkg_get-target
+#
+# @example emerge bar to be compatible with 1.3
+#	JAVA_PKG_WANT_TARGET=1.3 emerge bar
+# -----------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+# @variable-internal JAVA_PKG_COMPILER_DIR
+# @default /usr/share/java-config-2/compiler
+# 
+# Directory where compiler settings are saved, without trailing slash.
+# Probably shouldn't touch this variable.
+# -----------------------------------------------------------------------------
+JAVA_PKG_COMPILER_DIR=${JAVA_PKG_COMPILER_DIR:="/usr/share/java-config-2/compiler"}
+
+
+# -----------------------------------------------------------------------------
+# @variable-internal JAVA_PKG_COMPILERS_CONF
+# @variable-default /etc/java-config-2/build/compilers.conf
+#
+# Path to file containing information about which compiler to use.
+# Can be overloaded, but it should be overloaded for testing.
+# -----------------------------------------------------------------------------
+JAVA_PKG_COMPILERS_CONF=${JAVA_PKG_COMPILERS_CONF:="/etc/java-config-2/build/compilers.conf"}
+
+# -----------------------------------------------------------------------------
+# @variable-external JAVA_PKG_FORCE_COMPILER
+#
+# Explicitly set a list of compilers to use. This is normally read from
+# JAVA_PKG_COMPILERS_CONF. 
+#
+# @note This should only be used internally or for testing.
+# @example Use jikes and javac, in that order
+#	JAVA_PKG_FORCE_COMPILER="jikes javac"
+# -----------------------------------------------------------------------------
+
+# TODO document me
+JAVA_PKG_QA_VIOLATIONS=0
+
+# -----------------------------------------------------------------------------
+# @section-end variables
+# -----------------------------------------------------------------------------
+
+
+# -----------------------------------------------------------------------------
+# @section-begin install
+# @section-summary Install functions
+#
+# These are used to install Java-related things, such as jars, Javadocs, JNI
+# libraries, etc.
+# -----------------------------------------------------------------------------
+
+
+# -----------------------------------------------------------------------------
+# @ebuild-function java-pkg_dojar
+#
+# Installs any number of jars.
+# Jar's will be installed into /usr/share/${PN}(-${SLOT})/lib/ by default.
+# You can use java-pkg_jarinto to change this path.
+# You should never install a jar with a package version in the filename. 
+# Instead, use java-pkg_newjar defined below.
+#
+# @example
+#	java-pkg_dojar dist/${PN}.jar dist/${PN}-core.jar
+#
+# @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
+			# install it into JARDEST if it's a non-symlink
+			if [[ ! -L "${jar}" ]] ; then
+				INSDESTTREE="${JAVA_PKG_JARDEST}" \
+					doins "${jar}" || die "failed to install ${jar}"
+				java-pkg_append_ JAVA_PKG_CLASSPATH "${JAVA_PKG_JARDEST}/${jar_basename}"
+				debug-print "installed ${jar} to ${D}${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}")" "${D}${JAVA_PKG_JARDEST}/${jar_basename}"
+				debug-print "${jar} is a symlink, linking accordingly"
+			fi
+		else
+			die "${jar} does not exist"
+		fi
+	done
+
+	java-pkg_do_write_
+}
+
+
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_regjar
+#
+# Records an already installed jar in the package.env
+# This would mostly be used if the package has make or a custom script to
+# install things.
+#
+# Example:
+#	java-pkg-regjar ${D}/opt/foo/lib/foo.jar
+#
+# @param $@ - jars to record
+# ------------------------------------------------------------------------------
+# TODO fix me!
+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 "${jar}" ]]; then
+			java-pkg_append_ JAVA_PKG_CLASSPATH	"${jar}"
+		elif [[ -e "${D}${jar}" ]]; then
+			java-pkg_append_ JAVA_PKG_CLASSPATH	"${jar#${D}}"
+		else
+			die "${jar} does not exist"
+		fi
+	done
+
+	java-pkg_do_write_
+}
+
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_newjar
+#
+# Installs a jar with a new name
+#
+# @example: install a versioned jar without the version
+#	java-pkg_newjar dist/${P}.jar ${PN}.jar
+#
+# @param $1 - jar to install
+# @param $2 - new name for jar - defaults to ${PN}.jar if not specified
+# ------------------------------------------------------------------------------
+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 ${original_jar} ]] && die "${new_jar} does not exist!"
+
+	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}"
+}
+
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_addcp
+#
+# 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.
+#
+# TODO add example
+# @param $@ - value to append to JAVA_PKG_CLASSPATH
+# ------------------------------------------------------------------------------
+java-pkg_addcp() {
+	java-pkg_append_ JAVA_PKG_CLASSPATH "${@}"
+	java-pkg_do_write_
+}
+
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_doso
+# 
+# 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
+#
+# Example:
+#	java-pkg_doso *.so
+#
+# @param $@ - JNI libraries to install
+# ------------------------------------------------------------------------------
+java-pkg_doso() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 1 ]] &&  "At least one argument required for ${FUNCNAME}"
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] &&  die "At least one argument required for ${FUNCNAME}"
+
+	java-pkg_init_paths_
+
+	local lib
+	# for each lib
+	for lib in "$@" ; do
+		# if the lib exists...
+		if [[ -e "${lib}" ]] ; then
+			# install if it isn't a symlink
+			if [[ ! -L "${lib}" ]] ; then
+				INSDESTTREE="${JAVA_PKG_LIBDEST}" \
+					INSOPTIONS="${LIBOPTIONS}" \
+					doins "${lib}" || "failed to install ${lib}"
+				java-pkg_append_ JAVA_PKG_LIBRARY "${JAVA_PKG_LIBDEST}"
+				debug-print "Installing ${lib} to ${JAVA_PKG_LIBDEST}"
+			# otherwise make a symlink to the symlink's origin
+			else
+				# TODO use dosym
+				ln -s "$(readlink "${lib}")" "${D}${JAVA_PKG_LIBDEST}/$(basename "${lib}")"
+				debug-print "${lib} is a symlink, linking accordanly"
+			fi
+		# otherwise die
+		else
+			die "${lib} does not exist"
+		fi
+	done
+
+	java-pkg_do_write_
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_regso
+#
+# Registers an already JNI library in package.env.
+#
+# Example:
+#	java-pkg_regso *.so /path/*.so
+#
+# @param $@ - JNI libraries to register
+# ------------------------------------------------------------------------------
+java-pkg_regso() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] &&  "at least one argument needed"
+
+	java-pkg_init_paths_
+	
+	local lib target_dir
+	for lib in "$@" ; 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_
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_jarinto
+#
+# Changes the path jars are installed into
+#
+# @param $1 - new location to install jars into.
+# -----------------------------------------------------------------------------
+java-pkg_jarinto() {
+	debug-print-function ${FUNCNAME} $*
+
+	JAVA_PKG_JARDEST="${1}"
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_sointo
+#
+# Changes the path that JNI libraries are installed into.
+#
+# @param $1 - new location to install JNI libraries into.
+# ------------------------------------------------------------------------------
+java-pkg_sointo() {
+	debug-print-function ${FUNCNAME} $*
+
+	JAVA_PKG_LIBDEST="${1}"
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_dohtml
+#
+# Install Javadoc HTML documentation
+#
+# @example
+#	java-pkg_dohtml dist/docs/
+#
+# ------------------------------------------------------------------------------
+java-pkg_dohtml() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 1 ]] &&  die "At least one argument required for ${FUNCNAME}"
+	# TODO-nichoj find out what exactly -f package-list does
+	dohtml -f package-list "$@"
+	# this probably shouldn't be here but it provides
+	# a reasonable way to catch # docs for all of the
+	# old ebuilds.
+	java-pkg_recordjavadoc
+}
+
+# TODO document
+java-pkg_dojavadoc() {
+	local dir="$1"
+
+	java-pkg_check-phase install
+
+	[[ -z "${dir}" ]] && die "Must specify a directory!"
+	[[ ! -d "${dir}" ]] && die "${dir} does not exist, or isn't a directory!"
+
+	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
+
+	java-pkg_dohtml -r ${dir_to_install}
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_dosrc
+#
+# 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.
+#
+# @example:
+#	java-pkg_dosrc src/*
+#
+# ------------------------------------------------------------------------------
+# 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" 
+	if ! hasq source ${IUSE}; then
+		echo "Java QA Notice: ${FUNCNAME} called without source in IUSE"
+	fi
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] && die "At least one argument needed" 
+
+	java-pkg_init_paths_
+
+	local zip_name="${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 ${dir_name}"
+		fi
+		popd >/dev/null
+	done
+
+	# Install the zip
+	INSDESTTREE=${JAVA_PKG_SOURCESPATH} \
+		doins ${zip_path} || die "Failed to install source"
+
+	JAVA_SOURCES="${JAVA_PKG_SOURCESPATH}/${zip_name}"
+	java-pkg_do_write_
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_dolauncher
+#
+# Make a wrapper script to lauch/start this package
+# If necessary, the wrapper will switch to the appropriate VM.
+#
+# @param $1 - filename of launcher to create
+# @param $2 - options, as follows:
+#  --main the.main.class.too.start
+#  --jar /the/jar/too/launch.jar
+#  --java_args 'Extra arguments to pass too jave'
+#  --pkg_args 'extra arguments too pass too the package'
+#  --pwd
+#  -into
+#  -pre
+# ------------------------------------------------------------------------------
+java-pkg_dolauncher() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_check-phase install
+
+	[[ ${#} -lt 1 ]] && die "Need at least one argument"
+
+	java-pkg_init_paths_
+
+	local name="${1}"
+	# TODO rename to launcher
+	local target="${T}/${name}"
+	local target_dir pre
+	shift
+
+	echo "#!/bin/bash" > "${target}"
+	while [[ -n "${1}" && -n "${2}" ]]; do
+		local var=${1} value=${2}
+		if [[ "${var:0:2}" == "--" ]]; then 
+			echo "gjl_${var:2}=\"${value}\"" >> "${target}"
+		elif [[ "${var}" == "-into" ]]; then
+			target_dir="${value}"
+		elif [[ "${var}" == "-pre" ]]; then
+			pre="${value}"
+		fi
+		shift 2
+	done
+	echo "gjl_package=${JAVA_PKG_NAME}" >> "${target}"
+	[[ -n "${pre}" ]] && [[ -f "${pre}" ]] && cat "${pre}" >> "${target}"
+	echo "source /usr/share/java-config-2/launcher/launcher.bash" >> "${target}"
+	
+	if [[ -n "${into}" ]]; then
+		DESTTREE="${target_dir}" dobin "${target}"
+		local ret=$?
+		return ${ret}
+	else
+		dobin "${target}"
+	fi
+}
+
+# ------------------------------------------------------------------------------
+# 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
+		INSOPTIONS="-m 0644" \
+			INSDESTTREE=${JAVA_PKG_WARDEST} \
+			doins ${warpath}
+	done
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_recordjavadoc
+# 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
+}
+
+# ------------------------------------------------------------------------------
+# @section-end install
+# ------------------------------------------------------------------------------
+
+# ------------------------------------------------------------------------------
+# @begin-section query
+# Use these to build the classpath for building a package.
+# ------------------------------------------------------------------------------
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_jar-from
+#
+# 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.
+#
+# 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
+#
+# @param $1 - Package to get jars from.
+# @param $2 - jar from package. If not specified, all jars will be used.
+# @param $3 - When a single jar is specified, destination filename of the
+#	symlink. Defaults to the name of the jar.
+# ------------------------------------------------------------------------------
+# TODO could probably be cleaned up a little
+java-pkg_jar-from() {
+	debug-print-function ${FUNCNAME} $*
+
+	local target_pkg="${1}" target_jar="${2}" destjar="${3}" 
+	
+	[[ -z ${target_pkg} ]] && die "Must specify a package"
+
+	# default destjar to the target jar
+	[[ -z "${destjar}" ]] && destjar="${target_jar}"
+
+	local classpath="$(java-config --classpath=${target_pkg})"
+	[[ $? != 0 ]] && die "There was a problem getting the classpath for ${target_pkg}"
+
+	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 ${jar_name}"
+			java-pkg_record-jar_ "${target_pkg}" "${jar}"
+		# otherwise, if the current jar is the target jar, link it
+		elif [[ "${jar_name}" == "${target_jar}" ]] ; then
+			[[ -f "${destjar}" ]]  && rm "${destjar}"
+			ln -snf "${jar}" "${destjar}" \
+				|| die "Failed to make symlink from ${jar} to ${destjar}"
+			java-pkg_record-jar_ "${target_pkg}" "${jar}"
+			return 0
+		fi
+	done
+	# if no target was specified, we're ok
+	if [[ -z "${target_jar}" ]] ; then
+		return 0
+	# otherwise, die bitterly
+	else
+		die "Failed to find ${target_jar:-jar} in ${target_pkg}"
+	fi
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_jarfrom
+#
+# See java-pkg_jar-from
+# ------------------------------------------------------------------------------
+java-pkg_jarfrom() {
+	java-pkg_jar-from "$@"
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_getjars
+#
+# Get the classpath provided by any number of packages
+# Among other things, this can be passed to 'javac -classpath' or 'ant -lib'.
+#
+# Example: Get the classpath for xerces-2, 
+#	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
+#
+# @param $@ - list of packages to get jars from
+# ------------------------------------------------------------------------------
+java-pkg_getjars() {
+	debug-print-function ${FUNCNAME} $*
+
+	[[ ${#} -lt 1 ]] && die "At least one argument needed"
+
+	# NOTE could probably just pass $@ to java-config --classpath. and return it
+	local classpath pkg
+	for pkg in ${@//,/ }; do
+	#for pkg in $(echo "$@" | tr ',' ' '); do
+		jars="$(java-config --classpath=${pkg})"
+		debug-print "${pkg}:${jars}"
+		# TODO should we ensure jars exist?
+		if [[ -z "${classpath}" ]]; then
+			classpath="${jars}"
+		else
+			classpath="${classpath}:${jars}"
+		fi
+		java-pkg_record-jar_ "${pkg}"
+	done
+	echo "${classpath}"
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_getjar
+#
+# Get the filename of a single jar from a package
+#
+# @example
+#	java-pkg_getjar xerces-2 xml-apis.jar
+# @example-return
+#	/usr/share/xerces-2/lib/xml-apis.jar
+#
+# @param $1 - package to use
+# @param $2 - jar to get
+# ------------------------------------------------------------------------------
+java-pkg_getjar() {
+	debug-print-function ${FUNCNAME} $*
+
+	local pkg="${1}" target_jar="${2}" jar
+	[[ -z ${pkg} ]] && die "Must specify package to get a jar from"
+	[[ -z ${target_jar} ]] && die "Must specify jar to get"
+
+	# TODO check that package is actually installed
+	local classpath=$(java-config --classpath=${pkg})
+	[[ $? != 0 ]] && die "There could not find classpath for ${pkg}. Are you sure its installed?"
+	for jar in ${classpath//:/ }; do
+		if [[ ! -f "${jar}" ]] ; then
+			die "Installation problems with jars in ${pkg} - is it installed?"
+		fi
+
+		if [[ "$(basename ${jar})" == "${target_jar}" ]] ; then
+			java-pkg_record-jar_ "${pkg}" "${jar}"
+			echo "${jar}"
+			return 0
+		fi
+	done
+	
+	die "Could not find ${target_jar} in ${pkg}"
+	return 1
+}
+
+# This function reads stdin, and based on that input, figures out how to
+# populate jars from the filesystem.
+# Need to figure out a good way of making use of this, ie be able to use a
+# string that was built instead of stdin
+# NOTE: this isn't quite ready for primetime.
+#java-pkg_populate-jars() {
+#	local line
+#
+#	read line
+#	while [[ -n "${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
+#}
+
+# ------------------------------------------------------------------------------
+# @section-end query
+# ------------------------------------------------------------------------------
+
+# ------------------------------------------------------------------------------
+# @section-begin helper
+# @section-summary Helper functions 
+#
+# Various other functions to use from an ebuild
+# ------------------------------------------------------------------------------
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_need
+#
+# Adds virtual dependencies, which can optionally be controlled by a USE flag.
+# Currently supported virtuals are:
+#	javamail
+#	jdbc-stdext
+#	jaf
+#	jdbc-rowset
+#	jms
+#
+# @param $1 - Optionally indicate that the dependencies are controlled by 
+#				a use flag by specifying '--use' Requires $2.
+# @param $2 - USE flag which will enable the dependencies.
+# @param $@ - virtual packages to add depenedencies for
+# ------------------------------------------------------------------------------
+# TODO rewrite to parse a line based declaration file instead -- karltk
+#java-pkg_need() {
+#	debug-print-function ${FUNCNAME} $*
+#	local useflag
+#	if [[ ${1} == "--use" ]]; then
+#		useflag="${2}"
+#		shift 2
+#	fi
+#
+#	if [[ -z ${1} ]]; then
+#		die "Must specify at least one virtual package."
+#	fi
+#
+#	local depstr newdepstr
+#
+#	for virtual in ${@}; do
+#		if has ${virtual} ${JAVA_PKG_VNEED}; then
+#			debug-print "Already registered virtual ${virtual}"
+#			continue
+#		fi
+#		case ${virtual} in
+#			javamail)
+#				debug-print "java-pkg_need: adding javamail dependencies"
+#				newdepstr="|| ( dev-java/gnu-javamail dev-java/sun-javamail-bin )"
+#				;;
+#			jdbc-stdext)
+#				debug-print "java-pkg_need: adding jdbc-stdext dependencies"
+#				newdepstr="|| ( >=virtual/jdk-1.4 dev-java/jdbc2-stdext )"
+#				;;
+#			jaf)
+#				debug-print "java-pkg_need: adding jaf dependencies"
+#				newdepstr="|| ( dev-java/gnu-jaf dev-java/sun-jaf-bin )"
+#				;;
+#			jdbc-rowset)
+#				debug-print "java-pkg_need: adding jdbc-rowset dependencies"
+#			 	newdepstr="|| ( >=virtual/jdk-1.5 dev-java/sun-jdbc-rowset )"
+#				;;
+#			jms)
+#				debug-print "java-pkg_need: adding jms dependencies"
+#				newdepstr="|| ( dev-java/sun-jms dev-java/openjms )"
+#				;;
+#			*)
+#				die "Invalid virtual: ${virtual}"
+#		esac
+#
+#		export JAVA_PKG_VNEED="${JAVA_PKG_VNEED} ${virtual}"
+#
+#		if [[ -n ${useflag} ]]; then
+#			depstr="${depstr} ${useflag}? ( ${newdepstr} )"
+#		else
+#			depstr="${depstr} ${newdepstr}"
+#		fi
+#	done
+#
+#	[[ -z ${JAVA_PKG_NV_DEPEND} ]] && export JAVA_PKG_NV_DEPEND="${DEPEND}"
+#	[[ -z ${JAVA_PKG_NV_RDEPEND} ]] && export JAVA_PKG_NV_RDEPEND="${RDEPEND}"
+#
+#	export DEPEND="${DEPEND} ${depstr}"
+#	export RDEPEND="${RDEPEND} ${depstr}"
+#}
+
+# This should be used after S has been populated with symlinks to jars
+# TODO document
+java-pkg_ensure-no-bundled-jars() {
+	debug-print-function ${FUNCNAME} $*
+	pushd ${WORKDIR} >/dev/null 2>/dev/null
+
+	local bundled_jars=$(find . -name "*.jar" -type f)
+	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
+	popd >/dev/null 2>/dev/null
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_ensure-vm-version-sufficient
+#
+# 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
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_is-vm-version-sufficient
+# 
+# @return zero - VM is sufficient
+# @return 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 $?
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_ensure-vm-version-eq
+#
+# 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
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_is-vm-version-eq 
+# 
+# @param $@ - VM version to compare current VM to
+# @return zero - VM versions are equal
+# @return 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
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_ensure-vm-version-ge
+#
+# 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
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_is-vm-version-ge 
+# 
+# @param $@ - VM version to compare current VM to
+# @return zero - current VM version is greater than checked version
+# @return 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
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_get-source
+# 
+# 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} ${RDEPEND}")}
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_get-target
+#
+# Determines what target version should be used, for passing to -target.
+# If you don't care about lower versions, you can set _WANT_TARGET to the
+# version of your JDK. 
+# Remember doing this will mostly like cause things to break.
+# Doesn't allow it to be lower then the one in depend.
+# Doesn't allow it to be higher then the active vm.
+#
+# @return string - Either the lowest possible target, or JAVA_PKG_WANT_TARGET
+# ------------------------------------------------------------------------------
+java-pkg_get-target() {
+	local min=$(depend-java-query --get-lowest "${DEPEND} ${RDEPEND}")	
+	if [[ -n "${JAVA_PKG_WANT_TARGET}" ]]; then
+		local max="$(java-config --select-vm "${GENTOO_VM}" -g PROVIDES_VERSION)"
+		if version_is_at_least "${min}" "${JAVA_PKG_WANT_TARGET}" && version_is_at_least "${JAVA_PKG_WANT_TARGET}" "${max}"; then
+			echo ${JAVA_PKG_WANT_TARGET}
+		else
+			echo ${min}
+		fi
+	else
+		echo ${min}
+	fi
+
+	#echo ${JAVA_PKG_WANT_TARGET:-$(depend-java-query --get-lowest "${DEPEND}")}
+}
+
+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}
+
+			[[ -z ${compiler_executable} ]] && die "JAVAC is empty or undefined in ${compiler_env}"
+	
+			# check that it's executable
+			if [[ ! -x ${compiler_executable} ]]; then
+				eerror "Could not find ${compiler_executable}!"
+				die "${compiler_executable} doesn't exist, or isn't executable"
+			fi
+		else
+			eerror "Could not find environment file for ${compiler}"
+			die "Could not find ${compiler_env}"
+		fi
+	fi
+	echo ${compiler_executable}
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_javac-args 
+#
+# 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 "${want_target}" ]]; then
+		debug-print "could not find valid -source/-target values"
+		die "Could not find valid -source/-target values"
+	else
+		if java-pkg_is-vm-version-ge "1.4"; then
+			echo "${source_str} ${target_str}"
+		else
+			echo "${target_str}"
+		fi
+	fi
+}
+
+# TODO document
+java-pkg_get-jni-cflags() {
+	local flags="-I${JAVA_HOME}/include"
+
+	# TODO figure out how to cope with other things than linux...
+	flags="${flags} -I${JAVA_HOME}/include/linux"
+
+	echo ${flags}
+}
+
+# ------------------------------------------------------------------------------
+# @section-end helper
+# ------------------------------------------------------------------------------
+
+# ------------------------------------------------------------------------------
+# @section-begin build
+# @section-summary Build functions
+#
+# These are some functions for building a package. In particular, it consists of
+# wrappers for javac and ant.
+# ------------------------------------------------------------------------------
+
+# ------------------------------------------------------------------------------
+# @ebuild-function eant
+#
+# Ant wrapper function. Will use the appropriate compiler, based on user-defined
+# compiler.
+#
+# ------------------------------------------------------------------------------
+eant() {
+	debug-print-function ${FUNCNAME} $*
+
+	local antflags
+	java-pkg_init-compiler_
+	local compiler="${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 [[ ${compiler} != "javac" ]]; then
+		antflags="-Dbuild.compiler=${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 ${build_compiler_deps})"
+		fi
+	fi
+	
+	antflags="${antflags} -nouserlib -noclasspath"
+
+	if [[ -n ${JAVA_PKG_DEBUG} ]]; then
+		antflags="${antflags} -debug"
+	fi
+	
+	[[ -n ${JAVA_PKG_DEBUG} ]] && echo ant ${antflags} "${@}"
+	ant ${antflags} "${@}" || die "eant failed"
+
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function ejavac
+#
+# Javac wrapper function. Will use the appropriate compiler, based on 
+# /etc/java-config/compilers.conf
+#
+# @param $@ - Arguments to be passed to the compiler
+# ------------------------------------------------------------------------------
+ejavac() {
+	debug-print-function ${FUNCNAME} $*
+
+	local compiler_executable=$(java-pkg_get-javac)
+
+	[[ -n ${JAVA_PKG_DEBUG} ]] && echo ${compiler_executable} $(java-pkg_javac-args) "${@}"
+	${compiler_executable} $(java-pkg_javac-args) "${@}" || die "ejavac failed"
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function java-pkg_filter-compiler
+# 
+# Used to prevent the use of some compilers. Should be used in src_compile.
+# Basically, it just appends onto JAVA_PKG_FILTER_COMPILER
+#
+# @param $@ - compilers to filter
+# ------------------------------------------------------------------------------
+java-pkg_filter-compiler() {
+	JAVA_PKG_FILTER_COMPILER="${JAVA_PKG_FILTER_COMPILER} $@"
+}
+
+# ------------------------------------------------------------------------------
+# @ebuild-function use_doc
+#
+# 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.
+#
+# Example: build javadocs by calling 'javadoc' target
+#	eant $(use_doc)
+# Example: build javadocs by calling 'apidoc' target
+#	eant $(use_doc apidoc)
+#
+# @param $@ - Option value to return. Defaults to 'javadoc'
+# @return string - Name of the target to create javadocs
+# ------------------------------------------------------------------------------
+use_doc() {
+	use doc && echo ${@:-javadoc}
+}
+
+# ------------------------------------------------------------------------------
+# @section-end build
+# ------------------------------------------------------------------------------
+	
+# ------------------------------------------------------------------------------
+# @section-begin internal
+# @section-summary Internal functions 
+#
+# Do __NOT__ use any of these from an ebuild! These are only to be used from
+# within the java eclasses.
+# ------------------------------------------------------------------------------
+
+# -----------------------------------------------------------------------------
+# @function-internal java-pkg_init
+# 
+# The purpose of this function, as the name might imply, is to initialize the
+# Java environment. It ensures that that there aren't any environment variables
+# that'll muss things up. It initializes some variables, which are used
+# internally. And most importantly, it'll switch the VM if necessary.
+#
+# This shouldn't be used directly. Instead, java-pkg and java-pkg-opt will
+# call it during each of the phases of the merge process.
+#
+# -----------------------------------------------------------------------------
+java-pkg_init() {
+	unset JAVAC
+	unset JAVA_HOME
+	java-pkg_init_paths_
+	java-pkg_switch-vm
+	PATH=${JAVA_HOME}/bin:${PATH}
+
+	# TODO we will probably want to set JAVAC and JAVACFLAGS
+
+	# Do some QA checks
+	java-pkg_check-jikes
+
+	# 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.
+	unset CLASSPATH 
+}
+
+# ------------------------------------------------------------------------------
+# @function-internal java-pkg-init-compiler_
+#
+# 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 ${GENTOO_COMPILER} ]]; then
+		debug-print "GENTOO_COMPILER already set"
+		return
+	fi
+
+	local compilers="$(source ${JAVA_PKG_COMPILERS_CONF} 1>/dev/null 2>&1; echo	${COMPILERS})"
+	debug-print "Read \"${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 ${compiler}"
+				continue
+			fi
+		fi
+		
+		# for non-javac, we need to make sure it supports the right target and
+		# source
+		local compiler_env="${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 ${desired_target},	skipping"
+				continue
+			fi
+
+			# -source was introduced in 1.3, so only check 1.3 and on
+			if version_is_at_least "${desired_soure}" "1.3"; then
+				# 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 ${desired_source}, skipping"
+					continue
+				fi
+			fi
+
+			# if you get here, then the compiler should be good to go
+			export GENTOO_COMPILER="${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 javac for compilation"
+		else
+			# probably don't need to notify users about the default.
+			:;#einfo "Defaulting to javac for compilation"
+		fi
+		export GENTOO_COMPILER=javac
+	else
+		einfo "Using ${GENTOO_COMPILER} for compilation"
+	fi
+
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function init_paths_
+#
+# 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}-${SLOT}"
+	fi
+
+	JAVA_PKG_SHAREPATH="${DESTTREE}/share/${JAVA_PKG_NAME}"
+	JAVA_PKG_SOURCESPATH="${JAVA_PKG_SHAREPATH}/sources/"
+	JAVA_PKG_ENV="${D}${JAVA_PKG_SHAREPATH}/package.env"
+
+	[[ -z "${JAVA_PKG_JARDEST}" ]] && JAVA_PKG_JARDEST="${JAVA_PKG_SHAREPATH}/lib"
+	[[ -z "${JAVA_PKG_LIBDEST}" ]] && JAVA_PKG_LIBDEST="${DESTTREE}/$(get_libdir)/${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: ${JAVA_PKG_WARDEST}"
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_do_write_
+#
+# Writes the package.env out to disk.
+#
+# ------------------------------------------------------------------------------
+# TODO change to do-write, to match everything else
+java-pkg_do_write_() {
+	# Create directory for package.env
+	dodir "${JAVA_PKG_SHAREPATH}"
+	if [[ -n "${JAVA_PKG_CLASSPATH}" || -n "${JAVA_PKG_LIBRARY}" || -f "${JAVA_PKG_DEPEND}" ]]; then
+		# Create package.env
+		(
+			echo "DESCRIPTION=\"${DESCRIPTION}\""
+			echo "GENERATION=\"2\""
+
+			[[ -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 "${JAVA_PKG_DEPEND}" ]] && echo "DEPEND=\"$(cat ${JAVA_PKG_DEPEND} | uniq | tr '\n' ':')\""
+			echo "VM=\"$(echo ${RDEPEND} ${DEPEND} | sed -e 's/ /\n/g' | sed -n -e '/virtual\/\(jre\|jdk\)/ { p;q }')\"" # TODO cleanup !
+		) > "${JAVA_PKG_ENV}"
+		
+		# register target/source
+		local target="$(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}\"" >> "${JAVA_PKG_ENV}"
+
+		# Strip unnecessary leading and trailing colons
+		# TODO try to cleanup if possible
+		sed -e "s/=\":/=\"/" -e "s/:\"$/\"/" -i "${JAVA_PKG_ENV}" || die "Did you forget to call java_init ?"
+	fi
+}
+
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_record-jar_
+#
+# Record a dependency to the package.env
+#
+# ------------------------------------------------------------------------------
+JAVA_PKG_DEPEND="${T}/java-pkg-depend"
+
+java-pkg_record-jar_() {
+	debug-print-function ${FUNCNAME} $*
+
+	local pkg=${1} jar=${2} append
+	if [[ -z "${jar}" ]]; then
+		append="${pkg}"
+	else
+		append="$(basename ${jar})@${pkg}"
+	fi
+
+	echo ${append} >> ${JAVA_PKG_DEPEND}
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_append_
+#
+# Appends a value to a variable
+#
+# Example: java-pkg_append_ CLASSPATH foo.jar
+# @param $1 variable name to modify
+# @param $2 value to append
+# ------------------------------------------------------------------------------
+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
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_expand_dir_
+# 
+# Gets the full path of the file/directory's parent.
+# @param $1 - file/directory to find parent directory for
+# @return - path to $1's parent directory
+# ------------------------------------------------------------------------------
+java-pkg_expand_dir_() {
+	pushd "$(dirname "${1}")" >/dev/null 2>&1
+	pwd
+	popd >/dev/null 2>&1
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_func-exists
+#
+# Does the indicated function exist?
+#
+# @return 0 - function is declared
+# @return 1 - function is undeclared
+# ------------------------------------------------------------------------------
+java-pkg_func-exists() {
+	if [[ -n "$(declare -f ${1})" ]]; then
+		return 0
+	else
+		return 1
+	fi
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_setup-vm
+#
+# 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"
+		export LANG="C" LC_ALL="C"
+	elif [[ "${vendor}" == "jrockit" ]]; then
+		addpredict "/proc/cpuinfo"
+	fi
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_needs-vm
+#
+# Does the current package depend on virtual/jdk?
+#
+# @return 0 - Package depends on virtual/jdk
+# @return 1 - Package does not depend on virtual/jdk
+# ------------------------------------------------------------------------------
+java-pkg_needs-vm() {
+	debug-print-function ${FUNCNAME} $*
+
+	if [[ -n "$(echo ${DEPEND} | sed -e '\:virtual/jdk:!d')" ]]; then
+		return 0
+	fi
+
+	return 1
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_get-current-vm
+#
+# @return - The current VM being used
+# ------------------------------------------------------------------------------
+java-pkg_get-current-vm() {
+	java-config -f
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_get-vm-vendor
+#
+# @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}"
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_get-vm-version
+#
+# @return - The version of the current VM
+# ------------------------------------------------------------------------------
+java-pkg_get-vm-version() {
+	debug-print-function ${FUNCNAME} $*
+
+	java-pkg_get-current-vm | sed -e "s/.*-\([0-9.]\+\).*/\1/"
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_switch-vm
+#
+# 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() {
+	if java-pkg_needs-vm; then
+		# Use the VM specified by JAVA_PKG_FORCE_VM
+		if [[ -n ${JAVA_PKG_FORCE_VM} ]]; then
+			# If you're forcing the VM, I hope you know what your doing...
+			export GENTOO_VM="${JAVA_PKG_FORCE_VM}"
+		# if we're allowed to switch the vm...
+		elif [[ "${JAVA_PKG_ALLOW_VM_CHANGE}" == "yes" ]]; then
+			debug-print "depend-java-query:  NV_DEPEND:	${JAVA_PKG_NV_DEPEND:-${DEPEND}} VNEED: ${JAVA_PKG_VNEED}"
+			if [[ -n ${JAVA_PKG_VNEED} ]]; then
+				export GENTOO_VM="$(depend-java-query --need-virtual "${JAVA_PKG_VNEED}" --get-vm "${JAVA_PKG_NV_DEPEND:-${DEPEND}}")"
+			else
+				export GENTOO_VM="$(depend-java-query --get-vm "${JAVA_PKG_NV_DEPEND:-${DEPEND}}")"
+			fi
+		# otherwise just make sure the current VM is sufficient
+		else
+			java-pkg_ensure-vm-version-sufficient
+		fi
+		debug-print "Using: $(java-config -f)"
+		
+		java-pkg_setup-vm
+
+		export JAVACFLAGS="$(java-pkg_javac-args)" 
+		[[ -n ${JAVACFLAGS_EXTRA} ]] && export JAVACFLAGS="${JAVACFLAGS_EXTRA} ${JAVACFLAGS}"
+
+		export JAVA_HOME="$(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="${T}/announced-vm"
+		if [[ -n "${JAVA_PKG_DEBUG}" ]] || [[ ! -f "${tann}" ]] ; then
+			# Add a check for setup/preinst phase... to avoid duplicate outputs
+			# for when FEATURES=buildpkg
+			if [[ ${EBUILD_PHASE} != "setup" && ${EBUILD_PHASE} != "preinst" && ${EBUILD_PHASE} != "postinst" ]];
+			then
+				einfo "Using: $(java-config -f)"
+				[[ ! -f "${tann}" ]] && touch "${tann}"
+			fi
+		fi
+
+	else
+		[[ -n "${JAVA_PKG_DEBUG}" ]] && ewarn "!!! This package inherits java-pkg but doesn't depend on a JDK. -bin or broken dependency!!!"
+	fi
+}
+
+# ------------------------------------------------------------------------------
+# @internal-function java-pkg_die
+#
+# 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 ! hasq 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=\"${GENTOO_COMPILER}\"" >&2
+	echo "and of course, the output of emerge --info" >&2
+}
+
+# ------------------------------------------------------------------------------
+# @section-end internal
+# ------------------------------------------------------------------------------
+
+java-pkg_check-phase() {
+	local phase=${1}
+	local funcname=${2}
+	# TODO add check for java-stricter
+	if [[ ${EBUILD_PHASE} != ${phase} ]]; then
+		java-pkg_announce-qa-violation \
+			"${funcname} used outside of src_${phase}"
+	fi
+}
+
+java-pkg_check-versioned-jar() {
+	local jar=${1}
+
+	if [[ ${jar} =~ ${PV} ]]; then
+		java-pkg_announce-qa-violation "installing versioned jar '${jar}'"
+	fi
+}
+
+java-pkg_check-jikes() {
+	if hasq jikes ${IUSE}; then
+		java-pkg_announce-qa-violation "deprecated USE flag 'jikes' in IUSE"
+	fi
+}
+
+java-pkg_announce-qa-violation() {
+	if hasq java-strict ${FEATURES}; then
+		echo "Java QA Notice: $@" >&2
+		increment-qa-violations
+	fi
+}
+
+increment-qa-violations() {
+	let "JAVA_PKG_QA_VIOLATIONS+=1"
+	export JAVA_PKG_QA_VIOLATIONS
+}
+
+# ------------------------------------------------------------------------------
+# @eclass-end
+# ------------------------------------------------------------------------------