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+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# @ECLASS: qt4-r2.eclass
+# @MAINTAINER:
+# Qt herd <qt@gentoo.org>
+# @BLURB: Eclass for Qt4-based packages, second edition.
+# @DESCRIPTION:
+# This eclass contains various functions that may be useful when
+# dealing with packages using Qt4 libraries. Requires EAPI=2 or later.
+
+case ${EAPI} in
+	2|3|4|5) : ;;
+	*)	 die "qt4-r2.eclass: unsupported EAPI=${EAPI:-0}" ;;
+esac
+
+inherit base eutils qmake-utils
+
+export XDG_CONFIG_HOME="${T}"
+
+# @ECLASS-VARIABLE: DOCS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array containing documents passed to dodoc command.
+# Paths can be absolute or relative to ${S}.
+#
+# Example: DOCS=( ChangeLog README "${WORKDIR}/doc_folder/" )
+
+# @ECLASS-VARIABLE: HTML_DOCS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array containing documents passed to dohtml command.
+# Paths can be absolute or relative to ${S}.
+#
+# Example: HTML_DOCS=( "doc/document.html" "${WORKDIR}/html_folder/" )
+
+# @ECLASS-VARIABLE: LANGS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# In case your Qt4 application provides various translations, use this variable
+# to specify them in order to populate "linguas_*" IUSE automatically. Make sure
+# that you set this variable before inheriting qt4-r2 eclass.
+#
+# Example: LANGS="de el it ja"
+for x in ${LANGS}; do
+	IUSE+=" linguas_${x}"
+done
+
+# @ECLASS-VARIABLE: LANGSLONG
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Same as LANGS, but this variable is for LINGUAS that must be in long format.
+# Remember to set this variable before inheriting qt4-r2 eclass.
+# Look at ${PORTDIR}/profiles/desc/linguas.desc for details.
+#
+# Example: LANGSLONG="en_GB ru_RU"
+for x in ${LANGSLONG}; do
+	IUSE+=" linguas_${x%_*}"
+done
+unset x
+
+# @ECLASS-VARIABLE: PATCHES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array variable containing all the patches to be applied. This variable
+# is expected to be defined in the global scope of ebuilds. Make sure to
+# specify the full path. This variable is used in src_prepare phase.
+#
+# Example:
+# @CODE
+# PATCHES=(
+# 	"${FILESDIR}/mypatch.patch"
+# 	"${FILESDIR}/mypatch2.patch"
+# )
+# @CODE
+
+# @FUNCTION: qt4-r2_src_unpack
+# @DESCRIPTION:
+# Default src_unpack function for packages that depend on qt4. If you have to
+# override src_unpack in your ebuild (probably you don't need to), call
+# qt4-r2_src_unpack in it.
+qt4-r2_src_unpack() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_unpack "$@"
+}
+
+# @FUNCTION: qt4-r2_src_prepare
+# @DESCRIPTION:
+# Default src_prepare function for packages that depend on qt4. If you have to
+# override src_prepare in your ebuild, you should call qt4-r2_src_prepare in it,
+# otherwise autopatcher will not work!
+qt4-r2_src_prepare() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_prepare "$@"
+}
+
+# @FUNCTION: qt4-r2_src_configure
+# @DESCRIPTION:
+# Default src_configure function for packages that depend on qt4. If you have to
+# override src_configure in your ebuild, call qt4-r2_src_configure in it.
+qt4-r2_src_configure() {
+	debug-print-function $FUNCNAME "$@"
+
+	local project_file=$(qmake-utils_find_pro_file)
+
+	if [[ -n ${project_file} ]]; then
+		eqmake4 "${project_file}"
+	else
+		base_src_configure "$@"
+	fi
+}
+
+# @FUNCTION: qt4-r2_src_compile
+# @DESCRIPTION:
+# Default src_compile function for packages that depend on qt4. If you have to
+# override src_compile in your ebuild (probably you don't need to), call
+# qt4-r2_src_compile in it.
+qt4-r2_src_compile() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_compile "$@"
+}
+
+# @FUNCTION: qt4-r2_src_install
+# @DESCRIPTION:
+# Default src_install function for qt4-based packages. Installs compiled code,
+# and documentation (via DOCS and HTML_DOCS variables).
+qt4-r2_src_install() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_install INSTALL_ROOT="${D}" "$@"
+	einstalldocs
+}
+
+EXPORT_FUNCTIONS src_unpack src_prepare src_configure src_compile src_install